Test S: Anti-Theft Warning Never/Always On
- Turn ignition off. Open both front doors. If anti-theft warning light is flashing, system is okay. If anti-theft warning light is not flashing, go to next step.
- Perform ON-DEMAND SELF-TEST. See MODULE COMMUNICATIONS NETWORK article. If anti-theft indicator does not light, go to next step. If anti-theft indicator lights, see ANTI-THEFT SYSTEMS article.
- Disconnect VIC connector C255. Ensure tester is still commanding light on. Check voltage at connector terminal No. 31 (Dark Green/Light Green wire). If battery voltage is found, replace VIC and retest. If there is no voltage, go to next step.
- Backprobe lighting control module terminal No. 31 (Dark Green/Light Green wire). If voltage is 10 volts or more, repair Dark Green/Light Green wire and retest. If voltage is less than 10 volts, replace lighting control module.