B316A

DTC B316A

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 B316A 01
- All Windows Control Request Circuit short to battery

DTC B316A 02
- All Windows Control Request Circuit short to ground

Diagnostic Fault Information






Circuit/System Description

During top operation, the folding top control (FTC) module sends a signal to the window regulators to index the windows open on the retractable hard top request circuits. Upon completion of top operation it sends a signal to close the windows. The FTC monitors the retractable hard top request circuits for proper operation.

Conditions for Running the DTC

The FTC module is active.

Conditions for Setting the DTC

A short to ground or short to voltage is detected on one or both retractable hard top request circuits.

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

An open on either retractable hard top request circuit will cause the windows to be inoperative during top operation.

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

B316A 01
1. Ignition OFF, disconnect the X1 harness connector at the FTC Module.
2. Ignition ON, verify that a test lamp does not illuminate between the serial data circuit terminal 23 and ground.

• If the test lamp illuminates, test the serial data circuit for a short to voltage.

3. Verify that a test lamp does not illuminate between the serial data circuit terminal 11 and ground.

• If the test lamp illuminates, test the serial data circuit for a short to voltage.

4. If all circuits test normal, replace the FTC module.

B316A 02
1. Ignition OFF, disconnect the X1 harness connector at the FTC Module.
2. Ignition ON, verify that a test lamp does not illuminate between the serial data circuit terminal 23 and B+.

• If the test lamp illuminates, test the serial data circuit for a short to ground.

3. Verify that a test lamp does not illuminate between the serial data circuit terminal 11 and B+.

• If the test lamp illuminates, test the serial data circuit for a short to ground.

4. If all circuits test normal, replace the FTC module.

Repair Instructions

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

Folding Top Control Module Replacement Service and Repair