Diesel Data: Automotive Repair

P0339

DTC P0339: CKP Sensor Circuit Intermittent Interruption

NOTE:
- Information marked with a double asterisk (**) applies to 2004-2005 models.

1. Reset the ECM with the HDS.
2. Start the engine.
3. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0335, and/or (P0339)** indicated?

YES - Go to step 4.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the CKP sensor and the ECM.

4. Turn the ignition switch OFF.




5. Disconnect the CKP sensor 2P connector, and at the sensor side, measure resistance between CKP sensor 2P connector terminals No.1 and No.2.

Is there 1,850 - 2,450 ohm?

YES - Go to step 6.

NO - Replace the CKP sensor.




6. At the sensor side, check for continuity between CKP sensor 2P connector terminal No.1 and body ground and terminal No.2 and body ground individually.

Is there continuity?

YES - Replace the CKP sensor.

NO - Go to step 7.

7. Reconnect the CKP sensor 2P connector.




8. Disconnect ECM connector C (31P), and measure resistance between ECM connector terminals C8 and C9.

Is there 1,850 - 2,450 ohm?

YES - Go to step 9.

NO - Repair open in the wire between the ECM (C8, C9) and the CKP sensor.




9. Check for continuity between ECM connector terminal C8 and body ground.

Is there continuity ?

YES - Repair short in the wire between ECM terminal C8 and the CKP sensor.

NO - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM.