GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2002 🢒 VUE - FWD 🢒 Steering 🢒 Power Steering System 🢒 DTC C0000

Circuit Description

The Power Steering Control Module (PSCM) receives a vehicle speed message from the Transmission Control Module (TCM) w/auto trans, or Engine Control Module (ECM), w/manual trans, via a class 2 serial data circuit. The PSCM uses this vehicle speed message, and other inputs, to determine the desired amount of steering assist.

Conditions for Running the DTC
    • The ignition is ON.
    • DTC U1300, or U1301 are not set.
    • Vehicle speed is greater than 8.1 km/h (5 mph).

Conditions for Setting the DTC

The PSCM receives an invalid, or no vehicle speed message from the ECM.

Action Taken When the DTC Sets
    • DTC C0000 is stored in memory.
    • The IPC displays the SERVICE VEHICLE SOON warning indicator.
    • Steering assist level defaults to 120 km/h (74.5 mph) vehicle speed level of assist.

Conditions for Clearing the DTC
    • A current DTC will clear on the next consecutive malfunction free ignition cycle.
    • A history DTC will clear after 100 consecutive malfunction free ignition cycles.
    • Using a scan tool

Test Description

  1. tests for the presence of vehicle speed related DTCs in the control modules where the vehicle speed message originates.

Step

Action

Yes

No

Schematic Reference: Power Steering Schematics

Connector End View Reference: Power Steering Connector End Views

1

Did you perform the Power Steering System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Power Steering System

2

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, select the Engine, or Transmission Diagnostic Trouble Codes (DTC) function in Powertrain.

Does the scan tool indicate the presents of any ECM, or TCM DTCs?

Go to Diagnostic Trouble Code (DTC) List/Type in Automatic Transaxle AF33-5, or to Diagnostic Trouble Code (DTC) List/Type in Automatic Transmission VT25-E, or to Diagnostic Trouble Code (DTC) List/Type in Manual Transmission

Go to Step 3

3
  1. Use the scan tool in order to clear the EPS DTCs
  2. Operate the vehicle within the conditions for running the DTC.

Does the DTC reset?

Go to Step 2

System OK