Toyota Corolla Cross: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration.*
- for HEV Model: Click here
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- for Gasoline Model: Click here
- *: w/ Start Key System
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 |
|---|---|---|
| All doors lock/unlock functions do not operate via door key cylinder. |
Main body ECU (Multiplex network body ECU) |
|
|
Front door lock with motor assembly (for Driver Side) | ||
|
Harness or connector | ||
|
All doors lock/unlock functions do not operate via master switch. |
Main body ECU (Multiplex network body ECU) |
|
|
Multiplex network master switch assembly | ||
|
All doors lock/unlock functions do not operate via door control switch. |
Main body ECU (Multiplex network body ECU) |
|
|
Door control switch assembly | ||
|
Harness or connector | ||
|
Power distribution box assembly | ||
|
All doors lock function do not operate via door control switch and door key cylinder. |
Power distribution box assembly |
|
|
Main body ECU (Multiplex network body ECU) |
| |
|
All doors unlock function do not operate via door control switch and door key cylinder. |
Power distribution box assembly |
|
|
Main body ECU (Multiplex network body ECU) |
| |
|
Only driver door lock/unlock functions do not operate. |
Front door lock with motor assembly (for Driver Side) |
|
|
Harness or connector |
- | |
| Power distribution box assembly |
| |
|
Only driver door unlock function does not operate (lock function operates). |
Front door lock with motor assembly (for Driver Side) |
|
|
Harness or connector |
- | |
| Main body ECU (Multiplex network body ECU) |
| |
|
Power distribution box assembly |
| |
|
Only front passenger door lock/unlock functions do not operate. |
Front door lock with motor assembly (for Passenger Side) |
|
|
Harness or connector |
- | |
|
Only rear door (for Driver Side) lock/unlock functions do not operate. |
Rear door lock with motor assembly (for Driver Side) |
|
|
Harness or connector |
- | |
| Power distribution box assembly |
| |
|
Only rear door (for Front Passenger Side) lock/unlock functions do not operate. |
Rear door lock with motor assembly (for Passenger Side) |
|
|
Harness or connector |
- | |
| Power distribution box assembly |
| |
|
Speed-sensitive automatic door lock function does not operate (meter/gauge system operates normally). |
CAN communication system*5 |
|
|
CAN communication system*6 |
| |
|
Main body ECU (multiplex network body ECU) |
| |
|
Shift-linked automatic door lock/unlock functions do not operate (hybrid transaxle system operates normally). |
CAN communication system*5 |
|
|
CAN communication system*6 |
| |
|
Main body ECU (multiplex network body ECU) |
| |
|
ECM |
| |
|
Key lock-in prevention function does not operate. |
Front door courtesy light switch assembly LH |
|
|
Front door courtesy light switch assembly RH |
| |
|
Rear door courtesy light switch assembly LH |
| |
|
Rear door courtesy light switch assembly RH |
| |
|
Front door lock with motor assembly LH |
| |
|
Front door lock with motor assembly RH |
| |
|
Rear door lock with motor assembly LH |
| |
|
Rear door lock with motor assembly RH |
| |
|
Main body ECU (Multiplex network body ECU) |
| |
|
Power distribution box assembly |
| |
|
Only back door open function does not operate.*1 |
Check customize setting (Unlock Key Twice Function "Disable") |
|
|
Power back door system |
| |
|
Only back door open function does not operate.*2 |
SMART KEY SYSTEM (for Entry Function) |
|
|
Back door opener switch assembly | ||
|
Back door lock with courtesy light switch assembly | ||
|
Harness or connector | ||
|
Power distribution box assembly | ||
|
Main body ECU (Multiplex network body ECU) | ||
|
Lock operation continues even after doors have been locked.*4 |
Front door lock with motor assembly LH |
|
|
Front door lock with motor assembly RH |
| |
|
Rear door lock with motor assembly LH |
| |
|
Rear door lock with motor assembly RH |
| |
|
Harness or connector |
- | |
| Main body ECU (Multiplex network body ECU) |
| |
|
Power distribution box assembly |
| |
|
Only remote door LOCK/UNLOCK functions do not operate (power door lock operation is normally). *3 |
Telematics system |
|
- *1: w/ Power Back Door System
- *2: w/o Power Back Door System
- *3: w/ Telematics Transceiver
- *4: When the door unlock detection switch detects an unlock position signal after a door lock operation has been performed, a door lock operation will be performed 2 times.
- *5: for HEV Model
- *6: for Gasoline Model
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(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assem
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REMOVAL
CAUTION / NOTICE / HINT
COMPONENTS (REMOVAL)
Procedure
Part Name Code
1
FRONT WHEEL
-
-
-
-
2
WHEEL OPENING MOULDING
-
