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.
Description & Operation: Notes
Vehicles use a 4-speed, fully automatic, electronically controlled transaxle with shift mode select function and self-diagnostic function.
The transaxle uses 5 electronic valves (line actuators), controlled by the Powertrain Control Module (PCM). The PCM controls all transaxle shifts, shift feel, Torque Converter Clutch (TCC) lock-up and self-diagnostics. PCM is located behind right side of dash. PCM has two 32-pin connectors and two 24-pin connectors.
If an electrical circuit or component problem occurs, MALFUNCTION INDICATOR LIGHT (MIL) may come on or start flashing. PCM will store Diagnostic Trouble Codes (DTCs) in memory. A stored DTC indicates PCM has detected a fault in engine or transaxle circuits or components.
PCM is capable of operating in 2 different modes. The differences between the 2 modes are shift points. NORMAL mode or PERFORMANCE mode may be selected using mode switch. Mode switch is located on center console.
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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.