PINPOINT TEST C: DTCs C1699, C1702, C1705 AND C1708 - SENSOR CIRCUIT SHORT TO VBAT

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

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

C1 RETRIEVE THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PARKING AID MODULE SELF-TESTS
- Check the parking aid module DTCs from the continuous and on-demand self-tests.
- Are multiple DTCs recorded?
1. YES : Go to C2 .
2. NO : For DTCs C1699, C1702, C1705 or C1708, go to C3 .
  For all other DTCs, REFER to PARKING AID MODULE DTC CHART .
C2 CHECK THE BUMPER WIRING HARNESS
- Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion.
- Is bumper wiring harness OK?
1. YES : Go to C3.
2. NO : REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. REPEAT the self-test.

C3 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO VOLTAGE

Key in OFF position.
Disconnect: Suspect Parking Aid Sensors C4009, C4010, C4011 and C4012
Disconnect: Parking Aid Module C4014
Key in ON position.

Measure the voltage between the suspect parking aid sensor, harness side and ground as follows:

DTC	Rear Sensor	Connector-Pin	Circuit
C1699	LH outer	C4009-2	VMP15 (YE/GN)
C1702	RH outer	C4011-2	VMP17 (YE/OG)
C1705	LH inner	C4010-2	VMP14 (WH/OG)
C1708	RH inner	C4012-2	VMP16 (YE/GY)

Is any voltage present?

YES : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
NO : Go to C4.

C4 CHECK THE PARKING AID SENSORS
- Install a known good parking aid sensor(s) for each of the suspect parking aid sensor(s).
- Clear the DTCs. Repeat the self-test.
- Test the system for normal operation.
- Is the concern still present?
1. YES : If all of the parking aid sensors recorded DTCs, go to C5 .
  If one or more parking aid sensor(s) recorded DTCs, INSTALL a new sensor(s) for the one in question. REFER to Parking Aid Sensor . CLEAR the DTCs. REPEAT the self-test.
2. NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
C5 CHECK FOR CORRECT PARKING AID MODULE OPERATION
- Disconnect the parking aid module connector.
- Check for:
  - corrosion
  - damaged pins
  - 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?
1. YES : INSTALL a new parking aid module. REFER to Parking Aid Module . TEST the system for normal operation.
2. 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.