Pinpoint Test B: A Single Power Window Is Inoperative - RF
Glass, Frames and Mechanisms
Pinpoint Tests
Pinpoint Test B: A Single Power Window is Inoperative - RF, Expedition
Refer to Wiring Diagram Set 100, Power Windows for schematic and connector information. Diagrams By Number
Normal Operation
Under normal operation, the RF window control switch receives power from the master window control switch through circuit CPW30 (GY/YE). The RF window control switch provides power to the power window motor through circuit CPW20 (WH/OG) and ground through circuit CPW19 (VT) to operate the passenger front window up, and power through circuit CPW19 (VT) and ground through circuit CPW20 (WH/OG) to operate the passenger front window down.
When operating the passenger front window using the master window control switch, power is sent to the RF window control switch through circuit CPW12 (GN/OG) and ground through circuit CPW13 (BN/YE) to operate the passenger front window up, and power through circuit CPW13 (BN/YE) and ground through circuit CPW12 (GN/OG) to operate the passenger front window down.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Window control switch
- Front door window regulator motor
PINPOINT TEST B: A SINGLE POWER WINDOW IS INOPERATIVE - RF, EXPEDITION
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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B1 CHECK THE VOLTAGE TO THE PASSENGER WINDOW REGULATOR CONTROL SWITCH
- Disconnect: RF Window Control Switch C624.
- Ignition ON.
- NOTE: Set the window lock switch to the UNLOCK position.
- Measure the voltage between RF window control switch C624-3, circuit CPW30 (GY/YE), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to B2.
No
REPAIR circuit CPW30 (GY/YE) for an open. TEST the system for normal operation.
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B2 CHECK CIRCUITS CPW13 (BN/YE) AND CPW12 (GN/OG) FOR CONTINUITY TO GROUND
- Ignition OFF.
- Measure the resistance between ground and RF window control switch C624-1, circuit CPW13 (BN/YE), harness side and ground; and between C624-6, circuit CPW12 (GN/OG), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to B4.
No
GO to B3.
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B3 CHECK CIRCUITS CPW13 (BN/YE) AND CPW12 (GN/OG) FOR AN OPEN
- Disconnect: Master Window Control Switch C504A.
- Measure the resistance between master window control switch C504A-4, circuit CPW13 (BN/YE), harness side and RF window control switch C624-1, circuit CPW13 (BN/YE), harness side.
- Measure the resistance between master window control switch C504A-8, circuit CPW12 (GN/OG), harness side and RF window control switch C624-6, circuit CPW12 (GN/OG), harness side.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new master window control switch. REFER to Window Control Switch Service and Repair. TEST the system for normal operation.
No
REPAIR circuit CPW13 (BN/YE) or CPW12 (GN/OG) for an open. TEST the system for normal operation.
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B4 CHECK THE RF POWER WINDOW SWITCH
- Ignition ON.
- Connect a fused jumper wire between C624-1, circuit CPW13 (BN/YE), harness side and C624-2, circuit CPW19 (VT), harness side; and a second fused jumper wire between C624-3, circuit CPW30 (GY/YE), harness side and C624-5, circuit CPW20 (WH/OG), harness side. The window should operate in the upward direction.
- Connect a fused jumper wire between C624-6, circuit CPW12 (GN/OG), harness side and C624-5, circuit CPW20 (WH/OG), harness side; and a second fused jumper wire between C624-3, circuit CPW30 (GY/YE), harness side and C624-2, circuit CPW19 (VT), harness side. The window should operate in the downward direction.
- Does the window operate correctly?
Yes
INSTALL a new RF window regulator control switch. REFER to Window Control Switch Service and Repair. TEST the system for normal operation.
No
GO to B5.
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B5 CHECK CIRCUITS CPW19 (VT) AND CPW20 (WH/OG) FOR AN OPEN
- Ignition OFF.
- Disconnect: RF Window Motor C608.
- Measure the resistance between RF window control switch C624-2, circuit CPW19 (VT), harness side, and RF window motor C608-1, circuit CPW19 (VT), harness side.
- Measure the resistance between RF window control switch C624-5, circuit CPW20 (WH/OG), harness side and RF window motor C608-2, circuit CPW20 (WH/OG), harness side.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new RF window regulator motor. REFER to Window Regulator Motor - Front Door Window Regulator Motor - Front Door. TEST the system for normal operation.
No
REPAIR circuit CPW19 (VT) or CPW20 (WH/OG) for an open. TEST the system for normal operation.
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