Pinpoint Test F: A Single Power Window is Inoperative - LH Rear

Glass, Frames and Mechanisms

Pinpoint Test F: A Single Power Window is Inoperative - LH Rear

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

Normal Operation

The LH rear window control switch receives high current power through circuit CBP47 (GN/BU) whenever the accessory delay relay is active. The LH rear window control switch receives low current power through circuit CPW14 (VT/WH) whenever the window lock switch on the LH front window control switch is set to the UNLOCK position and the accessory delay relay is active. Ground is provided to the LH rear window control switch through circuit GD133 (BK). When operating the LH rear window in the up direction, the LH rear window control switch supplies power to the LH rear window motor through circuit CPW22 (GN/VT) and ground through circuit CPW21 (BN).

When operating the LH rear window in the down direction, the LH rear window control switch provides power to the RH front window motor through circuit CPW21 (BN) and ground through circuit CPW22 (GN/VT).

LH Rear Window Operation From LH Front Switch

When the LH rear power window is operated in the down direction from the LH front window control switch, a low current voltage is sent to the LH rear window control switch through circuit CPW15 (YE). The LH rear window control switch integral electronics then supply high current power to the LH rear window motor through CPW21 (BN). Ground is provided to the LH rear window motor from the LH rear window control switch through circuit CPW22 (GN/VT).

When the LH rear power window is operated in the up direction from the LH front window control switch, a low current voltage is sent to the LH rear window control switch through circuit CPW16 (BU/OG). The LH rear window control switch integral electronics then supply high current power to the LH rear window motor through circuit CPW22 (GN/VT). Ground is provided to the LH rear window motor from the LH rear window control switch through circuit CPW21 (BN).

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- LH front window control switch

- LH rear window control switch

- LH rear window motor

PINPOINT TEST F : A SINGLE POWER WINDOW IS INOPERATIVE - LH REAR

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.

F1 CHECK THE LH REAR POWER WINDOW OPERATION FROM LH FRONT CONTROL SWITCH

- Ignition ON.

- Attempt to operate the LH rear window from the LH front window control switch.

Does the LH rear window operate when using the LH front window control switch?

Yes
GO to F2.

No
GO to F4.

F2 CHECK CIRCUIT CPW14 (VT/WH) FOR VOLTAGE

- Disconnect: LH Rear Window Control Switch C701.

- Ignition ON.

- NOTE: Make sure the LH window control switch lockout switch is in the UNLOCK position.
Measure the voltage between LH rear window control switch C701-3, circuit CPW14 (VT/WH), harness side and ground.






Is the voltage greater than 10 volts?

Yes
INSTALL a new LH rear window control switch. REFER to Window Control Switch . TEST the system for normal operation.

No
GO to F3.

F3 CHECK THE LH FRONT WINDOW CONTROL SWITCH

- Ignition OFF.

- Disconnect: LH Front Window Control Switch C504.

- Carry out the LH front window control switch component test.

Did the LH front window control switch pass the component test?

Yes
REPAIR open in circuit CPW14 (VT/WH). TEST the system for normal operation.

No
INSTALL a new LH front window control switch. REFER to Window Control Switch . TEST the system for normal operation.

F4 CHECK THE LH REAR POWER WINDOW OPERATION FROM LH REAR CONTROL SWITCH

- Ignition ON.

- Attempt to operate the LH rear window from the LH rear window control switch.

Does the LH rear window operate when using the LH rear window control switch?

Yes
GO to F5.

No
GO to F6.

F5 CHECK CIRCUITS CPW16 (BU/OG) AND CPW15 (YE) FOR AN OPEN

- Measure the resistance between LH rear window control switch C701-1, circuit CPW16 (BU/OG), harness side and LH front window control switch C504-6, circuit CPW16 (BU/OG), harness side.





- Measure the resistance between LH rear window control switch C701-4, circuit CPW15 (YE), harness side and LH front window control switch C504-14, circuit CPW15 (YE), harness side.





Are the resistances less than 5 ohms?

Yes
INSTALL a new LH front window control switch. REFER to Window Control Switch . TEST the system for normal operation.

No
REPAIR the circuit(s). TEST the system for normal operation.

F6 CHECK THE HIGH CURRENT POWER TO THE LH REAR WINDOW CONTROL SWITCH

- Ignition OFF.

- Disconnect: LH Rear Window Control Switch C701.

- Ignition ON.

- Measure the voltage between LH rear window control switch C701-5, circuit CBP47 (GN/BU), harness side and ground.





Is the voltage greater than 10 volts?

Yes
GO to F7.

No
VERIFY Smart Junction Box (SJB) circuit breaker 47 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.

If not OK, Refer to the Wiring Diagrams to identify the possible causes of the circuit short. REPAIR the circuit. TEST the system for normal operation. Diagrams By Number

F7 CHECK THE GROUND TO THE LH REAR WINDOW CONTROL SWITCH

- Ignition OFF.

- Measure the resistance between LH rear window control switch C701-8, circuit GD133 (BK), harness side and ground.





Is the resistance less than 5 ohms?

Yes
GO to F8.

No
REPAIR the circuit. TEST the system for normal operation.

F8 CHECK THE LH REAR WINDOW CONTROL SWITCH

- Carry out the LH rear window control switch component test.

Did the LH rear window control switch pass the component test?

Yes
GO to F9.

No
INSTALL a new LH rear window control switch. REFER to Window Control Switch . TEST the system for normal operation.

F9 CHECK CIRCUITS CPW21 (BN) AND CPW22 (GN/VT) FOR AN OPEN

- Disconnect: LH Rear Window Motor C703.

- Measure the resistance between LH rear window control switch C701-6, circuit CPW22 (GN/VT), harness side and LH rear window motor C703-2, circuit CPW22 (GN/VT), harness side.





- Measure the resistance between LH rear window control switch C701-7, circuit CPW21 (BN), harness side and LH rear window motor C703-1, circuit CPW21 (BN), harness side.





Are both resistances less than 5 ohms?

Yes
INSTALL a new LH rear window motor. REFER to Window Regulator Motor - Rear Door . TEST the system for normal operation.

No
REPAIR the circuit(s). TEST the system for normal operation.