Troubleshooting Hints

Try the following checks before doing the System Check.

1. Check the key resistor pellet sensing contacts in the Ignition Lock Cylinder by looking into the key opening. If the contacts are damaged, replace the Lock Cylinder.

2. Check the VATS Fuse by visual inspection.

3. Check all of the owner's ignition keys using a J 35628-A VATS/PASS Interrogator. If the Key Code window shows "E," or reading is erratic, replace the owner's key.

4. Check the "SECURITY" Indicator bulb.

5. Check the ECM Fuse and the GAGES Fuse by visual inspection.

6. Check that G112 and G118 are clean and tight.

Note: When the PASS-Key Decoder Module is replaced, the new module will store the key resistance value the first time the car is started. The "SECURITY" Indicator will remain on for this first ignition cycle, and not turn off until the Ignition Switch is turned to OFF.

^ Go to System Check for a guide to normal operation.