B3631

DTC B3631

Diagnostic Instructions

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

DTC Descriptor

DTC B3631 00
- Adjustable Foot Pedal Inhibit Circuit

Diagnostic Fault Information






Circuit/System Description

Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. The park enable relay is controlled by the body control module (BCM) through a high side drive control circuit and will be energized whenever the ignition is in the accessory, run, or crank positions and the transmission is in reverse or the cruise control is engaged.

Conditions for Running the DTC

* The ignition is ON.
* The BCM attempts to energize the park enable relay.

Conditions for Setting the DTC

The BCM detects a short to ground on the park enable relay control circuit while attempting to activate the output.

Action Taken When the DTC Sets

The output will be disabled.

Conditions for Clearing the DTC

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

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 X2 harness connector at the left IP junction block.
2. Ignition ON, transmission in reverse, verify that a test lamp illuminates between the park enable relay control circuit terminal E3 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.

3. If all circuits test normal, replace the left IP junction block.

Repair Instructions

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

* Instrument Panel Electrical Center or Junction Block Replacement - Left Side