## DTC Troubleshooting: P1886 (35-1)

DTC P1886: | Problem in CVT Driven Pulley Speed Sensor Circuit

NOTE: Record all freeze data before you troubleshoot.

1. | Check whether the DTC for manifold absolute pressure (MAP) sensor is indicated. Is the DTC for MAP sensor indicated? YES - Perform the MAP sensor troubleshooting, and recheck for DTC P1886 after troubleshooting. NO - Go to 2.

2. | Turn the ignition switch OFF.

3. | Check for continuity between PCM connector terminal A23 and body ground, and between terminal A24 and body ground. Are there continuity? YES - Go to 4. NO - Repair open in the wire PCM connector terminals A23 and A24, and ground (G101), or repair poor ground (G101).n

4. | Disconnect CVT driven pulley speed sensor connector.

5. | Turn the ignition switch ON (II).

6. | Measure the voltage between CVT driven pulley speed sensor connector terminal No. 1 and body ground. Is there about 5 V? YES - Go to 7. NO - Go to 20.

7. | Turn the ignition switch OFF.

8. | Disconnect the battery negative terminal.

9. | Disconnect PCM connector C (22P).

10. | Check for continuity between CVT driven pulley speed sensor connector terminal No. 2 and body ground. Is there continuity? YES - Repair short to ground in the wire between PCM connector C15 and the CVT driven pulley speed sensor connector.n NO - Go to 11.

11. | Check for continuity between CVT driven pulley speed sensor connector terminal No. 3 and body ground. Is there continuity? YES - Go to 12. NO - Repair open in the wire between the CVT driven pulley speed sensor connector terminal No. 3 and ground (G101), or repair poor ground (G101).n

12. | Reconnect PCM connector C (22P), then reconnect the battery negative terminal.

13. | Turn the ignition switch ON (II).

14. | Measure the voltage between CVT driven pulley speed sensor connector terminals No. 2 and No. 3. Is there about 5 V? YES - Go to 15. NO - Go to 25.

15. | Connect CVT driven pulley speed sensor connector.

16. | Measure the voltage between PCM connector terminals C15 and A23 or A24. Is there about 0 V or 5 V? YES - Go to 17. NO - Replace the CVT driven pulley speed sensor.n

17. | Shift to [P] position.

18. | Start the engine, and let it idle.

19. | With engine idling, measure the voltage between PCM connector terminals C15 and A23 or A24. Is there 1.5-3.5 V? YES - Check for loose terminal fit in the PCM connectors. If necessary, substitute a known-good PCM and recheck.n NO - Replace the CVT driven pulley speed sensor.n

20. | Measure the voltage between PCM connector terminals A21 and A23 or A24. Is there 4.75-5.25 V? YES - Repair open in the wire between PCM connector terminal A21 and the CVT driven pulley speed sensor connector.n NO - Go to 21.

21. | Turn the ignition switch OFF.

22. | Disconnect the battery negative terminal.

23. | Disconnect PCM connector A (31P).

24. | Check for continuity between PCM connector terminal A21 and body ground. Is there continuity? YES - Repair short to ground in the wire between PCM connector terminal A21 and the CVT driven pulley speed sensor connector.n NO - Check for loose terminal fit in the PCM connectors. If necessary, substitute a known-good PCM and recheck.n

25. | Measure the voltage between PCM connector terminals C15 and A23 or A24. Is there about 5 V? YES - Repair open in the wire between PCM connector terminal C15 and the CVT driven pulley speed sensor connector.n NO - Check for loose terminal fit in the PCM connectors. If necessary, substitute a known-good PCM and recheck.n