Pinpoint Test B: DTC B1305:01

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. 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.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

B1 CHECK THE HOOD SWITCH
- Disconnect: Hood Switch C127.
- Connect a fused jumper wire between the hood switch C127-1, circuit CPL25 (BU/OG), harness side and the hood switch C127-2, circuit GD122 (BK), harness side.
  
  Fig 1: Connecting Fused Jumper Wire Between Hood Switch C127-1, Circuit CPL25 (BU/OG) And Hood Switch C127-2, Circuit GD122 (BK)
  Courtesy of FORD MOTOR CO.
- Clear the BCM DTCs.
- Repeat the BCM self-test.
- Is the BCM DTC B1305: 01 retrieved?
- Yes : REMOVE the jumper wire. GO to B2.
- No : REMOVE the jumper wire. INSTALL a new hood switch. TEST the system for normal operation.
B2 CHECK THE HOOD SWITCH GROUND CIRCUIT
- Disconnect: Negative Battery Cable.
- Measure the resistance between the hood switch C127-2, circuit GD122 (BK), harness side and ground.
  
  Fig 2: Measuring Resistance Between Hood Switch C127-2, Circuit GD122 (BK) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to B3.
- No : REPAIR circuit GD122 (BK) for an open. TEST the system for normal operation.
B3 CHECK THE HOOD SWITCH SIGNAL CIRCUIT TO THE BCM FOR AN OPEN
- Disconnect: BCM C2280F.
- Connect a fused jumper wire between the hood switch C127-1, circuit CPL25 (BU/OG), harness side and the hood switch C127-2, circuit GD122 (BK), harness side.
  
  Fig 3: Connecting Fused Jumper Wire Between Hood Switch C127-1, Circuit CPL25 (BU/OG) And Hood Switch C127-2, Circuit GD122 (BK)
  Courtesy of FORD MOTOR CO.
- Measure the resistance between the BCM C2280F-2, circuit CPL25 (BU/OG), harness side and ground.
  
  Fig 4: Measuring Resistance Between BCM C2280F-2, Circuit CPL25 (BU/OG) And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to B4.
- No : REPAIR circuit CPL25 (BU/OG) for an open. TEST the system for normal operation.
B4 CHECK FOR CORRECT BCM OPERATION
- Disconnect all the BCM connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the BCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new BCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . 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.