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Home/Honda/Crosstour/Honda Crosstour I (2009-2012)/Repair manual/Testing & Diagnostics/DTC P0108: MAP Sensor Circuit High Voltage
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DTC P0108: MAP Sensor Circuit High Voltage Honda Crosstour I

Testing & Diagnostics 4 illustrations ~556 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 337

Scheme 337: DTC P0108: MAP Sensor Circuit High Voltage
Scheme 337: DTC P0108: MAP Sensor Circuit High Voltage

Scheme 338

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Scheme 340
  1. Turn the ignition switch to ON (II).
  2. Check the MAP SENSOR in the DATA LIST with the HAS. Is about 160 kPa (47.1 inHg, 1,197 mmHg), or 4.49 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 MAP sensor and the PCM.
  3. Turn the ignition switch to LOCK (0).
  4. Disconnect the MAP sensor 3P connector.
  5. Connect MAP sensor 3P connector terminals No. 1 and No. 2 with a jumper wire.
  6. Turn the ignition switch to ON (II).
  7. Check the MAP SENSOR in the DATA LIST with the HAS. Is about 160 kPa (47.1 inHg, 1,197 mmHg), or 4.49 V or more indicated? YES -Go to next step. NO -Go to step 18 .
  8. Remove the jumper wire from the MAP sensor 3P connector.
  9. Measure the voltage between MAP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES -Go to step 14 . NO -Go to next step.
  10. Turn the ignition switch to LOCK (0).
  11. Jump the SCS line with the HAS.
  12. Disconnect PCM connector B (49P).
  13. Check for continuity between PCM connector terminal B34 and MAP sensor 3P connector terminal No. 1. Is there continuity? YES -Go to step 25 . NO -Repair an open in the wire between the PCM (B34) and the MAP sensor, then go to step 20 .
  14. Turn the ignition switch to LOCK (0).
  15. Jump the SCS line with the HAS.
  16. Disconnect PCM connector B (49P).
  17. Check for continuity between PCM connector terminal B35 and MAP sensor 3P connector terminal No. 2. Is there continuity? YES -Go to step 25 . NO -Repair an open in the wire between the PCM (B35) and the MAP sensor, then go to step 20 .
  18. Turn the ignition switch to LOCK (0).
  19. Replace the MAP sensor (see «MAP SENSOR REPLACEMENT»(ref-360080-S11024392292010042600000) (+).
  20. Reconnect all connectors.
  21. Turn the ignition switch to ON (II).
  22. Reset the PCM with the HAS.
  23. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360079-S22847966492010042600000) (+).
  24. Check for Pending or Confirmed DTCs with the HAS. Is DTC P0108 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.
  25. Reconnect all connectors.
  26. 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) (+).
  27. Check for Pending or Confirmed DTCs with the HAS. Is DTC P0108 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 (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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