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DTC P0117 [MZR-CD (RF Turbo)]

BME010200100W28

DTC P0117 | ECT sensor circuit low input
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DETECTION CONDITION | • PCM monitors input voltage from ECT sensor while engine is running. If input voltage from ECT sensor is below 0.1 V, PCM determines ECT sensor circuit low input.
POSSIBLE CAUSE | • ECT sensor malfunction • Connector or terminal malfunction • Short to GND in wiring between ECT sensor terminal A and PCM terminal 87 • ECT sensor signal and GND circuits short each other • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | PERFORM DTC CONFIRMATION PROCEDURE • Perform "DTC Confirmation Procedure". (See DTC CONFIRMATION PROCEDURE [MZR-CD (RF Turbo)].) • Is same DTC present during KOEO or KOER self-test? | Yes | Go to next step.
No | Intermittent concern exists. Go to "Intermittent Concern Troubleshooting". (See INTERMITTENT CONCERN TROUBLESHOOTING [MZR-CD (RF Turbo)].)
2 | INSPECT POOR CONNECTION OF ECT SENSOR CONNECTOR • Turn engine switch to OFF. • Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.). • Is there any malfunction? | Yes | Repair or replace suspected terminal, go to Step 7.
No | Go to next step.
3 | CLASSIFY ECT SENSOR MALFUNCTION OR HARNESS MALFUNCTION • Turn engine switch to ON (Engine OFF). • Disconnect ECT sensor connector. • Access ECT PID using WDS or equivalent. • Is ECT PID below 0.1 V? | Yes | Go to next step.
No | Replace ECT sensor, go to Step 7. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
4 | INSPECT ECT SENSOR SIGNAL CIRCUIT FOR SHORT TO GND • Turn engine switch to OFF. • Inspect continuity between ECT sensor terminal A and body GND. • Is there continuity? | Yes | Repair or replace harness for short to GND, go to Step 7.
No | Go to next step.
5 | INSPECT ECT SENSOR CIRCUIT FOR SHORT WITH EACH OTHER • Turn engine switch to OFF. • Inspect continuity between ECT sensor terminals A and B. • Is there continuity? | Yes | Repair or replace harness for short with each other, go to Step 7.
No | Go to next step.
6 | INSPECT POOR CONNECTION OF PCM CONNECTOR • Turn engine switch to OFF. • Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.). • Is there any malfunction? | Yes | Repair or replace suspected terminal, go to next step.
No | Go to next step.
7 | VERIFY TROUBLESHOOTING OF DTC P0117 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from PCM memory using WDS or equivalent. • Perform KOEO/KOER self-test. (See KOEO/KOER SELF-TEST PROCEDURE [MZR-CD (RF Turbo)].)
• Is same DTC present?
Yes
Replace PCM, go to next step.
(See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to next step.
8 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Is there any DTC present? | Yes | Go to applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.