Toyota CH-R 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.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Symptom

Suspected Area

Link

Only wireless control function is inoperative

Proceed to "Only wireless control function is inoperative"

Only answer-back function does not operate properly

Proceed to "No answer-back"

Only automatic lock function does not operate properly

Perform operation check

Key reminder warning system

Lighting system (front door courtesy light switch circuit)

Lighting system (rear door courtesy light switch circuit)

Main body ECU (multiplex network body ECU)

-

Only illuminated entry function does not operate

Perform operation check

Lighting system

Main body ECU (multiplex network body ECU)

-

Only door ajar warning function does not operate*1

Perform operation check

Lighting system (Door courtesy switch circuit)

Main body ECU (Multiplex network body ECU)

-

Only panic alarm function does not operate*1

Perform operation check

Lighting system (Int) (Interior lights)

Lighting system (EXT) (Headlights, taillights, hazard warning lights)

horn system

Instrument panel junction block assembly

-

Main body ECU (Multiplex network body ECU)

-

When returning to the vehicle, although door unlock operation was not performed, doors were in an unlocked state.

Proceed to "Improper Operation"

When returning to the vehicle, although door lock operation was not performed, doors were in a locked state.

Proceed to "Improper Operation"

  • *1: w/ Toyota Safety Sense P
    Customize Parameters
    CUSTOMIZE PARAMETERS CUSTOMIZE WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Entry and Start System) HINT: The following items can be customized. NOTICE: When the customer requests a change in a ...

    Diagnosis System
    DIAGNOSIS SYSTEM CHECK DLC3 (a) Check the DLC3. Click here INSPECT BATTERY VOLTAGE (a) Measure the vehicle battery voltage. Standard Voltage: 11 to 14 V If the voltage is below 11 V, rech ...

    Other materials:

    Toyota CH-R Service Manual > Seat Belt Warning System(w/o Occupant Classification System): System Description
    SYSTEM DESCRIPTION SEAT BELT WARNING SYSTEM DESCRIPTION (a) Seat belt warning light operation for driver seat belt: The seat belt warning light on the combination meter assembly blinks or turns off in accordance with the driver seat belt state and vehicle speed. (b) Seat belt warning light ope ...

    Toyota CH-R Service Manual > Airbag System: Short in Driver Side Squib Circuit (B1800/51-B1803/51)
    DESCRIPTION The driver side squib circuit consists of the airbag sensor assembly, spiral cable with sensor sub-assembly and horn button assembly. The airbag sensor assembly uses this circuit to deploy the airbag when deployment conditions are met. These DTCs are stored when a malfunction is d ...

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