Intermittent Fault
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.
Check combustion fan electrical terminals and control module connector for contact resistance and oxidation according to Contact Resistance And Oxidation .
Check cable between control module #10 and combustion fan signal terminal (black cable from fan) for an intermittent open-circuit according to Open-Circuit, Intermittent Faults and an intermittent short-circuit to ground according to Short-Circuit To Ground, Intermittent Faults .
Check cable between control module #11 and combustion fan supply terminal (red cable from fan) for an intermittent open-circuit according to Open-Circuit, Intermittent Faults .
Remedy as necessary.
Other information:
- To access the control module/connect breakout box see Connecting the Breakout Box .
- To access the combustion fan, position heater in service mode according to Moving the Heater To Its Service Position and remove fan shroud.
- For other values, see Signal Specification Additional heater 912-D/B .
- Continue
Refer to Information
OKAY: Troubleshooting has been completed.