Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2011 >> F 150 2WD V6-3.7L >> Repair and Diagnosis >> Steering and Suspension >> Steering >> Steering Column >> Testing and Inspection >> Pinpoint Tests >> Steering Column Switches >> Pinpoint Test F: DTC B1310:12

Pinpoint Test F: DTC B1310:12




Steering Column Switches

Pinpoint Tests

Pinpoint Test F: DTC B1310:12

Refer to Wiring Diagram Set 13, Power Distribution/SJB for schematic and connector information. Diagrams By Number

Normal Operation

When the ignition is placed in RUN mode, the Body Control Module (BCM) module provides a ground for the coil (control) side of the run/start relay located in the Battery Junction Box (BJB). The BCM monitors the run/start relay control circuit and sets the applicable DTC if the circuit is open, shorted to ground or shorted to voltage.

- DTC B1310:12 (Run/Start Control: Circuit Short to Battery) - this DTC sets if the BCM detects a short to battery in the run/start relay control circuit during a BCM self-test or during normal operation.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Run/start relay
- BCM

PINPOINT TEST F: DTC B1310:12

-------------------------------------------------
F1 CHECK THE RUN/START RELAY

- Disconnect: Run/Start Relay.
- Carry out the appropriate relay component test.

- Is the relay OK?

Yes
GO to F2.

No
INSTALL a new run/start relay. CARRY OUT a self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs. TEST the system for normal operation.

-------------------------------------------------
F2 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

- Ignition ON.
- Measure and record battery voltage.





- NOTICE: This pinpoint test step directs testing circuits using a back-probe method. Use the special back-probe tool specified in the tool list. Do not force test leads or other probes into connectors. Adequate care must be exercised to avoid connector terminal damage while ensuring that good electrical contact is made with the circuit or terminal. Failure to follow these instructions may cause damage to wiring, terminals, or connectors and subsequent electrical faults

- Measure the voltage by backprobing between BCM C2280F-18, circuit CDC55 (BN/VT), harness side and ground.
- Is the voltage equal to the recorded battery voltage?

Yes
REPAIR circuit CDC55 (BN/VT) for a short to voltage. CARRY OUT a self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs. TEST the system for normal operation.

No
GO to F3.

-------------------------------------------------
F3 CHECK FOR CORRECT BCM OPERATION

- Disconnect: All BCM Connectors.
- Check the connectors for:
- corrosion
- damaged pins
- pushed-out pins
- Connect: All BCM Connectors.
- Connect: Run/Start Relay.
- Make sure the connectors are seated correctly, then carry out a BCM self-test.
- 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 Service and Repair. CARRY OUT a self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all 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. CARRY OUT a self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs. TEST the system for normal operation.

-------------------------------------------------
pro multis · About Operation CHARM