Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC B3680 01: Movable Roof Pump Motor Circuit short to batteryDTC B3680 02: Movable Roof Pump Motor Circuit short to ground
DTC B3680 04: Movable Roof Pump Motor Circuit open circuit
DTC B3680 0B: Movable Roof Pump Motor Circuit pump motor current above 35A
DTC B3680 0C: Movable Roof Pump Motor Circuit pump motor current below 3A
Circuit/System Description
Hydraulic pressure for the folding top system is generated by the Folding Top Pump Motor. The folding top control (FTC) module controls both voltage and ground for the Folding Top Pump Motor. The FTC Module also monitors the circuits for proper operation.
Conditions for Running the DTC
The FTC module is enabled.
Conditions for Setting the DTC
B3680 01
A short to voltage on the folding top pump motor direction A voltage circuit or the folding top pump motor direction B voltage circuit.
B3680 02
A short to ground on the folding top pump motor direction A voltage circuit or the folding top pump motor direction B voltage circuit.
B3680 04
An open on the folding top pump motor direction A voltage circuit or the folding top pump motor direction B voltage circuit.
B3680 0B
Pump motor current is above 35 amps.
B3680 0C
Pump motor current is below 3 amps.
Action Taken When the DTC Sets
The top is disabled.
Conditions for Clearing the DTC
The fault is no longer present and the top completes one cycle.
Diagnostic Aids
| • | DTC B1335 03 will set in conjunction with DTC B3680 if there is a short to ground on the battery positive voltage circuit main power circuit (terminal C1, pin 28). |
| • | DTC B3680 04 sets when using special function |
Reference Information
Schematic Reference
Description and Operation
Power Folding Top Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
B3680 01
- Disconnect the folding top pump motor.
- Probe the folding top pump motor direction A voltage circuit with a test lamp that is connected to ground. The test lamp should not illuminate.
- Repair a short to voltage on the folding top pump motor direction B voltage circuit.
| ⇒ | If the test lamp illuminates, repair a short to voltage on the folding top pump motor direction A voltage circuit. |
B3680 02
- Disconnect the folding top pump motor.
- Probe the folding top pump motor direction A voltage circuit with a test lamp that is connected to ground.
- Use a scan tool to command the pump motor direction A on. The test lamp should illuminate.
- Repair a short to ground on the folding top pump motor direction B voltage circuit.
| ⇒ | If the test lamp does not illuminate, repair a short to ground on the folding top pump motor direction A voltage circuit. |
B3680 04
- Disconnect the folding top pump motor.
- Probe the folding top pump motor direction A voltage circuit with a test lamp that is connected to ground.
- Use a scan tool to command the pump motor direction A on. The test lamp should illuminate.
- Repair an open on the folding top pump motor direction B voltage circuit.
| ⇒ | If the test lamp does not illuminate, repair an open on the folding top pump motor direction A voltage circuit. |
B3680 0B
Replace the folding top pump motor.
B3680 0C
Replace the folding top pump motor.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
