Diagnosis & Repair Procedure
WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
- Check for related service bulletins. Repair as necessary. Go to next step.
- Turn ignition on. Using scan tool, check for DTCs. If DTCs are present, go to appropriate DTC and repair as necessary. If DTCs are not present, repair short to ground in Brown/Yellow wire between MIL and PCM. If wire is okay, reprogram or replace PCM. On vehicles equipped with immobilizer system, reprogram ignition key identification numbers. See COMPUTER RELEARN PROCEDURES - IMPORT article in GENERAL INFORMATION.