Engine coolant temperature compensation inspection
WARNING: This page is about a different car, the 2020 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the M-MDS to the DLC-2.
- Select the following PIDs: (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)]
.)
- ECT
- IAT
- RPM
- Verify that the engine is cold, then start the engine.
- 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 No. 1 and related wiring harness (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)
- Throttle body and related wiring harness (See THROTTLE BODY INSPECTION .)