TM 10-3930-675-20-10022 00-8ENGINE PRESSURE SENSOR TROUBLESHOOTING - CONTINUED0022 00Table 2. Error Code 1123 - Intake Manifold Pressure Sensor Circuit Failure Troubleshooting Procedures.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONError Code 1123 - Intake Manifold PressureSensor Circuit Failure1. Ensure that ignition switch isin OFF position. Disconnectengine harness from intakemanifold pressure sensor(WP 0093 00).2. Inspect engine harness andsensor connector for dirty,corroded, bent, broken,pushed back, and extendedpins.Clean and repair connector(s) asrequired (WP 0111 00).3. Check engine harness andsensor connector for dirt ormoisture in or on connectorand for missing or damagedconnector seals.Remove dirt and moisture fromconnector. Replace missing ordamaged connector seals (WP0111 00).4. Install breakout cable. Placeignition switch in ONposition. Check intakemanifold pressure sensorsupply voltage. Checkvoltage between lead A and Bof breakout cable. Voltageshould be 4.75-5.25V. If voltage is not as specified,proceed.ABC4.75-5.25V
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