When the ignition switch is ON, the power window regulator motor assembly (for driver door) is operated by the multiplex network master switch assembly. The power window regulator motor assembly (for driver door) has motor, regulator and ECU functions.
Inspect the fuses for circuits related to this system before performing the following procedure.
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.
Operate the multiplex network master switch assembly and check that the power window operates normally.
| Result | Proceed to |
|---|---|
| OK (Operates normally) | A |
| NG (Does not operate only for the driver seat.) | B |
| NG (Does not operate except for the driver seat.) | C |
A
B
C
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Communication D-Door Motor | Connection status between power window regulator motor assembly (for driver door) and main body ECU (multiplex network body ECU) | STOP or OK | STOP: Communication stopped
OK: Normal communication |
- |
| Communication Master Switch | Connection status between multiplex network master switch assembly and main body ECU (multiplex network body ECU) | STOP or OK | STOP: Communication stopped
OK: Normal communication |
- |
| Tester Display |
|---|
| Communication D-Door Motor |
| Communication Master Switch |
OK is displayed for each Data List item above.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check that the power window components of the driver door window are correctly installed (components which may cause the door glass to deviate from the normal fully closed position, such as the door glass runs).
The power window components of the driver door window are correctly installed.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the bolt of the door glass and check that the door glass slides smoothly without being caught when it is moved up and down by hand.
The door glass fits with the glass run without improper contact or deformation.
Foreign matter is not caught in the glass run.
The glass run is not misaligned.
The door belt moulding or door inner glass weatherstrip is not caught.
The glass is not tilted and does not catch.
The door glass slides smoothly without being caught when it is moved up and down by hand.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front door glass sub-assembly (for driver door).
Connect the multiplex network master switch assembly connector.
Turn the ignition switch to ON.
Operate the driver door switch of the multiplex network master switch assembly and check that the front door window regulator with motor assembly (for driver door) operates smoothly.
Operates smoothly without being caught.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front door window regulator with motor assembly (for driver door).
Remove the power window regulator motor assembly (for driver door).
Check that the front door window regulator sub-assembly (for driver door) is not deformed or distorted.
No deformation or distortion.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the L7 multiplex network master switch assembly connector.
Disconnect the L2 power window regulator motor assembly (for driver door) connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| L7-20 (UP) - L2-10 (UP) | Always | Below 1 Ω |
| L7-15 (DOWN) - L2-7 (DOWN) | Always | Below 1 Ω |
| L7-20 (UP) or L2-10 (UP) - Body ground | Always | 10 kΩ or higher |
| L7-15 (DOWN) or L2-7 (DOWN) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Connect the L2 multiplex network master switch assembly connector.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| L2-10 (UP) - Body ground | Ignition switch ON | 11 to 14 V |
| L2-7 (DOWN) - Body ground | Ignition switch ON | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG