Engine Electrical
| SENDING UNITS AND SENSORS |
The 1.2L engine is equipped with a second coolant sensor, referred to by Subaru as a Thermosensor. This sensor works in cooperation with the thermometer to control the radiator fan and delivery coolant information to the ECM.
REMOVAL & INSTALLATION
Use extreme care if removing a sender from a vehicle which has been driven recently. The coolant could be extremely hot.
The thermosensor is located to the left of the thermometer on the intake manifold.
- Disconnect the negative battery cable.
- Access the thermosensor on the intake manifold, and unfasten the wire harness attached.
- Loosen the draincock at the lower portion of the radiator, and drain enough coolant into a suitable container to bring the level below the thermosensor.
- Loosen and remove the thermosensor. Inspect the threads of the manifold, and use a thread chaser to restore the threads if damaged.
- If reinstalling original thermosensor, remove sealing gasket and replace with a new one.
To install:
- Position thermosensor, and new sealing gasket into hole in manifold, and hand-tighten.
- Using an appropriate socket, tighten the thermosensor to 2-3 ft. lbs. (3-4 Nm).
- Connect the wire harness to the thermosensor. Tighten the radiator draincock, if not already done.
- Connect the negative battery cable.
- Fill the cooling system with coolant and bleed.
END OF SECTION