B3631

DTC B3631

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview)provides an overview of each diagnostic category.

DTC Descriptor
DTC B3631 02
- Adjustable Foot Pedal Inhibit Circuit Short to Ground

DTC B3631 05
- Adjustable Foot Pedal Inhibit Circuit Short to Battery or Open

Diagnostic Fault Information





Circuit/System Description

The adjustable pedal system will be disabled by the adjustable pedal module anytime the transmission selector lever is not in the park position while the ignition is on. While the system is being disabled, the body control module (BCM) supplies battery voltage to the adjustable pedal module through the adjustable pedal inhibit signal circuit.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

B3631 02

The BCM detects a short to battery or open in the adjustable pedal inhibit signal circuit when the output is active.

B3631 05

The BCM detects a short to ground in the adjustable pedal inhibit signal circuit when the output is inactive.

Action Taken When the DTC Sets

The output will be disabled during the current ignition cycle.

Conditions for Clearing the DTC

* The conditions for setting the DTC are no longer present.
* A history DTC clears after 100 fault free ignition cycles.

Reference Information
Schematic Reference

Adjustable Pedal Schematics ([1][2]Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Adjustable Pedals Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning)for scan tool information

Circuit/System Verification

Ignition ON, transmission in reverse, attempt to operate the adjustable pedals. The adjustable pedals should be disabled.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the adjustable pedal module.
2. Ignition ON, verify that a test lamp does not illuminate between the adjustable pedal inhibit signal circuit terminal G and ground.

• If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal replace the BCM.

3. Transmission in reverse, verify that a test lamp illuminates between the adjustable pedal inhibit signal circuit terminal G and ground.

• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the BCM.

4. If all circuits test normal, replace the adjustable pedal module.

Repair Instructions

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

* Adjustable Pedal Module Replacement
* Control Module References (Programming and Relearning)for BCM replacement, setup, and programming.