Circuit Description
The roof door module (RDM) checks the status of the signal circuits from the folding top switch at least once every 300 milliseconds. The folding top switch has a constant ground source supplied. Pressing the folding top switch to the open or close position will apply a ground signal to the RDM. The RDM monitors the signal request to control direction movement of the folding top.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B3602 Convertible Top/Moveable Roof Control Switch
Conditions for Running the DTC
| • | The battery voltage is between 9-16 volts. |
| • | Ignition is in the Run or Accessory position or retained accessory power (RAP) is active. |
Conditions for Setting the DTC
If the RDM detects inputs on both folding top switch open and close signal circuits at the same time.
Action Taken When the DTC Sets
| • | Stores a current and history DTC B3602 in the RDM. |
| • | The 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 Idle? | Go to Step 3 | Go to Step 4 |
3 |
Does the Top Control Switch parameter change state with each activation? | Go to Diagnostic Aids | Go to Step 4 |
4 |
Does the scan tool display Idle? | Go to Step 9 | Go to Step 5 |
5 | Does the scan tool display Top Open? | Go to Step 6 | Go to Step 7 |
6 | Test the folding top switch down signal circuit of the retractable roof switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 8 |
7 | Test the folding top switch up signal circuit of the folding top switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 10 |
8 | Inspect for poor connections at the harness connector of the RDM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 10 |
9 | Inspect for poor connections at the harness connector of the folding top switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 11 |
10 |
Important: Always perform the reinitialization of the power windows procedure for the RDM.
Did you complete the replacement? | Go to Step 12 | -- |
11 | Replace the folding top switch. Refer to Side Window and Multifunction Switch Replacement in Doors. Did you complete the replacement? | Go to Step 12 | -- |
12 |
Does the DTC reset? | Go to Step 2 | System OK |
