ADAPTIVE VARIABLE SUSPENSION SYSTEM, Diagnostic DTC:U0100, U0101, U0122, U0124, U0126, U0130, U1103, U114C

DTC Code	DTC Name
U0100	Lost Communication with ECM / PCM "A"
U0101	Lost Communication with TCM
U0122	Lost Communication With Vehicle Dynamics Control Module
U0124	Lost Communication with Lateral Acceleration Sensor Module
U0126	Lost Communication with Steering Angle Sensor Module
U0130	Lost Communication with VGRS
U1103	Lost Communication with Stop and Start Control Module
U114C	Lost Communication with Suspension Control Module 1

DESCRIPTION

The absorber control ECU receives signals from the skid control ECU (brake actuator assembly)*1, skid control ECU assembly*2, steering sensor, engine stop and start ECU*3, acceleration sensor (yaw rate sensor), VGRS ECU (front steering control ECU)*4, suspension control ECU*5 and ECM via CAN communication.

When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system first.

*1: w/ Vacuum Brake Booster
*2: w/o Vacuum Brake Booster
*3: w/ Stop and Start System
*4: w/ Variable Gear Ratio Steering System
*5: w/ Air Suspension System

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Memory
U0100	Lost Communication with ECM / PCM "A"	While driving at 30 km/h (19 mph) or more, data is not received via CAN communication for 3 seconds or more.	ECM CAN communication system Absorber control ECU	Does not come on	Yes
U0101	Lost Communication with TCM	While driving at 30 km/h (19 mph) or more, data is not received via CAN communication for 6 seconds or more.	ECM CAN communication system Absorber control ECU	Does not come on	Yes
U0122	Lost Communication With Vehicle Dynamics Control Module	Data is not received from the skid control ECU (brake actuator assembly)1 or skid control ECU assembly2 via CAN communication for 3 seconds or more.	Skid control ECU (brake actuator assembly)1 Skid control ECU assembly2 CAN communication system Absorber control ECU	Does not come on	Yes
U0124	Lost Communication with Lateral Acceleration Sensor Module	Data is not received from the acceleration sensor (yaw rate sensor) via CAN communication for 3 seconds or more.	Acceleration sensor (yaw rate sensor) CAN communication system Absorber control ECU	Does not come on	Yes
U0126	Lost Communication with Steering Angle Sensor Module	Data is not received from the steering sensor via CAN communication for 3 seconds or more.	Steering sensor CAN communication system Absorber control ECU	Does not come on	Yes
U0130	Lost Communication with VGRS	After the engine switch is turned on (IG) and 5 seconds elapse, CAN communication from the VGRS ECU (front steering control ECU) stops for 3 seconds or more.	VGRS ECU (front steering control ECU) CAN communication system Absorber control ECU	Does not come on	Yes
U1103	Lost Communication with Stop and Start Control Module	While driving at 30 km/h (19 mph) or more, data is not received via CAN communication for 3 seconds or more.	Engine stop and start ECU CAN communication system Absorber control ECU	Does not come on	Yes
U114C	Lost Communication with Suspension Control Module 1	Data is not received from the suspension Control ECU via CAN communication for 4 seconds or more.	Suspension control ECU CAN communication system Absorber control ECU	Does not come on	Yes

*1: w/ Vacuum Brake Booster
*2: w/o Vacuum Brake Booster

CAUTION / NOTICE / HINT

Note

Before performing troubleshooting, inspect the connectors of related circuits.
If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first.

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Before replacing the absorber control ECU, perform all of the following:

Symptom simulation.

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DTC inspection.

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GTS inspection.

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If no malfunctions are found in other areas, replace the absorber control ECU.

After replacing the absorber control ECU with a new one, perform registration of vehicle identification information.

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PROCEDURE

CHECK FOR DTCS

Clear the DTCs.

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Chassis > Adaptive Variable Suspension System > Clear DTCs
Turn the engine switch off.
Drive the vehicle at a speed of 30 km/h (19 mph) or more for 10 seconds or more.

Check for DTCs.

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Chassis > Adaptive Variable Suspension System > Trouble Codes

Result

Result	Proceed to
CAN DTCs are not output	A
CAN DTCs are output	B

Tech Tips

If a CAN communication malfunction DTC and a related sensor malfunction DTC are output at the same time, the CAN communication malfunction must be repaired before troubleshooting the sensor.

USE SIMULATION METHOD TO CHECK Click here

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here