Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: 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.
Wireless Door Lock Control System

Symptom

Suspected Area

Link

Only wireless control function is inoperative

Power door lock control system

Key reminder warning system

Door control transmitter assembly

Transmitter battery

Wave interference

Main body ECU (Multiplex network body ECU)

Unmatching recognition code

Wire harness or connector

Door control receiver

Only answer-back function does not operate properly

Check customize setting

Perform operation check

Lighting system (INT) (Door unlock detection switch circuit)

Lighting system (EXT) (Hazard warning switch circuit)

Wireless door lock buzzer

Main body ECU (Multiplex network body ECU)

Only automatic lock function does not operate properly

Perform operation check

Key reminder warning system

Lighting system (INT) (Front door courtesy light switch circuit)

Lighting system (INT) (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 (INT)

Main body ECU (Multiplex network body ECU)

Only panic alarm function does not operate

Perform operation check

Theft deterrent system

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

Power door lock control system

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

Power door lock control system

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