Normal Operation

The speed control deactivator switch interrupts the power signal to the PCM through circuit CES09 (VT/OG) when the brake pedal is applied firmly and passes the speed control deactivator switch trip point. This is a redundant signal to the PCM.

• DTC P1703 (Brake Switch Out Of Self Test Range) - sets when there is an open or short in the deactivator switch circuits or when there is an open or short in the stoplamp circuits.

This pinpoint test is intended to diagnose the following: 

• Fuse
• Stoplamp system concern
• Wiring, terminals or connectors
• Speed control deactivator switch
• PCM