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Honda Fit/Jazz - DTC Troubleshooting: P0118 (6) (With ETCS)

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DTC Troubleshooting: P0118 (6)

DTC P0118: ECT Sensor Circuit High Voltage


1.Turn the ignition switch ON (II).

2.Check the ECT SENSOR in the DATA LIST with the HDS.

Is about -40°C (-40°F) or less, or 4.87 V or higher indicated?


YES - Go to Connect the ECM test harness and the test pin box between the ECM and connector.

14.Measure voltage between test pin box terminal No. 81 and body ground.

Is there about 5 V?


YES - Repair open in the wire between the ECM connector No. 3 terminal No. 52 (test pin box terminal No. 81) and the ECT sensor, then go to Do the ETCS learn procedure.

21.Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are any Temporary DTCs or DTCs indicated?


YES - If DTC P0118 is indicated, check for poor connections or loose terminals at the ECT sensor and the ECM, then go to Substitute a known-good ECM.

23.Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are any Temporary DTCs or DTCs indicated?


YES - If DTC P0118 is indicated, check for poor connections or loose terminals at the ECT sensor and the ECM, then go to Replace the original ECM.n

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