DTC Troubleshooting

DTC Troubleshooting: P0335, P0385

DTC P0335: CKP Sensor A No Signal

DTC P0385: CKP Sensor B No Signal

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Reading and Clearing Diagnostic Trouble Codes

- Information marked with an asterisk (*) applies to CKP sensor B.

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

2. Clear the DTC with the HDS.

3. Start the engine.

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

Is DTC P0335 and/or P0385 indicated?
YES - Go to step 5.

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


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

6. Disconnect CKP sensor A/B 6P connector. Service and Repair

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

8. Measure the voltage between CKP sensor A/B 6P connector terminal No. 6 (No. 3)* and body ground.

Is there battery voltage?
YES - Go to step 9.

NO - Repair open in the wire between CKP sensor A/B and PGM-FI main relay 1 (FI MAIN), then go to step 18.






9. Measure the voltage between CKP sensor A/B 6P connector terminal No. 5 (No. 2)* and body ground.

Is there about 5 V?
YES - Go to step 10.

NO - Go to step 11.






10. Measure the voltage between CKP sensor A/B 6P connector terminals No. 4 (No. 1)* and No. 6 (No. 3)*.

Is there battery voltage?
YES - Go to step 16.

NO - Repair open in the wire between CKP sensor A/B and G101, then go to step 18.






11. Measure the voltage between PCM connector terminal B17 (B1)* and body ground.

Is there about 5 V?
YES - Repair open in the wire between the PCM (B17 (B1)*) and CKP sensor A/B, then go to step 18.

NO - Go to step 12.






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

13. Jump the SCS line with the HDS.

14. Disconnect PCM connector B (24P).

15. Check for continuity between PCM connector terminal B17 (B1)* and body ground.

Is there continuity?
YES - Repair short in the wire between the PCM (B17 (B1)*) and CKP sensor A/B, then go to step 18.

NO - Go to step 25.






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

17. Replace CKP sensor A/B. Service and Repair

18. Reconnect all connectors.

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

20. Reset the PCM with the HDS.

21. Clear the CKP pattern with the HDS.

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

23. Do the CKP pattern learn procedure. Reading and Clearing Diagnostic Trouble Codes

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

Is DTC P0335 and/or P0385* indicated?
YES - Check for poor connections or loose terminals at CKP sensor A/B 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.


25. Reconnect all connectors.

26. Update the PCM if it does not have the latest software, PCM Update or substitute a known-good PCM. Reading and Clearing Diagnostic Trouble Codes

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

Is DTC P0335 and/or P0385* indicated?
YES - Check for poor connections or loose terminals at CKP sensor A/B and the PCM. If the PCM was updated, substitute a known-good PCM, Reading and Clearing Diagnostic Trouble Codes then recheck. If the PCM was substituted, go to step 1.

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.