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Diagnostic System Check - Variable Effort Steering

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic System Check - Variable Effort Steering

Step Action Yes No
1 Install a scan tool.
Does the scan tool power up?		 Go to Step 2  Go to Scan Tool Does Not Power Up in Data Link Communications
2
  1. Turn ON the ignition, with the engine OFF.
  2. Using the scan tool, attempt to establish communications with the Electronic Brake Control Module (EBCM).
Does the scan tool communicate with the EBCM?		 Go to Step 3  Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications
3 Select the display DTC function on the scan tool.
Does the scan tool display any ABS, TCS or VSES DTCs?		 Go to Diagnostic System Check - ABS in Antilock Brake System Go to Step 4 
4 Select the Magna Steer display DTC function on the scan tool.
Does the scan tool display DTC C1241?		 Go to DTC C1241  Go to Symptoms - Power Steering System in Power Steering System
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