## PGM-FI System

#### DTC Troubleshooting

11-56

DTC P0117: ECT Sensor Circuit Low Voltage

1. Turn the ignition switch ON (II).

1. Check the ECT with the scan tool.

   Is 150°C (302°F) or higher (or H-Limit in Honda mode of PGM Tester) or 0 V indicated?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the ECT sensor and at the ECM.

1. Disconnect the ECT sensor 2P connector.

1. Check the ECT with the scan tool.

   Is 150°C (30°F) or higher (or H-Limit in Honda mode of PGM Tester) or 0 V indicated?

YES - Go to step 5.

NO - Replace the ECT sensor.

1. Turn the ignition switch OFF.

1. Disconnect ECM connector B (24P).

1. Check for continuity between the ECT sensor 2P connector terminal No. 1 and body ground.

ECT SENSOR 2P CONNECTOR

Wire side of female terminals

Is there continuity?

YES - Repair short in the wire between the ECM (B8) and the ECT sensor.

NO - Substitute a known-good ECM and recheck (see page 11-5). If the symptom/indication goes away, replace the original ECM.

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