9-5 Aero (9600) L4-2.3L Turbo (B235) HO (2000)
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Control module power supply
+30
Pin 22 on the MCC unit is supplied with current form the +30 circuit via fuse 20.
+15
Pin 4 on the MCC unit is supplied with current from +15 via fuse 26. +15 is used to activate the control module.
Diagnostics
The fan speed cannot be regulated if there is no power supply.