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DTC P0404: EGR Control Circuit Range/Performance Problem Honda Insight ZE2 рестайлинг

Testing & Diagnostics 5 illustrations ~762 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 758

Scheme 758: DTC P0404: EGR Control Circuit Range/Performance Problem
Scheme 758: DTC P0404: EGR Control Circuit Range/Performance Problem

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Scheme 759
Scheme 759

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Scheme 760
Scheme 760

Scheme 761

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Scheme 761

Scheme 762

Scheme 762
Scheme 762
  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
  4. Do the EGR TEST in the INSPECTION MENU with the HDS. Is the result OK? YES -Intermittent failure, the system is OK at this time. Clean any carbon build-up on the EGR valve with throttle plate cleaner. NO -Go to step 5.
  5. Turn the ignition switch to LOCK (0).
  6. Disconnect the EGR valve 5P connector.
  7. At the EGR valve side, measure the resistance between EGR valve 5P connector terminals No. 2 and No. 3. Is there 100 kohms or more? YES -Go to step 23 . NO -Go to step 8.
  8. At the EGR valve side, measure the resistance between EGR valve 5P connector terminals No. 2 and No. 4. Is there 100 kohms or more? YES -Go to step 23 . NO -Go to step 9.
  9. Check for continuity between EGR valve 5P connector terminal No. 5 and body ground. Is there continuity? YES -Go to step 10. NO -Repair an open in the wire between the EGR valve and G101 (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(ref-513190-S04645343722012110700000) ), then go to step 24 .
  10. Jump the SCS line with the HDS.
  11. Disconnect PCM connector B (49P).
  12. Check for continuity between PCM connector terminal B2 and body ground. Is there continuity? YES -Repair a short in the wire between the PCM (B2) and the EGR valve, then go to step 24 . NO -Go to step 13.
  13. Check for continuity between PCM connector terminal B2 and EGR valve 5P connector terminal No. 1. Is there continuity? YES -Go to step 14. NO -Repair an open in the wire between the PCM (B2) and the EGR valve, then go to step 24 .
  14. Remove the EGR valve (see «EGR VALVE REPLACEMENT»(ref-513186-S18122158842012110700000) ).
  15. Clean any carbon build-up on the EGR valve with throttle plate cleaner.
  16. Install the EGR valve (see «EGR VALVE REPLACEMENT»(ref-513186-S18122158842012110700000) ).
  17. Reconnect all connectors.
  18. Reset the PCM with the HDS.
  19. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-513173-S16164063582012110700000) ).
  20. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
  21. Do the EGR TEST in the INSPECTION MENU with the HDS. Is the result OK? YES -Go to step 30 . NO -Go to step 22.
  22. Turn the ignition switch to LOCK (0).
  23. Replace the EGR valve (see «EGR VALVE REPLACEMENT»(ref-513186-S18122158842012110700000) ).
  24. Reconnect all connectors.
  25. Turn the ignition switch to ON (II).
  26. Reset the PCM with the HDS.
  27. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-513173-S16164063582012110700000) ).
  28. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
  29. Do the EGR TEST in the INSPECTION MENU with the HDS.
  30. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0404 Indicated? YES -Check for poor connections or loose terminals at the EGR valve and the PCM, then go to step 1 . If the connections and terminals are OK, go to step 31. NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated «DTC'S TROUBLESHOOTING»(ref-513186-S33865309972012110700000) .
  31. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-513153-S08553155092012110700000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-513169-S18138486322012110700000) ).
  32. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
  33. Do the EGR TEST in the INSPECTION MENU with the HDS.
  34. Check for Pending or Confirmed DTCs with the HDS. Is DTC P0404 indicated? YES -Check for poor connections or loose terminals at the EGR valve and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-513169-S18138486322012110700000) ), then go to step 33 . 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-513153-S08243124262012110700000) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated «DTC'S TROUBLESHOOTING»(ref-513186-S33865309972012110700000) .

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