Checking Supply Circuit
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.
- Ignition off.
- Move heater to service position according to Moving the Heater To Its Service Position
.
Check circuit between control module #11 and the components which are connected to the supply circuit (water pump terminal 2, fuel pump (FP) terminal 2 and combustion fan supply terminal) for a short-circuit to supply voltage according to Short-Circuit To Supply Voltage. Permanent Faults .
Remedy as necessary.
Other information:
- To access the control module/connect breakout box, see Connecting the Breakout Box .
- To access/replace the water pump, see Replacing Water Pump .
- To access/replace fuel pump (FP), see Replacing Fuel Pump .
- To access/replace the blower fan, see Replacing Fuel Injection Nozzle, Fan Motor And Nozzle Pipe .
- With ignition on and water pump connector disconnected the voltage between the water pump terminal 1 (engine control module (ECM) side) and ground should be approximately 0 V.
- For other values, see Signal Specification Additional Heater 912-D/B .
- Continue
Refer to Verification