PINPOINT TEST B: DTCs C1700, C1703 AND C1706

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

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

B1 RETRIEVE THE DTCs FROM THE PAM SELF-TEST
- Check the PAM DTCs from the continuous and on-demand self-tests.
- Are multiple DTCs recorded?
1. Yes : GO to B2.
2. No : For DTC C1700, C1703 or C1706 GO to B3.
  For all other DTCs, REFER to DTC CHARTS in this service information.
B2 CHECK THE BUMPER WIRING HARNESS
- Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion.
- Is the bumper wiring harness OK?
1. Yes : GO to B3.
2. No : REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. TEST the system for normal operation.

B3 CHECK THE SENSOR CIRCUITRY FOR OPENS

Ignition OFF.
Disconnect: Suspect Parking Aid Sensor C4009, C4011 or C4228.
Disconnect: PAM C4014.

Measure the resistance between the PAM C4014, harness side and the suspect parking aid sensor, harness side as follows:

TERMINAL RESISTANCE REFERENCE TABLE

DTC	Rear Sensor	PAM Connector-Pin	Sensor Connector- Pin	Circuit
C1700	LH outer	C4014-9	C4009-1	LMP07 (BU/WH)
C1700	LH outer	C4014-15	C4009-2	VMP15 (YE/GN)
C1700	LH outer	C4014-12	C4009-3	RMP07 (GN/WH)
C1703	RH outer	C4014-9	C4011-1	LMP07 (BU/WH)
C1703	RH outer	C4014-16	C4011-2	VMP17 (YE/OG)
C1703	RH outer	C4014-12	C4011-3	RMP07 (GN/WH)
C1706	Center	C4014-9	C4228-1	LMP07 (BU/WH)
C1706	Center	C4014-14	C4228-2	VMP14 (WH/OG)
C1706	Center	C4014-12	C4228-3	RMP07 (GN/WH)

Fig 1: Measuring Resistance Between PAM C4014, Harness Side And Suspect Parking Aid Sensor

Courtesy of FORD MOTOR CO.

Are the resistances less than 5 ohms?

Yes : GO to B4.
No : REPAIR the circuit in question. CLEAR the DTCs.
TEST the system for normal operation.

B4 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO GROUND

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

TERMINAL RESISTANCE REFERENCE TABLE

DTC	Rear Sensor	Connector-Pin	Circuit
C1700	LH outer	C4009-2	VMP15 (YE/GN)
C1703	RH outer	C4011-2	VMP17 (YE/OG)
C1706	Center	C4228-2	VMP14 (WH/OG)

Fig 2: Measuring Resistance Between Suspect Parking Aid Sensor, Harness Side And Ground

Courtesy of FORD MOTOR CO.

Is the resistance greater than 10,000 ohms?

Yes : If all of the parking aid sensors recorded DTCs, GO to B5.
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 in this service information. CLEAR the DTCs. TEST the system for normal operation.
No : REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.

B5 CHECK FOR CORRECT PAM OPERATION
- Disconnect the PAM connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the PAM 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 PAM. REFER to PARKING AID MODULE (PAM) in this service information. 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.