Heater Air Blower
Measuring the motor speed and the fuel delivery quantity can only be done by measuring the current.
Remove 16 Amp main fuse. Open footwell outlets and pull heater flap lever fully back.
Disconnect cables from heater air blower. Connect ammeter and battery as shown.
For a 12 Volt battery the current input is 6.5 to 7 Amps. Deviations in readings are due to defects in the heater air blower.