Short To VAPS Control Module Check
Disconnect VAPS control module connector and instrument cluster connector. Disconnect Programmed Ride Control (PRC) connector. Turn ignition on. Set VOM on 20-volt scale. Measure voltage between Green/Red wire in VAPS module connector and chassis ground. If voltage is above 6 volts, service Green/Red wire for short to VPWR (battery power). On models with analog instrument panel, if voltage is 6 volts or less, proceed to PINPOINT TEST D4 .