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:

Air Outlet Damper Control Servo Motor Circuit (B1443/43)
DESCRIPTION The damper servo sub-assembly (mode damper servo) sends pulse signals to inform the No. 1 air conditioning amplifier assembly of the damper position. The No. 1 air conditioning amplifier assembly activates the motor (normal or reverse) based ...

No Sound can be Heard from Speakers
PROCEDURE 1. CHECK AUDIO SETTINGS (a) In sound output setting mode, set volume, fader and balance to the initial values and check that the sound is normal. OK: Audio system returns to normal. HINT: Sound quality adjustm ...

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