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.
Front Power Seat Control System (for Driver Side)

Symptom

Suspected Area

See page

Front power seat does not operate with front power seat switch

Proceed to "Front Power Seat does not Operate with Front Power Seat Switch"


Power seat position is not memorized

Proceed to "Power Seat Position is not Memorized"


Power seat does not return to memorized position

Front power seat switch LH

-

Main body ECU (multiplex network body ECU)

-

Lumbar support function does not operate

Power seat switch assembly


Separate type front seatback spring assembly LH (Lumbar support motor)


Harness or connector

-

Front Power Seat Control System (for Passenger Side)

Symptom

Suspected Area

See page

All functions do not operate

Front power seat switch RH


Harness or connector

-

Only slide function does not operate

Front power seat switch RH


Separate type front seat cushion spring assembly (Slide motor)


Harness or connector

-

Only reclining function does not operate

Front power seat switch RH


Separate type front seatback spring assembly RH (Reclining motor)


Harness or connector

-

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 ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK FRONT POWER SEAT SWITCH LH (a) Disconnect the b18 and b19 connectors from the front power seat switch LH. (b) Measure the voltage and resistance according to the value(s ...

Other materials about Toyota 4Runner:

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Tire pressure warning system DTC Code Detection Item See page C2111/11 Transmitter ID1 Operation Stop C2112/12 Transmitter ID2 ...

Disabling the TRAC/VSC systems (2WD models)
If the vehicle gets stuck in fresh snow or mud, the TRAC/VSC systems may reduce power from the engine to the wheels. You may need to turn the system off to enable you to rock the vehicle in order to free it. Turning off the TRAC system only (turning on th ...

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