B5202FS or B5252FS

B5202FS or B5252FS







- Ignition on.
- Read off Engine Coolant Temperature (ECT).

Check the Engine Coolant Temperature (ECT) reading is correct. Compare with the actual coolant temperature of the engine.

Hint: To obtain the engine temperature, read off Engine Coolant Temperature (ECT) from the engine control module (ECM).

Is the temperature reading OK?

Yes - Intermittent Fault

No - Checking Connectors