Toyota CH-R Service Manual: Problem Symptoms Table

Toyota CH-R Service Manual / Seat / Seat Heater System / Problem Symptoms Table



If the battery voltage is low, the seat heater system may not operate. Refer to Data List for power steering system.

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  • 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.
Seat Heater System


Suspected Area


Driver side seat heater does not operate

Proceed to "Seat Heater for Front Left Seat does not Operate"

Front passenger side seat heater does not operate

Proceed to "Seat Heater for Front Right Seat does not Operate"

    Operation Check
    OPERATION CHECK CHECK FRONT SEAT HEATER (a) Turn the ignition switch to ON. (b) Turn the seat heater switch on and check that the indicator illuminates and the surface of the front seat warms up. ...

    Terminals Of Ecu
    TERMINALS OF ECU CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for TMMT Made) (a) Disconnect the air conditioning amplifier assembly connector. (b) Measure the voltage and resistance according to th ...

    Other materials:

    Toyota CH-R Service Manual > Rear Combination Light Assembly(for Led Type): Removal
    REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. REMOVE REAR COMBINATION LIGHT COVER (a) Disengage the claws to remove the rear combination light cover as shown in the illustra ...

    Toyota CH-R Service Manual > Door Control Transmitter(w/ Smart Key System): Installation
    INSTALLATION CAUTION / NOTICE / HINT NOTICE: Take extra care when handling these precision electronic components. PROCEDURE 1. INSTALL TRANSMITTER BATTERY (a) Install a new transmitter battery with the positive (+) side facing upward, as shown in the illustration. NOTICE: Do not be ...

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