Toyota Tundra Service Manual: 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.

Climate Control Seat System

Symptom

Suspected Area

See page

Both climate control seats do not operate

IG1 NO.5 relay

-

IG1 NO.5 fuse

-

Harness or connector

-

Air conditioning amplifier assembly

Climate control seat system does not operate (for LH)

ECU-IG1 NO.4 fuse

-

Harness or connector

-

Air conditioning control assembly (seat heater switch [for LH])

Air conditioning amplifier assembly

Climate control seat system does not operate (for RH)

ECU-IG1 NO.4 fuse

-

Harness or connector

-

Air conditioning control assembly (seat heater switch [for RH])

Air conditioning amplifier assembly

Seat heater LH does not operate

Air conditioning control assembly (seat heater switch [for LH])

Seat heater control sub-assembly LH

Front seat cushion heater assembly LH

Front seatback heater assembly LH

Harness or connector

-

Air conditioning amplifier assembly

Seat heater RH does not operate

Air conditioning control assembly (seat heater switch [for RH])

Seat heater control sub-assembly RH

Front seat cushion heater assembly RH

Front seatback heater assembly RH

Harness or connector

-

Air conditioning amplifier assembly

Seat blower does not operate (for LH)

Air conditioning control assembly (seat heater switch [for LH])

Seat cushion climate control blower assembly LH

-

Seatback climate control blower LH

-

Air conditioning amplifier assembly

Harness or connector

-

Seat blower does not operate (for RH)

Air conditioning control assembly (seat heater switch [for RH])

Seat cushion climate control blower assembly RH

-

Seatback climate control blower RH

-

Air conditioning amplifier assembly

Harness or connector

-

    Parts Location

    System Description

    See More:

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