Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000001DIRR
Model Year Start: 2019 Model: Sienna Prod Date Range: [08/2018 -           ]
Title: NETWORKING: CAN COMMUNICATION SYSTEM: DTC COMBINATION TABLE; 2019 - 2020 MY Sienna [08/2018 -        ]

DTC COMBINATION TABLE

HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U)

(a) If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs stored in ECUs that are connected to the CAN buses by following the procedure below.

HINT:

Communication DTCs (DTCs that start with U) indicate a communication error between the ECU that stores the DTC and the ECU that is indicated by the DTC.

(1) If multiple ECUs store a communication DTC for a particular ECU, a communication stop of the ECU is suspected.

*a

Items to be Checked

-

-

NOTICE:

  • This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
  • Even though a DTC title may indicate a communication error with a specific ECU, the ECU name used in the DTC name on the Techstream may differ depending on the ECU that stores the DTC. (Regarding output DTCs, refer to DTC Table by ECU.)

    Click here 2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

HINT:

As multiple ECUs indicate a communication stop with the main body ECU, the possibility of a communication stop of the main body ECU is high.

(2) If almost all of the communication DTCs of an ECU are stored, a communication stop of the ECU is suspected.

*a

Items to be Checked

-

-

NOTICE:

  • This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
  • Even though a DTC title may indicate a communication error with a specific ECU, the ECU name used in the DTC name on the Techstream may differ depending on the ECU that stores the DTC.

    Click here 2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

HINT:

  • If almost all of the DTCs of the main body ECU are stored, the possibility of a communication stop of the main body ECU is high.
  • When a CAN communication error occurs, many DTCs are output. DTCs other than communication error DTCs (such as DTCs that start with C or B) and communication DTCs for the ABS system are important DTCs, however it may be easier to determine the malfunctioning part by examining the overall situation without considering these DTCs.

(b) To help determine the part of the sub bus that has a communication error, prioritize the communication stop DTCs stored in the gateway function equipped ECU.

*a

Items to be Checked

*b

ECM

*c

Gateway function equipped ECU

*d

Location of malfunction

*e

Central bus

*f

Sub bus

NOTICE:

This DTC table is from another model, and is only used here to show the ECUs connected to both a central bus and a sub bus. It shows DTCs output when there is an open in the main bus lines for the ECM on the sub bus. This table does not show DTCs applicable to this vehicle.

HINT:

  • As gateway function equipped ECUs (sub bus monitor ECU) monitor signals from all ECUs that are connected to sub buses, gateway function equipped ECUs can detect ECUs with a communication stop more accurately.
  • When there is a communication stop for the gateway function equipped ECU (gateway), communication with ECUs connected to other buses such as the central bus stops. Therefore, communication DTCs for ECUs connected to other buses are also stored.

(c) When any of the following malfunctions occurs, many DTCs are likely to be output from many ECUs. Because of this, it may be difficult to determine the probable malfunctioning part.

  • Short between CAN lines (CANH and CANL)
  • Short between a CAN line (CANH or CANL) and ground
  • Short between a CAN line (CANH or CANL) and +B
  • Open in a CAN branch line (CANH or CANL) of an ECU or sensor
  • Open in a CAN main bus line (CANH or CANL) between 2 ECUs that have a terminating resistor

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 2, PAST COMMUNICATION ERROR)

(a) Regarding a past communication error of an ECU and sensor connected to the bus 2 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • Regarding an open in a CAN branch line and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the Techstream because the ECU or sensor connected to the CAN branch line does not respond (the ECU or sensor name will not be displayed on the screen).
  • If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the Techstream screen. In this case, check the resistance of the CAN bus (steps 10 to 18) first.

    Click here 2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

  • If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • ○: DTC is output.
  • -: DTC is not output.
  • If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: DTC U1000 may be stored when communication is lost.
  • *3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-

Trouble Mode (Open in CAN branch line(s))

Bus 2

Output ECU

Output DTC

Center Airbag Sensor Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Center Airbag Sensor Communication Stop Mode

Air Conditioning Amplifier Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Air Conditioning Amplifier Communication Stop Mode

Power Management Control ECU Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Power Management Control ECU Communication Stop Mode

Bus 2

Airbag Sensor Assembly

-

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

○

-

U0131

-

○

-

U0142

-

○

-

U0155

-

○

-

Power Management Control ECU

U0100

-

-

○

U0104

-

-

○

U0114

-

-

○

U0233

-

-

○

U1002

-

-

○

U1110

-

-

○

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

-

-

U0101

-

-

-

U0151

○

-

-

U0155

-

-

-

U0327

-

-

-

U1104

-

-

-

U1133

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

ECM

U010487

-

-

-

U012287

-

-

-

U012387

○

-

-

U012687

-

-

-

U015587

-

-

-

U023587

-

-

-

U110287

-

-

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

-

U0129

-

-

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

-

U0142

-

-

-

U0155

-

-

-

Combination Meter Assembly

-

-

-

-

U0100

-

-

-

U0129

-

-

-

U0131

-

-

-

U0151

○

-

-

U0163

-

-

-

U023A

-

-

-

U1104

-

-

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

-

U0123

○

-

-

U0124

○

-

-

U0126

-

-

-

4WD ECU Assembly

U0100

-

-

-

U0123

○

-

-

U0124

○

-

-

U0126

-

-

-

U0129

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

-

-

U0155

-

-

-

U0164

-

○

-

U0198

-

-

-

U1110

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

DCM (Telematics Transceiver)

U0142

-

-

-

U0155

-

-

-

U0163

-

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

-

-

U0125

○

-

-

U0126

-

-

-

U0129

-

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

Clearance Warning ECU Assembly

U0101

-

-

-

U0155

-

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

-

U0125

○

-

-

U0126

-

-

-

U0129

-

-

-

U0235

-

-

-

U1104

-

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

-

U0129

-

-

-

U0235

-

-

-

U023A

-

-

-

U1002

-

-

-

U1104

-

-

-

Forward Recognition Camera

U0100

-

-

-

U0101

-

-

-

U0123

○

-

-

U0126

-

-

-

U0129

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

U0235

-

-

-

U023A

-

-

-

U1104

-

-

-

Parking Assist ECU*1*2

U0100

-

-

-

U0126

-

-

-

U0129

-

-

-

U0140

-

-

-

U0163

-

-

-

U0265

-

-

-

U1110

-

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

-

Rear Television Camera Assembly*2

U0100

-

-

-

U0126

-

-

-

U0140

-

-

-

U0163

-

-

-

U1110

-

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

-

U0200

-

-

-

U0201

-

-

-

U0202

-

-

-

U0208

-

-

-

U0230

-

-

-

U1002

-

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Slide Door Motor Unit LH

-

-

-

-

Slide Door Motor Unit RH

-

-

-

-

-

Trouble Mode (Open in CAN branch line(s))

Bus 2

Output ECU

Output DTC

Main Body ECU Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Main Body ECU Communication Stop Mode

Central Gateway ECU Communication Stop Mode

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Central Gateway ECU Communication Stop Mode

Power Steering ECU Assembly Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Power Steering ECU Communication Stop Mode

Bus 2

Airbag Sensor Assembly

-

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

-

U0131

-

-

○

U0142

○

-

-

U0155

-

-

-

Power Management Control ECU

U0100

-

-

-

U0104

-

-

○

U0114

-

-

-

U0233

-

-

○

U1002

-

-

-

U1110

-

-

○

Main Body ECU (Multiplex Network Body ECU)*3

U0100

○

-

-

U0101

○

-

-

U0151

○

-

-

U0155

○

-

-

U0327

○

-

-

U1104

○

○

-

U1133

○

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

ECM

U010487

-

○

-

U012287

-

-

-

U012387

-

-

-

U012687

-

-

-

U015587

-

-

-

U023587

-

○

-

U110287

-

○

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

○

U0129

-

-

○

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

-

U0142

○

-

-

U0155

-

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

-

U0131

-

-

○

U0151

-

-

-

U0163

-

○

-

U023A

-

○

-

U1104

-

○

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

4WD ECU Assembly

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

U0129

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

○

○

-

U0155

-

○

-

U0164

-

○

-

U0198

-

-

-

U1110

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

DCM (Telematics Transceiver)

U0142

○

○

-

U0155

-

○

  

U0163

-

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

○

-

U0125

-

○

-

U0126

-

○

-

U0129

-

○

-

U0142

○

○

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

Clearance Warning ECU Assembly

U0101

-

○

-

U0155

-

○

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

○

-

U0125

-

○

-

U0126

-

○

-

U0129

-

○

-

U0235

-

-

-

U1104

-

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

○

-

U0129

-

○

-

U0235

-

-

-

U023A

-

-

-

U1002

-

-

-

U1104

-

-

-

Forward Recognition Camera

U0100

-

○

-

U0101

-

○

-

U0123

-

○

-

U0126

-

○

-

U0129

-

○

-

U0131

-

○

○

U0142

○

○

-

U0155

-

○

-

U0235

-

-

-

U023A

-

○

○

U1104

-

-

-

Parking Assist ECU*1*2

U0100

-

○

-

U0126

-

○

-

U0129

-

○

-

U0140

○

○

-

U0163

-

-

-

U0265

-

-

-

U1110

-

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

-

Rear Television Camera Assembly*2

U0100

-

○

-

U0126

-

○

-

U0140

○

○

-

U0163

-

-

-

U1110

-

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

-

U0200

○

-

-

U0201

-

-

-

U0202

-

-

-

U0208

-

-

-

U0230

-

-

-

U1002

-

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Slide Door Motor Unit LH

-

-

-

-

Slide Door Motor Unit RH

-

-

-

-

-

Trouble Mode (Open in CAN branch line(s))

Bus 2

Output ECU

Output DTC

Certification ECU Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Certification ECU Communication Stop Mode

Steering Angle Sensor Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Steering Angle Sensor Communication Stop Mode

Skid Control ECU Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Skid Control ECU Communication Stop Mode

Bus 2

Airbag Sensor Assembly

-

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

Power Management Control ECU

U0100

-

-

-

U0104

-

-

-

U0114

-

-

-

U0233

-

-

-

U1002

-

-

-

U1110

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0327

○

-

-

U1104

-

-

-

U1133

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

ECM

U010487

-

-

-

U012287

-

-

○

U012387

-

-

-

U012687

-

○

-

U015587

-

-

-

U023587

-

-

-

U110287

-

-

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

-

U0129

-

-

○

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

○

-

-

U0142

○

-

-

U0155

○

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

○

U0131

-

-

-

U0151

-

-

-

U0163

-

-

-

U023A

-

-

-

U1104

-

-

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

○

U0123

-

-

○

U0124

-

-

○

U0126

-

○

○

4WD ECU Assembly

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

○

-

U0129

-

-

○

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

U0198

-

-

-

U1110

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

DCM (Telematics Transceiver)

U0142

-

-

-

U0155

-

-

-

U0163

-

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

-

-

U0125

-

-

-

U0126

-

○

-

U0129

-

-

○

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

Clearance Warning ECU Assembly

U0101

-

-

-

U0155

-

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

-

U0125

-

-

-

U0126

-

○

-

U0129

-

-

○

U0235

-

-

-

U1104

-

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

-

U0129

-

-

○

U0235

-

-

-

U023A

-

-

-

U1002

-

-

-

U1104

-

-

-

Forward Recognition Camera

U0100

-

-

-

U0101

-

-

-

U0123

-

-

-

U0126

-

○

-

U0129

-

-

○

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

U0235

-

-

-

U023A

-

-

-

U1104

-

-

-

Parking Assist ECU*1*2

U0100

-

-

-

U0126

-

○

-

U0129

-

-

○

U0140

-

-

-

U0163

-

-

-

U0265

-

-

-

U1110

-

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

-

Rear Television Camera Assembly*2

U0100

-

-

-

U0126

-

○

-

U0140

-

-

-

U0163

-

-

-

U1110

-

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

-

U0200

-

-

-

U0201

-

-

-

U0202

-

-

-

U0208

-

-

-

U0230

-

-

-

U1002

-

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Slide Door Motor Unit LH

-

-

-

-

Slide Door Motor Unit RH

-

-

-

-

-

Trouble Mode (Open in CAN branch line(s))

Bus 2

Output ECU

Output DTC

Combination Meter ECU Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Combination Meter ECU Communication Stop Mode

4WD Control ECU Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: 4WD Control ECU Communication Stop Mode

ECM Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: ECM Communication Stop Mode

Bus 2

Airbag Sensor Assembly

-

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

○

U0131

-

-

-

U0142

-

-

-

U0155

○

-

-

Power Management Control ECU

U0100

-

-

○

U0104

-

-

-

U0114

-

○

-

U0233

-

-

-

U1002

-

-

-

U1110

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

-

○

U0101

-

-

○

U0151

-

-

-

U0155

○

-

-

U0327

-

-

-

U1104

-

-

-

U1133

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

ECM

U010487

-

-

○

U012287

-

-

○

U012387

-

-

○

U012687

-

-

○

U015587

○

-

○

U023587

-

-

○

U110287

-

-

○

Steering Column Assembly (Power Steering ECU)

U0100

-

-

○

U0129

-

-

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

○

U0142

-

-

-

U0155

○

-

-

Combination Meter Assembly

U0100

○

-

○

U0129

○

-

-

U0131

○

-

-

U0151

○

-

-

U0163

○

-

-

U023A

○

-

-

U1104

○

-

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

○

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

4WD ECU Assembly

U0100

-

○

○

U0123

-

○

-

U0124

-

○

-

U0126

-

○

-

U0129

-

○

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

-

-

U0155

○

-

-

U0164

-

-

-

U0198

-

-

-

U1110

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

DCM (Telematics Transceiver)

U0142

-

-

-

U0155

○

-

-

U0163

-

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

-

○

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

Clearance Warning ECU Assembly

U0101

-

-

○

U0155

○

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

○

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0235

-

-

-

U1104

-

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

○

U0129

-

-

-

U0235

-

-

-

U023A

-

-

-

U1002

-

-

-

U1104

-

-

-

Forward Recognition Camera

U0100

-

-

○

U0101

-

-

○

U0123

-

-

-

U0126

-

-

-

U0129

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

○

-

-

U0235

-

-

-

U023A

○

-

-

U1104

-

-

-

Parking Assist ECU*1*2

U0100

-

-

○

U0126

-

-

-

U0129

-

-

-

U0140

-

-

-

U0163

-

-

-

U0265

-

-

-

U1110

-

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

-

Rear Television Camera Assembly*2

U0100

-

  

○

U0126

-

-

-

U0140

-

-

-

U0163

-

-

-

U1110

-

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

-

U0200

-

-

-

U0201

-

-

-

U0202

-

-

-

U0208

-

-

-

U0230

-

-

-

U1002

-

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Slide Door Motor Unit LH

-

-

-

-

Slide Door Motor Unit RH

-

-

-

-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 3, PAST COMMUNICATION ERROR)

(a) Regarding a past communication error of an ECU and sensor connected to the bus 3 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • Regarding an open in a CAN branch line and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the Techstream because the ECU or sensor connected to the CAN branch line does not respond (the ECU or sensor name will not be displayed on the screen).
  • If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the Techstream screen. In this case, check the resistance of the CAN bus (steps 10 to 18) first.

    Click here 2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

  • If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • ○: DTC is output.
  • -: DTC is not output.
  • If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: DTC U1000 may be stored when communication is lost.
  • *3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-

Trouble Mode (Open in CAN branch line(s))

Bus 3

Output ECU

Output DTC

Radio Receiver Assembly Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Radio Receiver Assembly Communication Stop Mode

DCM Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DCM Communication Stop Mode

Bus 2

Airbag Sensor Assembly

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

U0131

-

-

U0142

-

-

U0155

-

-

Power Management Control ECU

U0100

-

-

U0104

-

-

U0114

-

-

U0233

-

-

U1002

-

-

U1110

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

-

U0101

-

-

U0151

-

-

U0155

-

-

U0327

-

-

U1104

-

-

U1133

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

ECM

U010487

-

-

U012287

-

-

U012387

-

-

U012687

-

-

U015587

-

-

U023587

-

-

U110287

-

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

U0129

-

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

U0142

-

-

U0155

-

-

Combination Meter Assembly

U0100

-

-

U0129

-

-

U0131

-

-

U0151

-

-

U0163

○

-

U023A

-

-

U1104

-

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

U0123

-

-

U0124

-

-

U0126

-

-

4WD ECU Assembly

U0100

-

-

U0123

-

-

U0124

-

-

U0126

-

-

U0129

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

○

-

U0155

○

-

U0164

○

-

U0198

○

○

U1110

○

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

DCM (Telematics Transceiver)

U0142

-

○

U0155

-

○

U0163

○

○

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

-

U0125

-

-

U0126

-

-

U0129

-

-

U0142

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

Clearance Warning ECU Assembly

U0101

-

-

U0155

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

U0125

-

-

U0126

-

-

U0129

-

-

U0235

-

-

U1104

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

U0129

-

-

U0235

-

-

U023A

-

-

U1002

-

-

U1104

-

-

Forward Recognition Camera

U0100

-

-

U0101

-

-

U0123

-

-

U0126

-

-

U0129

-

-

U0131

-

-

U0142

-

-

U0155

-

-

U0235

-

-

U023A

-

-

U1104

-

-

Parking Assist ECU*1*2

U0100

-

-

U0126

-

-

U0129

-

-

U0140

-

-

U0163

○

-

U0265

-

-

U1110

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

Rear Television Camera Assembly*2

U0100

-

-

U0126

-

-

U0140

-

-

U0163

○

-

U1110

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

U0200

-

-

U0201

-

-

U0202

-

-

U0208

-

-

U0230

-

-

U1002

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

Slide Door Motor Unit LH

-

-

-

Slide Door Motor Unit RH

-

-

-

-

Trouble Mode (Open in CAN branch line(s))

Bus 3

Output ECU

Output DTC

Central Gateway ECU (Network Gateway ECU) (CA3H and CA3L Terminal)

Central Gateway ECU (Network Gateway ECU) (CAYH and CAYL Terminal)

Bus 2

Airbag Sensor Assembly

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

U0131

-

-

U0142

-

-

U0155

-

-

Power Management Control ECU

U0100

-

-

U0104

-

-

U0114

-

-

U0233

-

-

U1002

-

-

U1110

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

-

U0101

-

-

U0151

-

-

U0155

-

-

U0327

-

-

U1104

-

-

U1133

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

ECM

U010487

-

-

U012287

-

-

U012387

-

-

U012687

-

-

U015587

-

-

U023587

-

-

U110287

-

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

U0129

-

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

U0142

-

-

U0155

-

-

Combination Meter Assembly

U0100

-

-

U0129

-

-

U0131

-

-

U0151

-

-

U0163

○

-

U023A

-

-

U1104

-

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

U0123

-

-

U0124

-

-

U0126

-

-

4WD ECU Assembly

U0100

-

-

U0123

-

-

U0124

-

-

U0126

-

-

U0129

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

○

-

U0155

○

-

U0164

○

-

U0198

-

-

U1110

○

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

DCM (Telematics Transceiver)

U0142

○

-

U0155

○

-

U0163

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

-

U0125

-

-

U0126

-

-

U0129

-

-

U0142

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

Clearance Warning ECU Assembly

U0101

-

-

U0155

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

U0125

-

-

U0126

-

-

U0129

-

-

U0235

-

-

U1104

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

U0129

-

-

U0235

-

-

U023A

-

-

U1002

-

-

U1104

-

-

Forward Recognition Camera

U0100

-

-

U0101

-

-

U0123

-

-

U0126

-

-

U0129

-

-

U0131

-

-

U0142

-

-

U0155

-

-

U0235

-

-

U023A

-

-

U1104

-

-

Parking Assist ECU*1*2

U0100

-

-

U0126

-

-

U0129

-

-

U0140

-

-

U0163

○

-

U0265

-

-

U1110

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

Rear Television Camera Assembly*2

U0100

-

-

U0126

-

-

U0140

-

-

U0163

○

-

U1110

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

U0200

-

-

U0201

-

-

U0202

-

-

U0208

-

-

U0230

-

-

U1002

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

Slide Door Motor Unit LH

-

-

-

Slide Door Motor Unit RH

-

-

-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 5, PAST COMMUNICATION ERROR)

(a) Regarding a past communication error of an ECU and sensor connected to the bus 5 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN bus line(s) that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • Regarding an open in a CAN branch line and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the Techstream because the ECU or sensor connected to the CAN branch line does not respond (the ECU or sensor name will not be displayed on the screen).
  • If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a short to ground or +B in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the Techstream screen. In this case, check the resistance of the CAN bus (steps 10 to 18) first.

    Click here 2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

  • If an open occurs in just one of the lines of a CAN bus line(s), DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • ○: DTC is output.
  • -: DTC is not output.
  • If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: DTC U1000 may be stored when communication is lost.
  • *3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-

Trouble Mode (Open in CAN branch line(s))

Bus 5

Output ECU

Output DTC

Blind Spot Monitor Sensor Communication Stop Mode

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Blind Spot Monitor Sensor Communication Stop Mode

Clearance Warning ECU Communication Stop Mode

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Clearance Warning ECU Communication Stop Mode

Driving Support ECU Communication Stop Mode

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Driving Support ECU Communication Stop Mode

Front Camera Module Communication Stop Mode

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Front Camera Module Communication Stop Mode

Bus 2

Airbag Sensor Assembly

-

-

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

-

-

U0131

-

-

-

-

U0142

-

-

-

-

U0155

-

-

-

-

Power Management Control ECU

U0100

-

-

-

-

U0104

-

-

○

-

U0114

-

-

-

-

U0233

○

-

-

-

U1002

-

-

-

-

U1110

-

○

-

-

Main Body ECU (Multiplex Network Body ECU)*2

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0327

-

-

-

-

U1104

-

-

○

-

U1133

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

-

ECM

U010487

-

-

○

-

U012287

-

-

-

-

U012387

-

-

-

-

U012687

-

-

-

-

U015587

-

-

-

-

U023587

-

-

-

-

U110287

-

-

-

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

-

-

U0129

-

-

-

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

-

-

U0142

-

-

-

-

U0155

-

-

-

-

Combination Meter Assembly

U0100

-

-

-

-

U0129

-

-

-

-

U0131

-

-

-

-

U0151

-

-

-

-

U0163

-

-

-

-

U023A

-

-

-

○

U1104

-

-

○

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

-

-

U0123

-

-

-

-

U0124

-

-

-

-

U0126

-

-

-

-

4WD ECU Assembly

U0100

-

-

-

-

U0123

-

-

-

-

U0124

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

-

-

-

U0155

-

-

-

-

U0164

-

-

-

-

U0198

-

-

-

-

U1110

-

○

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

-

DCM (Telematics Transceiver)

U0142

-

-

-

-

U0155

-

-

-

-

U0163

-

-

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

○

-

-

-

U0125

○

-

-

-

U0126

○

-

-

-

U0129

○

-

-

-

U0142

○

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

-

Clearance Warning ECU Assembly

U0101

-

○

-

-

U0155

-

○

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

○

-

U0125

-

-

○

-

U0126

-

-

○

-

U0129

-

-

○

-

U0235

-

-

○

-

U1104

-

-

○

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

○

-

U0129

-

-

○

-

U0235

-

-

○

-

U023A

-

-

○

○

U1002

-

-

○

○

U1104

-

-

○

-

Forward Recognition Camera

U0100

-

-

-

○

U0101

-

-

-

○

U0123

-

-

-

○

U0126

-

-

-

○

U0129

-

-

-

○

U0131

-

-

-

○

U0142

-

-

-

○

U0155

-

-

-

○

U0235

-

-

-

○

U023A

-

-

-

○

U1104

-

-

○

○

Parking Assist ECU*1*2

U0100

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

-

U0163

-

-

-

-

U0265

-

-

-

-

U1110

-

○

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

-

-

Rear Television Camera Assembly*2

U0100

-

-

-

-

U0126

-

-

-

-

U0140

-

-

-

-

U0163

-

-

-

-

U1110

-

○

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

-

-

U0200

-

-

-

-

U0201

-

-

-

-

U0202

-

-

-

-

U0208

-

-

-

-

U0230

-

-

-

-

U1002

-

-

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

-

Slide Door Motor Unit LH

-

-

-

-

-

Slide Door Motor Unit RH

-

-

-

-

-

-

Trouble Mode (Open in CAN branch line(s))

Bus 5

Output ECU

Output DTC

Parking Assist ECU Communication Stop Mode

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Parking Assist ECU Communication Stop Mode

Millimeter Wave Radar Sensor Communication Stop Mode

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Millimeter Wave Radar Sensor Communication Stop Mode

Television Camera ECU Communication Stop Mode

2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Television Camera ECU Communication Stop Mode

Bus 2

Airbag Sensor Assembly

-

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

Power Management Control ECU

U0100

-

-

-

U0104

-

-

-

U0114

-

-

-

U0233

-

-

-

U1002

-

-

-

U1110

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0327

-

-

-

U1104

-

-

-

U1133

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

ECM

U010487

-

-

-

U012287

-

-

-

U012387

-

-

-

U012687

-

-

-

U015587

-

-

-

U023587

-

○

-

U110287

-

○

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

-

U0129

-

-

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

-

U0142

-

-

-

U0155

-

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

-

U0131

-

-

-

U0151

-

-

-

U0163

-

-

-

U023A

-

-

-

U1104

-

-

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

4WD ECU Assembly

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

U0129

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

U0198

-

-

-

U1110

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

DCM (Telematics Transceiver)

U0142

-

-

-

U0155

-

-

-

U0163

-

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

Clearance Warning ECU Assembly

U0101

-

-

-

U0155

-

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0235

-

○

-

U1104

-

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

-

U0129

-

-

-

U0235

-

○

-

U023A

-

-

-

U1002

-

○

-

U1104

-

-

-

Forward Recognition Camera

U0100

-

-

-

U0101

-

-

-

U0123

-

-

-

U0126

-

-

-

U0129

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

U0235

-

-

-

U023A

-

-

-

U1104

-

-

-

Parking Assist ECU*1*2

U0100

○

-

-

U0126

○

-

-

U0129

○

-

-

U0140

○

-

-

U0163

○

-

-

U0265

○

-

○

U1110

○

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

-

Rear Television Camera Assembly*2

U0100

-

-

○

U0126

-

-

○

U0140

-

-

○

U0163

-

-

○

U1110

-

-

○

Sub Bus 1

Front Power Seat Switch LH

-

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

-

U0200

-

-

-

U0201

-

-

-

U0202

-

-

-

U0208

-

-

-

U0230

-

-

-

U1002

-

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Slide Door Motor Unit LH

-

-

-

-

Slide Door Motor Unit RH

-

-

-

-

-

Trouble Mode (Open in CAN branch line(s))

Bus 5

Output ECU

Output DTC

Central Gateway ECU Communication Stop Mode

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: Central Gateway ECU Communication Stop Mode

Bus 2

Airbag Sensor Assembly

-

-

Air Conditioning Amplifier Assembly

U0100

-

U0131

-

U0142

-

U0155

-

Power Management Control ECU

U0100

-

U0104

○

U0114

-

U0233

○

U1002

-

U1110

○

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

U0101

-

U0151

-

U0155

-

U0327

-

U1104

○

U1133

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

ECM

U010487

○

U012287

-

U012387

-

U012687

-

U015587

-

U023587

○

U110287

○

Steering Column Assembly (Power Steering ECU)

U0100

-

U0129

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0142

-

U0100

-

U0142

-

U0155

-

Combination Meter Assembly

U0100

-

U0129

-

U0131

-

U0151

-

U0163

-

U023A

○

U1104

○

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

U0123

-

U0124

-

U0126

-

4WD ECU Assembly

U0100

-

U0123

-

U0124

-

U0126

-

U0129

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

U0155

-

U0164

-

U0198

-

U1110

○

Central Gateway ECU (Network Gateway ECU)*3

-

-

DCM (Telematics Transceiver)

U0142

-

U0155

-

U0163

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

○

U0125

○

U0126

○

U0129

○

U0142

○

Central Gateway ECU (Network Gateway ECU)*3

-

-

Clearance Warning ECU Assembly

U0101

○

U0155

○

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

○

U0125

○

U0126

○

U0129

○

U0235

-

U1104

-

Driving Support ECU Assembly (Pre-collision System)

U0100

○

U0129

○

U0235

-

U023A

-

U1002

-

U1104

-

Forward Recognition Camera

U0100

○

U0101

○

U0123

○

U0126

○

U0129

○

U0131

○

U0142

○

U0155

○

U0235

-

U023A

○

U1104

-

Parking Assist ECU*1

U0100

○

U0126

○

U0129

○

U0140

○

U0163

○

U0265

-

U1110

-

Millimeter Wave Radar Sensor Assembly

-

-

Rear Television Camera Assembly

U0100

○

U0126

○

U0140

○

U0163

○

U1110

○

Sub Bus 1

Front Power Seat Switch LH

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

U0200

-

U0201

-

U0202

-

U0208

-

U0230

-

U1002

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

Outer Mirror Control ECU Assembly RH

U0142

-

Slide Door Motor Unit LH

-

-

Slide Door Motor Unit RH

-

-

DTC COMBINATION TABLE (OPEN OR SHORT IN SUB BUS 1, PAST COMMUNICATION ERROR)

(a) Regarding a past communication error of an ECU and sensor connected to sub bus 1 (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), determine the part that had a malfunction based on DTCs output from the Main Body ECU (Multiplex Network Body ECU)*3.

HINT:

  • As gateway function equipped ECUs (sub bus monitor ECUs) monitor signals from all ECUs that are connected to sub buses, gateway function equipped ECUs can detect ECUs with a communication stop more accurately.
  • DTCs output from ECUs other than the Main Body ECU (Multiplex Network Body ECU)*3 (gateway function equipped ECU) are shown only as a reference.
  • Regarding a communication stop that is currently occurring in sub bus 1, the malfunctioning part can be confirmed easily by performing the CAN bus check using the Techstream.
  • If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • ○: DTC is output.
  • -: DTC is not output.
  • If an open occurs in just one of the lines of a CAN bus line, DTCs which are not related to malfunctioning parts may be output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: DTC U1000 may be stored when communication is lost.
  • *3: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

-

Trouble Mode (Open in CAN branch line(s))

Sub Bus 1

Output ECU

Output DTC

Front Power Seat Switch LH

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: U0208; Lost Communication with "Seat Control Module A"

Power Back Door Unit Assembly (Power Back Door ECU)

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: U0230; Lost Communication with Rear Gate Module

Outer Mirror Control ECU Assembly LH

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: U0200; Lost Communication with "Door Control Module B"

Bus 2

Airbag Sensor Assembly

-

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

Power Management Control ECU

U0100

-

-

-

U0104

-

-

-

U0114

-

-

-

U0233

-

-

-

U1002

-

-

-

U1110

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0327

-

-

-

U1104

-

-

-

U1133

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

ECM

U010487

-

-

-

U012287

-

-

-

U012387

-

-

-

U012687

-

-

-

U015587

-

-

-

U023587

-

-

-

U110287

-

-

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

-

U0129

-

-

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

-

U0142

-

-

-

U0155

-

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

-

U0131

-

-

-

U0151

-

-

-

U0163

-

-

-

U023A

-

-

-

U1104

-

-

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

4WD ECU Assembly

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

U0129

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

U0198

-

-

-

U1110

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

DCM (Telematics Transceiver)

U0142

-

-

-

U0155

-

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

Clearance Warning ECU Assembly

U0101

-

-

-

U0155

-

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0235

-

-

-

U1104

-

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

-

U0129

-

-

-

U0235

-

-

-

U023A

-

-

-

U1002

-

-

-

U1104

-

-

-

Forward Recognition Camera

U0100

-

-

-

U0101

-

-

-

U0123

-

-

-

U0126

-

-

-

U0129

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

U0235

-

-

-

U023A

-

-

-

U1104

-

-

-

Parking Assist ECU*1*2

U0100

-

-

-

U0126

-

-

-

U0129

-

-

-

U0140

-

-

-

U0163

-

-

-

U0265

-

-

-

U1110

-

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

-

Rear Television Camera Assembly*2

U0100

-

-

-

U0126

-

-

-

U0140

-

-

-

U0163

-

-

-

U1110

-

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

○

U0200

-

-

-

U0201

-

-

-

U0202

-

-

-

U0208

○

-

-

U0230

-

○

-

U1002

-

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

○

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Slide Door Motor Unit LH

-

-

-

-

Slide Door Motor Unit RH

-

-

-

-

-

Trouble Mode (Open in CAN branch line(s))

Sub Bus 1

Output ECU

Output DTC

Outer Mirror Control ECU Assembly RH

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: U0199; Lost Communication with "Door Control Module A"

Slide Door Motor Unit LH

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: U0202; Lost Communication with "Door Control Module D"

Slide Door Motor Unit RH

2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: U0201; Lost Communication with "Door Control Module C"

Bus 2

Airbag Sensor Assembly

-

-

-

-

Air Conditioning Amplifier Assembly

U0100

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

Power Management Control ECU

U0100

-

-

-

U0104

-

-

-

U0114

-

-

-

U0233

-

-

-

U1002

-

-

-

U1110

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0327

-

-

-

U1104

-

-

-

U1133

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

ECM

U010487

-

-

-

U012287

-

-

-

U012387

-

-

-

U012687

-

-

-

U015587

-

-

-

U023587

-

-

-

U110287

-

-

-

Steering Column Assembly (Power Steering ECU)

U0100

-

-

-

U0129

-

-

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

-

-

U0142

-

-

-

U0155

-

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

-

U0131

-

-

-

U0151

-

-

-

U0163

-

-

-

U023A

-

-

-

U1104

-

-

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

4WD ECU Assembly

U0100

-

-

-

U0123

-

-

-

U0124

-

-

-

U0126

-

-

-

U0129

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

U0198

-

-

-

U1110

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

DCM (Telematics Transceiver)

U0142

-

-

-

U0155

-

-

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

-

-

Clearance Warning ECU Assembly

U0101

-

-

-

U0155

-

-

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0235

-

-

-

U1104

-

-

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

-

-

U0129

-

-

-

U0235

-

-

-

U023A

-

-

-

U1002

-

-

-

U1104

-

-

-

Forward Recognition Camera

U0100

-

-

-

U0101

-

-

-

U0123

-

-

-

U0126

-

-

-

U0129

-

-

-

U0131

-

-

-

U0142

-

-

-

U0155

-

-

-

U0235

-

-

-

U023A

-

-

-

U1104

-

-

-

Parking Assist ECU*1*2

U0100

-

-

-

U0126

-

-

-

U0129

-

-

-

U0140

-

-

-

U0163

-

-

-

U0265

-

-

-

U1110

-

-

-

Millimeter Wave Radar Sensor Assembly

-

-

-

-

Rear Television Camera Assembly*2

U0100

-

-

-

U0126

-

-

-

U0140

-

-

-

U0163

-

-

-

U1110

-

-

-

Sub Bus 1

Front Power Seat Switch LH

-

-

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

-

-

-

U0200

○

-

-

U0201

-

-

○

U0202

-

○

-

U0208

-

-

-

U0230

-

-

-

U1002

-

-

-

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

○

-

-

Slide Door Motor Unit LH

-

-

-

-

Slide Door Motor Unit RH

-

-

-

-

-

Trouble Mode (Open in CAN branch line(s))

Sub Bus 1

Output ECU

Output DTC

Main Body ECU (Multiplex Network Body ECU)

Bus 2

Airbag Sensor Assembly

-

-

Air Conditioning Amplifier Assembly

U0100

-

U0131

-

U0142

-

U0155

-

Power Management Control ECU

U0100

-

U0104

-

U0114

-

U0233

-

U1002

-

U1110

-

Main Body ECU (Multiplex Network Body ECU)*3

U0100

-

U0101

-

U0151

-

U0155

-

U0327

-

U1104

-

U1133

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

ECM

U010487

-

U012287

-

U012387

-

U012687

-

U015587

-

U023587

-

U110287

-

Steering Column Assembly (Power Steering ECU)

U0100

-

U0129

-

Certification ECU (Smart Key ECU Assembly) (Entry function)

U0100

-

U0142

-

U0155

-

Combination Meter Assembly

U0100

-

U0129

-

U0131

-

U0151

-

U0163

-

U023A

-

U1104

-

Steering Angle Sensor (Spiral Cable with Sensor Sub-assembly)

-

-

Brake Actuator Assembly (Skid Control ECU)*1

U0100

-

U0123

-

U0124

-

U0126

-

4WD ECU Assembly

U0100

-

U0123

-

U0124

-

U0126

-

U0129

-

Bus 3

Radio and Display Receiver Assembly*1

U0140

-

U0155

-

U0164

-

U0198

-

U1110

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

DCM (Telematics Transceiver)

U0142

-

U0155

-

Bus 5

Blind Spot Monitor Sensor LH

U0100

-

U0125

-

U0126

-

U0129

-

U0142

-

Central Gateway ECU (Network Gateway ECU)*3

-

-

Clearance Warning ECU Assembly

U0101

-

U0155

-

Driving Support ECU Assembly (Dynamic Radar Cruise Control System)

U0100

-

U0125

-

U0126

-

U0129

-

U0235

-

U1104

-

Driving Support ECU Assembly (Pre-collision System)

U0100

-

U0129

-

U0235

-

U023A

-

U1002

-

U1104

-

Forward Recognition Camera

U0100

-

U0101

-

U0123

-

U0126

-

U0129

-

U0131

-

U0142

-

U0155

-

U0235

-

U023A

-

U1104

-

Parking Assist ECU*1*2

U0100

-

U0126

-

U0129

-

U0140

-

U0163

-

U0265

-

U1110

-

Millimeter Wave Radar Sensor Assembly

-

-

Rear Television Camera Assembly*2

U0100

-

U0126

-

U0140

-

U0163

-

U1110

-

Sub Bus 1

Front Power Seat Switch LH

-

-

Main Body ECU (Multiplex Network Body ECU)*3

U0199

○

U0200

○

U0201

○

U0202

○

U0208

○

U0230

○

U1002

○

Power Back Door Unit Assembly (Power Back Door ECU)

-

-

Outer Mirror Control ECU Assembly LH

U0142

○

Outer Mirror Control ECU Assembly RH

U0142

○

Slide Door Motor Unit LH

-

-

Slide Door Motor Unit RH

-

-