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Checking The Component

Fig 1: Identifying Ignition OFF

GLL101045

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Disconnecting Connector

GLL101071

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off
Disconnect the connector in the heater.
Measure the resistance of overheat protection thermostat terminals #C5 and #C6.

Measure the resistance of engine coolant temperature (ECT) sensor terminals #C3 and #C4.

Compare the measured resistance values with the values in the component specification.

Remedy as necessary.

Other information
- see SIGNAL SPECIFICATION
- see COMPONENT SPECIFICATION
- see FUEL FIRED BOOSTER HEATER WATER-IN-FUEL SENSOR (2005-09) and FUEL FIRED BOOSTER HEATER WATER-IN-FUEL SENSOR (B5254T3, L. H. D; 2005-07)
Fig 3: Identifying 14-Pin Connector
Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue
Refer to VERIFICATION