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Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1183 (Variable Effort Steering System) >> Diagnostic Information and Procedures >> DTC C1241: Variable Effort Steering Malfunction >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The Variable Effort Steering (VES) system uses the Electronic Brake Control Module (EBCM) to control current to a bi-directional electromagnetic rotary actuator. The EBCM commands current from negative two amps to positive three amps to the actuator. At low speeds, a negative current is commanded, which assists steering. At medium speeds, no current is commanded and steering is assisted by hydraulics only. At high speeds, a positive current is commanded, which creates steering resistance.

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