Pinpoint Test A: All Power Windows Are Inoperative

Glass, Frames and Mechanisms

Pinpoint Test A: All Power Windows are Inoperative

Refer to Wiring Diagram Set 100, Power Windows for schematic and connector information Electrical Diagrams.

Normal Operation

There are two high current voltage circuits to the master window control switch. One of these circuits provides voltage for front window operation, the other provides voltage for rear window operation. The master window control switch supplies ground for all window motor operation.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Window control switch

PINPOINT TEST A : ALL POWER WINDOWS ARE INOPERATIVE

NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

A1 CHECK ALL WINDOW OPERATION FROM THE MASTER WINDOW CONTROL SWITCH

NOTE: Make sure the window lock-out switch is in the UNLOCK position.

- Ignition ON.

- Attempt to operate each window from the master window control switch.

Do any of the windows operate from the master window control switch?

Yes
GO to Symptom Chart to diagnose the inoperative window(s) Symptom Related Diagnostic Procedures.

No
GO to A2.

A2 CHECK THE MASTER WINDOW CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

- Ignition OFF.

- Disconnect: Master Window Control Switch C504A.

- Measure the resistance between master window control switch C504A-2, circuit GD143 (BK/VT), harness side and ground.





Is the resistance less than 5 ohms?

Yes
INSTALL a new master window control switch. REFER to Window Control Switch Service and Repair. TEST the system for normal operation.

No
REPAIR the circuit. CARRY OUT the window motor initialization procedure. REFER to Window Motor Initialization Programming and Relearning. TEST the system for normal operation.