volvo Workshop Repair Guides

Volvo Workshop Service and Repair Manuals

Fuel Injection|Page 5711 > < Diagram Information and Instructions|Page 5708
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Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
Fuel Injection

TESTING PROCEDURE:

NOTE: Check that coolant temperature and knock sensor connectors at engine block are not interchanged.

While trouble shooting, always check the wiring, fuses and connectors for good condition and routing. Use the wiring diagrams found in 
SCHEMATIC DIAGRAMS to supplement your testing efforts.

Color Code Legend

Checking ECU Ground Connections

1.

Turn ignition OFF.

2.

Access fuel injection ECU by removing the passenger side kick panel and glove compartment.

3.

Check fuel injection ECU ground connections. They should make good contact and fit tight.

Removing ECU Connector

4.

Remove fuse #1 (located in central electric unit behind ash tray) to interrupt the power supply. Then remove the ECU connector by pressing up the
latch and folding out the wire cluster.

Fuel Injection|Page 5711 > < Diagram Information and Instructions|Page 5708