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.
Power Door Lock Control System

Symptom

Suspected Area

See page

No Door Lock/Unlock Functions Operate Via Master Switch or Driver Side Door Key Cylinder

Proceed to "All Doors LOCK/UNLOCK Functions Operate Via Master Switch or Driver Side Door Key Cylinder"


Only Driver Door Lock/Unlock Functions do not Operate

Front door lock assembly LH


Harness or connector

-

Main body ECU (Multiplex network body ECU)

-

Driver side junction block assembly

-

Only Passenger Door Lock/Unlock Functions do not Operate

Front door lock assembly RH


Harness or connector

-

Main body ECU (Multiplex network body ECU)

-

Driver side junction block assembly

-

Only Rear Door LH Lock/Unlock Functions do not Operate

Rear door lock assembly LH


Harness or connector

-

Main body ECU (Multiplex network body ECU)

-

Driver side junction block assembly

-

Only Rear Door RH Lock/Unlock Functions do not Operate

Rear door lock assembly RH


Harness or connector

-

Main body ECU (Multiplex network body ECU)

-

Driver side junction block assembly

-

Only Back Door cannot be Operated

Proceed to "Only Back Door cannot be Operated"


Initialization
INITIALIZATION 1. PROCEDURES NECESSARY WHEN CABLE IS DISCONNECTED/RECONNECTED TO BATTERY TERMINAL NOTICE: After the battery is reconnected, be sure to wait 10 seconds or more before att ...

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

Other materials about Toyota 4Runner:

Automatic door locking and unlocking systems
The following functions can be set or canceled: Setting and canceling the functions To switch between setting and canceling, follow the procedure below: Vehicles without a smart key system Close all the doors and turn the engine switch to the “ON ...

Components
COMPONENTS ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ...

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