When the ignition switch is ON, the front power window regulator motor assembly LH is operated by the multiplex network master switch assembly. The front power window regulator motor assembly LH has motor, regulator and ECU functions.
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.
If the front power window regulator motor assembly LH has been replaced with a new one, initialize the power window control system.
Inspect the fuses for circuits related to this system before performing the following procedure.
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| D Door P/W Up SW | Driver door power window manual up switch signal | OFF or ON | OFF: Driver door power window manual up switch not being operated
ON: Driver door power window manual up switch being operated |
- |
| D Door P/W Down SW | Driver door power window manual down switch signal | OFF or ON | OFF: Driver door power window manual down switch not being operated
ON: Driver door power window manual down switch being operated |
- |
| Tester Display |
|---|
| D Door P/W Up SW |
| D Door P/W Down SW |
On the GTS screen, ON or OFF is displayed accordingly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Front view of wire harness connector
(to Front Power Window Regulator Motor Assembly LH) |
Disconnect the J6 front power window regulator motor assembly LH connector.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J6-10 (UP) - J6-1 (GND) | ·
Ignition switch turned to ON ·
Multiplex network master switch assembly (driver side switch) OFF → UP (manual operation) |
11 to 14 V → Below 1 V |
| J6-7 (DOWN) - J6-1 (GND) | ·
Ignition switch turned to ON ·
Multiplex network master switch assembly (driver side switch) OFF → DOWN (manual operation) |
11 to 14 V → Below 1 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the J2 multiplex network master switch assembly connector.
Disconnect the J6 front power window regulator motor assembly LH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J2-20 (UP) - J6-10 (UP) | Always | Below 1 Ω |
| J2-15 (DOWN) - J6-7 (DOWN) | Always | Below 1 Ω |
| J2-20 (UP) or J6-10 (UP) - Body ground | Always | 10 kΩ or higher |
| J2-15 (DOWN) or J6-7 (DOWN) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG