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 ANTI-THEFT DIAGNOSIS CHART. 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 PINPOINT 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 PINPOINT 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 PINPOINT TEST "A" .
ANTI-THEFT DIAGNOSIS CHART
| Symptom | Pinpoint 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" |