Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000018GU7
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: NETWORKING: CAN COMMUNICATION SYSTEM: Television Camera ECU Communication Stop Mode; 2018 - 2020 MY Sienna [11/2017 -        ]

Television Camera ECU Communication Stop Mode

DESCRIPTION

Detection Item

Symptom

Trouble Area

Television Camera ECU Communication Stop Mode

Either Condition is met:

  • "Parking Assist Monitor System" is indicated on the "Communication Bus Check" screen of the Techstream.

    Click here 2018 MY Sienna [11/2017 - 08/2018]; NETWORKING: CAN COMMUNICATION SYSTEM: PROBLEM SYMPTOMS TABLE 2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: PROBLEM SYMPTOMS TABLE

  • Communication system DTCs (DTCs that start with U) that are output correspond to "Television Camera ECU Communication Stop Mode" in "DTC Combination Table".

    Click here 2018 MY Sienna [11/2017 - 08/2018]; NETWORKING: CAN COMMUNICATION SYSTEM: DTC COMBINATION TABLE 2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DTC COMBINATION TABLE

  • Rear television camera assembly CAN branch wire or connector
  • Power source circuit of rear television camera assembly
  • Rear television camera assembly ground circuit
  • Rear television camera assembly

HINT:

For vehicle with panoramic view monitor system only.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

NOTICE:

  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

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

  • Before measuring the resistance of the CAN bus, turn the engine switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notice before proceeding with work.

    Click here 2017 - 2020 MY Sienna [08/2016 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

  • Some parts must be initialized and set when replacing or removing and installing parts.

    Click here 2018 - 2020 MY Sienna [11/2017 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

    DTC check procedure: Turn the ignition switch to ON and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

  • After the repair, perform CAN Bus Check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

    Click here 2018 MY Sienna [11/2017 - 08/2018]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM 2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

HINT:

  • Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
  • When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

PROCEDURE

1.

CHECK FOR OPEN IN CAN BUS WIRE (REAR TELEVISION CAMERA ASSEMBLY CAN BRANCH WIRE)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the rear television camera assembly connector.

*a

Front view of wire harness connector

(to Rear Television Camera Assembly)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

W30-4 (CANH) - W30-1 (CANL)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω
NG

REPAIR OR REPLACE REAR TELEVISION CAMERA ASSEMBLY CAN BRANCH WIRE OR CONNECTOR (CAN-H, CAN-L)
OK

2.

CHECK HARNESS AND CONNECTOR (REAR TELEVISION CAMERA ASSEMBLY - POWER SOURCE)

(a) Disconnect the rear television camera assembly connector.

*a

Front view of wire harness connector

(to Rear Television Camera Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

W30-5 (CGND) - Body ground

Cable disconnected from negative (-) battery terminal

Below 1 Ω

(c) Reconnect the cable to the negative (-) battery terminal.

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page 2018 - 2020 MY Sienna [11/2017 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION )

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

W30-6 (CB+) - Body ground

Ignition switch ACC

5.5 to 7.05 V
OK

REPLACE REAR TELEVISION CAMERA ASSEMBLY

NG

3.

CHECK HARNESS AND CONNECTOR (REAR TELEVISION CAMERA ASSEMBLY - RADIO AND RECEIVER ASSEMBLY)

(a) Disconnect the D196 radio and display receiver assembly connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

W30-6 (CB+) - D196-30 (CA+)

Always

Below 1 Ω

W30-5 (CGND) - D196-27 (CGND)

Always

Below 1 Ω

W30-6 (CB+) or D196-30 (CA+) - Body ground

Always

10 kΩ or higher

W30-5 (CGND) or D196-27 (CGND) - Body ground

Always

10 kΩ or higher
OK

GO TO PARKING ASSIST MONITOR SYSTEM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR