PGM-FI System

DTC Troubleshooting: P0344 (PGM-FI System)

DTC P0344: CMP Sensor Circuit Intermittent Interruption

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Test-drive the vehicle for 10 minutes in the range of these recorded freeze data parameters:
- ENGINE SPEED

- VSS

4. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0344 indicated?
YES - Go to step 5.

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


5. Check for poor or loose connections at these connectors and terminals:
- CMP sensor

- PCM

- Engine ground

- Body ground

Are the connections OK?
YES - Go to step 6.

NO - Reconnect or repair the connectors or terminals, then go to step 9.


6. Check for damage to the CMP sensor pulse projection on the front camshaft pulley. Service and Repair

Is there damage?
YES - Replace the front camshaft pulley, Service and Repair then go to step 9.

NO - Go to step 7.


7. Turn the ignition switch to LOCK (0).

8. Replace the CMP sensor. Service and Repair

9. Turn the ignition switch to ON (II).

10. Reset the PCM with the HDS.

11. Clear the CKP pattern with the HDS.

12. Do the PCM idle learn procedure. PCM Idle Learn Procedure

13. Do the CKP pattern learn procedure. Initial Inspection and Diagnostic Overview

14. Test-drive the vehicle for 10 minutes in the range of these recorded freeze data parameters:
- ENGINE SPEED

- VSS

15. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0344 indicated?
YES - Check for poor connections or loose terminals at the CMP sensor and the PCM, then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.