Active Control Engine Mount (ACM) System Symptom Troubleshooting - Harsh engine vibration felt in the passenger's compartment
Harsh engine vibration felt in the passenger's compartment
1.
Problem verification 1:

Problem verification 1
?1.
Start the engine, and let it idle 20 seconds.

?2.
Check for PGM-FI system DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
       

Are any DTCs indicated?

     
YES
     
     
     
Go to the indicated DTC's troubleshooting.?
     
NO
     
     
     
Go to step 2.
2.
Problem verification 2:

Problem verification 2
?1.
Select the ACM in the PGM-FI system, and check for ACM system DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
       

Are any DTCs indicated?

     
YES
     
     
     
Go to the indicated DTC's troubleshooting.?
     
NO
     
     
     
Go to step 3.
3.
Front active control engine mount test 1:

Front active control engine mount test 1
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Open the engine hood.

?3.
Start the engine.

?4.
Select the ACM Test in the INSPECTION menu with the HDS.

?5.
Do the Front ACM Solenoid OFF with the HDS.

  

Does the engine vibration change when you turn the Front ACM Solenoid OFF?

     
YES
     
     
     
Exit the Front ACM Solenoid OFF, then go to step 5.
     
NO
     
     
     
Exit the Front ACM Solenoid OFF, then go to step 4.
4.
Front active control engine mount test 2:

Front active control engine mount test 2
?1.
Press the engine start/stop button to select the OFF mode, then back to ON mode.

?2.
Exit the ACM Test, and select the Front ACM Solenoid ON/OFF in the INSPECTION menu with the HDS.

  

?3.
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. If the mount is OK, go to step 1 and recheck.
     
NO
     
     
     
5.
Rear active control engine mount test 1:

Rear active control engine mount test 1
?1.
Do the Rear ACM Solenoid OFF with the HDS.

  

Does the engine vibration change when you turn the Rear ACM Solenoid OFF ?

     
YES
     
     
     
Check the other engine mounts and any other engine problems that can cause vibration.?
     
NO
     
     
     
Go to step 6.
6.
Rear active control engine mount test 2:

Rear active control engine mount test 2
?1.
Press the engine start/stop button to select the OFF mode, then back to ON mode.

?2.
Exit the ACM TEST, and select the Rear ACM Solenoid ON/OFF in the INSPECTION menu with the HDS.

  

?3.
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. If the mount is OK, go to step 1 and recheck.
     
NO