GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2007 🢒 G6 🢒 Roof 🢒 Folding Top 🢒 DTC B316A

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 B316A 01: All Windows Control Request Circuit short to battery

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

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

Description and Operation

Power Folding Top Description and Operation

Electrical Information Reference

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

Scan Tool Reference

    •  Scan Tool Data List
    •  Scan Tool Data Definitions
    •  Scan Tool Output Controls

Circuit/System Testing

B316A 01

  1. Disconnect C 1 from the FTC Module.
  2. Probe C 1 pin 23 with a test lamp connected to ground. The test lamp should not illuminate.
    3. ⇒If the test lamp illuminates, repair a short to voltage.
  3. Probe C 1 pin 11 with a test lamp connected to ground. The test lamp should not illuminate.
    4. ⇒If the test lamp illuminates, repair a short to voltage.
  4. If circuits test OK, replace FTC Module.

B316A 02

  1. Disconnect C 1 from the FTC Module.
  2. Probe C 1 pin 23 with a test lamp connected to B+. The test lamp should not illuminate.
    3. ⇒If the test lamp illuminates, repair a short to ground.
  3. Probe C 1 pin 11 with a test lamp connected to B+. The test lamp should not illuminate.
    4. ⇒If the test lamp illuminates, repair a short to ground.
  4. If circuits test OK, replace FTC Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Folding Top Control Module Replacement