Toyota 4Runner manuals

Toyota 4Runner: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • The wireless door lock control system troubleshooting procedures are based on the premise that the power door lock control system is operating normally. Check the power door lock control system first before troubleshooting the wireless door lock control system.
  • Use these procedures to troubleshoot the wireless door lock 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 FOR DTC*

(a) Check for DTCs and note any codes that are output (See page ).


(b) Clear the DTCs (See page ).


(c) Recheck for DTCs. Based on the DTCs output above, try to force output of the same LIN communication system DTC or wireless door lock control system DTC by reproducing the symptoms indicated by the DTC.

Result

Proceed to

DTC is not output

A

LIN communication system DTC is output

B

Wireless door lock control system DTC is output

C


B

GO TO LIN COMMUNICATION SYSTEM


C

GO TO DIAGNOSTIC TROUBLE CODE CHART


A

4.

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 6


A

5.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check (See page ).


(b) Terminals of ECU (See page ).


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



NEXT

6.

REPAIR OR REPLACE


NEXT

7.

CONFIRMATION TEST


NEXT

END

System Description
SYSTEM DESCRIPTION 1. WIRELESS DOOR LOCK CONTROL SYSTEM DESCRIPTION (a) This system locks/unlocks the vehicle doors remotely. The wireless control system has the following features: The do ...

Operation Check
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