All Exterior Lights Do Not Flash, But Work Normally: Cherokee

Turn ignition switch to RUN position and then OFF. Check if flash to pass switch operates properly (lightly pull and release turn signal lever). If flash to pass feature works properly (headlights come on and remain on until lever is release), go to next step. If flash to pass feature does not work properly, check for blown fuse. Replace fuse and retest system.
Check for battery voltage at Pink/Light Green wire at terminal No. 21 of security alarm module. Security alarm module is located on driver's side of A/C-heater housing. If battery voltage is present, replace security alarm module and retest system. If battery voltage is NOT present, repair wiring harness and retest system.