Section 25 (Engine Controls - Self-Diagnostics - 2.5L): Introduction
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.
CAUTION:
DO NOT crank engine before replacement PCM is programed to immobilizer system or PCM will be severely damaged. If test procedures require replacement of PCM on a vehicle equipped with immobilizer system, vehicle must be sent to authorized Mazda dealer to have replacement PCM programed.
NOTE:
Vehicle with immobilizer system can be identified by a solid urethane ignition key head.
Perform all basic diagnostic procedures in BASIC DIAGNOSTIC PROCEDURES article. If no fault is found while performing basic diagnostic procedures, proceed with self-diagnostics. If no diagnostic trouble codes or only pass codes are found during self-diagnostics, proceed to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom.