Transfer Pump Control Unit (Protege 4WD Only)
- Turn ignition on. Ensure fuel gauge reads more than half full and transfer pump operation is heard. Ground transfer pump connector terminal Yellow/Blue and verify pump stops. Remove the ground from terminal Yellow/Blue and verify pump operates after about 10 seconds. If not, see TRANSFER PUMP in this article. See Figure .
- Turn ignition on. Ground fuel pump control unit terminal "M" with jumper wire. Verify that zero volts is present at control unit terminal "N". Remove the jumper wire and check that voltage is 12 volts in about 10 seconds. If not, disconnect transfer pump connector. Turn ignition on. Verify that the voltage is 12 volts at terminal "N" of the transfer pump connector. If not, replace transfer pump control unit.