Pinpoint Test D: A Single Power Window Is Inoperative - LH Rear Window
Glass, Frames and Mechanisms
Pinpoint Tests
Pinpoint Test D: A Single Power Window is Inoperative - LH Rear Window
Refer to Wiring Diagram Set 100 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Power Windows for schematic and connector information. Diagrams By Number
Normal Operation
The LH rear window control switch receives power from the LH front window control switch through circuit CPW14 (VT/WH). The LH rear window control switch provides power to the LH rear window motor through circuit CPW23 (GY) and ground through circuit CPW24 (WH/VT) to operate the LH rear window down; and power through circuit CPW24 (WH/VT) and ground through circuit CPW23 (GY) to operate the LH rear window up.
When operating the LH rear window using the LH front window control switch, power is sent to the LH rear window control switch through circuit CPW15 (YE)/CPW17 (BN/GN) and ground through circuit CPW16 (BU/OG)/CPW18 (GY/VT) to operate the LH rear window down; and power through circuit CPW16 (BU/OG)/CPW18 (GY/VT) and ground through circuit CPW15 (YE)/CPW17 (BN/GN) to operate the LH rear window up.
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 D: A SINGLE POWER WINDOW IS INOPERATIVE - LH REAR WINDOW
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D1 CHECK THE LEFT REAR WINDOW OPERATION FROM THE LH FRONT WINDOW CONTROL SWITCH
- Ignition ON.
- Operate the LH rear window from the LH front window control switch.
- Does the LH rear window operate from the LH front window control switch?
Yes
GO to D2.
No
GO to D3.
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D2 CHECK CIRCUIT CPW14 (VT/WH) FOR VOLTAGE
- Ignition OFF.
- Disconnect: LH Rear Window Control Switch C701.
- Ignition ON.
- 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 Service and Repair. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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D3 CHECK CIRCUITS CPW21 (BN) AND CPW22 (GN/VT) FOR VOLTAGE AND GROUND
- Ignition OFF.
- Disconnect: LH Rear Window Motor C703.
- Ignition ON.
- Measure the voltage between LH rear window motor C703-2, circuit CPW23 (GY), harness side and LH rear window motor C703-1, circuit CPW24 (WH/VT), harness side while operating the LH rear window control switch in the down then up positions.
- Is the voltage greater than 10 volts in both switch directions?
Yes
INSTALL a new window regulator and motor. REFER to Window Regulator - Rear Door Window Regulator - Rear Door. TEST the system for normal operation.
No
GO to D4.
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D4 CHECK THE LH REAR WINDOW CONTROL SWITCH
- Ignition OFF.
- Disconnect: LH Rear Window Control Switch C701.
- Carry out the Window Control Switch component test on the LH rear window control switch.
- Did the LH rear window control switch pass the component test?
Yes
GO to D5.
No
INSTALL a new LH rear window control switch. REFER to Window Control Switch Service and Repair. TEST the system for normal operation.
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D5 CHECK CIRCUITS CPW23 (GY) AND CPW24 (WH/VT) FOR AN OPEN
- Measure the resistance between LH rear window control switch, harness side and LH rear window motor, harness side using the following chart:
- Are the resistances less than 5 ohms?
Yes
GO to D6.
No
REPAIR the circuit. TEST the system for normal operation.
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D6 CHECK CIRCUITS CPW23 (GY) AND CPW24 (WH/VT) FOR A SHORT TO GROUND
- Measure the resistance between LH rear window control switch C701-5, circuit CPW24 (WH/VT), harness side and ground; and between LH rear window control switch C701-2, circuit CPW23 (GY), harness side and ground.
- Are the resistances greater than 10,000?
Yes
GO to D7.
No
REPAIR the circuit(s) in question. TEST the system for normal operation.
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D7 CHECK CIRCUITS CPW15 (YE)/CPW17 (BN/GN) AND CPW16 (BU/OG)/CPW18 (GY/VT) FOR AN OPEN
- Disconnect: LH Front Window Control Switch C504b.
- Measure the resistance between LH front window control switch, harness side and LH rear window control switch, harness side using the following chart:
- Are the resistances less than 5 ohms?
Yes
GO to D8.
No
REPAIR the circuit. TEST the system for normal operation.
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D8 CHECK CIRCUITS CPW17 (BN/GN) AND CPW18 (GY/VT) FOR A SHORT TO GROUND
- Measure the resistance between LH rear window control switch C701-1, circuit CPW17 (BN/GN), harness side and ground; and between LH rear window control switch C701-6, circuit CPW18 (GY/VT), harness side and ground.
- Are the resistances greater than 10,000 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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