Programming New Module (RPO 9C3 Or 9C6)

Theft deterrent module on RPO 9C3 and 9C6 (Police & Taxi) vehicles must remain unprogrammed. This is due to ignition key not having a resistor pellet and resistor sensing circuits being jumpered in wiring harness. To verify that module is unprogrammed, attach test light between Data Link Connector (DLC) connector terminals No. 8 (Gray wire) and No. 16 (Orange wire). Turn ignition switch to RUN position. With ignition switch in RUN position, test light should flash on and off. If test light illuminates and stay on when ignition is on, module has become programmed. To identify and repair cause for module becoming programmed, check for excessive resistance in Pink wire between theft deterrent module terminals B8 and B7.