Circuit Description
The folding top control (FTC) module checks the rear compartment lid (decklid) open switch signal circuit of the rear compartment lid (decklid) open switch, at least once every 300 milliseconds. The FTC module compares the deck lid open signal circuit against the decklid ajar switch, that is sent by class 2 message. As the folding top is starting to operate, the decklid will be released, a class 2 message is sent indicating the decklid ajar switch is ajar. The FTC module will continue to raise the decklid upward until it is fully extended, closing the decklid open switch. The accessory voltage supplied to the decklid open switch will then be applied through the decklid signal circuit to the FTC module. Once this signal is received, the FTC module can continue to cycle the folding top operation.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B3669 Deck Lid Position Sensor Circuit
Conditions for Running the DTC
The battery voltage is between 9-16 volts.
Conditions for Setting the DTC
The FTC module monitors the decklid open switch signal switch and the class 2 message of the decklid ajar switch. A DTC is set if both are active.
Action Taken When the DTC Sets
| • | Stores a current and history DTC B3669 in the FTC module. |
| • | The folding top operation is suspended. |
Conditions for Clearing the DTC
| • | This DTC will clear on the current status after the condition for setting the fault is corrected. |
| • | A history DTC will clear after 50 consecutive ignition cycles without a fault present. |
| • | History and current DTC can be cleared using the scan tool. |
Diagnostic Aids
If the DTC does not reset after the code is cleared, then the switch may be the intermittent fault. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Folding Top Schematics Connector End View Reference: Power and Grounding Connector End Views in Wiring Systems | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the scan tool display Inactive? | Go to Step 3 | Go to Step 4 |
3 |
Does the scan tool display Inactive? | Go to Step 6 | Go to Step 4 |
4 | Test the signal circuit of the decklid open switch for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 5 |
5 | Inspect for poor connections at the harness connector of the folding top control module. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 7 |
6 | Inspect for poor connections at the harness connector of the decklid open switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
7 |
Important: Perform the setup procedure for the folding top control module. Replace the FTC module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming . Did you complete the replacement? | Go to Step 9 | -- |
8 |
Did you complete the replacement? | Go to Step 9 | -- |
9 |
Does the DTC reset? | Go to Step 2 | System OK |
