Headlights Do Not Flash, But Work Normally: Cherokee
- Check (backprobe) for battery voltage at terminal No. 7 of security alarm module (Tan/Pink wire). Security alarm module is located on driver's side of A/C-heater housing. If battery voltage is present, go to next step. If battery voltage is NOT present, turn ignition switch to RUN position and then OFF. Replace security alarm module and retest system.
- Turn ignition switch to RUN position and then OFF. Disconnect security alarm module relay. Relay is taped to wiring harness, near driver's side kick panel. Check relay continuity between Black and Tan/Pink wire terminals. If continuity exists, go to next step. If no continuity exists, replace relay and retest system.
- Check continuity between relay connector and ground (Black wire). If no continuity exists, repair open Black (ground) wire and retest system. If continuity exists, check continuity of Tan/Pink wire between relay connector and terminal No. 7 of security alarm module. If no continuity exists, repair open Tan/Pink wire.