Vacuum Control Valve Electrical Circuit Functional Test
- Before starting engine, disconnect bead chain or cable at servo, and disconnect vacuum hose between control valve and solenoid valve at servo. Connect jumper wire between ground and cavity "A" on rear of large control module wiring connector. Start and run engine at idle.
- Amber "ON" light on dash switch should be on. Perform tests on system as shown in Vacuum Control Valve Circuit Functional Tests chart.
- If all conditions indicated in Vacuum Control Valve Circuit Functional Test chart are okay, but system still does not operate properly, test each component separately.