Checking the Connectors

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

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.
Remedy glow plug electrical terminal and control module connector for contact resistance and oxidation according to Contact Resistance And Oxidation .
Check any damage etc.
Reinstall components, reconnect connectors etc.
Ignition on.
Activate heater.
Check that the heater starts and runs.

If the heater works the cause of the fault has been loose connections in the connectors.

Other information:
- To access the control module/connect breakout box, see Connecting the Breakout Box .
- To access the glow plug, see Replacing Fuel Injection Nozzle, Fan Motor And Nozzle Pipe .
Fig 3: Identifying VCT2000
Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the heater function?

YES
OKAY: Troubleshooting has been completed.
NO
Refer to Checking Component And Cables