Toyota 4Runner manuals

Toyota 4Runner: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the front power seat control system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP


NEXT

2.

INSPECT BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.


NEXT

3.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally (See page ).


Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B


B

GO TO CAN COMMUNICATION SYSTEM


A

4.

CHECK DTC OUTPUT*

(a) Check for DTCs (See page ).


(b) Clear the DTCs (See page ).


(c) Recheck for DTCs (See page ).


Result

Proceed to

DTC is not output

A

DTC is output

B


B

GO TO STEP 7


A

5.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table (See page
).

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B


B

GO TO STEP 7


A

6.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check (See page )


(b) Data List / Active Test (See page )


(c) Terminals of ECU (See page )



NEXT

7.

REPAIR OR REPLACE


NEXT

8.

CONFIRMATION TEST


NEXT

END

System Diagram
SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line ECM Main Body ECU (Multiplex Network Body ECU) ...

Operation Check
OPERATION CHECK 1. CHECK FRONT POWER SEAT FUNCTION (a) Check the basic functions. Text in Illustration *a Sliding Function *b Front Vertical Func ...

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