DTC P1117 [AJ (3.0L Duratec)]


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DTC P1117

ECT circuit performance problem

DETECTION CONDITION

• Indicates ECT sensor signal was intermittent.

POSSIBLE CAUSE

• ECT sensor malfunction
• Poor connection at ECT sensor or PCM connector
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to next step.
No
Record FREEZE FRAME DATA on repair order, then go to next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Check for related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to available Service Information.
• If vehicle is not repaired, go to next step.
No
Go to next step.
3
INSPECT ECT SENSOR CONNECTOR FOR POOR CONNECTION
• Turn ignition key to OFF.
• Disconnect ECT sensor connector.
• Check for poor connection (damaged, pulled-out pins, corrosion, etc.).
• Are there any malfunctions?
Yes
Repair or replace terminal, then go to Step 6.
No
Go to next step.
4
INSPECT ECTSENSOR
• Inspect ECT sensor.
• Is IAT sensor okay?
Yes
Replace ECT sensor, then go to Step 6.
No
Go to next step.
5
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Disconnect PCM connector.
• Check for poor connection (damaged, pulled-out pins, corrosion, etc.).
• Are there any malfunction?
Yes
Repair or replace terminal, then go to Step 6.
No
Go to next step.
6
VERIFY TROUBLESHOOTING OF DTC P1117 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from PCM memory using WDS or equivalent.
• Start engine and run engine under FREEZE FRAME DATA condition.
• Is PENDING CODE of same DTC present?
Yes
Replace PCM, then go to next step.
No
Go to next step.
7
VERIFY AFTER SERVICE PRECAUTION
• Perform "AFTER SERVICE PRECAUTION".
• Are any DTCs present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.