Toyota 4Runner manuals

Toyota 4Runner: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use these procedures to troubleshoot the smart key 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.

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B


B

GO TO CAN COMMUNICATION SYSTEM


A

4.

CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the LIN communication system is functioning normally.

Result

Proceed to

LIN DTC is not output

A

LIN DTC is output

B


B

GO TO LIN COMMUNICATION SYSTEM


A

5.

CHECK FOR DTC*

(a) Check for DTCs. Based on the DTCs output, try to cause the same steering lock system DTC, engine immobiliser system DTC or smart key system (for Entry Function) DTC to be stored by reproducing the symptoms indicated by the DTC.

Result

Proceed to

DTC is not output

A

Steering lock system DTC is output

B

Engine immobiliser system DTC is output

C

Smart key system (for Entry Function) DTC is output

D


B

GO TO STEERING LOCK SYSTEM


C

GO TO ENGINE IMMOBILISER SYSTEM


D

GO TO DIAGNOSTIC TROUBLE CODE CHART


A

6.

PROBLEM SYMPTOMS TABLE

(a) Refer to the 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 8


A

7.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check (See page ).


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


(c) Terminals of ECU (See page ).



NEXT

8.

REPAIR OR REPLACEMENT


NEXT

9.

CONFIRMATION TEST


NEXT

END

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