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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 629 (Electronic Suspension System - Real Time Damping (RTD)) >> Diagnostic Information and Procedures >> DTC C0575 , C0580, C0585, or C0590: Suspension Damper Solenoid Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 GMC Yukon. However, it is still accessible from the selected car via links, so may be relevant.

The suspension damper solenoid is driven ON and OFF by the Electronic Suspension Control (ESC) module. To activate the suspension damper solenoid it is initially subjected to full battery voltage for a short period of time. Once the suspension damper solenoid is pulled-in the supply voltage is pulse width modulated (PWM). The amount the suspension damper solenoid valve is activated is based on inputs from the driver Tow/Haul Switch, road inputs, position sensor inputs and the Powertrain Control Module (PCM).

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