Circuit 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 rear wheel steering control module monitors the rear wheel steering mode select switch 5-volt reference circuit for out of range voltage conditions. When the mode select switch button is depressed the switch is in the active state. When the mode select switch is released the switch is in the inactive state. The following conditions will help determine if there is a malfunctioning rear wheel steering mode select switch:
- The resistance of the load in the active state is 500 ohms with an additional 1,000 ohms pull-up resistor.
- The resistance of the load in the inactive state is 2,000 ohms with an additional 1,000 ohms pull-up resistor.
- The pull-up voltage is 12 volts.