B2544

B2544-DECKLID LATCH LIMIT SWITCH/DECKLID POSITION SENSOR CORRELATION





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the Ignition Switch in the on position and the Power Top Control Module (PTCM) is awake.

- Set Condition:
This code will set when there is a timeout in the roof sequence because the Decklid Latch Limit Switch and Decklid Position Sensor are stuck active or shorted to ground at the same time.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase all PTCM DTC's.
Try to operate the Power Top Switch.
Wait 30 seconds.
With the scan tool, read all PTCM DTC's.
Does the scan tool display this DTC as active?

Yes

- Go to 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

2. DECKLID LATCH LIMIT SWITCH
Raise the Decklid to the open position.
Turn the ignition off.
Disconnect the Decklid Latch Limit Switch harness connector.
Turn the ignition on.
With the scan tool, erase all PTCM DTC's.
With the scan tool, check for active PTCM DTC's.
Does the scan tool display this DTC as active?

Yes

- Go to 3

No

- Replace the Decklid Latch Limit Switch.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

3. DECKLID POSITION SENSOR
Raise the Decklid.
Turn the ignition off.
Disconnect the Decklid Position Sensor harness connector.
Turn the ignition on.
With the scan tool, erase all PTCM DTC's.
With the scan tool, check for active PTCM DTC's.
Does the scan tool display this DTC as active?

Yes

- Go to 4

No

- Replace the Position Sensor.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

4. (Q974) DECKLID LIMIT SWITCH LATCH SIGNAL CIRCUIT SHORTED TO GROUND




Turn the ignition off.
Disconnect the Power Top Module C1 harness connector.
Measure the resistance between Ground and the (Q974) Decklid Limit Switch Latch Signal circuit.
Does the ohm meter read open circuit?

Yes

- Go to 5

No

- Repair the (Q974) Decklid Limit Switch Latch Signal circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

5. (Q975) DECKLID POSITION SIGNAL CIRCUIT SHORTED TO GROUND




Measure the resistance between Ground and the (Q975) Decklid Position Signal circuit.
Does the ohm meter read open circuit?

Yes

- Replace the Power Top Control Module (PTCM).
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Repair the (Q975) Decklid Position Signal circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test