DTC P0102: MAF Sensor Circuit Low Voltage Honda Insight ZE2

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

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1. Turn the ignition switch to ON (II), and wait 2 seconds.
2. Check the MAF SENSOR in the DATA LIST with the HDS. Is about 0 gm/s, or 0.1 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 MAF sensor and the PCM.
3. Check the No. 12 IMA (10 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES -Go to step 4. NO -Repair a short in the wire between the MAF sensor and the No. 12 IMA (10 A) fuse. Also replace the No. 12 IMA (10 A) fuse, then go to step 20 .
4. Turn the ignition switch to LOCK (0).
5. Disconnect the MAF sensor/IAT sensor 5P connector.
6. Turn the ignition switch to ON (II).
7. Measure the voltage between MAF sensor/IAT sensor 5P connector terminal No. 5 and body ground. Is there battery voltage? YES -Go to step 8. NO -Repair an open in the wire between the No. 12 IMA (10 A) fuse and the MAF sensor, then go to step 20 .
8. Turn the ignition switch to LOCK (0).
9. Measure the resistance between MAF sensor/IAT sensor 5P connector terminal No. 3 and body ground. Is there 190-210 kohms? YES -Go to step 14 . NO -Go to step 10.
10. Jump the SCS line with the HDS.
11. Disconnect PCM connector B (44P).
12. Check for continuity between PCM connector terminal B30 and body ground. Is there continuity? YES -Repair a short in the wire between the PCM (B30) and the MAF sensor, then go to step 21 . NO -Go to step 13.
13. Check for continuity between MAF sensor/IAT sensor 5P connector terminal No. 3 and PCM connector terminal B30. Is there continuity? YES -Go to step 26 . NO -Repair an open in the wire between the PCM (B30) and the MAF sensor, then go to step 21 .
14. Substitute a known-good MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-360284-S17985659152010042800000) ).
15. Reconnect all connectors.
16. Turn the ignition switch to ON (II).
17. Clear the DTC with the HDS.
18. Start the engine. Hold the engine speed at 2,000 rpm without load (in P or N).
19. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0102 indicated? YES -Reinstall the original MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-360284-S17985659152010042800000) ), then go to step 27 . NO -Replace the original MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-360284-S17985659152010042800000) ), then go to step 20.
20. Turn the ignition switch to LOCK (0).
21. Reconnect all connectors.
22. Turn the ignition switch to ON (II).
23. Reset the PCM with the HDS.
24. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360285-S23715037572010042800000) ).
25. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0102 indicated? YES -Check for poor connections or loose terminals at the MAF sensor/IAT 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 DTCs troubleshooting.
26. Reconnect all connectors.
27. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360284-S30758408212010042800000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360279-S07789660702010042800000) ).
28. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0102 Indicated?

YES -Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE 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 (see PCM REPLACEMENT ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTCs troubleshooting.