DTC Troubleshooting
DTC P0108: MAP Sensor Circuit High VoltageNOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
1. Turn the ignition switch ON (II).
2. Check the MAP SENSOR in the DATA LIST with the HDS.
Is 160 kPa (47.1 in.Hg, 1,197 mmHg), or 4.49 V or more 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 ECM/PCM.
3. Turn the ignition switch OFF.
4. Disconnect the MAP sensor 3P connector.
5. Connect MAP sensor 3P connector terminals No. 2 and No. 3 with a jumper wire.
6. Turn the ignition switch ON (II).
7. Check the MAP SENSOR in the DATA LIST with the HDS.
Is 160 kPa (47.1 in.Hg, 1,197 mmHg), or 4.49 V or more indicated?
YES - Go to step 8.
NO - Go to step 21.
8. Turn the ignition switch OFF.
9. Remove the jumper wire from MAP sensor 3P connector.
10. Turn the ignition switch ON (II).
11. Measure 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 12.
12. Turn the ignition switch OFF.
13. Jump the SCS line with the HDS.
14. Disconnect ECM/PCM connector C (22P).
15. Connect MAP sensor 3P connector terminal No. 3 to body ground with a jumper wire.
16. Check for continuity between ECM/PCM connector terminal C4 and body ground.
Is there continuity?
YES - Go to step 29.
NO - Repair open in the wire between the ECM/PCM (C4) and the MAP sensor, then go to step 23.
17. Turn the ignition switch OFF.
18. Connect ECM/PCM connector terminals C4 and C5 with a jumper wire.
19. Turn the ignition switch ON (II).
20. Check the MAP SENSOR in the DATA LIST with the HDS.
Is 160 kPa (47.1 in.Hg, 1,197 mmHg), or 4.49 V or more indicated?
YES - Go to step 28.
NO - Repair open in the wire between the ECM/PCM (C5) and the MAP sensor, then go to step 23.
21. Turn the ignition switch OFF.
22. Replace the MAP sensor.
23. Reconnect all connectors.
24. Turn the ignition switch ON (II).
25. Reset the ECM/PCM with the HDS.
26. Do the ECM/PCM idle learn procedure.
27. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0108 indicated?
YES - Check for poor connections or loose terminals at the MAP sensor and the ECM/PCM, then go to step 1.
NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.
28. Turn the ignition switch OFF.
29. Reconnect all connectors.
30. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM.
31. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0108 indicated?
YES - Check for poor connections or loose terminals at the MAP sensor and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to step 1.
NO - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.