Rear Spoiler Limit Switch Signal (Up) Circuit
REAR SPOILER LIMIT SWITCH SIGNAL (UP) CIRCUITRear Spoiler Limit Switch Signal (Up) Circuit:
WHEN MONITORED
Continuous.
SET CONDITION
The Body Control Module (BCM) reports a short to power, or an open circuit on the Rear Spoiler Limit Switch Signal (Up) circuit.
POSSIBLE CAUSES
- Rear spoiler limit switch signal (up) circuit shorted to B(+)
- Open rear spoiler limit switch ground circuit
- Rear spoiler limit switch signal (up) circuit open
- Body control module
DIAGNOSTIC TEST
1. REAR SPOILER LIMIT SWITCH SIGNAL (UP) CIRCUIT SHORT TO B(+)
Turn the ignition off.
Disconnect the BCM harness connector.
Disconnect the Rear Spoiler Limit Switch harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Rear Spoiler Limit Switch Signal (Up) circuit at the Rear Spoiler Limit Switch harness connector.
Q: Is the voltage above 1.0 volts?
YES: Repair the Rear Spoiler Limit Switch Signal (Up) circuit for a short to B(+). Perform REAR SPOILER VERIFICATION TEST. Rear Spoiler Verification Test
NO: Go to 2
2. OPEN REAR SPOILER LIMIT SWITCH SIGNAL (UP) CIRCUIT
Turn the ignition off.
Measure the resistance of the Rear Spoiler Limit Switch Signal (Up) circuit from the BCM C4 harness connector to the Rear Spoiler Limit Switch harness connector.
Q: Is the resistance below 5.0 ohms?
YES: Go to 3
NO: Repair the Rear Spoiler Limit Switch Signal (Up) circuit for an open. Perform REAR SPOILER VERIFICATION TEST. Rear Spoiler Verification Test
3. OPEN REAR SPOILER LIMIT SWITCH GROUND CIRCUIT
With the ignition off.
Measure the resistance between ground and the Rear Spoiler Limit Switch Ground circuit at the Rear Spoiler Limit Switch harness connector.
Q: Is the resistance below 5.0 ohms?
YES: Replace the Body Control Module. Perform REAR SPOILER VERIFICATION TEST. Rear Spoiler Verification Test
NO: Repair the Rear Spoiler Limit Switch Ground circuit for an open. Perform REAR SPOILER VERIFICATION TEST. Rear Spoiler Verification Test