GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2007 🢒 G6 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC B1296

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 B1296 01: Movable Roof Header Unlatched Sensor Circuit short to battery

DTC B1296 06: Movable Roof Header Unlatched Sensor Circuit short to ground or open

DTC B1296 58: Movable Roof Header Unlatched Sensor Circuit incorrect reaction after event

DTC B1296 59: Movable Roof Header Unlatched Sensor Circuit circuit/component protection time out

Circuit/System Description

S1 is the Folding Top Header Latch Cylinder Sensor. The folding top control (FTC) module uses S1 to determine if the Folding Top Header Latch Cylinder is in the latched or unlatched position. S1 is a hall effect sensor that becomes active when the cylinder is in the unlatched position.

Conditions for Running the DTC

The FTC module is active.

Conditions for Setting the DTC

A short to ground, short to voltage, or open is detected on the signal circuit of S1.

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

A weak battery may cause DTC B1296 58 or DTC B1296 59 to set.

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
  1. Disconnect S1.
  2. Probe the 12-volt reference circuit with a test lamp connected to ground. The test lamp should illuminate.
    3. ⇒If the test lamp does not illuminate, test for an open or short to ground.
    ⇒If circuit OK, replace FTC module.
  3. Connect a fuse jumper wire between the 12-volt reference circuit and the signal circuit.
  4. Use a scan tool to monitor Folding Top Header Latch Cyl. The scan tool should indicate Latched.
    5. ⇒If the scan tool does not indicate Latched, test for an open, short to ground, or short to voltage.
    ⇒If circuit OK, replace FTC module.
  5. If circuits test OK, replace S1.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Folding Top Header Latch Hydraulic Cylinder Replacement
    •  Folding Top Control Module Replacement