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B3680




DTC B3680

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors
DTC B3680 01
- Movable Roof Pump Motor Circuit short to battery

DTC 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

Diagnostic Fault Information






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 B+ circuit FTC module X1, terminal 26.
* DTC B3680 04 sets when using special function

Reference Information
Schematic Reference

Folding Top Schematics [1][2]Convertible Top
Connector End View Reference

Component Connector End Views Connector End Views By Name
Description and Operation

Power Folding Top Description and Operation Power Folding Top
Electrical Information Reference

* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Programming and Relearning for scan tool information

Circuit/System Testing

B3680 01
1. Ignition OFF, disconnect the harness connector at the folding top pump motor.
2. Ignition ON, connect a test lamp between control circuit terminal 1 and ground. The test lamp should not illuminate.

If the test lamp illuminates, test the control circuit for a short to voltage.

3. If all circuits test normal, repair a short to voltage on the control circuit terminal 2.

B3680 02
1. Ignition OFF, disconnect the harness connector at the folding top pump motor.
2. Connect a test lamp between control circuit terminal 1 and ground.
3. Ignition ON, use a scan tool to command the pump motor direction A ON. The test lamp should illuminate.

If the test lamp does not illuminate, test the control circuit for a short to ground.

4. If all circuits test normal, repair a short to ground on the control circuit terminal 2.

B3680 04
1. Ignition OFF, disconnect the harness connector at the folding top pump motor.
2. Connect a test lamp between control circuit terminal 1 and ground.
3. Ignition ON, use a scan tool to command the pump motor direction A ON. The test lamp should illuminate.

If the test lamp does not illuminate, test the control circuit for an open/high resistance.

4. If all circuits test normal, repair an open/high resistance on the control circuit terminal 2.

B3680 0B

Replace the folding top pump motor.

B3680 0C

Replace the folding top pump motor.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

Folding Top Pump with Motor Replacement (Motor) Service and RepairFolding Top Pump with Motor Replacement (Pump) Folding Top Pump with Motor Replacement (Pump)