Door Lock/Door Unlock Switch Sense Circuit

DOOR LOCK/DOOR UNLOCK SWITCH SENSE CIRCUIT

Door Lock/Door Unlock Switch Sense Circuit:

WHEN MONITORED
Continuous.

SET CONDITION
The Central Locking Pump/Security System Module (CLP/SSM) reports a short to power, ground, or an open circuit failure that is detected between the Body Control Module (BCM) and the Sentry Key Remote Entry Module (SKREEM) on the Door Lock/Unlock Switch Sense circuit.

POSSIBLE CAUSES
- Door lock/unlock switch sense circuit shorted to voltage
- Door lock/unlock switch sense circuits shorted together
- Door lock/unlock switch sense circuit shorted to ground
- Door lock/unlock switch sense circuit open
- Body control module internal failure

DIAGNOSTIC TEST

1. MEASURE THE RESISTANCE OF THE DOOR LOCK SWITCH SENSE CIRCUIT




Turn the ignition off.
Disconnect the BCM harness connector.
Disconnect the SKREEM C1 harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of the Door Lock Switch Sense circuit from the BCM harness connector to the SKREEM harness connector.

Q: Is the resistance below 5.0 ohms?

YES: Go to 2
NO: Repair the Door Lock Switch Sense circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test

2. MEASURE THE RESISTANCE OF THE DOOR UNLOCK SWITCH SENSE CIRCUIT




Measure the resistance of the Door Unlock Switch Sense circuit from the BCM harness connector to the SKREEM harness connector.

Q: Is the resistance below 5.0 ohms?

YES: Go to 3
NO: Repair the Door Unlock Switch Sense circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test

3. MEASURE THE RESISTANCE OF THE DOOR LOCK/UNLOCK SWITCH SENSE CIRCUITS




Measure the resistance between the Door Lock/Unlock Switch Sense circuits at the SKREEM harness connector.

Q: Is the resistance below 10K ohms?

YES: Repair the Door Lock/Unlock Switch Sense circuits for a short together. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 4

4. MEASURE THE VOLTAGE OF THE DOOR LOCK SWITCH SENSE CIRCUIT




Turn the ignition on.
Measure the voltage of the Door Lock Switch Sense circuit at the SKREEM C1 harness connector.

Q: Is the voltage above 1.0 volts?

YES: Repair the Door Lock Switch Sense circuit for a short to B(+). Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 5

5. MEASURE THE VOLTAGE OF THE DOOR UNLOCK SWITCH SENSE CIRCUIT




Measure the voltage of the Door Unlock Switch Sense circuit at the SKREEM C1 harness connector.

Q: Is voltage above 1.0 volts?

YES: Repair the Door Unlock Switch Sense circuit for a short to B(+). Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 6

6. MEASURE THE RESISTANCE OF THE DOOR LOCK SWITCH SENSE CIRCUIT




Turn the ignition off.
Measure the resistance between ground and the Door Lock Switch Sense circuit at the SKREEM harness connector.

Q: Is the resistance below 10K ohms?

YES: Repair the Door Lock Switch Sense circuit for a short to ground. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 7

7. MEASURE THE RESISTANCE OF THE DOOR UNLOCK SWITCH SENSE CIRCUIT




Measure the resistance between ground and the Door Unlock Switch Sense circuit at the SKREEM C1 harness connector.

Q: Is the resistance below 10K ohms?

YES: Repair the Door Unlock Switch Sense circuit for a short to ground. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Replace the Body Control Module. Perform BODY VERIFICATION TEST. Body Verification Test