Pinpoint Test E: A Single Power Window is Inoperative - LH Or RH Rear

Glass, Frames and Mechanisms

Pinpoint Tests

Pinpoint Test E: A Single Power Window is Inoperative - LH or RH Rear

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

Normal Operation

Under normal operation, the rear window control switches receive power from the LH front window control switch through circuit CPW14 (VT/WH) when the lock out feature is not active.

Rear Window Operation From the LH Front Window Control Switch

When the LH rear window is operated up from the LH front window control switch, power is sent to the LH rear window control switch through circuit CPW15 (YE) and ground through circuit CPW16 (BU/OG). The LH rear window control switch transfers power to the LH rear window motor through circuit CPW21 (BN) and ground through circuit CPW22 (GN/VT). When the RH rear window is operated down from the LH front window control switch, power is sent to the RH rear window control switch through circuit CPW17 (BN/GN) and ground through circuit CPW18 (GY/VT). The RH rear window control switch transfers power to the RH rear window motor through circuit CPW23 (GY) and ground through circuit CPW24 (WH/VT).

When the LH rear window is operated up from the LH front window control switch, power is sent to the LH rear window control switch through circuit CPW16 (BU/OG) and ground through circuit CPW15 (YE). The LH rear window control switch transfers power to the LH rear window motor through circuit CPW22 (GN/VT) and ground through circuit CPW21 (BN). When the RH rear window is operated up from the LH front window control switch, power is sent to the RH rear window control switch through circuit CPW18 (GY/VT) and ground through circuit CPW17 (BN/GN). The RH rear window control switch transfers power to the RH rear window motor through circuit CPW24 (WH/VT) and ground through circuit CPW23 (GY).

Rear Window Operation From the LH or RH Rear Window Control Switch

When the LH rear window is operated down from the LH rear window control switch, power is sent to the LH rear window motor through circuit CPW21 (BN) and ground through circuit CPW22 (GN/VT). When the RH rear window is operated down from the RH rear window control switch, power is sent to the RH rear window motor through circuit CPW23 (GY) and ground through circuit CPW24 (WH/VT).

When the LH rear window is operated up from the LH rear window control switch, power is sent to the LH rear window motor through circuit CPW22 (GN/VT) and ground through circuit CPW21 (BN). When the RH rear window is operated up from the RH rear window control switch, power is sent to the RH rear window motor through circuit CPW24 (WH/VT) and ground through circuit CPW23 (GY).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- LH front window control switch
- Rear door window motor
- LH or RH rear window control switch

PINPOINT TEST E: A SINGLE POWER WINDOW IS INOPERATIVE - LH OR RH REAR

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

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E1 CHECK THE VOLTAGE TO THE LR OR RR WINDOW CONTROL SWITCH

- Disconnect: Inoperative Rear Window Control Switch C701 (LH) or C801 (RH).
- Ignition ON.
- NOTE: Set the window lock switch to the UNLOCK position.
- For an inoperative LH rear window, measure the voltage between LH rear window control switch C701-3, circuit CPW14 (VT/WH), harness side and ground.

- NOTE: Set the window lock switch to the UNLOCK position.
- For an inoperative RH rear window, measure the voltage between RH rear window control switch C801-3, circuit CPW14 (VT/WH), harness side and ground.

- Is the voltage greater than 10 volts?

Yes
GO to E2.

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

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E2 CHECK THE GROUNDS TO THE INOPERATIVE REAR WINDOW CONTROL SWITCH

- Ignition OFF.
- For an inoperative LH rear window, measure the resistance between LH rear window control switch C701-6, circuit CPW16 (BU/OG), harness side and ground; and between LH rear window control switch C701-1, circuit CPW15 (YE), harness side and ground.

- For an inoperative RH rear window, measure the resistance between RH rear window control switch C801-6, circuit CPW18 (GY/VT), harness side and ground; and between RH rear window control switch C801-1, circuit CPW17 (BN/GN), harness side and ground.

- Are the resistances less than 5 ohms?

Yes
GO to E3.

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

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E3 CHECK THE CIRCUITS TO THE INOPERATIVE REAR WINDOW CONTROL SWITCH FOR AN OPEN

- Ignition OFF.
- Disconnect: LH Front Window Control Switch C504B.
- For an inoperative LH rear window, measure the resistance between LH front window control switch C504B, harness side and LH rear window control switch C701, harness side using the following chart:

- For an inoperative RH rear window, measure the resistance between LH front window control switch C504B, harness side and RH rear window control switch C801, harness side using the following chart:

- Are the resistances less than 5 ohms?

Yes
GO to E4.

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

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E4 CHECK THE INOPERATIVE WINDOW CONTROL SWITCH

- Ignition ON.
- For an inoperative RH rear window, connect a fused jumper wire between RH rear window control switch C801-1, circuit CPW17 (BN/GN) and RH rear window control switch C801-5, circuit CPW24 (WH/VT); and between RH rear window control switch C801-3, circuit CPW14 (VT/WH) and RH rear window control switch C801-2, circuit CPW23 (GY). The RH rear window should operate in the downward direction.

- For an inoperative LH rear window, connect a fused jumper wire between LH rear window control switch C701-1, circuit CPW15 (YE) and LH rear window control switch C701-5, circuit CPW22 (GN/VT); and between LH rear window control switch C701-3, circuit CPW14 (VT/WH) and LH rear window control switch C701-2, circuit CPW21 (BN). The LH rear window should operate in the downward direction.

- For an inoperative RH rear window, connect a fused jumper wire between RH rear window control switch C801-6, circuit CPW18 (GY/VT) and RH rear window control switch C801-2, circuit CPW23 (GY); and between RH rear window control switch C801-3, circuit CPW14 (VT/WH) and RH rear window control switch C801-5, circuit CPW24 (WH/VT). The RH rear window should operate in the upward direction.

- For an inoperative LH rear window, connect a fused jumper wire between LH rear window control switch C701-6, circuit CPW16 (BU/OG) and LH rear window control switch C701-2, circuit CPW21 (BN); and between LH rear window control switch C701-3, circuit CPW14 (VT/WH) and LH rear window control switch C701-5, circuit CPW22 (GN/VT). The LH rear window should operate in the upward direction.

- Does the window operate correctly?

Yes
If the rear window did not operate with the rear window control switch, INSTALL a new rear window control switch. If the rear window operated with the rear window control switch but not with the LH front window control switch, INSTALL a new LH front window control switch. REFER to Window Control Switch Service and Repair. TEST the system for normal operation.

No
GO to E5.

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E5 CHECK THE POWER WINDOW MOTOR CIRCUITS

- Ignition OFF.
- Disconnect: Inoperative Rear Window Motor C703 (LH) or C803 (RH).
- For an inoperative LH rear window motor, measure the resistance between LH rear window control switch C701-5, circuit CPW22 (GN/VT) and LH rear window motor C703-2, circuit CPW22 (GN/VT), harness side.
- For an inoperative RH rear window motor, measure the resistance between RH rear window control switch C801-5, circuit CPW24 (WH/VT) and RH rear window motor C803-2, circuit CPW24 (WH/VT), harness side.

- For an inoperative LH rear window motor, measure the resistance between LH rear window control switch C701-2, circuit CPW21 (BN) and LH rear window motor C703-1, circuit CPW21 (BN), harness side.
- For an inoperative RH rear window motor, measure the resistance between RH rear window control switch C801-2, circuit CPW23 (GY) and RH rear window motor C803-1, circuit CPW23 (GY), harness side.

- Are the resistances less than 5 ohms?

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

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

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