Pinpoint Test H: DTC C1920 And B2373 Led No. 1 Circuit Failure

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

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

H1 CHECK CIRCUIT 1436 (VT/OG) FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: Parking Aid Switch C2114.
- Disconnect: Parking Aid Module C3267.
- Measure the resistance between the parking aid module C3267-5, circuit 1436 (VT/OG), harness side and ground.
Fig 1: Measuring Resistance Between Parking Aid Module C3267-5, Circuit 1436 (VT/OG), Harness Side & Ground
Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
Yes: GO to H2.

No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
H2 CHECK CIRCUIT 1436 (VT/OG) FOR AN OPEN
- Measure the resistance between the parking aid module C3267-5, circuit 1436 (VT/OG), harness side and the parking aid switch C2114-9, circuit 1436 (VT/OG), harness side.
Fig 2: Measuring Resistance Between Parking Aid Module C3267-5, Circuit 1436 (VT/OG), Harness Side & Parking Aid Switch C2114-9, Circuit 1436 (VT/OG) & Harness Side
Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes: GO to H3.

No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
H3 CHECK CIRCUIT 1436 (VT/OG) FOR A SHORT TO VOLTAGE
- Key in ON position.
- Measure the voltage between the parking aid module C3267-5, circuit 1436 (VT/OG), harness side and ground.
Fig 3: Measuring Voltage Between Parking Aid Module C3267-5, Circuit 1436 (VT/OG), Harness Side & Ground
Courtesy of FORD MOTOR CO.
- Is any voltage present?
Yes: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

No: GO to H4.
H4 CHECK THE PARKING AID SWITCH
- Install a known good traction assist/parking aid switch.
- Test the system for normal operation.
- Is the concern still present?
Yes: GO to H5.

No: INSTALL a new parking aid switch. REFER to PARKING AID SWITCH . CLEAR the DTCs. REPEAT the self-test.
H5 CHECK FOR CORRECT PARKING AID MODULE OPERATION
- Disconnect the parking aid module connector.
- Check for:
- corrosion
- pushed-out pins
- Connect the parking aid module connector and make sure it seats correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
Yes: INSTALL a new parking aid module. REFER to PARKING AID MODULE . TEST the system for normal operation.

No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.