Toyota Corolla Cross: Lock Function does not Operate (Close &)
DESCRIPTION
The back door control switch signal is sent to the multiplex network door ECU. If the power back door system does not operate when the back door control switch is operated, the back door control switch circuit may be malfunctioning.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- If the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU has been performed, initialize the power back door system.
Click here
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- Check the smart key system (for Entry Function) first before troubleshooting the power back door system.
for HEV Model: Click here
for Gasoline Model: Click here
PROCEDURE
|
1. | READ VALUE USING GTS |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Back Door > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Close and Lock Switch | Back door control switch signal |
OFF or ON | ON: Back door control switch pressed OFF: Back door control switch not pressed |
- |
|
Tester Display |
|---|
| Close and Lock Switch |
OK:
The display is as specified in the normal condition column.
| OK | .gif) | REPLACE MULTIPLEX NETWORK DOOR ECU |
|
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| 2. |
INSPECT BACK DOOR CONTROL SWITCH |
Click here
| NG | |
REPLACE BACK DOOR CONTROL SWITCH |
|
| 3. |
CHECK HARNESS AND CONNECTOR (BACK DOOR CONTROL SWITCH - MULTIPLEX NETWORK DOOR ECU AND BODY GROUND) |
(a) Disconnect the U39 multiplex network door ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
U12-5 (MSW) - U39-4 (CLSW) |
Always | Below 1 Ω |
|
U12-2 (MSE) - Body ground |
Always | Below 1 Ω |
|
U12-5 (MSW) or U39-4 (CLSW) - Body ground |
Always | 10 kΩ or higher |
| OK | | REPLACE MULTIPLEX NETWORK DOOR ECU |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Power Back Door cannot be Operated Frequently
DESCRIPTION If the power back door system does not operate, a vehicle malfunction, environmental problem, and customer (including passenger) operation are possible causes. Using Vehicle Control Histor
Power Back Door Touch Sensor
RemovalREMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL)
Procedure Part Name Code
1 POWER BACK DOOR UNIT ASSEMBLY SET
68920 -
- -
2 POWER BAC
Power Back Door Warning Buzzer
RemovalREMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL)
Procedure Part Name Code
1 BACK DOOR TRIM UPPER PANEL ASSEMBLY
64790B -
- -
2 BACK D
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The air outlets and air volume
changes according to the
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■ Adjusting the position of
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DCM System Internal Failure (B15A804)
DESCRIPTION
This DTC is stored when an internal circuit malfunction is detected
by the DCM (telematics transceiver) self check.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
B15A804
DCM System Internal Failure
