Key-Off Operation Function Operates Even If Operating Conditions Are Not Satisfied

WINDSHIELD / WINDOWGLASS: POWER WINDOW CONTROL SYSTEM: Key-off Operation Function Operates even if Operating Conditions are not Satisfied
- Key-off Operation Function Operates even if Operating Conditions are not Satisfied

DESCRIPTION

* When the driver door has not been opened and fully closed, each door power window regulator motor can control its power window operation for approximately 45 seconds after the ignition switch is turned from ON to OFF (the key is removed) by receiving operation permission signals from the main body ECU. However, when approximately 45 seconds have elapsed, or the driver door or front passenger side door is opened within approximately 45 seconds of the ignition switch being turned OFF (the key is removed), the power window regulator motor stops operating.

NOTICE:
* The power window control system uses a multiplex communication system (LIN). 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.
* The power window control system prohibits the AUTO UP / DOWN function when the jam protection function malfunctions. Therefore, troubleshoot the power window control system after confirming that no diagnostic codes are displayed.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When using Techstream to troubleshoot the LIN communication line: Connect Techstream to the vehicle, and turn the courtesy light switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

PROCEDURE

1. READ VALUE USING TECHSTREAM (LIN COMMUNICATION)

(a) Use the Data List to check the function of the power window regulator master switch.

(1) Connect Techstream to the DLC3.

(2) Turn the ignition switch ON and turn the tester on.

(3) Read the indication displayed on the tester.

Main body





OK:

OK is displayed on Techstream screen.

NG -- GO TO ENGINE IMMOBILISER SYSTEM (B2785)
OK -- Continue to next step.

2. CHECK OPERATION FUNCTION AFTER IGNITION SWITCH IS TURNED OFF

(a) Check the power window operation function after the ignition switch is turned off.

Result





B -- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side)
A -- Continue to next step.

3. READ VALUE USING TECHSTREAM (DOOR COURTESY LIGHT SWITCH)

(a) Use the Data List to check the driver side door courtesy switch signal.

(1) Connect Techstream to the DLC3.

(2) Turn the ignition switch ON and turn the tester on.

(3) Read the indication displayed on the tester.

Main body





OK:

OK is displayed on Techstream screen.

OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)
NG -- Continue to next step.

4. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY

(a) Measure the resistance of the switch.





Standard resistance:





NG -- REPLACE DOOR COURTESY LIGHT SWITCH ASSEMBLY
OK -- Continue to next step.

5. CHECK INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)

(a) Measure the voltage without removing the IA, IC junction block connector.





Standard voltage:

for Driver side
for Passenger side










NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)