Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2005CROWN VICTORIA SPECIAL EDITIONREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEWINDOWS AND GLASSDIAGNOSIS AND TESTINGGLASS, FRAMES AND MECHANISMSPINPOINT TESTSPINPOINT TEST F: THE HEATED REAR WINDOW WILL NOT SHUT OFF AUTOMATICALLY
2005 Ford Crown Victoria Special Edition
Pinpoint Test F: The Heated Rear Window Will Not Shut Off Automatically
2005 Ford Crown Victoria Special EditionSECTION Pinpoint Test F: The Heated Rear Window Will Not Shut Off Automatically
- F1 CHECK THE HEATED REAR WINDOW RELAY INPUT FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: Heated Rear Window Relay.
- Measure the resistance between the heated rear window relay pin 2, circuit 688 (GY/LB), harness side and ground.
- Is the resistance greater than 10,000 ohms?
- F2 CHECK CIRCUIT 688 (GY/LB) FOR A SHORT TO GROUND
- Disconnect: Lighting Control Module (LCM) C2145b.
- Measure the resistance between the heated rear window relay connector pin 2, circuit 688 (GY/LB), harness side and ground.
- Is the resistance greater than 10,000 ohms?
- Yes : INSTALL a new LCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
- No : REPAIR the circuit. TEST the system for normal operation.
- F3 CHECK CIRCUIT 186 (BN/LB) FOR A SHORT TO VOLTAGE
- Key in ON position.
- Measure the voltage between the heated rear window relay pin 5, circuit 186 (BN/LB), harness side and ground.
- Is voltage present?
- Yes : REPAIR the circuit. TEST the system for normal operation.
- No : INSTALL a new heated rear window relay. TEST the system for normal operation.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.