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.
|
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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Terminals Of Ecu
TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assem
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a
Only Wireless Control Function is Inoperative
DESCRIPTION The door control receiver receives signals from the door control transmitter assembly and sends these signals to the main body ECU (multiplex network body ECU). The main body ECU (multiple
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On-vehicle Inspection
ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT
CAUTION:
When working near the engine room while the engine has started or the power source mode is ignition switch to ON, do not touch the rotating components such as the fan, etc.
Touching rotating components such as the fan, etc. could re
Inspection
INSPECTION PROCEDURE 1. INSPECT LOW PITCHED HORN ASSEMBLY
(a) Check the operation.
(1) Apply auxiliary battery voltage and check the operation of the low pitched horn assembly according to the table below.
OK:
Condition Specified Condition
Auxiliary battery positive (+) - A2
