Toyota Corolla Cross: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
If the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors has been disconnected, initialize the power back door system.
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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 |
|---|---|---|
|
Power back door cannot be operated using any switch |
Meter / gauge system |
|
|
Power back door sensor assembly RH | ||
|
Power back door sensor assembly LH | ||
|
Harness and connector | ||
|
Multiplex network door ECU | ||
|
Power back door does not operate using the cabin switch |
Power back door control switch |
|
|
Harness and connector | ||
|
Multiplex network door ECU | ||
|
Main body ECU (multiplex network body ECU) | ||
|
Power back door does not operate outside switch |
No. 1 power back door control switch |
|
|
Harness and connector | ||
|
Multiplex network door ECU | ||
|
Power back door cannot be opened using the back door opener switch assembly (open switch) (back door entry unlock function is normally) |
Multiplex network door ECU |
|
|
Power back door cannot be operated using back door opener switch |
Smart key system (for Entry Function)*1 |
|
|
Smart key system (for Entry Function)*2 |
| |
|
Power back door close and lock function does not operate |
Back door control switch |
|
|
Wire harness and connector | ||
|
Multiplex network door ECU | ||
|
Back door closer does not operate |
Back door visual check (foreign objects) |
|
|
Back door lock with courtesy light switch assembly | ||
|
Harness and connector | ||
|
Multiplex network door ECU | ||
|
The back door closer does not reverse rotation operation properly when the back door opener switch assembly (open switch) is operated (during the back door closer operation). |
Smart key system (for Entry Function)*1 |
|
|
Smart key system (for Entry Function)*2 |
| |
|
Multiplex network door ECU |
| |
|
Power back door warning system does not operate |
Wireless door lock control system |
|
|
Harness and connector | ||
|
Power back door warning buzzer | ||
|
Multiplex network door ECU | ||
|
Jam protection function activates during power back door operation |
Back door visual check (foreign objects) |
|
|
Power back door sensor assembly RH | ||
|
Power back door sensor assembly LH | ||
|
Harness and connector | ||
|
Multiplex network door ECU | ||
|
Power back door cannot be operated frequently |
Refer to "Power Back Door cannot be Operated Frequently". |
|
- *1: for HEV Model
- *2: for Gasoline Model
READ NEXT:
Terminals Of Ecu
TERMINALS OF ECU CHECK MULTIPLEX NETWORK DOOR ECU
(a) Disconnect the U39, U40, U41 and U42 multiplex network door ECU connectors.
(b) Measure the voltage and resistance according to the value(s) in
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever a DTC is detected, the multiplex network door ECU stores the current vehicle state as Freeze Frame Data.
CHECK FREEZE FRAME DATA (a) Enter the followi
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT:
Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non
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MONITOR DESCRIPTION The ECM continuously monitors its internal memory status. This self-check ensures that the ECM is functioning properly. The ECM memory status is diagnosed by internal mirroring of the main CPU and sub CPU to detect Random Access Memory (RAM) errors. If outputs from these CPUs are
Stop & Start system information
Stop & Start system operation
status notification
Displays the status of the Stop &
Start system with a pop-up display.
Stop & Start system settings
The length of time of the Stop &
Start system will operate when the
"A/C" switch of the air conditioning
system is on can be set
