S3 and S4 are part of the Rear Compartment Lid Release switch. The Folding Top Control (FTC) Module uses S3 and S4 to determine whether the claws at the rear of the deck lid are latched into the deck lid or unlatched. S3 closes and supplies a 12 volt reference to the signal circuit when the claws are unlatched. S4 closes and supplies a 12 volt reference to the signal circuit when the claws are latched.

The Folding Top Control (FTC) module is active.

A short to ground is detected on the 12 volt reference or signal circuits of S3 and S4.

The top is disabled.

The fault is no longer present and the top completes one cycle.

A short to B+ may damage S3 or S4.

Schematic Reference

Folding Top Schematics

Connector End View Reference

Power Roof Systems Connector End Views

Description and Operation

Power Folding Top Description and Operation

Electrical Information Reference

Scan Tool Reference

Scan Tool Output Controls

Scan Tool Data List

Scan Tool Data Definitions

1. Disconnect FTC Module C 2.
2. Probe the signal circuit of S3 with a test lamp connected to B+. The test lamp should not illuminate.

⇒	If the test lamp illuminates, repair a short to ground on the signal circuit.

3. Probe the signal circuit of S4 with a test lamp connected to B+. The test lamp should not illuminate.

⇒	If the test lamp illuminates, repair a short to ground on the signal circuit.

4. Remove the Rear Compartment Lid Release Switch.
5. Test for continuity between pin C and pin A. There should not be continuity.

⇒	If continuity is found, replace the Rear Compartment Lid Release switch.

6. Test for continuity between pin C and pin B. There should not be continuity.

⇒	If continuity is found, replace the Rear Compartment Lid Release switch.

7. If circuits test OK, replace the FTC Module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Rear Compartment Lid Release Switch Replacement - Rear Compartment Lid Hinge

Folding Top Control Module Replacement