Circuit Description
The roof door module (RDM) monitors the folding top valve control output circuits from RDM at least once every 3 milliseconds. The folding top control valves have ignition 0 voltage supplied. As the folding top control switch is applied to either the open or close position, the RDM will apply the appropriate folding top valve control signals, channeling the specific hydraulic passage/pressure to move the roof system in the correct sequence.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B3677 Convertible Top/Moveable Roof Control Valve 4 Circuit
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 a short to power on the folding top control valve control circuit. |
| • | If the RDM detects an open or short to ground on the folding top control valve control circuit. |
| • | If the RDM detects an open or high resistance on the folding top control valve supply voltage circuit. |
Action Taken When the DTC Sets
| • | Stores a current and history DTC B3677 in the RDM. |
| • | The roof 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 |
Do the valves turn ON and OFF with each command? | Go to Diagnostic Aids | Go to Step 3 |
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 10 |
4 |
Does the test lamp turn ON and OFF with each command? | Go to Step 8 | Go to Step 5 |
5 | Does the test lamp remain illuminated with each command? | Go to Step 7 | Go to Step 6 |
6 | Test the control circuit of the inoperative valve for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 9 |
7 | Test the control circuit of the inoperative valve 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 13 | Go to Step 9 |
8 | Inspect for poor connections at the inoperative valve. 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 13 | Go to Step 11 |
9 | Inspect for poor connections at the harness connector of the roof door module (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 13 | Go to Step 12 |
10 | Repair the ignition 10 voltage circuit of the inoperative valve. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 13 | -- |
11 | Replace the inoperative valve. Refer to Folding Top Pump with Motor Replacement . Did you complete the replacement? | Go to Step 13 | -- |
12 |
Important: Always perform the reinitialization of the power windows procedure for the RDM.
Did you complete the replacement? | Go to Step 13 | -- |
13 |
Does the DTC reset? | Go to Step 2 | System OK |
