ACTIVE CONTROL ENGINE MOUNT (ACM) SYSTEM - Harsh engine vibration felt in the passenger's compartment

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.

Go to step 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.

Go to step 3.

Front active control engine mount test 1
-1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Open the 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.

Front ACM Solenoid OFF

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.
Front active control engine mount test 2
-1. Turn the vehicle to the OFF (LOCK) mode, then back to the ON mode.

- 2. Select the Front ACM Solenoid ON/OFF in the INSPECTION menu with the HDS.

Front ACM Solenoid ON/OFF

- 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. Go to: Front Engine Mount - Removal and Installation. .

If the mount is OK, go to step 1 and recheck.

NO

Replace the front engine mount. Go to: Front Engine Mount - Removal and Installation. .
Rear active control engine mount test 1
-1. Do the Rear ACM Solenoid OFF with the HDS.

Rear ACM Solenoid OFF

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.
Rear active control engine mount test 2
-1. Turn the vehicle to the OFF (LOCK) mode, then back to the ON mode.

- 2. Select the Rear ACM Solenoid ON/OFF in the INSPECTION menu with the HDS.

Rear ACM Solenoid ON/OFF

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. Go to:Rear Engine Mount - Removal and installation .

If the mount is OK, go to step 1 and recheck.

NO

Replace the rear engine mount. Go to:Rear Engine Mount - Removal and installation .