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DTC P0103: MAF Sensor Circuit High Voltage Honda Crosstour I

Testing & Diagnostics 2 illustrations ~454 words

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

Scheme 332

Scheme 332: DTC P0103: MAF Sensor Circuit High Voltage
Scheme 332: DTC P0103: MAF Sensor Circuit High Voltage

Scheme 333

Scheme 333
Scheme 333
  1. Turn the ignition switch to ON (II), and wait 2 seconds.
  2. Check the MAF SENSOR in the DATA LIST with the HAS. Is about 202 GM/s, or 4.89 V or more indicated? YES -Go to next step. NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM.
  3. Turn the ignition switch to LOCK (0).
  4. Jump the SCS line with the HAS.
  5. Disconnect the MAF sensor/IAT sensor up connector.
  6. Disconnect PCM connector A (49P).
  7. Check for continuity between MAF sensor/IAT sensor up connector terminal No. 2 and PCM connector terminal A9. Is there continuity? YES -Go to next step. NO -Repair an open in the wire between the PCM (A9) and the MAF sensor/IAT sensor, then go to step 15 .
  8. Reconnect PCM connector A (49P).
  9. Connect MAF sensor/IAT sensor up connector terminals No. 2 and No. 3 with a jumper wire.
  10. Turn the ignition switch to ON (II).
  11. Clear the DTC with the HAS.
  12. Check for Pending or Confirmed DTCs with the HAS. Is DTC P0103 indicated? YES -Go to step 20 . NO -Go to next step.
  13. Turn the ignition switch to LOCK (0).
  14. Replace the MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-360080-S20771661482010042600000) (+).
  15. Reconnect all connectors.
  16. Turn the ignition switch to ON (II).
  17. Reset the PCM with the HAS.
  18. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360079-S22847966492010042600000) (+).
  19. Check for Pending or Confirmed DTCs with the HAS. Is DTC P0103 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 DTC's troubleshooting.
  20. Turn the ignition switch to LOCK (0).
  21. Reconnect all connectors.
  22. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-360080-S11980508702010042600000) (+) or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-360056-S32194616542010042600000) (+).
  23. Check for Pending or Confirmed DTCs with the HAS. Is DTC P0103 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»(ref-360056-S32194616542010042600000) (+) 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»(ref-360080-S27881728262010042600000) (+). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

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