Remote Up / Down Function Does Not Operate

WINDSHIELD / WINDOWGLASS: POWER WINDOW CONTROL SYSTEM: Remote Up / Down Function does not Operate
- Remote Up / Down Function does not Operate

DESCRIPTION

When the ignition switch is ON and the window lock switch is set to UNLOCK, the power window regulator master switch sends remote signals to the multiplex network door ECU front LH (driver door ECU), and the remote signals are then passed to the multiplex network door ECU front RH (passenger door ECU). The multiplex network door ECU front RH then activates the appropriate power window regulator motor.

WIRING DIAGRAM





INSEPCTION PROCEDURE

PROCEDURE

1. CHECK MANUAL UP / DOWN FUNCTION

(a) Check that the manual UP / DOWN function using the master switch and regulator switch can operate all the power windows.

OK:

Manual UP / DOWN function operates normally.

NG -- OTHER PROBLEM
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (PASSENGER SWITCH ON MASTER SWITCH)

(a) Check the Data List for proper functioning of the power window switch on the master switch.

Multiplex network door ECU front LH





OK:

ON (power window regulator switch on master switch operates) appears on screen.

OK -- REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH
NG -- Continue to next step.

3. CHECK WIRE HARNESS (MASTER SWITCH - DOOR ECU FRONT LH)





(a) Disconnect the P14 switch connector.

(b) Disconnect the D21 ECU connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

4. CHECK WIRE HARNESS (DOOR ECU FRONT LH - DOOR ECU FRONT RH)





(a) Disconnect the D21 and P41 ECU connectors.

(b) Measure the resistance of the wire harness side connectors.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.

5. REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

(a) Temporarily replace the power window regulator master switch with a new or normally functioning one.

(b) Check that the remote UP / DOWN function operates normally.

OK:

Remote UP / DOWN function operates normally.

OK -- END
NG -- Continue to next step.

6. REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH

(a) Temporarily replace the multiplex network door ECU front LH with a new or normally functioning one.

(b) Check that the remote UP / DOWN function operates normally.

OK:

Remote UP / DOWN function operates normally.

NG -- REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH

OK -- END