DESCRIPTION
When the ignition switch is ON, the front power window regulator motor assembly LH (for LHD) or front power window regulator motor assembly RH (for RHD) is operated by the multiplex network master switch assembly. The front power window regulator motor assembly LH (for LHD) or front power window regulator motor assembly RH (for RHD) has motor, regulator and ECU functions.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
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 Click here.
If the front power window regulator motor assembly LH (for LHD) or front power window regulator motor assembly RH (for RHD) has been replaced with a new one, initialize the power window control system Click here.
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
READ VALUE USING GTS (MAIN BODY)
Read the Data List according to the display on the GTS Click here.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| Communication D-Door Motor | Connection status between front power window regulator motor assembly LH (for LHD) or front power window regulator motor assembly RH (for RHD) and main body ECU (multiplex network body ECU) / OFF or ON | STOP: Communication stopped OK: Normal communication |
- |
| Communication Master SW | Connection status between multiplex network master switch assembly and main body ECU (multiplex network body ECU) | STOP: Communication stopped OK: Normal communication |
- |
| OK |
|---|
| On the GTS screen, OK is displayed. |
| NG |
|
GO TO LIN COMMUNICATION SYSTEM Click here |
| OK |
|
READ VALUE USING GTS (D-DOOR MOTOR)
Read the Data List according to the display on the GTS Click here.
| 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 |
- |
| OK |
|---|
| On the GTS screen, ON or OFF is displayed accordingly. |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| B |
|
CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) Click here |
| C |
|
CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) Click here |
| A |
|
PERFORM ACTIVE TEST USING GTS (D-DOOR MOTOR)
Perform the Active Test according to the display on the GTS Click here.
CAUTION:
Be careful to avoid injuries as this test causes vehicle parts to move. During the Active Test, the jam protection function will not operate.
| Tester Display | Test Part | Control Range | Diagnostic Note |
|---|---|---|---|
| Power Window | Power window | OFF/UP/DOWN | - |
Tech Tips
Up and down movement does not occur if the arrow is not pressed and held
| OK |
|---|
| Driver door power window operates normally. |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| A |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here |
| B |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here |
| C |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here |
CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)
Disconnect the K4 multiplex network master switch assembly connector.
Disconnect the K7 front power window regulator motor assembly LH connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
Replace the multiplex network master switch assembly Click here.
| NEXT |
|
CHECK MANUAL UP / DOWN FUNCTION (FOR DRIVER DOOR)
Check that the driver door power window moves when the manual up and down function of the multiplex network master switch assembly is operated Click here.
| OK |
|---|
| Driver door manual up and down function is normal. |
| OK |
|
END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE) |
| NG |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here |
CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)
Disconnect the J9 multiplex network master switch assembly connector.
Disconnect the J7 front power window regulator motor assembly RH connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
Replace the multiplex network master switch assembly Click here.
| NEXT |
|
CHECK MANUAL UP / DOWN FUNCTION
Check that the driver door power window moves when the manual up and down function of the multiplex network master switch assembly is operated Click here.
| OK |
|---|
| Driver door manual up and down function is normal. |
| OK |
|
END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE) |
| NG |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here |