If the manual up and down functions operate normally but the auto up and down functions do not, the power window control system may be in fail-safe mode.
If power window initialization has not been performed, the auto up and down functions will not operate.
If the power window regulator motor assembly (for driver door) has been replaced with a new one, initialize the power window control system.
The power window control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power window control system after confirming that the communication system is functioning properly.
Check that power window system customize setting "D Window Auto Up Function" and "D Window Auto Down Function" are set to "Enable" before performing the following procedure.
After the catch protection function has operated, the auto up function will not operate the first time the power window auto up switch is operated. The auto up function will operate normally after the first power window switch operation.
Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.*1
*1: w/ Smart Entry and Start System
If the pulse sensor built into the power window regulator motor assembly (for driver door) is malfunctioning, the power window control system will enter fail-safe mode. The remote up and down and auto up and down functions cannot be operated during fail-safe mode. However, the power window can be closed by holding the multiplex network master switch assembly at the auto up position, and opened manually by pushing down the multiplex network master switch assembly.
Initialize the power window regulator motor assembly (for driver door).
Check that the driver door power window moves when the auto up and down functions of the multiplex network master switch assembly are operated.
Driver door auto up and down functions are normal.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| D Door Power Window AUTO Switch | Driver door power window auto switch signal | OFF or ON | OFF: Driver door power window auto up or auto down switch not being operated
ON: Driver door power window auto up or auto down switch being operated |
- |
| Tester Display |
|---|
| D Door Power Window AUTO Switch |
On the GTS screen, ON or OFF is displayed accordingly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| D Door Power Window AUTO Switch | Driver door power window auto switch | OFF or ON | OFF: Auto up or auto down switch not being operated
ON: Auto up or auto down switch being operated |
- |
| Tester Display |
|---|
| D Door Power Window AUTO Switch |
On the GTS screen, ON or OFF is displayed accordingly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Replace the multiplex network master switch assembly.
Check that the driver door power window moves when the auto up and down functions of the multiplex network master switch assembly are operated.
Driver door auto up and down functions are normal.
| Proceed to |
|---|
| OK |
| NG |
OK
NG