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

Turn ignition off.Connect a voltmeter between harness side of terminal No. 8 (Yellow/Brown wire on 240 Series; Yellow or Blue wire on all others) and ground. Turn ignition on. Reading should be approximately 0.1 volt. If reading is not 0.1 volt, check for break in wiring between electronic control units or fault in fuel system ECU.