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:
• ECT
• IAT
• RPM
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 .)
(w) RX8-Engine Troubleshooting
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