Flash Code Test
NOTE:
Use this test to quickly identify a short to ground in door lock cylinder switches, hood switch, ignition lock anti-theft switch or associated circuits.
- Turn ignition switch to ACCESSORY position check THEFT indicator lamp. If lamp lights steadily for 10 seconds, check ignition lock anti-theft switch and circuit No. 936 (Dark Green/White wire). If lamp operates normally, go to next step.
- Activate power door unlock button 5 times within 10 seconds. Count number of flashes of the anti-theft warning indicator lamp. If there is only one flash, system is normal, go to SYMPTOM TEST DIRECTORY table. If there are 2 flashes displayed, go to next step. If there are 3 flashes displayed, go to step 4). If there are 4 flashes displayed, go to step 5).
- Two flashes indicate door lock cylinder switch input shorted. Repair or replace door lock cylinder switches and circuit. Go to TEST A.
- Three flashes indicate hood anti-theft switch and/or liftgate lock cylinder switch input shorted. Repair or replace hood anti-theft switch and/or liftgate lock cylinder switch and circuit. Go to TEST H.
- Four flashes indicate door lock cylinder switch, hood anti-theft switch and/or liftgate lock cylinder switch input shorted. Repair or replace door lock cylinder switch, hood anti-theft switch and/or liftgate lock cylinder switch and related circuits. Go to TEST A.
SYMPTOM TEST DIRECTORY
| Symptom | Test |
|---|---|
| System Does Not Arm Or Disarm Properly | A |
| System Does Not Activate Properly | B |
| System Does Not Disarm Properly | C |
| Engine Will Not Crank | D |
| Alarm Indicator Light Is Always On | E |
| Alarm Indicator Light Does Not Work | F |
| Horn, Headlights & Parking Lights Always On | G |
| System Activates False Alarms | H |