Toyota Corolla Cross: All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch
DESCRIPTION
The main body ECU (multiplex network body ECU) receives switch signals from the multiplex network master switch assembly via LIN communication system. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- The power door lock control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power door lock control system after confirming that the communication systems are functioning properly.
Click here
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- If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration.*
- for HEV Model: Click here
- for Gasoline Model: Click here
- *: w/ Start Key System
- for HEV Model: Click here
PROCEDURE
|
1. | CHECK POWER WINDOW CONTROL SYSTEM |
(a) Check the power window operation using the multiplex network master switch assembly.
OK:
Each power window operates normally.
| OK | .gif) | REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY |
|
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| 2. |
READ VALUE USING GTS (DOOR LOCK SWITCH STATUS, DOOR UNLOCK SWITCH STATUS) |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Master Switch > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Door Lock Switch Status |
Multiplex network master switch assembly lock signal |
OFF or ON | OFF: Lock side of multiplex network master switch assembly not pushed ON: Lock side of multiplex network master switch assembly pushed |
- |
| Door Unlock Switch Status |
Multiplex network master switch assembly unlock signal |
OFF or ON | OFF: Unlock side of multiplex network master switch assembly not pushed ON: Unlock side of multiplex network master switch assembly pushed |
- |
|
Tester Display |
|---|
| Door Lock Switch Status |
|
Door Unlock Switch Status |
OK:
On the GTS screen, ON or OFF is displayed for each item according to the table above.
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG | | REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY |
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SEE MORE:
Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) When troubleshooting a vehicle with a diagnosis system, the
only difference from the usual troubleshooting procedure is connecting the GTS to
the vehicle and reading various data output from the clearance warning ECU assembly.
The clearance warning ECU assembl
Inspection
INSPECTION PROCEDURE 1. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY LH
(a) Measure the resistance according to the value(s) in the table below.
*a Component without harness connected
(Front Seat Cushion Heater Assembly LH)
- -
Standard Resistance:
Tester Connectio
