Active Ride Control

NOTE:

For the operational conditions of Active Ride Control, refer to System Description .
Perform the "Self diagnostic result" using CONSULT before the symptom diagnosis. Perform the trouble diagnosis if any DTC is detected.

Symptom			Possible cause	Inspection item
Active Ride Control inoperative/ineffective	No Active Ride Control assist		VDC OFF switch is engaged.	Turn VDC OFF switch to the OFF position.
	No Active Ride Control assist		Engine or transmission DTCs are present.	Refer to EC DTCs DTC Index or TM DTCs DTC Index as necessary.
	Bumpy ride on bumpy road		Certain roads, inclement weather or driving conditions	System is functioning normally. Confirm the condition with the customer. Refer to Precautions for Chassis Control (Engine Brake, Active Ride, and Intelligent Trace) .
	Bumpy ride on bumpy road		Road wheel tire condition is abnormal. Road wheel tire size is abnormal.	Check the road wheel tire.
	High vehicle pitch on bumps	Ineffective pitch control	Wheel alignment Steering malfunction	Change Intelligent Engine Brake selection in the vehicle information display to ON.
		No pitch control	Brake system malfunction	Refer to DTC Inspection Priority Chart .
		No engine torque control on curves	Certain roads, inclement weather or driving conditions	System is functioning normally. Confirm the condition with the customer. Refer to Precautions for Chassis Control (Engine Brake, Active Ride, and Intelligent Trace) .