Engine - Coolant Temperature Sensor/Switch: Diagrams

Engine Coolant Temperature Sensor, Connector Assignment

Special tools, testers and auxiliary items required

• Assembly Tool (T10118)

Procedure

- Disconnect electrical harness connector at engine coolant temperature sensor (G62); procedure:

• Vehicles with 3.2L FSI engines, refer to => [ Engine Coolant Temperature Sensor Connector, Disconnecting ].

• Vehicles with 3.0L TFSI engine, refer to => [ Coolant Temperature Sensor Electrical Connector, Disconnecting ].

• Vehicles with 4.2L MPI engine, refer to => [ Engine Coolant Temperature Sensor, Disconnecting Electrical Connector ].

• Vehicles with 4.2L FSI engine, refer to => [ Coolant Temperature Sensor Electrical Connector, Disconnecting ].

• Vehicles with 5.2L FSI engine, refer to => [ Coolant Temperature Sensor Electrical Connector, Disconnecting ].

Terminal assignment of the 2-pin harness connector at engine coolant temperature sensor (G62)





1. Sensor ground (GND)

2. Wire connection from engine coolant temperature sensor to engine control module

2-pin connector assignment on engine coolant temperature sensor on radiator (G83)





1. Sensor ground (GND)

2. Wiring connection from engine coolant temperature sensor on radiator to engine control module

Engine Coolant Temperature Sensor Connector, Disconnecting

Procedure

- Remove engine cover at front - arrows -.





- Disconnect electrical harness connector - 2 - at engine coolant temperature sensor (G62).





• Disregard item - 1 -.

Install in reverse order.

Coolant Temperature Sensor Electrical Connector, Disconnecting

Procedure

- Remove the engine cover - 1 -.





• Ignore item - 2 -.

- Disconnect the - 1 - engine coolant temperature sensor (G62) connector.





• Ignore - 2 - and the - arrow -.

Install in reverse order.

Engine Coolant Temperature Sensor, Disconnecting Electrical Connector

Procedure

- Remove rear engine cover - arrows -.





- Disconnect electrical harness connector - 1 - at engine coolant temperature sensor (G62) using assembly tool (T10118).





• For the sake of illustration, depicted without engine.

• Disregard item - 2 -.

Install in reverse order.

Coolant Temperature Sensor Electrical Connector, Disconnecting

Procedure

- Remove rear engine cover - arrows -.





- Lay aside fuel line and line to EVAP canister at air guide pipe.





- Remove air guide hose from air filter housing, to do so loosen hose clamp - 4 and 5 -.

- Lay aside air guide hose with wires - 2 and 3 - connected.

• Disregard - 1 and arrows -.

- Disconnect electrical harness connector - arrow - at engine coolant temperature sensor (G62).





• For the sake of illustration, depicted without engine.

Install in reverse order.

Coolant Temperature Sensor Electrical Connector, Disconnecting

Procedure

- Remove front - 1 - and rear - 2 - engine cover - arrows -.





- Remove left air guide hose - arrows -.





- Remove right air guide hose - arrows -.





- Disconnect vacuum hose - 1 - from intake manifold.





- Remove the bolts - arrows - and remove air guide.

- Disconnect electrical harness connector - 1 - at engine coolant temperature sensor (G62).





• Ignore - 2 - and - 3 -.

Install in reverse order.