DTC Troubleshooting

DTC Troubleshooting: P0107 (3-1)

DTC P0107:

MAP Sensor Circuit Low Voltage

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.

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

2. Check the MAP SENSOR in the DATA LIST with the HDS.

Is about 3 kPa (1.0 inHg, 26 mmHg), or 0.23 V or less indicated?

YES -

Go to step 3.

NO -

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and the PCM.�

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

4. Disconnect the MAP sensor 3P connector.

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

6. Check the MAP SENSOR in the DATA LIST with the HDS.

Is about 3 kPa (1.0 inHg, 26 mmHg), or 0.23 V or less indicated?

YES -

Go to step 13.

NO -

Go to step 7.

7. Measure the voltage between MAP sensor 3P connector terminals No. 1 and No. 3.





Is there about 5 V?

YES -

Go to step 17.

NO -

Go to step 8.

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

9. Jump the SCS line with the HDS.

10. Disconnect PCM connector B (49P).

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






12. Check for continuity between PCM connector terminal B36 and body ground.





Is there continuity?

YES -

Go to step 24.

NO -

Repair an open in the wire between the PCM(B36) and the MAP sensor, then go to step 19.

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

14. Jump the SCS line with the HDS.

15. Disconnect PCM connector B (49P).

16. Check for continuity between MAP sensor 3P connector terminal No. 2 and body ground.





Is there continuity?

YES -

Repair a short in the wire between the PCM(B35) and the MAP sensor, then go to step 19.

NO -

Go to step 24.

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

18. Replace the MAP sensor Service and Repair.

19. Reconnect all connectors.

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

21. Reset the PCM with the HDS.

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

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

Is DTC P0107 indicated?

YES -

Check for poor connections or loose terminals at the MAP sensor 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.�

24. Reconnect all connectors.

25. Update the PCM if it does not have the latest software PCM Update, or substitute a known-good PCM.

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

Is DTC P0107 indicated?

YES -

Check for poor connections or loose terminals at the MAP sensor and the PCM. If the PCM was updated, substitute a known-good PCM, 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.�