For 1990-2009 cars only
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
DTC C1203: Throttle Control SystemCircuit/System Description
The electronic brake control module (EBCM) monitors the powertrain control module (PCM). The EBCM will prevent traction control and vehicle stability control (VSC) operation if it determines fault within the powertrain control system.
Conditions for Running the DTC
Ignition is in the ON position
Conditions for Setting the DTC
The EBCM detects a fault within the PCM data circuits to the EBCM.
Action Taken When the DTC Sets
| • | The traction control and VSC is disabled. |
| • | The VSC warning indicator turns ON. |
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Verify correct BPMV/EBCM is installed.
| ⇒ | If correct BPMV/EBCM is installed, replace the ECM. |
| ⇒ | If incorrect BPMV/EBCM is installed, replace the BPMV/EBCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for EBCM replacement, setup, and programming |
