B0005
DTC B0005Diagnostic Instructions
^ Perform the [Diagnostic System Check - Vehicle Diagnostic Information] prior to using this diagnostic procedure.Diagnostic System Check - Vehicle Diagnostic Information
^ Review [Strategy Based Diagnosis] for an overview of the diagnostic approach.Strategy Based Diagnosis
^ [Diagnostic Procedure Instructions - Vehicle Diagnostic Information] provides an overview of each diagnostic category.Diagnostic Procedure Instructions - Vehicle Diagnostic Information
DTC Descriptor
DTC B0005 In Park Switch Signal Circuit
Diagnostic Fault Information
Circuit/System Description
The body control module (BCM) monitors the park brake switch via the park brake switch signal circuit. With the park brake applied, the switch is closed and the signal circuit is grounded. The BCM will then send a serial data message to the IPC requesting the red brake warning indicator be illuminated.
Conditions for Running the DTC
Ignition is ON
Conditions for Setting the DTC
^ Vehicle speed is greater than 5 mph (8 km/h)
^ The BCM detects the park brake switch signal is grounded
Action Taken When the DTC Sets
The red brake warning indicator is illuminated
Conditions for Clearing the DTC
^ A current DTC will clear when the condition for setting the DTC is no longer present
^ A history DTC will clear after 100 malfunction free ignition cycles
Circuit/System Verification
Observe the scan tool BCM Park Brake Switch parameter while applying and releasing the park brake. The parameter should cycle between Applied and Release.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the park brake switch.
2. Ignition ON, verify the scan tool BCM Park Brake Switch parameter is Released.
If not the specified value, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the BCM.
3. Install a 3A fused jumper wire between the signal circuit terminal A and ground. Verify the scan tool BCM Park Brake Switch parameter is Applied.
If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
4. If all circuits test normal, test or replace the park brake switch.
Repair Instructions
Perform the [Diagnostic Repair Verification - Vehicle Diagnostic Information] after completing the diagnostic procedure.Diagnostic Repair Verification - Vehicle Diagnostic Information
^ [Park Brake Warning Lamp Switch Replacement]
^ [Control Module References] for BCM replacement, setup, and programming.Programming and Relearning