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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 996 (Rear Wheel Steering System) >> Diagnostic Information and Procedures >> DTC C0000: Vehicle Speed Information Circuit Malfunction >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 3:  Tests whether the condition is module, system, or condition related.
  2. 4:  Tests whether the condition has been corrected or identified as specified in the supporting text.
  3. 5:  Test for an open or short in the vehicle speed signal circuit of the rear wheel steering control module.
DTC C0000

Step Action Yes No
Schematic Reference: Rear Wheel Steering Schematics 
Connector End View Reference:  Rear Wheel Steering Connector End Views  
1 Did you perform the Diagnostic System Check-Rear Wheel Steering? Go to Step 2  Go to Diagnostic System Check - Rear Wheel Steering 
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, monitor the DTC Information for DTC C0000 in the rear wheel steering control module.
Does the scan tool indicate that DTC C0000 is current?		 Go to Step 3  Go to Step 4 
3  With a scan tool, monitor the DTC Information for DTC P0608 in the IPC.
Does the scan tool indicate that DTC P0608 is current?		 You must repair this DTC first. Go to DTC P0608 Go to Diagnostic Aids
4 
  1. Use the scan tool in order to clear the DTCs.
    2. IMPORTANT: Do not cycle the ignition.
  2. Operate the vehicle within normal operating conditions.
Does the DTC reset?		 Go to Step 5  System OK
5  Test the vehicle speed signal circuit of the rear wheel steering control module for a short to ground, short to voltage or an open between PCM and the rear wheel steering control module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 8  Go to Step 6 
6 Inspect for poor connections at the rear wheel steering control module harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs
Did you find and correct the condition?		 Go to Step 8  Go to Step 7 
7
IMPORTANT: Perform the Learn Alignment procedure.
Replace the rear wheel steering module. Refer to Rear Wheel Steering Control Module Replacement .Did you complete the replacement?		 Go to Step 8  -
8
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within normal operating conditions.
Does the DTC reset?		 Go to Step 2  System OK
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