DESCRIPTION
If the auto up/down function does not operate, the cause may be one or more of the following:
The ECU in the power window regulator motor determines that the power window regulator motor has not been initialized.
The master switch has a malfunction.
The Hall IC in the front power window regulator motor has a malfunction.
INSPECTION PROCEDURE
Note
If the power window regulator motor assembly has been replaced with a new one, initialize the power window control system Click here.
If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system Click here.
PROCEDURE
READ VALUE USING GTS (D DOOR P/W AUTO SW)
Use the Data List to check if the multiplex network master switch is functioning properly Click here.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| D Door P/W Auto SW | Driver side power window auto up/down signal / ON or OFF | ON: Driver side power window auto up/down switch on power window regulator master switch operated OFF: Driver side power window switch on power window regulator master switch not operated |
- |
| OK |
|---|
| On GTS screen, item changes between ON and OFF according to above chart. |
| NG |
|
REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here |
| OK |
|
READ VALUE USING GTS (D DOOR P/W AUTO SW)
Use the Data List to check if the multiplex network master switch is functioning properly Click here.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| D Door P/W Auto SW | Driver side power window auto up/down signal / ON or OFF | ON: Driver side power window auto up/down switch operated OFF: Driver side power window switch not operated |
- |
| OK |
|---|
| On GTS screen, item changes between ON and OFF according to above chart. |
| NG |
|
CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here |
| OK |
|
PERFORM INITIALIZATION
Initialize the power window regulator motor assembly Click here.
Check that the driver side door power window moves when the auto up and down functions of the multiplex network master switch assembly are operated Click here.
| OK |
|---|
| Driver side auto up and down functions are normal. |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| B |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here |
| C |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here |
| A |
|
END (POWER WINDOW CONTROL SYSTEM HAS NOT BEEN INITIALIZED)
CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
Temporarily replace the multiplex network master switch assembly with a new or normally functioning one Click here.
Check that the driver side door power window moves when the auto up and down functions of the multiplex network master switch assembly are operated Click here.
| OK |
|---|
| Driver side auto up and down functions are normal. |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| B |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here |
| C |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here |
| A |
|
END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)