PINPOINT TEST F: DTCs B1B52:12 AND B1B52:14

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. 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.

F1 CHECK THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND SELF-TESTS
- Check the recorded PAM DTCs from the continuous and on-demand self-tests.
- Are parking aid DTCs other than B1B52:12 or B1B52:14 present?
- Yes: DIAGNOSE other DTCs first. REFER to DTC CHARTS .
- No: GO to F2 .
F2 MEASURE THE PARKING AID SPEAKER RESISTANCE
- Disconnect: Parking Aid Speaker C4015.
- Measure the resistance between the parking aid speaker pin 1, component side and the parking aid speaker pin 2, component side.
  
  Fig 1: Checking Parking Aid Speaker Resistance
  Courtesy of FORD MOTOR CO.
- Is the resistance between 40 and 60 ohms?
- Yes: For DTC B1B52:14, GO to F3 .
  For DTC B1B52:12, GO to F7.
- No: INSTALL a new parking aid speaker. REFER to PARKING AID MODULE (PAM) . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the scan tool data link test.
F3 CHECK THE SPEAKER SOUNDER (+) CIRCUIT FOR A SHORT TO GROUND
- Connect: Parking Aid Speaker C4015.
- Disconnect: PAM C4014.
- Measure the resistance between the PAM C4014-2, circuit CMP09 (BN/BU), harness side and ground.
  
  Fig 2: Measuring Resistance Between PAM C4014-2 And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes: GO to F5.
- No: GO to F4 .
F4 CHECK THE SPEAKER SOUNDER (+) CIRCUIT FOR A SHORT TO GROUND WITH THE PARKING AID SPEAKER DISCONNECTED
- Disconnect: Parking Aid Speaker C4015.
- Measure the resistance between the PAM C4014-2, circuit CMP09 (BN/BU), harness side and ground.
  
  Fig 3: Measuring Resistance Between PAM C4014-2 And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes: REPAIR circuit RMP09 (BU/GN). CLEAR the DTCs. REPEAT the self-test.
- No: REPAIR circuit VMP03 (VT/GN). CLEAR the DTCs. REPEAT the selftest.
F5 CHECK THE SPEAKER SOUNDER (+) CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Parking Aid Speaker C4015.
- Measure the resistance between the parking aid speaker C4015-2, circuit CMP09 (BN/BU), harness side and the PAM C4014-2, circuit CMP09 (BN/BU), harness side.
  
  Fig 4: Checking Speaker Sounder (+) Circuit For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to F6 .
- No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
F6 CHECK THE SPEAKER SOUNDER (-) CIRCUIT FOR AN OPEN
- Measure the resistance between the parking aid speaker C4015-1, circuit RMP09 (BU/GN), harness side and the PAM C4014-6, circuit RMP09 (BU/GN), harness side.
  
  Fig 5: Checking Speaker Sounder (-) Circuit For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to F8.
- No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
F7 CHECK THE PARKING AID SPEAKER CIRCUITRY FOR SHORTS TO VOLTAGE
- Ignition ON.
- Disconnect: PAM C4014.
- Measure the voltage between the PAM C4014-2, circuit CMP09 (BN/BU), harness side and ground; and between the PAM C4014-6, circuit RMP09 (BU/GN), harness side and ground.
  
  Fig 6: Measuring Voltage Between PAM C4014-2 And Ground
  Courtesy of FORD MOTOR CO.
- Is any voltage present?
- Yes: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
- No: GO to F8 .
F8 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?
- Yes: INSTALL a new PAM . REFER to PARKING AID MODULE (PAM) . CLEAR the DTCs. 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.