Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Electronic Control System
PCM monitors transaxle operation. PCM contains an electronic control system which stores a Diagnostic Trouble Code (DTC) if a transaxle electronic control system failure or problem exists. If DTC is stored, PCM flashes "D4" indicator light on A/T gear position indicator on instrument panel. If a transaxle electronic control system failure or problem is suspected and "D4" indicator light on A/T gear position indicator does not flash, perform diagnostic circuit check to ensure proper operation of "D4" indicator light. DTC can be retrieved using scan tool connected to Data Link Connector (DLC) located behind ashtray. Flash code may also be retrieved for diagnosing transaxle electronic control system, using the "D4" indicator light.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.