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Pinpoint Test G: A Single Power Window Is Inoperative - LH Or RH Rear




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Pinpoint Tests

Pinpoint Test G: A Single Power Window is Inoperative - MKZ, LH or RH Rear

Refer to Wiring Diagram Set 100 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), Power Windows for schematic and connector information. Diagrams By Number

Normal Operation

The LH rear window control switch receives delayed accessory power from the LH front window control switch through circuit CPW14 (VT/WH) when the LH front window lockout switch is set to the UNLOCK position, and the accessory delay relay is active. When the LH rear window is operated in the up direction 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 LH rear window is operated in the down direction 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).

The RH rear window control switch receives delayed accessory power from the LH front window control switch through circuit CPW14 (VT/WH) when the LH front window lockout switch is set to the UNLOCK position, and the accessory delay relay is active. When the RH rear window is operated in the up direction 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). When the RH rear window is operated in the down direction 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).

Rear Window Operation From LH Front Switch

When the LH rear power window is operated in the up direction from the LH front window control switch, power is sent to the LH rear window control switch through circuit CPW16 (BU/OG), which transfers power to the LH rear window motor through circuit CPW22 (GN/VT). Ground is provided to the LH rear window switch through circuit CPW15 (YE), which transfers ground to the LH rear window motor through circuit CPW21 (BN).

During LH rear power window down operation from the LH front window control switch, power is sent to the LH rear window control switch through circuit CPW15 (YE), which transfers power to the LH rear window motor through circuit CPW21 (BN). Ground is provided to the LH rear window switch through circuit CPW16 (BU/OG), which transfers ground to the LH rear window motor through circuit CPW22 (GN/VT).

When the RH rear power window is operated in the up direction from the LH front window control switch, power is sent to the RH rear window control switch through circuit CPW18 (GY/VT), which transfers power to the RH rear window motor through circuit CPW24 (WH/VT). Ground is sent to the RH rear window switch through circuit CPW17 (BN/GN), which transfers ground to the RH rear window motor through circuit CPW23 (GY).

During RH rear power window down operation from the LH front window control switch, power is sent to the RH rear window control switch through circuit CPW17 (BN/GN), which transfers power to the RH rear window motor through circuit CPW23 (GY). Ground is sent to the RH rear window switch through circuit CPW18 (GY/VT), which transfers ground to the RH rear window motor through circuit CPW24 (WH/VT).

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



PINPOINT TEST G: A SINGLE POWER WINDOW IS INOPERATIVE - MKZ, LH OR RH 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.

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G1 CHECK THE VOLTAGE TO THE LH REAR OR RH REAR WINDOW CONTROL SWITCH


- Disconnect: Inoperative Rear Window Control Switch C701 (LH) or C819 (RH).
- Ignition ON.
- NOTE: Set the LH front window lockout switch to the UNLOCK position.
- Measure the voltage between the inoperative rear window connector and ground:
- for the RH rear window control switch, measure the voltage between RH rear window control switch C819-3, circuit CPW14 (VT/WH), harness side and ground.
- for the LH rear window control switch, measure the voltage between C701-3, circuit CPW14 (VT/WH), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to G4.

No
GO to G2.

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G2 CHECK THE VOLTAGE TO THE LH FRONT WINDOW CONTROL SWITCH


- Disconnect: LH Front Window Control Switch C535B.
- Measure the voltage between LH front window control switch C535B-3, circuit CBP47 (GN/BU), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to G3.

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 Diagrams By Number. TEST the system for normal operation.

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G3 CHECK FOR OPEN IN CIRCUIT CPW14 (VT/WH)


- Ignition OFF.
- Measure the resistance between the inoperative rear window connector and the LH front window control switch connector.
- for the RH rear window control switch, measure the resistance between RH window control switch C819-3, circuit CPW14 (VT/WH), harness side and LH front window control switch C535B-4, circuit CPW14 (VT/WH), harness side.
- for the LH rear window control switch, measure the resistance between LH window control switch C701-3, circuit CPW14 (VT/WH), harness side and LH front window control switch C535B-4, circuit CPW14 (VT/WH), harness side.




- Is the resistance less than 5 ohms?

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

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

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G4 CHECK THE GROUNDS TO THE INOPERATIVE REAR WINDOW CONTROL SWITCH


- Ignition OFF.
- Measure the resistance between the inoperative window control switch and ground:
- for the RH rear window control switch, measure the resistance between RH rear window control switch C819-1, circuit CPW17 (BN/GN), harness side and ground; and between RH rear window control switch C819-6, circuit CPW18 (GY/VT), harness side and ground.
- for the LH rear window control switch, measure the resistance between LH rear window control switch C701-1, circuit CPW15 (YE), harness side and ground; and between LH rear window control switch C701-6, circuit CPW16 (BU/OG), harness side and ground.




- Are the resistances less than 5 ohms?

Yes
GO to G7.

No
GO to G5.

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G5 CHECK THE CIRCUITS TO THE INOPERATIVE REAR WINDOW CONTROL SWITCH FOR AN OPEN


- Ignition OFF.
- Disconnect: LH Front Window Control Switch C535B.
- For an inoperative LH rear power window, measure the resistance between LH front window control switch C535B-1, circuit CPW15 (YE) and LH rear window control switch C701-1, circuit CPW15 (YE), harness side; and between LH front window control switch C535B-2, circuit CPW16 (BU/OG) and LH rear window control switch C701-6, circuit CPW16 (BU/OG), harness side.




- For an inoperative RH rear power window, measure the resistance between LH front window control switch C535B-7, circuit CPW17 (BN/GN) and RH window control switch C819-1, circuit CPW17 (BN/GN), harness side; and between LH front window control switch C535B-8, circuit CPW18 (GY/VT) and RH rear window control switch C819-6, circuit CPW18 (GY/VT), harness side.




- Are the resistances less than 5 ohms?

Yes
GO to G6.

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

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G6 CHECK THE GROUND TO THE LH FRONT WINDOW CONTROL SWITCH


- Measure the resistance between LH front window control switch C535B-6, circuit GD126 (BK/WH), harness side and ground.




- Is the resistance less than 5 ohms?

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

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

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G7 CHECK THE INOPERATIVE WINDOW CONTROL SWITCH


- Connect: LH Front Window Control Switch C535B.
- Ignition ON.
- For an inoperative LH rear window, connect a fused jumper wire between LH rear window control switch C701-2, circuit CPW21 (BN), harness side and LH rear window control switch C701-3, circuit CPW14 (VT/WH), harness side; and between LH rear window control switch C701-5, circuit CPW22 (GN/VT), harness side and LH rear window control switch C701-6, circuit CPW16 (BU/OG), harness side. 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 C819-2, circuit CPW23 (GY), harness side and RH rear window control switch C819-3, circuit CPW14 (VT/WH), harness side; and between RH rear window control switch C819-5, circuit CPW24 (WH/VT), harness side and RH rear window control switch C819-6, circuit CPW18 (GY/VT), harness side. 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 C701-2, circuit CPW21 (BN), harness side and LH rear window control switch C701-1, circuit CPW15 (YE), harness side; and between LH rear window control switch C701-5, circuit CPW22 (GN/VT), harness side and LH rear window control switch C701-3, circuit CPW14 (VT/WH), harness side. The LH rear window should operate in the upward direction.
- For an inoperative RH rear window, connect a fused jumper wire between RH rear window control switch C819-2, circuit CPW23 (GY), harness side and RH rear window control switch C819-1, circuit CPW17 (BN/GN), harness side; and between RH rear window control switch C819-5, circuit CPW24 (WH/VT), harness side and RH rear window control switch C819-3, circuit CPW14 (VT/WH), harness side. The RH rear window should operate in the upward direction.




- Did the inoperative window operate correctly?

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

No
GO to G8.

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G8 CHECK THE POWER WINDOW MOTOR CIRCUITS


- Ignition OFF.
- Disconnect: Inoperative Rear Window Motor C703 (LH) or C803 (RH).
- For an inoperative LH rear window, measure the resistance between LH rear window control switch C701-5, circuit CPW22 (GN/VT), harness side and LH rear window motor C703-1, circuit CPW22 (GN/VT), harness side.
- For an inoperative RH rear window, measure the resistance between RH rear window control switch C819-5, circuit CPW24 (WH/VT), harness side and RH rear window motor C803-1, circuit CPW24 (WH/VT), harness side.




- For an inoperative LH rear window, measure the resistance between LH rear window control switch C701-2, circuit CPW21 (BN), harness side and LH rear window motor C703-2, circuit CPW21 (BN), harness side.
- For an inoperative RH rear window, measure the resistance between RH rear window control switch C819-2, circuit CPW23 (GY), harness side and RH rear window motor C803-2, circuit CPW23 (GY), harness side.




- Is the resistance less than 5 ohms?

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

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

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