DTC P1309 [AJ (3.0L Duratec)]


id0102a4824700

DTC P1309

MIsfire monitor disabled

DETECTION CONDITION

• Incomprehensible signals from CMP sensor.

POSSIBLE CAUSE

• CMP sensor malfunction
• CKP sensor malfunction
• ECT sensor malfunction
• MAF sensor malfunction
• 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
VERIFY OTHER DTC PRESENT
• Is DTC P0102, P0103, P0117, P0118, P0320, or P0340?
Yes
Go to applicable DTC inspection.
No
Go to next step.
4
INSPECT CMP SENSOR INSTALLATION
• Inspect the CMP sensor installation.
• Is there any malfunction?
Yes
Install the CMP sensor, then go to next step.
No
Go to next step.
5
VERIFY TROUBLESHOOTING OF DTC P1309 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from memory using WDS or equivalent.
• Start engine.
• Is same DTC present?
Yes
Replace PCM, then go to next step.
No
Go to next step.
6
VERIFY AFTER SERVICE PRECAUTION
• Perform "AFTER SERVICE PRECAUTION".
• Is there any DTC present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.