ION L4-2.4L (2007)
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
Engine Coolant Temperature Sensor Replacement
Removal Procedure
Notice: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
1. Drain the cooling system. Refer to Draining and Filling Cooling System (2.0L (LSJ) Static Fill) Draining and Filling Cooling System (2.2L (L61),
2.4L (LE5) Static Fill) Draining and Filling Cooling System (GE 47716 Fill).
2. If equipped with regular production option (RPO) MN5, disconnect the engine harness electrical connector (3) from the engine coolant
temperature (ECT) sensor.
3. If equipped with RPO M86, disconnect the engine harness electrical connector (3) from the ECT sensor.
