SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: DESCRIPTION (2008 LX570)

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Last Modified: 11-27-2007		1.6 C
Service Category: Suspension	Section: Suspension Control System
Model Year: 2008	Model: LX570	Doc ID: RM000003AT1001X
Title: SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: DESCRIPTION (2008 LX570)

DTC

U0100

Lost Communication with ECM / PCM "A"

DTC

U0101

Lost Communication with TCM

DTC

U0114

Lost Communication with 4WD Control ECU

DTC

U0122

Lost Communication with Vehicle Dynamics Control Module

DTC

U0124

Lost Communication with Lateral Acceleration Sensor Module

DTC

U0126

Lost Communication with Steering Angle Sensor Module

DTC

U0130

Lost Communication with VGRS

DTC

U0140

Lost Communication with Main Body ECU

DESCRIPTION

The suspension control ECU receives signals from the ECM, four wheel drive control ECU, skid control ECU, yaw rate sensor, steering sensor, steering control ECU and main body ECU via CAN communication. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system first.

DTC Code	Detection Condition	Trouble Area
U0100	While driving at 30 km/h (19 mph), CAN communication between the suspension control ECU and ECM stops for 3 seconds or more.	CAN communication system ECM Suspension control ECU
U0101	While driving at 30 km/h (19 mph), CAN communication between the suspension control ECU and ECM stops for 3 seconds or more.	CAN communication system ECM Suspension control ECU
U0114	While driving at 30 km/h (19 mph), CAN communication between the suspension control ECU and four wheel drive control ECU stops for 3 seconds or more.	CAN communication system Four wheel drive control ECU Suspension control ECU
U0122	CAN communication between the suspension control ECU and skid control ECU stops for 3 seconds or more.	CAN communication system Skid control ECU Suspension control ECU
U0124	CAN communication between the suspension control ECU and yaw rate sensor stops for 3 seconds or more.	CAN communication system Yaw rate sensor Suspension control ECU
U0126	CAN communication between the suspension control ECU and steering sensor stops for 3 seconds or more.	CAN communication system Steering sensor Suspension control ECU
U0130	5 seconds after the engine switch is turned on (IG), CAN communication between the suspension control ECU and steering control ECU stops for 3 seconds or more.	CAN communication system Steering control ECU Suspension control ECU
U0140	CAN communication between the suspension control ECU and main body ECU stops for 5 seconds or more.	CAN communication system Main body ECU Suspension control ECU

INSPECTION PROCEDURE

NOTICE:

Before performing troubleshooting, inspect the connectors of related circuits.

If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed .

PROCEDURE

CLEAR DTC

(a) Clear the DTCs .

CHECK DTC

(a) Perform a road test.

(b) Check for DTCs.

OK:

DTC is not output.