P0385
DTC P0385: CKP Sensor B No SignalNOTE: Information marked with an asterisk (*) applies to CKP sensor B.
1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Start the engine.
4. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0335 and/or P0385 indicated?
YES - Go to step 5.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at CKP sensor A/B and the ECM/PCM.
5. Turn the ignition switch OFF.
6. Disconnect the CKP sensor A/B 6P connector.
7. Turn the ignition switch ON (II).
8. Measure 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 19.
9. Measure 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 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 19.
11. Measure voltage between ECM/PCM connector terminal D13 (D1)* and body ground.
Is there about 5 V?
YES - Repair open in the wire between the ECM/PCM (D13 (D1 )*) and CKP sensor A/B, then go to step 19.
NO - Go to step 12.
12. Turn the ignition switch OFF.
13. Jump the SCS line with the HDS.
14. Disconnect ECM/PCM connector D (17P).
15. Check for continuity between ECM/PCM connector terminal D13 (D1)* and body ground.
Is there continuity?
YES - Repair short in the wire between the ECM/PCM (D13 (D1)*) and CKP sensor A/B, then go to step 18.
NO - Go to step 24.
16. Turn the ignition switch OFF.
17. Replace CKP sensor A/B.
18. Turn the ignition switch ON (II).
19. Reset the ECM/PCM with the HDS.
20. Clear the CKP pattern with the HDS.
21. Do the ECM/PCM idle learn procedure.
22. Do the CKP pattern learn procedure.
23. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0335 and/or P0385* is indicated, check for poor connections or loose terminals at CKP sensor A/B and the ECM/PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - Troubleshooting is complete.
24. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM.
25. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0335 and/or P0385* is indicated, check for poor connections or loose terminals at CKP sensor A/B and the ECM/PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM.