FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2012 >> Focus L4-2.0L >> Repair and Diagnosis >> Body and Frame >> Locks >> Power Locks >> Testing and Inspection >> Pinpoint Tests >> Handles, Locks, Latches and Entry Systems - without Door Modules (without Window One-touch Up) >> Diagnostic Routine Y

Diagnostic Routine Y




Diagnostic Routine Y

Diagnostic Overview

The Door Lock Control Switch Indicator is Inoperative or Always On

Refer to Wiring Diagram Set 110 for schematic and connector information Electrical Diagrams.

Normal Operations and Fault Conditions

The BCM (Body Control Module) controls the door lock control switch indicator. The door lock control switch is illuminated when all of the doors are locked and off when any of the doors is unlocked. The BCM (Body Control Module) provides voltage to the door lock control switch indicator and the indicator uses a common ground in the FCIM (Front Controls Interface Module). When the ignition is in the ON mode, the indicator is always on as long as the doors are locked. When the ignition is in the OFF mode, the indicator illuminates for approximately 30 seconds when a lock command is received and then it turns off.

The BCM (Body Control Module) monitors the lock/unlock feedback circuits to determine the status of the door locks and to turn the indicator on or off. All 4 door latches have an internal lock/unlock feedback switch that is connected to ground when the door is unlocked and open when the door is locked.

DTC Fault Trigger Conditions






Visual Inspection and Diagnostic Pre-checks

- Inspect the door lock control switch.

Pinpoint Test

1. CHECK THE DOOR LOCK ACTUATOR OPERATION

1. Close all 4 doors and the liftgate/luggage compartment lid.

2. Press the lock button on a RKE (Remote Keyless Entry) transmitter.

3. Attempt to open each door using the outside door handle.

4. Press the unlock button twice on a RKE (Remote Keyless Entry) transmitter.

5. Attempt to open each door using the outside door handle.

Is there a door that can be opened when the doors are locked or that cannot be opened when the doors are unlocked?






2. CHECK THE DOOR AJAR INPUT

1. Open and close the doors while checking the courtesy lamp operation.

Do the courtesy lamps operate correctly?






3. CHECK THE OPERATION OF THE LOCK/UNLOCK INPUTS

1. Press the unlock button twice on a RKE (Remote Keyless Entry) transmitter to unlock all 4 doors.

2. Using a scan tool, perform the BCM (Body Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

3. Press the lock button on a RKE (Remote Keyless Entry) transmitter to lock all 4 doors.

4. Using a scan tool, clear the BCM (Body Control Module) DTCs (Diagnostic Trouble Codes) and repeat the self-test.

Are all 4 DTCs (Diagnostic Trouble Codes) B12D3:23, B13B0:13, B13B1:13, and B13B2:13 set when the doors are locked, and are all 4 DTCs (Diagnostic Trouble Codes) cleared when the doors are unlocked?






4. CHECK THE ILLUMINATION OF THE INDICATOR

1. Ignition ON.

2. Observe the illumination of the door lock indicator with the doors unlocked.

Is the indicator always illuminated?






5. CHECK THE INDICATOR OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

1. Ignition OFF.

2. Disconnect: BCM (Body Control Module) C2280C.

3. Disconnect: Ignition Relay.

4. Connect a fused jumper wire:





5. Observe the illumination of the door lock indicator.

Is the indicator still illuminated?






6. CHECK THE OPERATION OF THE FCIM (Front Controls Interface Module)

1. Operate the radio through the FCIM (Front Controls Interface Module).

Does the FCIM (Front Controls Interface Module) operate the radio?






7. CHECK FOR VOLTAGE TO THE FCIM (Front Controls Interface Module)

1. Ignition OFF.

2. Disconnect: FCIM (Front Controls Interface Module) C2402.

3. Ignition ON.

4. Press the lock button on a RKE (Remote Keyless Entry) transmitter.

5. Measure:





Is the voltage greater than 11 volts?






8. CHECK THE INDICATOR OUTPUT CIRCUIT FOR A SHORT TO GROUND

1. Ignition OFF.

2. Disconnect: BCM (Body Control Module) C2280C.

3. Measure:





Is the resistance greater than 10,000 ohms?






9. CHECK THE INDICATOR OUTPUT CIRCUIT FOR AN OPEN

1. Measure:





Is the resistance less than 3 ohms?






10. CHECK THE SUSPECT LATCH SWITCH FOR AN OPEN

1. Disconnect: Suspect Door Latch.

2. Connect a fused jumper wire:





3. Press the unlock button on a RKE (Remote Keyless Entry) transmitter.

4. Using a scan tool, clear the BCM (Body Control Module) DTCs (Diagnostic Trouble Codes) and repeat the self-test.

Are all 4 DTCs (Diagnostic Trouble Codes) B12D3:23, B13B0:13, B13B1:13, and B13B2:13 cleared?






11. CHECK THE SUSPECT LOCK/UNLOCK MONITOR CIRCUIT FOR AN OPEN

1. Ignition OFF.

2. Disconnect: BCM (Body Control Module) C2280B.

3. Measure:





Is the resistance less than 3 ohms?






12. CHECK THE SUSPECT LATCH SWITCH FOR A SHORT TO GROUND

1. Disconnect: Suspect Door Latch.

2. Press the lock button on a RKE (Remote Keyless Entry) transmitter.

3. Using a scan tool, clear the BCM (Body Control Module) DTCs (Diagnostic Trouble Codes) and repeat the self-test.

Are all 4 DTCs (Diagnostic Trouble Codes) B12D3:23, B13B0:13, B13B1:13, and B13B2:13 set?






13. CHECK THE LOCK/UNLOCK MONITOR CIRCUIT FOR A SHORT TO GROUND

1. Ignition OFF.

2. Disconnect: BCM (Body Control Module) C2280B.

3. Measure:





Is the resistance greater than 10,000 ohms?






14. CHECK FOR CORRECT BCM (Body Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all BCM (Body Control Module) connectors.

3. Repair:

- corrosion (install new connectors or terminals-clean module pins)
- damaged or bent pins- install new terminals pins
- pushed-out pins- install new pins as necessary

4. Reconnect all the BCM (Body Control Module) connectors and make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?





pro multis Credits:Operation CHARM About Operation CHARM