Checking the connector

WARNING:

Before fault-tracing can begin, the engine cooling fan (FC) connector must be disconnected to prevent the engine cooling fan (FC) engaging. Diagnostic trouble code (DTC) ECM-6110 Engine cooling fan (FC) low-speed signal may be stored. After fault-tracing the connector must be reconnected.

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Connecting Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off
Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor.
If the temperature is now within its permitted range, the fault was caused by loose connections in the connector.

Other information
- See Contents
- To access the engine coolant temperature (ECT) sensor, see Temperature sensor engine coolant, replacing .
Fig 3: Identifying Engine Coolant Temperature (ECT) Sensor Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 5: Identifying Engine Coolant Temperature (ECT) Sensor
Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the temperature within its permitted range?

YES
OKAY: Troubleshooting has been completed.
NO
Refer to Checking the wiring and component