Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000Z14N
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 - 11/2017]
Title: NETWORKING: CAN COMMUNICATION SYSTEM: U1002 (CAN No. 2 BUS); Lost Communication with Gateway Module (Network Gateway ECU); 2017 MY Sienna [08/2016 - 11/2017]

DTC

U1002 (CAN No. 2 BUS)

Lost Communication with Gateway Module (Network Gateway ECU)

DESCRIPTION

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (One side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).

DTC Code

Symptoms

Trouble Area

U1002 (CAN No. 2 BUS)

Lost communication with the gateway module (network gateway ECU).

  • V2 bus circuit
  • Power management control ECU*1 or network gateway ECU*2 main wire or connector
  • Seat belt control ECU branch wire or connector*3
  • AFS ECU (headlight swivel ECU assembly) branch wire or connector*4
  • Parking assist ECU branch wire or connector*5
  • Driving support ECU assembly branch wire or connector*6
  • Clearance warning ECU assembly branch wire or connector*7
  • Blind spot monitor sensor RH branch wire or connector*8
  • Power management control ECU*1
  • Network gateway ECU*2
  • Seat belt control ECU*3
  • AFS ECU (headlight swivel ECU assembly)*4
  • Parking assist ECU*5
  • Driving support ECU assembly*6
  • Clearance warning ECU assembly*7
  • Blind spot monitor sensor RH*8
  • 4WD ECU assembly*9*1
  • No. 4 junction connector
  • No. 5 junction connector
  • No. 2 junction terminal
  • No. 3 junction connector*1
  • *1: w/ Smart Key System
  • *2: w/o Smart Key System
  • *3: w/ Pre-Collision System
  • *4: w/ HID Headlight System
  • *5: w/ Parking Assist Monitor System
  • *6: w/ Dynamic Radar Cruise Control System
  • *7: w/ Intuitive Parking Assist System
  • *8: w/ Blind Spot Monitor System
  • *9: for AWD

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.
  • Turn the ignition switch off before inspecting CAN bus wires for a ground short.
  • After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not operating.
  • Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

HINT:

  • Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

PROCEDURE

1.

PRECAUTION

NOTICE:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (See page 2017 - 2020 MY Sienna [08/2016 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION ).

NEXT

2.

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page 2017 MY Sienna [08/2016 - 11/2017]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION )

Result

Result

Proceed to

w/ Smart Key System

A

w/o Smart Key System

B

B

GO TO STEP 49

A

3.

CHECK CAN BUS WIRE (MAIN WIRE FOR DISCONNECTION, BUS LINE FOR SHORT CIRCUIT)

*a

Junction connector with harness connected

(No. 3 Junction Connector)

*b

Front view of DLC3

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

Resistance Malfunction

D181-11 (CANH) - D181-22 (CANL)

Ignition switch off

54 to 69 Ω

Below 53 Ω: Short in line

Ignition switch off

70 Ω or higher: Open in CAN main bus line

D181-11 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

Below 6 kΩ: +B short

D181-22 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

Below 6 kΩ: +B short

D181-11 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

Below 200 Ω: Ground short

D181-22 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

Below 200 Ω: Ground short

Result

Result

Proceed to

NG

- Open in CAN main wire

A

NG

- Short in line

- +B short

- Ground short

B

OK

C

B

GO TO STEP 15

C

GO TO STEP 48

A

4.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU)

(a) Disconnect the No. 3 junction connector connector.

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D181-11 (CANH) - D181-22 (CANL)

Ignition switch off

108 to 132 Ω

Result

Result

Proceed to

NG

A

OK

B

B

GO TO STEP 7

A

5.

CONNECT CONNECTOR

(a) Reconnect the D181 No. 3 junction connector connector.

NEXT

6.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (POWER MANAGEMENT CONTROL ECU - NO. 4 JUNCTION CONNECTOR)

*a

Front view of wire harness connector

(to Power Management Control ECU)

(a) Disconnect the power management control ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D89-12 (CA3P) - D89-11 (CA3N)

Ignition switch off

108 to 132 Ω

OK

REPLACE POWER MANAGEMENT CONTROL ECU

NG

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO POWER MANAGEMENT CONTROL ECU (POWER MANAGEMENT CONTROL ECU - NO. 3 JUNCTION CONNECTOR)

7.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 3 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

(a) Disconnect the No. 3 junction connector connector.

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D181-11 (CANH) - D181-22 (CANL)

Ignition switch off

108 to 132 Ω

Result

Result

Proceed to

NG

A

OK

B

B

REPLACE NO. 3 JUNCTION CONNECTOR

A

8.

CONNECT CONNECTOR

(a) Reconnect the D181 No. 3 junction connector connector.

NEXT

9.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

(a) Disconnect the No. 4 junction connector connector.

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-2 (CANH) - D182-13 (CANL)

Ignition switch off

108 to 132 Ω

Result

Result

Proceed to

NG

A

OK

B

B

REPLACE NO. 4 JUNCTION CONNECTOR

A

10.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

11.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

(a) Disconnect the No. 5 junction connector connector.

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

L55-2 (CANH) - L55-13 (CANL)

Ignition switch off

108 to 132 Ω

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

OK

12.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR SIDE)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L55-3 (CANH) - L55-14 (CANL)

Ignition switch off

108 to 132 Ω

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

NG

REPLACE NO. 5 JUNCTION CONNECTOR

OK

13.

CONNECT CONNECTOR

(a) Reconnect the L55 No. 5 junction connector connector.

NEXT

14.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION TERMINAL - NO. 5 JUNCTION CONNECTOR)

(a) Disconnect the No. 2 junction terminal connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L54-3 (CANH) - L54-2 (CANL)

Ignition switch off

108 to 132 Ω

*a

Front view of wire harness connector

(to No. 2 Junction Terminal)

OK

REPLACE NO. 2 JUNCTION TERMINAL

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION TERMINAL - NO. 5 JUNCTION CONNECTOR)

15.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - POWER MANAGEMENT CONTROL ECU)

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)

*b

Front view of DLC3

(a) Disconnect the No. 3 junction connector connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D181-11 (CANH) - D181-22 (CANL)

Ignition switch off

108 to 132 Ω

D181-11 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D181-22 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D181-11 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D181-22 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 32

OK

16.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)

*b

Front view of DLC3

HINT:

Except AWD without smart key system, go to step 17.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D181-9 (CANH) - D181-20 (CANL)

Ignition switch off

200 Ω or higher

D181-9 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D181-20 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D181-9 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D181-20 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 34

OK

17.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR SIDE)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D181-10 (CANH) - D181-21 (CANL)

Ignition switch off

200 Ω or higher

D181-10 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D181-21 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D181-10 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D181-21 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

Result

Result

Proceed to

NG

A

OK

B

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)

*b

Front view of DLC3

B

REPLACE NO. 3 JUNCTION CONNECTOR

A

18.

CONNECT CONNECTOR

(a) Reconnect the D181 No. 3 junction connector connector.

NEXT

19.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

(a) Disconnect the No. 4 junction connector connector.

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-5 (CANH) - D182-16 (CANL)

Ignition switch off

108 to 132 Ω

D182-5 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-16 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-5 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-16 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 3 JUNCTION CONNECTOR)

OK

20.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - CLEARANCE WARNING ECU ASSEMBLY)

HINT:

For vehicle without intuitive parking assist system, go to step 21.

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-1 (CANH) - D182-12 (CANL)

Ignition switch off

200 Ω or higher

D182-1 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-12 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-1 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-12 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 36

OK

21.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - SEAT BELT CONTROL ECU)

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

HINT:

For vehicle without pre-collision system, go to step 22.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-3 (CANH) - D182-14 (CANL)

Ignition switch off

200 Ω or higher

D182-3 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-14 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-3 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-14 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 38

OK

22.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

HINT:

For vehicle without dynamic radar cruise control system, go to step 23.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-4 (CANH) - D182-15 (CANL)

Ignition switch off

200 Ω or higher

D182-4 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-15 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-4 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-15 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 40

OK

23.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY))

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

HINT:

For vehicle without HID headlight system, go to step 24.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-6 (CANH) - D182-17 (CANL)

Ignition switch off

200 Ω or higher

D182-6 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-17 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-6 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-17 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 42

OK

24.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - PARKING ASSIST ECU)

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

HINT:

For vehicle without parking assist monitor system, go to step 25.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-7 (CANH) - D182-18 (CANL)

Ignition switch off

200 Ω or higher

D182-7 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-18 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-7 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-18 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 44

OK

25.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR SIDE)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-2 (CANH) - D182-13 (CANL)

Ignition switch off

200 Ω or higher

D182-2 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-13 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-2 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-13 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

Result

Result

Proceed to

NG

A

OK

B

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

B

REPLACE NO. 4 JUNCTION CONNECTOR

A

26.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

27.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

(a) Disconnect the No. 5 junction connector connector.

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

*b

Front view of DLC3

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

L55-2 (CANH) - L55-13 (CANL)

Ignition switch off

108 to 132 Ω

L55-2 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-13 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-2 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

L55-13 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

OK

28.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR RH)

HINT:

For vehicle without blind spot monitor system, go to 29.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

L55-1 (CANH) - L55-12 (CANL)

Ignition switch off

200 Ω or higher

L55-1 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-12 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-1 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

L55-12 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

*b

Front view of DLC3

NG

GO TO STEP 46

OK

29.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR SIDE)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L55-3 (CANH) - L55-14 (CANL)

Ignition switch off

108 to 132 Ω

L55-3 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-14 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-3 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

L55-14 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

*b

Front view of DLC3

NG

REPLACE NO. 5 JUNCTION CONNECTOR

OK

30.

CONNECT CONNECTOR

(a) Reconnect the L55 No. 5 junction connector connector.

NEXT

31.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION TERMINAL - NO. 5 JUNCTION CONNECTOR)

(a) Disconnect the No. 2 junction terminal connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L54-3 (CANH) - L54-2 (CANL)

Ignition switch off

108 to 132 Ω

L54-3 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L54-2 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L54-3 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

L54-2 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

*a

Front view of wire harness connector

(to No. 2 Junction Terminal)

*b

Front view of DLC3

OK

REPLACE NO. 2 JUNCTION TERMINAL

NG

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO JUNCTION TERMINAL (NO. 2 JUNCTION TERMINAL - NO. 5 JUNCTION CONNECTOR)

32.

CONNECT CONNECTOR

(a) Reconnect the D181 No. 3 junction connector connector.

NEXT

33.

CHECK FOR SHORT IN CAN BUS WIRES (POWER MANAGEMENT CONTROL ECU)

*a

Front view of wire harness connector

(to Power Management Control ECU)

*b

Front view of DLC3

(a) Disconnect the power management control ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D89-12 (CA3P) - D89-11 (CA3N)

Ignition switch off

108 to 132 Ω

D89-12 (CA3P) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D89-11 (CA3N) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D89-12 (CA3P) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D89-11 (CA3N) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE POWER MANAGEMENT CONTROL ECU

NG

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO POWER MANAGEMENT CONTROL ECU (CAN-H, CAN-L)

34.

CONNECT CONNECTOR

(a) Reconnect the D181 No. 3 junction connector connector.

NEXT

35.

CHECK FOR SHORT IN CAN BUS WIRES (4WD ECU ASSEMBLY)

*a

Front view of wire harness connector

(to 4WD ECU Assembly)

*b

Front view of DLC3

(a) Disconnect the 4WD ECU assembly connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

K1-14 (CANH) - K1-16 (CANL)

Ignition switch off

54 to 69 Ω

K1-14 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

K1-16 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

K1-14 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

K1-16 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE 4WD ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU ASSEMBLY (CAN-H, CAN-L)

36.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

37.

CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY)

*a

Front view of wire harness connector

(to Clearance Warning ECU Assembly)

*b

Front view of DLC3

(a) Disconnect the clearance warning ECU assembly connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D77-3 (R1) - D77-5 (R2)

Ignition switch off

54 to 69 Ω

D77-3 (R1) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D77-5 (R2) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D77-3 (R1) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D77-5 (R2) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU ASSEMBLY (CAN-H, CAN-L)

38.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

39.

CHECK FOR SHORT IN CAN BUS WIRES (SEAT BELT CONTROL ECU)

*a

Front view of wire harness connector

(to Seat Belt Control ECU)

*b

Front view of DLC3

(a) Disconnect the seat belt control ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D83-1 (CANH) - D83-2 (CANL)

Ignition switch off

54 to 69 Ω

D83-1 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D83-2 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D83-1 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D83-2 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE SEAT BELT CONTROL ECU

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SEAT BELT CONTROL ECU (CAN-H, CAN-L)

40.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

41.

CHECK FOR SHORT IN CAN BUS WIRES (DRIVING SUPPORT ECU ASSEMBLY)

*a

Front view of wire harness connector

(to Driving Support ECU Assembly)

*b

Front view of DLC3

(a) Disconnect the driving support ECU assembly connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A44-39 (CA2H) - A44-17 (CA2L)

Ignition switch off

54 to 69 Ω

A44-39 (CA2H) - D16-4 (CG)

Ignition switch off

200 Ω or higher

A44-17 (CA2L) - D16-4 (CG)

Ignition switch off

200 Ω or higher

A44-39 (CA2H) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

A44-17 (CA2L) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE DRIVING SUPPORT ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU ASSEMBLY (CAN-H, CAN-L)

42.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

43.

CHECK FOR SHORT IN CAN BUS WIRES (AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY))

*a

Front view of wire harness connector

(to AFS ECU (Headlight Swivel ECU Assembly))

*b

Front view of DLC3

(a) Disconnect the AFS ECU (headlight swivel ECU assembly) connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A45-12 (CANH) - A45-13 (CANL)

Ignition switch off

54 to 69 Ω

A45-12 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

A45-13 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

A45-12 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

A45-13 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) (CAN-H, CAN-L)

44.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

45.

CHECK FOR SHORT IN CAN BUS WIRES (PARKING ASSIST ECU)

*a

Front view of wire harness connector

(to Parking Assist ECU)

*b

Front view of DLC3

(a) Disconnect the parking assist ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D164-40 (CANH) - D164-39 (CANL)

Ignition switch off

54 to 69 Ω

D164-40 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D164-39 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D164-40 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D164-39 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE PARKING ASSIST ECU

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO PARKING ASSIST ECU (CAN-H, CAN-L)

46.

CONNECT CONNECTOR

(a) Reconnect the L55 No. 5 junction connector connector.

NEXT

47.

CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH)

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)

*b

Front view of DLC3

(a) Disconnect the blind spot monitor sensor RH connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

q2-2 (CA1P) - q2-7 (CA1N)

Ignition switch off

54 to 69 Ω

q2-2 (CA1P) - D16-4 (CG)

Ignition switch off

200 Ω or higher

q2-7 (CA1N) - D16-4 (CG)

Ignition switch off

200 Ω or higher

q2-2 (CA1P) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

q2-7 (CA1N) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO BLIND SPOT MONITOR SENSOR RH (CAN-H, CAN-L)

48.

CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - POWER SOURCE)

*a

Front view of wire harness connector

(to Power Management Control ECU)

(a) Connect 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 2017 MY Sienna [08/2016 - 11/2017]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION ).

(b) Disconnect the power management control ECU.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D89-6 (GND) - Body ground

Always

Below 1 Ω

D89-5 (GND2) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

D89-2 (AM21) - Body ground

Always

11 to 14 V

D89-1 (AM22) - Body ground

Always

11 to 14 V

OK

REPLACE POWER MANAGEMENT CONTROL ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

49.

CHECK CAN BUS WIRE (MAIN WIRE FOR DISCONNECTION, BUS LINE FOR SHORT CIRCUIT)

*a

Junction connector with harness connected

(No. 4 Junction Connector)

*b

Front view of DLC3

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

Resistance Malfunction

D182-5 (CANH) - D182-16 (CANL)

Ignition switch off

54 to 69 Ω

Below 53 Ω: Short in line

Ignition switch off

70 Ω or higher: Open in CAN main bus line

D182-5 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

Below 6 kΩ: +B short

D182-16 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

Below 6 kΩ: +B short

D182-5 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

Below 200 Ω: Ground short

D182-16 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

Below 200 Ω: Ground short

Result

Result

Proceed to

NG

- Open in CAN main wire

A

NG

- Short in line

- +B short

- Ground short

B

OK

C

B

GO TO STEP 59

C

GO TO STEP 86

A

50.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)

(a) Disconnect the No. 4 junction connector connector.

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-5 (CANH) - D182-16 (CANL)

Ignition switch off

108 to 132 Ω

Result

Result

Proceed to

NG

A

OK

B

B

GO TO STEP 53

A

51.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

52.

CHECK OPEN IN CAN BUS MAIN WIRE (NETWORKGATEWAYECU - NO. 4 JUNCTION CONNECTOR)

*a

Rear view of wire harness connector

(to Network Gateway ECU)

(a) Disconnect the network gateway ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D89-12 (CA3P) - D89-11 (CA3N)

Ignition switch off

108 to 132 Ω

OK

REPLACE NETWORK GATEWAY ECU

NG

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO NETWORK GATEWAY ECU (NETWORK GATEWAY ECU - NO. 4 JUNCTIONCONNECTOR)

53.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

(a) Disconnect the No. 4 junction connector connector.

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-2 (CANH) - D182-13 (CANL)

Ignition switch off

108 to 132 Ω

Result

Result

Proceed to

NG

A

OK

B

B

REPAIR NO. 4 JUNCTION CONNECTOR

A

54.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

55.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

(a) Disconnect the No. 5 junction connector connector.

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

L55-2 (CANH) - L55-13 (CANL)

Ignition switch off

108 to 132 Ω

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)

OK

56.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR SIDE)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L55-3 (CANH) - L55-14 (CANL)

Ignition switch off

108 to 132 Ω

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

NG

REPLACE NO. 5 JUNCTION CONNECTOR

OK

57.

CONNECT CONNECTOR

(a) Reconnect the L55 No. 5 junction connector connector.

NEXT

58.

CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 JUNCTION TERMINAL - NO. 5 JUNCTION CONNECTOR)

(a) Disconnect the No. 2 junction terminal connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L54-3 (CANH) - L54-2 (CANL)

Ignition switch off

108 to 132 Ω

*a

Front view of wire harness connector

(to No. 2 Junction Terminal)

OK

REPLACE NO. 2 JUNCTION TERMINAL

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION TERMINAL - NO. 5 JUNCTION CONNECTOR)

59.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

(a) Disconnect the No. 4 junction connector connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-5 (CANH) - D182-16 (CANL)

Ignition switch off

108 to 132 Ω

D182-5 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-16 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-5 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-16 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 72

OK

60.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - CLEARANCE WARNING ECU ASSEMBLY)

HINT:

For vehicle without intuitive parking assist system, go to step 61.

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-1 (CANH) - D182-12 (CANL)

Ignition switch off

200 Ω or higher

D182-1 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-12 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-1 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-12 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 74

OK

61.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - SEAT BELT CONTROL ECU)

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

HINT:

For vehicle without pre-collision system, go to step 62.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-3 (CANH) - D182-14 (CANL)

Ignition switch off

200 Ω or higher

D182-3 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-14 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-3 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-14 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 76

OK

62.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - DRIVING SUPPORT ECU ASSEMBLY)

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

HINT:

For vehicle without dynamic radar cruise control system, go to step 63.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-4 (CANH) - D182-15 (CANL)

Ignition switch off

200 Ω or higher

D182-4 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-15 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-4 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-15 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 78

OK

63.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY))

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

HINT:

For vehicle without HID headlight system, go to step 64.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-6 (CANH) - D182-17 (CANL)

Ignition switch off

200 Ω or higher

D182-6 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-17 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-6 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-17 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 80

OK

64.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - PARKING ASSIST ECU)

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

HINT:

For vehicle without parking assist monitor system, go to step 65.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-7 (CANH) - D182-18 (CANL)

Ignition switch off

200 Ω or higher

D182-7 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-18 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-7 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-18 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

GO TO STEP 82

OK

65.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR SIDE)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D182-2 (CANH) - D182-13 (CANL)

Ignition switch off

200 Ω or higher

D182-2 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-13 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D182-2 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D182-13 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

Result

Result

Proceed to

NG

A

OK

B

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)

*b

Front view of DLC3

B

REPLACE JUNCTION CONNECTOR

A

66.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

67.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

(a) Disconnect the No. 5 junction connector connector.

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

*b

Front view of DLC3

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

L55-2 (CANH) - L55-13 (CANL)

Ignition switch off

108 to 132 Ω

L55-2 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-13 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-2 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

L55-13 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

OK

68.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR RH)

HINT:

For vehicle without blind spot monitor system, go to 69.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

L55-1 (CANH) - L55-12 (CANL)

Ignition switch off

200 Ω or higher

L55-1 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-12 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-1 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

L55-12 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

*b

Front view of DLC3

NG

GO TO STEP 84

OK

69.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR SIDE)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L55-3 (CANH) - L55-14 (CANL)

Ignition switch off

108 to 132 Ω

L55-3 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-14 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L55-3 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

L55-14 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

*a

Rear view of wire harness connector

(to No. 5 Junction Connector)

*b

Front view of DLC3

NG

REPLACE NO. 5 JUNCTION CONNECTOR

OK

70.

CONNECT CONNECTOR

(a) Reconnect the L55 No. 5 junction connector connector.

NEXT

71.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION TERMINAL - NO. 5 JUNCTION CONNECTOR)

(a) Disconnect the No. 2 junction terminal connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L54-3 (CANH) - L54-2 (CANL)

Ignition switch off

108 to 132 Ω

L54-3 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L54-2 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

L54-3 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

L54-2 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

*a

Front view of wire harness connector

(to No. 2 Junction Terminal)

*b

Front view of DLC3

OK

REPLACE NO. 2 JUNCTION TERMINAL

NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION TERMINAL - NO. 5 JUNCTION CONNECTOR)

72.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

73.

CHECK FOR SHORT IN CAN BUS WIRES (NETWORK GATEWAY ECU)

*a

Front view of wire harness connector

(to Network Gateway ECU)

*b

Front view of DLC3

(a) Disconnect the network gateway ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D90-13 (CA2H) - D90-12 (CA2L)

Ignition switch off

108 to 132 Ω

D90-13 (CA2H) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D90-12 (CA2L) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D90-13 (CA2H) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D90-12 (CA2L) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE NETWORK GATEWAY ECU

NG

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO NETWORK GATEWAY ECU (CAN-H, CAN-L)

74.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

75.

CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY)

*a

Front view of wire harness connector

(to Clearance Warning ECU Assembly)

*b

Front view of DLC3

(a) Disconnect the clearance warning ECU assembly connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D77-3 (R1) - D77-5 (R2)

Ignition switch off

54 to 69 Ω

D77-3 (R1) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D77-5 (R2) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D77-3 (R1) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D77-5 (R2) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU ASSEMBLY (CAN-H, CAN-L)

76.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

77.

CHECK FOR SHORT IN CAN BUS WIRES (SEAT BELT CONTROL ECU)

*a

Front view of wire harness connector

(to Seat Belt Control ECU)

*b

Front view of DLC3

(a) Disconnect the seat belt control ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D83-1 (CANH) - D83-2 (CANL)

Ignition switch off

54 to 69 Ω

D83-1 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D83-2 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D83-1 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D83-2 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE DRIVING SUPPORT ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU ASSEMBLY (CAN-H, CAN-L)

78.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

79.

CHECK FOR SHORT IN CAN BUS WIRES (DRIVING SUPPORT ECU ASSEMBLY)

*a

Front view of wire harness connector

(to Driving Support ECU Assembly)

*b

Front view of DLC3

(a) Disconnect the driving support ECU assembly connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A44-39 (CA2H) - A44-17 (CA2L)

Ignition switch off

54 to 69 Ω

A44-39 (CA2H) - D16-4 (CG)

Ignition switch off

200 Ω or higher

A44-17 (CA2L) - D16-4 (CG)

Ignition switch off

200 Ω or higher

A44-39 (CA2H) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

A44-17 (CA2L) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE DRIVING SUPPORT ECU ASSEMBLY

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU ASSEMBLY (CAN-H, CAN-L)

80.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

81.

CHECK FOR SHORT IN CAN BUS WIRES (AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY))

*a

Front view of wire harness connector

(to AFS ECU (Headlight Swivel ECU Assembly))

*b

Front view of DLC3

(a) Disconnect the AFS ECU (headlight swivel ECU assembly) connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A45-12 (CANH) - A45-13 (CANL)

Ignition switch off

54 to 69 Ω

A45-12 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

A45-13 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

A45-12 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

A45-13 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) (CAN-H, CAN-L)

82.

CONNECT CONNECTOR

(a) Reconnect the D182 No. 4 junction connector connector.

NEXT

83.

CHECK FOR SHORT IN CAN BUS WIRES (PARKING ASSIST ECU)

*a

Front view of wire harness connector

(to Parking Assist ECU)

*b

Front view of DLC3

(a) Disconnect the parking assist ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

D164-40 (CANH) - D164-39 (CANL)

Ignition switch off

54 to 69 Ω

D164-40 (CANH) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D164-39 (CANL) - D16-4 (CG)

Ignition switch off

200 Ω or higher

D164-40 (CANH) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

D164-39 (CANL) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE PARKING ASSIST ECU

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO PARKING ASSIST ECU (CAN-H, CAN-L)

84.

CONNECT CONNECTOR

(a) Reconnect the L55 No. 5 junction connector connector.

NEXT

85.

CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH)

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)

*b

Front view of DLC3

(a) Disconnect the blind spot monitor sensor RH connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

q2-2 (CA1P) - q2-7 (CA1N)

Ignition switch off

54 to 69 Ω

q2-2 (CA1P) - D16-4 (CG)

Ignition switch off

200 Ω or higher

q2-7 (CA1N) - D16-4 (CG)

Ignition switch off

200 Ω or higher

q2-2 (CA1P) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

q2-7 (CA1N) - D16-16 (BAT)

Ignition switch off

6 kΩ or higher

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO BLIND SPOT MONITOR SENSOR RH (CAN-H, CAN-L)

86.

CHECK HARNESS AND CONNECTOR (NETWORK GATEWAY ECU - POWER SOURCE)

*a

Front view of wire harness connector

(to Network Gateway ECU)

(a) Connect 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 2017 MY Sienna [08/2016 - 11/2017]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION ).

(b) Disconnect the network gateway ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D90-4 (GND) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D90-9 (IG2) - Body ground

Ignition switch ON

11 to 14 V

D90-10 (IG1) - Body ground

Ignition switch ON

11 to 14 V

OK

REPLACE NETWORK GATEWAY ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR