Toyota 4Runner: Open in One Side of CAN Branch Line

Toyota 4Runner Service Manual / Power Source / Network / Networking / Can Communication System / Open in One Side of CAN Branch Line

DESCRIPTION

If 2 or more ECUs and/or sensors do not appear on the Techstream "CAN Bus Check" screen, 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).

Symptom	Trouble Area
2 or more ECUs and/or sensors do not appear on the Techstream "CAN Bus Check" screen.	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 assembly2 Radio and Display Receiver Assembly3 Certification ECU (smart key ECU assembly)4 Power steering ECU assembly Yaw rate sensor assembly Power management control ECU4 Four wheel drive control ECU1 Skid control ECU (brake actuator assembly)5 Stabilizer control ECU6 Air conditioning amplifier assembly*7

Symptom

Trouble Area

2 or more ECUs and/or sensors do not appear on the Techstream "CAN Bus Check" screen.

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

*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:

Perform the following inspection for the ECUs (sensors) which are not displayed on the Techstream. If a malfunction cannot be identified, perform the following inspections for the ECUs (sensors) connected to the CAN communication system.

Do not remove the combination meter assembly and ECM, as they are the end parts of the circuit. If removed, CAN communication is not possible.

The open circuit confirmation of the combination meter assembly, ECM and main wire is performed in the Check CAN Bus Line procedure of "How to Proceed with Troubleshooting". This inspection only has procedures for checking for an open circuit on one side of the CAN branch wire.

PROCEDURE

1.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY))

HINT:

For 4WD vehicles, go to "Check for Open in One Side of CAN Branch Wire (Skid Control ECU (Master Cylinder Solenoid))".

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Skid Control (ABS/VSC/TRAC)" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Skid Control (ABS/VSC/TRAC)" not displayed on the Techstream	B

GO TO STEP 3

2.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) BRANCH WIRE)

(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 ).

(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))

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY))

3.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU (MASTER CYLINDER SOLENOID))

HINT:

For 2WD vehicles, go to "Check for Open in One Side of CAN Branch Wire (Stabilizer Control ECU)".

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Skid Control (ABS/VSC/TRAC)" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Skid Control (ABS/VSC/TRAC)" not displayed on the Techstream	B

GO TO STEP 5

4.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU (MASTER CYLINDER SOLENOID) BRANCH WIRE)

(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 ).

(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))

REPLACE SKID CONTROL ECU (MASTER CYLINDER SOLENOID)

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (SKID CONTROL ECU (MASTER CYLINDER SOLENOID))

5.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (STABILIZER CONTROL ECU)

HINT:

For vehicles without a kinetic dynamic suspension system, go to "Check for Open in One Side of CAN Branch Wire (Main Body ECU (Multiplex Network Body ECU))".

(a) Disconnect the F70 stabilizer control ECU connector.

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"KDSS" not displayed on the Techstream	A
Several ECUs and sensors in addition to "KDSS" not displayed on the Techstream	B

GO TO STEP 7

6.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (STABILIZER CONTROL ECU BRANCH WIRE)

(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 ).

(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)

REPLACE STABILIZER CONTROL ECU

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (STABILIZER CONTROL ECU)

7.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Main Body" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Main Body" not displayed on the Techstream	B

GO TO STEP 9

8.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) BRANCH WIRE)

(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 ).

(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))

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

9.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (AIRBAG SENSOR ASSEMBLY)

(a) Disconnect the F33 airbag sensor assembly connector.

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Airbag" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Airbag" not displayed on the Techstream	B

GO TO STEP 11

10.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (AIRBAG SENSOR ASSEMBLY BRANCH WIRE)

(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 ).

(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)

REPLACE AIRBAG SENSOR ASSEMBLY

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (AIRBAG SENSOR ASSEMBLY)

11.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY))

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Spiral cable (Steering Angle Sensor)" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Spiral cable (Steering Angle Sensor)" not displayed on the Techstream	B

GO TO STEP 13

12.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY) BRANCH WIRE)

(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 ).

(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))

REPLACE STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY)

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (STEERING ANGLE SENSOR (SPIRAL CABLE SUB-ASSEMBLY))

13.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (NAVIGATION RECEIVER ASSEMBLY)

HINT:

For vehicles without a navigation receiver assembly, go to "Check for Open in One Side of CAN Branch Wire (Radio and Display Receiver Assembly)".

(a) Disconnect the G37 navigation receiver assembly connector.

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Display and Navigation (AVN1)" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Display and Navigation (AVN1)" not displayed on the Techstream	B

GO TO STEP 15

14.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (NAVIGATION RECEIVER ASSEMBLY BRANCH WIRE)

(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 ).

(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)

REPLACE NAVIGATION RECEIVER ASSEMBLY

REPAIR OR REPLACE CAN BRACH WIRE OR CONNECTOR (NAVIGATION RECEIVER ASSEMBLY)

15.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (RADIO AND DISPLAY RECEIVER ASSEMBLY)

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Display and Navigation (AVN1)" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Display and Navigation (AVN1)" not displayed on the Techstream	B

GO TO STEP 17

16.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (RADIO AND DISPLAY RECEIVER ASSEMBLY BRANCH WIRE)

(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 ).

(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)

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO RADIO AND DISPLAY RECEIVER ASSEMBLY

17.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

HINT:

For vehicles without a smart key system, go to "Check for Open in One Side of CAN Branch Wire (Air Conditioning Amplifier Assembly)".

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Certification (Smart)" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Certification (Smart)" not displayed on the Techstream	B

GO TO STEP 19

18.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) BRANCH WIRE)

(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 ).

(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))

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

19.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (POWER MANAGEMENT CONTROL ECU)

(a) Disconnect the F80 power management control ECU connector.

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Power Management1" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Power Management1" not displayed on the Techstream	B

GO TO STEP 21

20.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (POWER MANAGEMENT CONTROL ECU BRANCH WIRE)

(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 ).

(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)

REPLACE POWER MANAGEMENT CONTROL ECU

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (POWER MANAGEMENT CONTROL ECU)

21.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY)

HINT:

For vehicles with a smart key system, go to "Check for Open in One Side of CAN Branch Wire (Four Wheel Drive Control ECU)".

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Air Conditioning Amplifier" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Air Conditioning Amplifier" not displayed on the Techstream	B

GO TO STEP 23

22.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY BRANCH WIRE)

(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 ).

(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)

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY)

23.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (FOUR WHEEL DRIVE CONTROL ECU)

HINT:

For 2WD vehicles, go to "Check for Open in One Side of CAN Branch Wire (Yaw Rate Sensor Assembly)".

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Four Wheel Drive Control" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Four Wheel Drive Control" not displayed on the Techstream	B

GO TO STEP 25

24.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (FOUR WHEEL DRIVE CONTROL ECU BRANCH WIRE)

(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 ).

(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

REPLACE FOUR WHEEL DRIVE CONTROL ECU

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (FOUR WHEEL DRIVE CONTROL ECU)

25.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (YAW RATE SENSOR ASSEMBLY)

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

(b) Select "CAN Bus Check" on the Techstream (See page ).

Result

Result	Proceed to
"Yaw Rate Sensor" not displayed on the Techstream	A
Several ECUs and sensors in addition to "Yaw Rate Sensor" not displayed on the Techstream	B

GO TO STEP 27

26.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (YAW RATE SENSOR ASSEMBLY BRANCH WIRE)

(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 ).

(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)

REPLACE YAW RATE SENSOR ASSEMBLY

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (YAW RATE SENSOR ASSEMBLY)

27.	CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (POWER STEERING ECU ASSEMBLY BRANCH WIRE)

(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 ).

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

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)

REPLACE POWER STEERING ECU ASSEMBLY

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (POWER STEERING ECU ASSEMBLY)

Short to GND in CAN Bus Line

DESCRIPTION There may be a short circuit between the CAN bus lines and GND when the resistance between terminals 6 (CANH) and 4 (CG) or terminals 14 (CANL) and 4 (CG) of the DLC3 is below 200 Ω. ...

Lin Communication System

...

Other materials about Toyota 4Runner:

Relay
On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. REMOVE HEADLIGHT RELAY (a) Remove the headlight relay from the engine room relay box. 2. INSPECT HEADLIGHT RELAY (a) Measure the re ...

Back Door Entry Lock Function does not Operate
DESCRIPTION If the back door entry lock function does not operate but the back door unlock function operates, the communication line between the vehicle and electrical key transmitter is normal. The entry lock switch circuit (back door control switch → ...