Flash Code Test
WARNING: This page is about a different car, the 1997 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Use this test to quickly identify a short to ground in the door lock cylinder switches, hood switch, ignition lock anti-theft switch or their associated circuits.
- Turn ignition switch to ACCESSORY position and observe 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 PINPOINT 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 No. 25 (Dark Green/Purple wire).
- Three flashes indicate hood anti-theft switch and/or trunk lock cylinder switch input shorted. Repair or replace hood anti-theft switch and/or trunk lock cylinder switch and circuit No. 23 (Tan/Light Green wire).
- Four flashes indicate door lock cylinder switch, hood anti-theft switch and/or trunk lock cylinder switch input shorted. Repair or replace door lock cylinder switch, hood anti-theft switch and/or trunk lock cylinder switch and related circuits.