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

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. 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 SPEAKER CONNECTOR FOR CORRECT LATCHING
- Ignition OFF.
- Inspect the PAM speaker connector for correct latching by pulling on the latched connector.
Is the connector latched?
- Yes : GO to F2.
- No : Correctly LATCH the connector. CLEAR the DTCs. TEST the system for normal operation.
F2 MEASURE THE PARKING AID SPEAKER RESISTANCE
- Disconnect: Parking Aid Speaker C3268 .
- Measure the resistance between the parking aid speaker pin 2, component side and the parking aid speaker pin 1, component side.
  
  Fig 1: Measuring Resistance Between Parking Aid Speaker Pin 1 And 2
  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. TEST the system for normal operation.
F3 CHECK THE PARKING AID SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND
- Connect: Parking Aid Speaker C3268 .
- 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, Circuit CMP09 (BN/BU) 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 PARKING AID SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND WITH THE PARKING AID SPEAKER DISCONNECTED
- Disconnect: Parking Aid Speaker C3268 .
- Measure the resistance between the PAM C4014-2 , circuit CMP09 (BN/BU), harness side and ground.
  
  Fig 3: Measuring Resistance Between PAM C4014-2, Circuit CMP09 (BN/BU) And Ground
  Courtesy of FORD MOTOR CO.
Is the resistance greater than 10, 000 ohms?
- Yes : REPAIR circuit RMP09 (BU/GN). CLEAR the DTCs. TEST the system for normal operation.
- No : REPAIR circuit CMP09 (BN/BU). CLEAR the DTCs. TEST the system for normal operation.
F5 CHECK THE PARKING AID SPEAKER (+) CIRCUIT FOR AN OPEN
- Disconnect: Parking Aid Speaker C3268 .
- Measure the resistance between the parking aid speaker C3268-2 , circuit CMP09 (BN/BU), harness side and the PAM C4014-2 , circuit CMP09 (BN/BU), harness side.
  
  Fig 4: Measuring Resistance Between Parking Aid Speaker C3268-2, Circuit CMP09 (BN/BU) And PAM C4014-2
  Courtesy of FORD MOTOR CO.
Is the resistance less than 5 ohms?
- Yes : GO to F6.
- No : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.
F6 CHECK THE PARKING AID SPEAKER (-) CIRCUIT FOR AN OPEN
- Measure the resistance between the parking aid speaker C3268-1 , circuit RMP09 (BU/GN), harness side and the PAM C4014-6 , circuit RMP09 (BU/GN), harness side.
  
  Fig 5: Measuring Resistance Between Parking Aid Speaker C3268-1, Circuit RMP09 (BU/GN) And PAM C4014-6
  Courtesy of FORD MOTOR CO.
Is the resistance less than 5 ohms?
- Yes : GO to F8.
- No : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.
F7 CHECK THE PARKING AID SPEAKER CIRCUITRY FOR SHORTS TO VOLTAGE
- Ignition ON.
- 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, Circuit CMP09 (BN/BU) And Ground
  Courtesy of FORD MOTOR CO.
Is any voltage present?
- Yes : REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.
- No : GO to F8.
F8 CHECK FOR CORRECT PAM OPERATION
- Connect: All Disconnected Connectors.
- 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. CLEAR the DTCs. REPEAT the self-test.