Code 1-4-4 (Fuel System Ecu Load Signal)

Turn ignition off. Disconnect ECU connector and remove protective sleeve. Connect a voltmeter between harness side of terminal No. 8 (Blue wire) ground. Turn ignition on. Reading should be approximately 0.1 volt. If reading is not 0.1 volt, check for break in wiring between ECUs or fault in fuel system ECU.