DTC Troubleshooting

DTC Troubleshooting: P0107

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. Reading and Clearing Diagnostic Trouble Codes

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 in.Hg, 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 in.Hg, 26 mmHg), or 0.23 V or less indicated?
YES - Go to step 9.

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 13.

NO - Go to step 8.






8. Measure the voltage between PCM connector terminals C4 and C6.

Is there about 5 V?
YES - Repair open in the wire between the PCM (C6) and the MAP sensor, then go to step 15.

NO - Go to step 20.






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

10. Jump the SCS line with the HDS.

11. Disconnect PCM connector C (22P).

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

Is there continuity?
YES - Repair short in the wire between the PCM (C5) and the MAP sensor, then go to step 15.

NO - Go to step 20.






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

14. Replace the MAP sensor. Service and Repair

15. Reconnect all connectors.

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

17. Reset the PCM with the HDS.

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

19. 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.


20. Reconnect all connectors.

21. 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

22. 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, 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.