P0385
DTC P0385: CKP Sensor B No SignalNOTE: information marked with an asterisk (*) applies to the 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 PCM.
5. Turn the ignition switch OFF.
6. Disconnect 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 the 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/Band G101 (G102)*, then go to step 19.
11. Turn the ignition switch OFF.
12. Jump the SCS line with the HDS.
13. Disconnect PCM connector B (44P).
14. Check for continuity between PCM connector terminal B24 (B41)* and CKP sensor A/B 6P connector No.5/No.2*.
Is there continuity?
YES - Go to step 15.
NO - Repair open in the wire between the PCM (B24 (B41)* and the CKP sensor A/B, then go to step 18.
15. Check for continuity between PCM connector terminal B24 (B41)* and body ground.
Is there continuity?
YES - Repair short in the wire between the PCM (B24 (B41)* and the 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 PCM with the HDS.
20. Clear the CKP pattern with the HDS.
21. Do the 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 the CKP sensor A/B and the 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 PCM if it does not have the latest software, or substitute a known-good 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 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 PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.