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DTC P0117

id010200804000

DTC P0117 | ECT circuit low input
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DETECTION CONDITION | • The PCM monitors the ECT sensor signal at PCM terminal 2J. If the PCM detects that the ECT sensor voltage is less than 0.20 V, the PCM determines that the ECT sensor circuit has a malfunction. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • The PENDING CODE is available if the PCM detects the above malfunction condition. • The FREEZE FRAME DATA is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • ECT sensor malfunction • Connect or terminal malfunction • Short in to ground circuit between ECT sensor terminal A and PCM connector terminal 2J • Short each wiring harness ECT signal circuit and ECT ground circuit • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | PERFORM DTC CONFIRMATION PROCEDURE • Perform the DTC CONFIRMATION PROCEDURE. (See DTC CONFIRMATION PROCEDURE.) • Is the same DTC present? | Yes | Go to the next step.
No | Intermittent concern exists. Go to the iNTERMITTENT CONCERN TROUBLESHOOTING procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING.)
2 | INSPECT ECT SENSOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the ECT sensor connector. • Check for poor connection (such as damaged, pulled-out pins, and corrosion). • Is there any malfunction? | Yes | Repair or the replace terminal, then go to Step 7.
No | Go to the next step.
3 | INSPECT ECT SENSOR SIGNAL CIRCUIT FOR SHORT TO GOUND • Turn the ignition switch off. • Disconnect the PCM connector. • Check the continuity between ECT sensor terminal A (wiring harness-side) and body ground. • Is there continuity? | Yes | Repair or replace the wiring harness for short to ground, then go to Step 7.
No | Go to the next step.
4 | INSPECT ECT SENSOR CIRCUIT FOR SHORT WITH EACH OTHER • Turn the ignition switch off. • Check continuity between ECT sensor terminal A and B (wiring harness-side). • Is there continuity? | Yes | Repair or replace harness for short to each other, then go to Step 7.
No | Go to the next step.
5 | INSPECT ECT SENSOR • Inspect the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION.) • Is there any malfunction? | Yes | Replace the ECT sensor, then go to Step 7. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION.)
No | Go to the next step.
6 | INSPECT PCM FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the PCM connector. • Check for poor connection (such as damaged, pulled-out pins, and corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to the next step.
No | Go to the next step.
7 | VERIFY TROUBLESHOOTING OF DTC P0117 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using WDS or equivalent. • Perform the KOEO/KOER self-test. (See KOEO/KOER SELF-TEST.) • Is the same DTC present? | Yes | Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION.)
No | Go to the next step.
8 | VERIFY AFTER REPAIR PROCEDURE • Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE.) • Are any DTCs present? | Yes | Go to the applicable DTC troubleshooting. (See DTC TABLE.)
No | Troubleshooting completed.