Checking The Component And Wiring

Fig 1: Identifying Ignition In Off Position

GLL101046

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Connectors

GLL101072

Courtesy of VOLVO CARS CORPORATION

Ignition off.
Unplug the engine temperature sensor connectors.
Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation.

Check the resistance of the sensor between #1 and #2 (to the sensor).

Remedy as necessary.

Other information
- see CONNECTING THE BREAKOUT BOX
- see SIGNAL SPECIFICATION
- see COMPONENT SPECIFICATIONS
- see ENGINE COOLANT TEMPERATURE SENSOR (ECT)
- see CHECKING WIRING AND TERMINALS
Fig 3: Identifying 2-Bit Connector
Courtesy of VOLVO CARS CORPORATION

Fig 4: Identifying Engine Coolant Temperature (ECT) Sensor
Courtesy of VOLVO CARS CORPORATION

Continue
Refer to VERIFICATION