DTC P0344

DTC P0344  : CMP Sensor A Circuit Intermittent Interruption

DTC (PGM-FI)

1. Problem verification (idling)

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Enter the maintenance mode, then start the engine, and let it idle for 10 seconds.

   -5. Monitor the OBD STATUS for DTC P0344 in the DTCs MENU with the HDS.

   DTC Description	OBD STATUS
   P0344 CMP Sensor A Circuit Intermittent Interruption

   OBD Status

   Does the HDS indicate FAILED?

   YES 

   The failure is duplicated. Go to step 3.

   NO 

   If the HDS indicates PASSED, go to step 2. If the HDS indicates NOT COMPLETED, keep idling until a result comes on.

2. Problem verification (test-drive):

   Test-drive the vehicle for several minutes in the range of these recorded on-board snapshot parameters:

   • ENGINE SPEED
   • VEHICLE SPEED

   On-board Snapshot

   -2. Monitor the OBD STATUS for DTC P0344 in the DTCs MENU with the HDS.

   DTC Description	OBD STATUS
   P0344 CMP Sensor A Circuit Intermittent Interruption

   OBD Status

   Does the HDS indicate FAILED?

   YES 

   The failure is duplicated. Go to step 3.

   NO 

   If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at CMP sensor A and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot . If the HDS indicates NOT COMPLETED, retest and check the OBD STATUS again.

3. CMP sensor A circuit connectors and terminals condition check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   Check for poor connections or loose terminals at these locations:

   • CMP sensor A
   • PCM
   • Engine ground
   • Body ground

   Are the connections and terminals OK?

   YES 

   Go to step 4.

   NO 

   Repair the connections or terminals.

4. CMP pulse plate A visual check

   -1. Check for damage to CMP pulse plate A .

   Is the pulse plate damaged or loose?

   YES 

   Replace CMP pulse plate A .

   NO 

   Replace CMP sensor A , then recheck. If DTC P0344 is indicated again, replace the PCM .