DTC p0703
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 Descriptor
Circuit/system Description
The body control module (BCM) monitors the brake pedal position sensor. When the brake pedal is applied, the BCM detects a predetermined voltage signal. The BCM sends a serial data message to the engine control module (ECM) indicating the status of the stop lamps.
Conditions for Running the DTC
Conditions for Setting the DTC
| • | The ECM receives an invalid brake pedal status serial data message from the BCM. |
| • | This diagnostic runs continuously. |
Actions Taken When the DTC Sets
| • | The cruise control system is disabled. |
| • | The malfunction indicator lamp (MIL) will not illuminate. |
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | A history DTC will clear after 40 malfunction-free ignition cycles have occurred. |
Reference Information
Schematic Reference
Cruise Control Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Cruise Control Description and Operation
Electrical Information Reference (Except Opel Gt)
| • | Testing for Intermittent Conditions and Poor Connections |
Scan Tool Reference
Control Module References for scan tool information
Circuit/system Verification
- Verify that DTC P0572 or P0573 is not set.
- Verify that DTC P0703 is not set.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Brake Pedal Position Sensor Replacement |
| • | Control Module References for BCM or ECM replacement, setup and programming |
