Toyota 4Runner manuals

Toyota 4Runner: Short in CAN Bus Lines

DESCRIPTION

There may be a short circuit between the CAN bus lines when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 Ω.

Symptom

Trouble Area

The resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 Ω.

  • Short between CAN bus lines
  • Combination meter assembly
  • Skid control ECU (master cylinder solenoid)*1
  • Main body ECU (multiplex network body ECU)
  • Airbag sensor assembly
  • Steering angle sensor (spiral cable sub-assembly)
  • Navigation receiver assembly*2
  • Radio and display receiver assembly*3
  • Certification ECU (smart key ECU assembly)*4
  • Power steering ECU assembly
  • Yaw rate sensor assembly
  • Power management control ECU*4
  • Four wheel drive control ECU*1
  • Skid control ECU (brake actuator assembly)*5
  • Stabilizer control ECU*6
  • Air conditioning amplifier assembly*7
  • ECM
  • No. 1 junction connector*1
  • No. 2 junction connector
  • No. 3 junction connector
  • No. 4 junction connector
  • *1: for 4WD
  • *2: for Navigation Receiver Type
  • *3: for Radio and Display Receiver Type
  • *4: w/ Smart Key System
  • *5: for 2WD
  • *6: w/ Kinetic Dynamic Suspension System
  • *7: w/o Smart Key System

WIRING DIAGRAM





CAUTION / NOTICE / HINT

HINT:

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

PROCEDURE

1.

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

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



NEXT

2.

CHECK FOR SHORT IN CAN BUS WIRES (DLC3 BRANCH WIRE)

(a) Disconnect the F59 No. 2 junction connector connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F13-6 (CANH) - F13-14 (CANL)

Ignition switch off

1 MΩ or higher

Text in Illustration

*a

Front view of DLC3

Result

Result

Proceed to

OK (for 4WD)

A

OK (for 2WD)

B

NG

C


B

GO TO STEP 13


C

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3 (CANH, CANL)


A

3.

CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.


NEXT

4.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR SIDE)

(a) Disconnect the A36 No. 1 junction connector connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F13-6 (CANH) - F13-14 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Front view of DLC3


NG

GO TO STEP 11


OK

5.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - SKID CONTROL ECU (MASTER CYLINDER SOLENOID))

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A36-1 (CANH) - A36-4 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 1 Junction Connector)



NG

GO TO STEP 7


OK

6.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A36-3 (CANH) - A36-6 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to No. 1 Junction Connector)



OK

REPAIR OR REPLACE NO. 1 JUNCTION CONNECTOR


NG

GO TO STEP 9

7.

CONNECT CONNECTOR

(a) Reconnect the A36 No. 1 junction connector connector.


NEXT

8.

CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU (MASTER CYLINDER SOLENOID))

(a) Disconnect the A6 skid control ECU (master cylinder solenoid) connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A6-11 (CANH) - A6-25 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Skid Control ECU (Master Cylinder Solenoid))


OK

REPLACE SKID CONTROL ECU (MASTER CYLINDER SOLENOID)


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU (MASTER CYLINDER SOLENOID) (CANH, CANL)

9.

CONNECT CONNECTOR

(a) Reconnect the A36 No. 1 junction connector connector.


NEXT

10.

CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER ASSEMBLY)

(a) Disconnect the F14 combination meter assembly connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F14-1 (CANH) - F14-2 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Combination Meter Assembly)


OK

REPLACE COMBINATION METER ASSEMBLY


NG

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (CANH, CANL)

11.

CONNECT CONNECTOR

(a) Reconnect the A36 No. 1 junction connector connector.


NEXT

12.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)

(a) Disconnect the F59 No. 2 junction connector connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F59-3 (CANH) - F59-14 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to No. 2 Junction Connector)


NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION CONNECTOR - NO. 1 JUNCTION CONNECTOR)


OK

13.

CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.


NEXT

14.

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

(a) Disconnect the F60 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

F13-6 (CANH) - F13-14 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Front view of DLC3


NG

GO TO STEP 39


OK

15.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

HINT:

For vehicles without a smart key system, go to "Check for Short in CAN Bus Wires (No. 3 Junction Connector - Power Steering ECU Assembly)".

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F60-6 (CANH) - F60-17 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)



NG

GO TO STEP 23


OK

16.

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

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F60-5 (CANH) - F60-16 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)



NG

GO TO STEP 25


OK

17.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - YAW RATE SENSOR ASSEMBLY)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F60-7 (CANH) - F60-18 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)



NG

GO TO STEP 27


OK

18.

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

HINT:

For vehicles without a smart key system, go to "Check for Short in CAN Bus Wires (No. 3 Junction Connector - Four Wheel Drive Control ECU)".

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F60-4 (CANH) - F60-15 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)



NG

GO TO STEP 29


OK

19.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - FOUR WHEEL DRIVE CONTROL ECU)

HINT:

For 2WD vehicles, go to "Check for Short in CAN Bus Wires (No. 3 Junction Connector - Skid Control ECU (Brake Actuator Assembly))".

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F60-3 (CANH) - F60-14 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)



NG

GO TO STEP 31


OK

20.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY))

HINT:

For 4WD vehicles, go to "Check for Short in CAN Bus Wires (No. 3 Junction Connector - Air Conditioning Amplifier Assembly)".

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F60-9 (CANH) - F60-20 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)



NG

GO TO STEP 33


OK

21.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 3 JUNCTION CONNECTOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)

HINT:

For vehicles with a smart key system, go to "Check for Short in CAN Bus Wires (No. 3 Junction Connector - ECM)".

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F60-8 (CANH) - F60-19 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)



NG

GO TO STEP 35


OK

22.

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

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F60-2 (CANH) - F60-13 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to No. 3 Junction Connector)



OK

REPAIR OR REPLACE NO. 3 JUNCTION CONNECTOR


NG

GO TO STEP 37

23.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

24.

CHECK FOR SHORT IN CAN BUS WIRES (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

(a) Disconnect the F79 certification ECU (smart key ECU assembly) connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F79-9 (CANH) - F79-10 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to Certification ECU (Smart Key ECU Assembly))


OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (CANH, CANL)

25.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

26.

CHECK FOR SHORT IN CAN BUS WIRES (POWER STEERING ECU ASSEMBLY)

(a) Disconnect the F41 power steering ECU assembly connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F41-1 (CANH) - F41-2 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to Power Steering ECU Assembly)


OK

REPLACE POWER STEERING ECU ASSEMBLY


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POWER STEERING ECU ASSEMBLY (CANH, CANL)

27.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

28.

CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR ASSEMBLY)

(a) Disconnect the F36 yaw rate sensor assembly connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F36-3 (CANH) - F36-2 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Yaw Rate Sensor Assembly)


OK

REPLACE YAW RATE SENSOR ASSEMBLY


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO YAW RATE SENSOR ASSEMBLY (CANH, CANL)

29.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

30.

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

(a) Disconnect the F80 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

F80-14 (CA1H) - F80-13 (CA1L)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to Power Management Control ECU)


OK

REPLACE POWER MANAGEMENT CONTROL ECU


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POWER MANAGEMENT CONTROL ECU (CA1H, CA1L)

31.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

32.

CHECK FOR SHORT IN CAN BUS WIRES (FOUR WHEEL DRIVE CONTROL ECU)

(a) Disconnect the F47 four wheel drive control ECU connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F47-19 (CANH) - F47-20 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to Four Wheel Drive Control ECU)

Result

Result

Proceed to

OK (for VF2A)

A

OK (for VF4BM)

B

OK (for VF2BM)

C

NG

D


A

REPLACE FOUR WHEEL DRIVE CONTROL ECU


B

REPLACE FOUR WHEEL DRIVE CONTROL ECU


C

REPLACE FOUR WHEEL DRIVE CONTROL ECU


D

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO FOUR WHEEL DRIVE CONTROL ECU (CANH, CANL)

33.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

34.

CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY))

(a) Disconnect the A53 skid control ECU (brake actuator assembly) connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A53-25 (CANH) - A53-14 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))


OK

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) (CANH, CANL)

35.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

36.

CHECK FOR SHORT IN CAN BUS WIRES (AIR CONDITIONING AMPLIFIER ASSEMBLY)

(a) Disconnect the F42 air conditioning amplifier assembly connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F42-11 (CANH) - F42-12 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to Air Conditioning Amplifier Assembly)


OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AIR CONDITIONING AMPLIFIER ASSEMBLY (CANH, CANL)

37.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

38.

CHECK FOR SHORT IN CAN BUS WIRES (ECM)

(a) Disconnect the F50 ECM connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F50-32 (CANH) - F50-31 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to ECM)


OK

REPLACE ECM


NG

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CANH, CANL)

39.

CONNECT CONNECTOR

(a) Reconnect the F60 No. 3 junction connector connector.


NEXT

40.

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

(a) Disconnect the G13 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

F13-6 (CANH) - F13-14 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Front view of DLC3


NG

GO TO STEP 48


OK

41.

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

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

G13-5 (CANH) - G13-16 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)



NG

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


OK

42.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NAVIGATION RECEIVER ASSEMBLY)

HINT:

For vehicles without a navigation receiver assembly, go to "Check for Short in CAN Bus Wires (No. 4 Junction Connector - Radio and Display Receiver Assembly)".

(a) Disconnect the G14 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

G14-6 (CANH) - G14-17 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)


NG

GO TO STEP 44


OK

43.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Disconnect the G14 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

G14-6 (CANH) - G14-17 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 4 Junction Connector)


OK

REPAIR OR REPLACE NO. 4 JUNCTION CONNECTOR


NG

GO TO STEP 46

44.

CONNECT CONNECTOR

(a) Reconnect the G13 and G14 No. 4 junction connector connectors.


NEXT

45.

CHECK FOR SHORT IN CAN BUS WIRES (NAVIGATION RECEIVER ASSEMBLY)

(a) Disconnect the G37 navigation receiver assembly connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

G37-9 (CANH) - G37-10 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Navigation Receiver Assembly)


OK

REPLACE NAVIGATION RECEIVER ASSEMBLY


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NAVIGATION RECEIVER ASSEMBLY (CANH, CANL)

46.

CONNECT CONNECTOR

(a) Reconnect the G13 and G14 No. 4 junction connector connectors.


NEXT

47.

CHECK FOR SHORT IN CAN BUS WIRES (RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Disconnect the G49 radio and display receiver assembly connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

G49-9 (CANH) - G49-10 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Radio and Display Receiver Assembly)


OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO RADIO AND DISPLAY RECEIVER ASSEMBLY (CANH, CANL)

48.

CONNECT CONNECTOR

(a) Reconnect the G13 No. 4 junction connector connector.


NEXT

49.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)

(a) Disconnect the F59 No. 2 junction connector connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F59-1 (CANH) - F59-12 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to No. 2 Junction Connector)


NG

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)


OK

50.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F59-2 (CANH) - F59-13 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 2 Junction Connector)



NG

GO TO STEP 55


OK

51.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - AIRBAG SENSOR ASSEMBLY)

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F59-5 (CANH) - F59-16 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 2 Junction Connector)



NG

GO TO STEP 57


OK

52.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - STABILIZER CONTROL ECU)

HINT:

For vehicles without a kinetic dynamic suspension system, go to "Check for Short in CAN Bus Wires (No. 2 Junction Connector - Combination Meter Assembly)".

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F59-6 (CANH) - F59-17 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 2 Junction Connector)



NG

GO TO STEP 59


OK

53.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

HINT:

For 4WD vehicles, go to "Check for Short in CAN Bus Wires (No. 2 Junction Connector - Steering Angle Sensor (Spiral Cable Sub-assembly))".

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F59-3 (CANH) - F59-14 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to No. 2 Junction Connector)



NG

GO TO STEP 61


OK

54.

CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 JUNCTION CONNECTOR - STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY))

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F59-7 (CANH) - F59-18 (CANL)

Ignition switch off

200 Ω or higher

Text in Illustration

*a

Rear view of wire harness connector

(to No. 2 Junction Connector)



OK

REPAIR OR REPLACE NO. 2 JUNCTION CONNECTOR


NG

GO TO STEP 63

55.

CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.


NEXT

56.

CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

(a) Disconnect the F9 main body ECU (multiplex network body ECU) connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F9-14 (CANH) - F9-13 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to Main Body ECU (Multiplex Network Body ECU))


OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (CANH, CANL)

57.

CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.


NEXT

58.

CHECK FOR SHORT IN CAN BUS WIRES (AIRBAG SENSOR ASSEMBLY)

(a) Disconnect the F33 airbag sensor assembly connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F33-13 (CANH) - F33-22 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Airbag Sensor Assembly)


OK

REPLACE AIRBAG SENSOR ASSEMBLY


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO AIRBAG SENSOR ASSEMBLY (CANH, CANL)

59.

CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.


NEXT

60.

CHECK FOR SHORT IN CAN BUS WIRES (STABILIZER CONTROL ECU)

(a) Disconnect the F70 stabilizer control ECU connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F70-29 (CANH) - F70-28 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Rear view of wire harness connector

(to Stabilizer Control ECU)


OK

REPLACE STABILIZER CONTROL ECU


NG

REPAIR OR REPLACE CAN BUS BRANCH WIRE CONNECTED TO STABILIZER CONTROL ECU (CANH, CANL)

61.

CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.


NEXT

62.

CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER ASSEMBLY)

(a) Disconnect the F14 combination meter assembly connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F14-1 (CANH) - F14-2 (CANL)

Ignition switch off

108 to 132 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Combination Meter Assembly)


OK

REPLACE COMBINATION METER ASSEMBLY


NG

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (CANH, CANL)

63.

CONNECT CONNECTOR

(a) Reconnect the F59 No. 2 junction connector connector.


NEXT

64.

CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY))

(a) Disconnect the F19 steering angle sensor (spiral cable sub-assembly) connector.


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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

F19-4 (CANH) - F19-3 (CANL)

Ignition switch off

54 to 69 Ω

Text in Illustration

*a

Rear view of wire harness connector

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


OK

REPLACE STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY)


NG

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY) (CANH, CANL)

Open in CAN Main Wire
DESCRIPTION There may be an open circuit in the CAN main wire and/or DLC3 branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 69 Ω or higher. Sympto ...

Short to B+ in CAN Bus Line
DESCRIPTION There may be a short circuit between the CAN bus lines and +B when the resistance between terminals 6 (CANH) and 16 (BAT) or terminals 14 (CANL) and 16 (BAT) of the DLC3 is below 6 k ...

Other materials about Toyota 4Runner:

Precaution
PRECAUTION 1. IGNITION SWITCH EXPRESSIONS HINT: The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section. Expression Ig ...

Rear Upper Arm
Components COMPONENTS ILLUSTRATION Removal REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE REAR WHEEL 2. REMOVE REAR UPPE ...

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