Pinpoint Test B: All Power Windows are Inoperative

Glass, Frames and Mechanisms

Pinpoint Test B: All Power Windows are Inoperative

Normal Operation

Voltage is supplied to the LH front window control switch from the accessory delay relay. For SuperCab or SuperCrew, the LH front window control switch supplies voltage to the rear window control switches when the lock-out switch is in the UNLOCK position.

This pinpoint test is intended to diagnose the following:

- Fuse

- Circuit breaker

- Accessory delay relay

- Wiring, terminals or connectors

- Window control switch

- BCM (Body Control Module)

PINPOINT TEST B : 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.

B1 CHECK THE VOLTAGE TO THE LH FRONT WINDOW CONTROL SWITCH

- Disconnect: LH Front Window Control Switch C504 (Regular Cab) or C535A (SuperCab or SuperCrew).

- Ignition ON.

- Measure the voltage between LH front window control switch and ground.
- For regular cab, measure the voltage between C504-3, circuit CBP32 (GN/VT), harness side and ground.

- For SuperCab or SuperCrew, measure the voltage between C535B-1, circuit CBP01 (BU), harness side and ground.







Is the voltage greater than 10 volts?

Yes
INSTALL a new LH front window control switch. REFER to Window Control Switch - Front . TEST the system for normal operation.
No
VERIFY Body Control Module (BCM) fuse 32 (15A) (regular cab) or BCM (Body Control Module) circuit breaker 48 (30A) (SuperCab or SuperCrew) is OK. If OK, GO to Pinpoint Test J to diagnose the accessory delay circuit Pinpoint Test J: The Delayed Accessory is Inoperative. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short [1][2]Diagrams By Number. REPAIR the circuit. TEST the system for normal operation.