GM Service Manual Online
For 1990-2009 cars only

Diagnostic Instructions

    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    •  Strategy Based Diagnosis
    •  Diagnostic Procedure Instructions

DTC Descriptor

DTC B0005 00: In Park Signal Circuit

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Park enable signal circuit

B0005

1

1

--

1. Will cause symptom related to SEO device.

Circuit/System Description

The park enable signal circuit is a voltage output from the body control module (BCM) only when the vehicle is not in the PARK position. This circuit is for the control of SEO devices.

Conditions for Running the DTC

    • The system voltage is between 9-16 volts.
    • The DTC can only set when the output is actively being requested by the module.

Conditions for Setting the DTC

The DTC will set only when the module requests the output and there is a short to ground.

Action Taken When the DTC Sets

The module output driver will be shut down and not supply voltage to the circuit.

Conditions for Clearing the DTC

    • The current DTC will clear when the module request for the output is removed or the malfunction is no longer present.
    • A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.

Reference Information

Schematic Reference

Body Control System Schematics

Connector End View Reference

Computer/Integrating Systems Connector End Views

Electrical Information Reference

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

Circuit/System Testing

  1. Connect a test lamp between the park enable signal circuit and battery positive voltage.
  2. Ignition ON, place the transmission in the PARK position. The test lamp should not illuminate.
  3. If the test lamp does illuminate, test for a short to ground on the park enable signal circuit. If the circuit tests normal and the DTC is current, replace the BCM.
  4. If the circuit tests normal and the DTC is current, test or replace the SEO device.

Repair Instructions

Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for module replacement, setup, and programming.