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6E–66 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS Engine Coolant Temperature Sensor ° C ° F Ohms Temperature vs. Resistance Values (approximate) 25 77 2796 15 59 4450 DTC P0117 – ECT Sensor Low Voltage
Step Action Value(s) Yes No 1 Was the “On-Board Diagnostic (OBD) System Check” — Go to Step 2 Go to OBD System Check 2 1. Ignition “ON,” engine “OFF.” Is the “Eng Cool Temp” below the specified value? 139 ° C (282 ° F) Go to Step 4 Go to Step 3 3 1. Ignition “ON,” engine “OFF.” conditions as noted. 4. Using a Tech 2, monitor “ DTC” info for DTC P0117. Does the Tech 2 indicate DTC P0117 failed this — Go to Step 4 Refer to Diagnostic Aids 4 1. Disconnect the ECT sensor electrical connector. Is the “Eng Cool Temp” at the specified value? –39 ° C (–38 ° F) Go to Step 6 Go to Step 5 5 1. Ignition “OFF.” circuit for a short to ground or a short to the sensor 3. If the ECT signal circuit is shorted. repair it as necessary. Was the ECT signal circuit shorted to ground? — Verify repair Go to Step 7 6 Replace the ECT sensor. Is the action complete? — Verify repair — 7 Replace the ECM (Refer to the Data Programming in Is the action complete? — Verify repair — |