Mazda RX-8 Manual page 204

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Table of Contents

Drive-by-wire Control System Inspection

Engine coolant temperature compensation inspection

1. Connect the WDS or equivalent to the DLC-2.

2. Select the following PIDs:

3. Verify that the engine is cold, then start the engine.

4. Verify that the engine speed decreases as the engine warms up.

If the engine speed does not decrease or decreases slowly, inspect the following:

ECT sensor and related wiring harness

(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)

Throttle body and related wiring harness

(See THROTTLE BODY INSPECTION .)

RX8-Engine Troubleshooting

Troubleshooting