DTC Troubleshooting

DTC Troubleshooting: P15B0, P15C0

DTC P15B0:

CKP Sensor Signal Malfunction

DTC P15C0:

CKP Sensor Signal Intermittent Interruption

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshots, and review the general troubleshooting information Reading and Clearing Diagnostic Trouble Codes.
- If PGM-FI system's DTC P0335 and/or P0339 is stored at the same time as DTC P15B0 and/or P15C0, troubleshoot P0335 and/or P0339 first, then recheck for P15B0 and/or P15C0.

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

2. Clear the DTC with the HDS.

3. Start the engine, and let it idle 20 seconds.

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

Is DTC P15B0 and/or P15C0 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 engine mount control unit and the PCM.�

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

6. Check for poor connections or loose terminals at the engine mount control unit 16P connector and PCM connector A (49P).

Are the connections and terminals OK?

YES -

Go to step 7.

NO -

Repair the connections or terminals, then go to step 26.

7. Disconnect CKP sensor 3P connector.

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

9. Measure the voltage between engine mount control unit 16P connector terminal No. 15 and body ground.





Is there about 5 V?

YES -

Go to step 10.

NO -

Go to step 20.

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

11. Connect CKP sensor 3P connector terminal No. 1 to body ground with a jumper wire.





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

13. Measure the voltage between engine mount control unit 16P connector terminal No. 15 and body ground.





Is there about 0 V?

YES -

Replace the engine mount control unit Service and Repair. Turn the ignition switch to LOCK (0), then go to step 26.

NO -

Go to step 14.

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

15. Remove the jumper wire from the CKP sensor 3P connector.

16. Jump the SCS line with the HDS.

17. Disconnect PCM connector A (49P).

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

19. Measure the voltage between PCM connector terminal A34 and body ground.





Is there about 5 V?

YES -

Turn the ignition switch to LOCK (0), then go to step 31.

NO -

Repair open in the wire between engine mount control unit 16P connector terminal No. 15 and PCM connector terminal A34. Turn the ignition switch to LOCK (0), then go to step 26.

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

21. Disconnect engine mount control unit 16P connector.

22. Check for continuity between engine mount control unit 16P connector terminal No. 15 and body ground.





Is there continuity?

YES -

Go to step 23.

NO -

Replace the engine mount control unit Service and Repair, then go to step 26.

23. Jump the SCS line with the HDS.

24. Disconnect PCM connector A (49P).

25. Check for continuity between engine mount control unit 16P connector terminal No. 15 and body ground.





Is there continuity?

YES -

Repair short to ground in the wire between engine mount control unit 16P connector terminal No. 15 and PCM connector terminal A34, then go to step 26.

NO -

Go to step 31.

26. Reconnect all connectors.

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

28. Clear the DTC with the HDS.

29. Start the engine, and let it idle 20 seconds.

30. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P15B0 and/or P15C0 indicated?

YES -

Check for poor connections or loose terminals at the engine mount control unit and the PCM, then go to step 1.

NO -

Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.�

31. Reconnect all connectors.

32. Update the PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good PCM Initial Inspection and Diagnostic Overview.

33. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P15B0 and/or P15C0 indicated?

YES -

Check for poor connections or loose terminals at the engine mount control unit and the PCM. If the PCM was updated, substituted a known-good PCM Initial Inspection and Diagnostic Overview, and retest. If the PCM was substituted and the symptom indicated goes away, replace the original PCM Service and Repair.�

NO -

If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM Service and Repair. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.�