Rear Spoiler Switch Sense Circuit

WHEN MONITORED
Continuous.

SET CONDITION
The Body Control Module (BCM) reports a short to power, ground, or an open circuit failure on the Rear Spoiler Switch Sense circuit.

POSSIBLE CAUSES
- Rear spoiler switch sense circuit shorted to voltage
- Rear spoiler switch sense circuit shorted to ground
- Rear spoiler switch sense circuit open
- Body control module

Diagnostic Test




1. MEASURE THE RESISTANCE OF THE REAR SPOILER SWITCH SENSE CIRCUIT
Turn the ignition off.
Disconnect the BCM harness connector.
Disconnect the Rear Spoiler Switch harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of the Rear Spoiler Switch Sense circuit from the BCM harness connector to the Rear Spoiler Switch harness connector.

Q: Is the resistance below 5.0 ohms?

YES: Go to 2
NO: Repair the Rear Spoiler Switch Sense circuit for an open. Perform REAR SPOILER VERIFICATION TEST. Rear Spoiler Verification Test




2. MEASURE THE VOLTAGE OF THE REAR SPOILER SWITCH SENSE CIRCUIT

Turn the ignition on.
Measure the voltage of the Rear Spoiler Switch Sense circuit at the Rear Spoiler Switch harness connector.

Q: Is voltage present?

YES: Repair the Rear Spoiler Switch Sense circuit for a short to voltage. Perform REAR SPOILER VERIFICATION TEST. Rear Spoiler Verification Test
NO: Go to 3




3. MEASURE THE RESISTANCE OF THE REAR SPOILER SWITCH SENSE CIRCUIT

Turn the ignition off.
Measure the resistance between ground and the Rear Spoiler Switch Sense circuit at the Rear Spoiler Switch harness connector.

Q: Is the resistance below 10K ohms?

YES: Repair the Rear Spoiler Switch Sense circuit for a short to ground. Perform REAR SPOILER VERIFICATION TEST. Rear Spoiler Verification Test
NO: Replace the Body Control Module. Perform REAR SPOILER VERIFICATION TEST. Rear Spoiler Verification Test