Checking Cables, Blower Fan Starts
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.
HINT: If the blower fan operates but does not change speed when the speed selector is moved this indicates that one or more cables between the MCC control module and the fan resistor are short-circuited to supply voltage.
Check power supply between MCC control module #A1, #A2, #A3, #A5 and the fan resistor terminals 2, 6, 4, 1 for a short-circuit to supply voltage according to Short-Circuit To Ground, Permanent Faults .
Check power supply between MCC control module #A6 and the blower fan for a short-circuit to supply voltage according to Short-Circuit To Supply Voltage. Permanent Faults .
Remedy as necessary.
Other information:
- To access/replace the control module, refer to Replacing Or Adjusting Control Cables/Mechanical Rear Section And Control Panel/Front Section (Manual Climate Control/STANDARD) .
- To access/replace the blower fan resistor, refer to Replacing Blower Fan Rheostat (MCC) .
- To access/replace the blower fan, refer to Replacing Blower Fan Motor .
- To connect the breakout box, see Connection Of Breakout Box MCC .
- For information on signals, refer to Signal Descriptions MCC .
- Continue
Refer to Verification