Toyota CH-R Service Manual: Problem Symptoms Table



  • 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.
Tire Pressure Warning System


Suspected Area


Tire pressure warning light does not illuminate despite tire pressure decreasing


Check Data List (ID Tire Inflation Pressure)

ID code check (Registration)

Tire pressure warning light remains illuminated (Goes off during initial check)

Tire pressure warning light circuit

Tire pressure warning light remains illuminated (Illuminates during initial check)

Operation Check

Check Data List (ID Tire Inflation Pressure)

Tire pressure adjustment

ID code check (Registration)


DTC check cannot be done using SST check wire

TC and CG terminal circuit

ECU power source circuit

Initialization cannot be done

Tire pressure warning reset switch

    Test Mode Procedure
    TEST MODE PROCEDURE TEST MODE (SIGNAL CHECK MODE) PROCEDURE HINT: When entering test mode (signal check mode), the tire pressure warning ECU and receiver sets all the test mode (signal ...

    Terminals Of Ecu
    TERMINALS OF ECU CHECK TIRE PRESSURE WARNING ECU AND RECEIVER (a) Disconnect the M23 tire pressure warning ECU and receiver connector and measure the voltage or resistance on the wire harness side ...

    Other materials:

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