Lexus NX: Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch
DESCRIPTION
If the manual up and down function operates normally but the auto up and down function does not, then fail-safe mode may be functioning.
If power window initialization has not been performed, the auto up and down function will not operate.
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
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.
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If the front power window regulator motor assembly LH has been replaced with a new one, initialize the power window control system.
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Check that the "D Window Auto Up" and "D Window Auto Down" power window control system customize settings are "ON" before proceeding with work.
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- After the catch protection function operates, the auto operation is not performed the first time auto up is performed. All auto up operations performed after the first operate normally
HINT:
If the pulse sensor built into the front power window regulator motor assembly LH is malfunctioning, the power window control system enters 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.
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PROCEDURE
| 1. | READ VALUE USING TECHSTREAM (MASTER SWITCH) |
(a) Read the Data List according to the display on the Techstream.
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| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| D Door P/W Auto SW | Driver door power window auto switch signal | OFF or ON | OFF: Driver door power window auto switch not being operated ON: Driver door power window auto switch being operated | - |
| Tester Display |
|---|
| D Door P/W Auto SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| NG | .gif) | REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY |
|
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| 2. | READ VALUE USING TECHSTREAM (D-DOOR MOTOR) |
(a) Read the Data List according to the display on the Techstream.
Click here
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| D Door P/W Auto SW | Driver door power window auto switch signal | OFF or ON | OFF: Driver door power window auto switch not being operated ON: Driver door power window auto switch being operated | - |
| Tester Display |
|---|
| D Door P/W Auto SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| NG | | GO TO STEP 5 |
|
| 3. | PERFORM INITIALIZATION (FOR DRIVER DOOR) |
(a) Initialize the front power window regulator motor assembly LH.
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|
| 4. | CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP / DOWN FUNCTION) |
(a) Check that the driver door power window moves when the auto up and down function of the multiplex network master switch assembly is operated.
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OK:
Driver door auto up and down function is normal.
| OK | | END (PROBLEM DUE TO INITIALIZATION FAILURE) |
| NG | | REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH |
| 5. | REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY |
(a) Replace the multiplex network master switch assembly.
Click here
|
| 6. | CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP / DOWN FUNCTION) |
(a) Check that the driver door power window moves when the auto up and down function of the multiplex network master switch assembly is operated.
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OK:
Driver door auto up and down function is normal.
| OK | | END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE) |
| NG | | REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH |
READ NEXT:
Front Passenger Side Power Window Auto Up / Down Function does not Operate with Front Passenger Side Power Window Switch
DESCRIPTION If the manual up and down function operates normally but the auto up and down function does not, then fail-safe mode may be functioning. If power window initialization has not been perform
Rear Power Window LH Auto Up / Down Function does not Operate with Rear Power Window Switch LH
DESCRIPTION If the manual up and down function operates normally but the auto up and down function does not, then fail-safe mode may be functioning. If power window initialization has not been perform
Rear Power Window RH Auto Up / Down Function does not Operate with Rear Power Window Switch RH
DESCRIPTION If the manual up and down function operates normally but the auto up and down function does not, then fail-safe mode may be functioning. If power window initialization has not been perform
SEE MORE:
Removal
REMOVAL PROCEDURE 1. PRECAUTION Click here 2. REMOVE REAR BUMPER COVER Click here 3. REMOVE NO. 2 LUGGAGE ROOM WIRE Click here 4. REMOVE REAR CORNER ULTRASONIC SENSOR (a) Detach the 2 claws and remove the rear corner ultrasonic sensor. HINT:
When reusing the sensor, make sure that each s
Removal
REMOVAL PROCEDURE 1. REMOVE CONSOLE BOX ASSEMBLY Click here 2. REMOVE DOOR SCUFF PLATE ASSEMBLY LH Click here 3. REMOVE COWL SIDE TRIM BOARD LH Click here 4. DISCONNECT FRONT FLOOR CARPET ASSEMBLY (a) Using a clip remover, remove the clip. *1 Hook *2 Fastener
