Toyota 4Runner manuals

Toyota 4Runner: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Wireless Door Lock Control System

Symptom

Suspected Area

See page

Wireless control function and entry function do not operate

Proceed to "All Door Entry Lock / Unlock Functions and Wireless Functions do not Operate"


Wireless control function does not operate but entry function operates

Replace door control transmitter

-

Only answer-back function does not operate

Proceed to "No Answer-Back"


Only automatic lock function does not operate

Proceed to "Door Courtesy Switch Circuit"


Proceed to "Back Door Courtesy Switch Circuit"


Main body ECU


Only illuminated entry function does not operate

Lighting system


Only door ajar warning function does not operate

Proceed to "Door Courtesy Switch Circuit"


Proceed to "Back Door Courtesy Switch Circuit"


Main body ECU


Only panic alarm function does not operate

Theft deterrent system


Operation Check
OPERATION CHECK 1. NOTICES WHEN CHECKING (a) Wireless door lock/unlock function: The wireless door lock control function operates only when the following conditions are met: The engine sw ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Remove the main body ECU (multiplex network body ECU) (See page ). (b) Measure th ...

Other materials about Toyota 4Runner:

Clearance Warning Ecu
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. N ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use these procedures to troubleshoot the LIN communication system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT ...

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