DTC Troubleshooting: P134B
DTC P134B: Crankshaft Signal Diagnose
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P134B Crankshaft Signal Diagnose
    

1.
Problem verification (idling):

Problem verification (idling)
?1.
Record all the on-board snapshots with the HDS.

?2.
Turn the vehicle to the ON mode.

?3.
Clear the DTC with the HDS.


?4.
Start the engine, and let it idle for 10 seconds.

?5.
Monitor the OBD STATUS for DTC P134B in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P134B Crankshaft Signal Diagnose
  

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):

Problem verification (test-drive)
?1.
Test-drive the vehicle for several minutes in the range of these on-board snapshot parameters recorded in step 1-1:
ENGINE SPEED
VEHICLE SPEED

?2.
Monitor the OBD STATUS for DTC P134B in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P134B Crankshaft Signal Diagnose
  

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 the CKP sensor 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.
CKP sensor circuit connectors and terminals condition check:

CKP sensor circuit connectors and terminals condition check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check for poor connections or loose terminals at these locations:
CKP sensor
PCM
Engine ground
Body ground

Are the connections and terminals OK?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
Repair the connections or terminals.?
4.
CKP pulse plate visual check:

CKP pulse plate visual check
?1.
Remove the CKP sensor, and check for damage to the CKP pulse plate.

Is the pulse plate damaged?

     
YES
     
     
     
     
NO
     
     
     
Go to step 5.
5.
CKP sensor check:

CKP sensor check
?1.
Substitute a known-good CKP sensor.

?2.
Reconnect all connectors.

?3.
Clear the DTC with the HDS.


?4.
Start the engine.

?5.
Hold the engine speed 3,000 rpm without load (in neutral) until the radiator fan comes on.

?6.
Test-drive the vehicle for several minutes in the range of these on-board snapshot parameters recorded in step 1-1:
ENGINE SPEED
VEHICLE SPEED

?7.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
P134B Crankshaft Signal Diagnose
    

Is DTC P134B indicated?

     
YES
     
     
     
The CKP sensor is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If DTC P134B goes away and the PCM was substituted, replace the original PCM.?
     
NO