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Active Control Engine Mount (Acm) System (V6): NVH Honda Accord VIII

Engine Control Systems 1 illustration ~434 words

Harsh Engine Vibration Felt In The Passenger's Compartment

  1. Start the engine, and let it idle 20 seconds.
  2. Check for PGM-FI system's DTC with the HDS. Are any Pending or Confirmed DTCs indicated? YES -Go to the indicated «DTC'S TROUBLESHOOTING»(ref-423708-S16687259482011092800000) . NO -Go to step 3.
  3. Select the ACM in the PGM-FI system, and check for ACM system's DTCs with the HDS. Are any Pending or Confirmed DTCs indicated? YES -Go to the indicated «DTC'S TROUBLESHOOTING»(ref-423708-S16687259482011092800000) . NO -Go to step 4.
  4. Turn the ignition switch to LOCK (0).
  5. Open the engine hood.
  6. Select the ACM TEST in the ACM INSPECTION menu with the HDS.
  7. Do the Fr ACM SOL OFF with the HDS. Does the engine vibration change when you turn the Fr ACM SOL OFF? YES -Turn the Fr ACM SOL to ON, then go to step 10 . NO -Go to step 8.
  8. Exit the ACM TEST, and select the Fr ACM SOL.V ACTIVATION in the ACM INSPECTION menu with the HDS.
  9. Check the front engine mount with your hand. Does the mount vibrate? YES -Check the mount for damage. If needed, replace the front engine mount (see «FRONT ENGINE MOUNT REMOVAL AND INSTALLATION»(ref-423707-S08595473222011092800000) ). If the mount is OK, go to step 1 and recheck. NO -Replace the front engine mount (see «FRONT ENGINE MOUNT REMOVAL AND INSTALLATION»(ref-423707-S08595473222011092800000) ).
  10. Do the Rr ACM SOL OFF with the HDS. Does the engine vibration change when you turn the Rr ACM SOL OFF? YES -The ACM system is OK at this time. Check the other engine mounts and any other engine problems that can cause vibration. NO -Go to step 11.
  11. Exit the ACM TEST, and select the Rr ACM SOL.V ACTIVATION in the ACM INSPECTION menu with the HDS.
  12. Check the rear engine mount with your hand. Does the mount vibrate? YES -Check the mount for damage. If needed, replace the rear engine mount (see «REAR ENGINE MOUNT REMOVAL AND INSTALLATION»(ref-423707-S09511596972011092800000) ). If the mount is OK, go to step 1 and recheck. NO -Replace the rear engine mount (see «REAR ENGINE MOUNT REMOVAL AND INSTALLATION»(ref-423707-S09511596972011092800000) ).

Scheme 55

Scheme 55: Engine Mount Control Unit Replacement
Scheme 55: Engine Mount Control Unit Replacement
  1. Do the battery terminal disconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(ref-423695-S16071056072011092800000) ).
  2. Remove the driver's under-dash fuse/relay box. USA models (see «DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL AND INSTALLATION»(ref-423710-S13284333742011092800000) ) Canada models (see «CANADA MODELS»(ref-423710-S16150183142011092800000) )
  3. Disconnect the engine mount control unit 16P connector (A).
  4. Remove the engine mount control unit (B).
  5. Install the parts in the reverse order of removal.
  6. Do the battery terminal reconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(ref-423695-S16071056072011092800000) ).

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