TM 10-3930-675-20-10023 00-4ENGINE FUEL PRESSURE SENSORS AND CIRCUITS TROUBLESHOOTING - CONTINUED0023 00Table 2. Error Code 1581 - Fuel Inlet Restriction Sensor Circuit Failure Troubleshooting Procedures - Continued.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONError Code 1581 - Fuel Inlet Restriction SensorCircuit Failure - Continued2. Install breakout cable P/N3824775 between sensor andharness connector. Placeignition switch in ONposition.3. Measure supply voltage at pin1 or A (red) and pin 2 or B(black). Voltage should be4.75-5.25V.a. If voltage is as specified,repair or replace connectors(WP 0111 00).b. If engine harness requiresreplacement, notify SRA.c. If voltage is not as specified,replace engine ECU (WP0078 00).4. Disconnect actuator harnessconnector from engine ECU.Turn ignition switch to ONposition and measure voltagefrom engine ECU pin 29 topin 27 at actuator port ofECU. Voltage should be 4.75-5.25V.a. If voltage is as specified,repair or replace connectors(WP 0111 00).b. If engine harness requiresreplacement, notify SRA.c. If voltage is not as specified,replace engine ECU (WP0078 00).4.75-5.25V
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