Problem Symptoms Table

HINT:

If a normal system code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
Inspect the fuse before inspecting the circuits shown in the chart below.
Inspect each malfunction circuit in numerical order for the corresponding symptom.
If any malfunction still exists even after checking and confirming that all the circuits are normal, replace the absorber control ECU.

ADAPTIVE VARIABLE SUSPENSION SYSTEM

ADAPTIVE VARIABLE SUSPENSION SYSTEM PROBLEM SYMPTOMS

Symptom	Suspected area	See
Damping force control does not operate at all	1. Power source circuit	WIRING DIAGRAM
	2. Acceleration sensor assembly circuit	DTC C1715 FRONT ACCELERATION SENSOR RH; DTC C1716 FRONT ACCELERATION SENSOR LH; DTC C1717 REAR ACCELERATION SENSOR; DTC C1791 FRONT ACCELERATION SENSOR RH (TEST MODE DTC); DTC C1792 FRONT ACCELERATION SENSOR LH (TEST MODE DTC); DTC C1793 REAR ACCELERATION SENSOR (TEST MODE DTC)
	3. Absorber control actuator circuit	DTC C1725 FRONT DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1726 FRONT DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT; DTC C1727 REAR DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1728 REAR DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT
	4. Shock absorber assembly (Front)	INSPECTION
	5. Shock absorber assembly (Rear)	INSPECTION
	6. Vehicle speed sensor circuit	DTC C1776 SPEED SENSOR CIRCUIT
	7. Steering sensor circuit	DTC C1776 SPEED SENSOR CIRCUIT
	8. CAN communication system	HOW TO PROCEED WITH TROUBLESHOOTING
	9. Absorber control ECU	ABSORBER CONTROL ECU
Only rolling control does not operate	1. Steering angle sensor circuit	DTC C1776 SPEED SENSOR CIRCUIT
	2. Vehicle speed sensor circuit	DTC C1776 SPEED SENSOR CIRCUIT
	3. Absorber control actuator circuit	DTC C1725 FRONT DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1726 FRONT DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT; DTC C1727 REAR DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1728 REAR DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT
	4. CAN communication system	HOW TO PROCEED WITH TROUBLESHOOTING
	5. Absorber control ECU	ABSORBER CONTROL ECU
Only anti-squat control does not operate	1. Crankshaft position sensor circuit	INSPECTION
	2. Vehicle speed sensor circuit	DTC C1776 SPEED SENSOR CIRCUIT
	3. Acceleration sensor assembly circuit	DTC C1715 FRONT ACCELERATION SENSOR RH; DTC C1716 FRONT ACCELERATION SENSOR LH; DTC C1717 REAR ACCELERATION SENSOR; DTC C1791 FRONT ACCELERATION SENSOR RH (TEST MODE DTC); DTC C1792 FRONT ACCELERATION SENSOR LH (TEST MODE DTC); DTC C1793 REAR ACCELERATION SENSOR (TEST MODE DTC)
	4. Absorber control ECU	ABSORBER CONTROL ECU
Only anti-drive control does not operate	1. Stop light switch circuit	DTC C1249/49 OPEN IN STOP LIGHT SWITCH CIRCUIT
	2. Vehicle speed sensor circuit	DTC C1776 SPEED SENSOR CIRCUIT
	3. Acceleration sensor assembly circuit	DTC C1715 FRONT ACCELERATION SENSOR RH; DTC C1716 FRONT ACCELERATION SENSOR LH; DTC C1717 REAR ACCELERATION SENSOR; DTC C1791 FRONT ACCELERATION SENSOR RH (TEST MODE DTC); DTC C1792 FRONT ACCELERATION SENSOR LH (TEST MODE DTC); DTC C1793 REAR ACCELERATION SENSOR (TEST MODE DTC)
	4. CAN communication system	HOW TO PROCEED WITH TROUBLESHOOTING
	5. Absorber control ECU	ABSORBER CONTROL ECU
Only speed sensor control does not operate	1. Vehicle speed sensor circuit	DTC C1776 SPEED SENSOR CIRCUIT
	2. Absorber control actuator circuit	DTC C1725 FRONT DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1726 FRONT DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT; DTC C1727 REAR DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1728 REAR DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT
	3. Absorber control ECU	ABSORBER CONTROL ECU
Only spring-bottom vibration control does not operate	1. Vehicle speed sensor circuit	DTC C1776 SPEED SENSOR CIRCUIT
	2. Acceleration sensor assembly circuit	DTC C1715 FRONT ACCELERATION SENSOR RH; DTC C1716 FRONT ACCELERATION SENSOR LH; DTC C1717 REAR ACCELERATION SENSOR; DTC C1791 FRONT ACCELERATION SENSOR RH (TEST MODE DTC); DTC C1792 FRONT ACCELERATION SENSOR LH (TEST MODE DTC); DTC C1793 REAR ACCELERATION SENSOR (TEST MODE DTC)
	3. Absorber control actuator circuit	DTC C1725 FRONT DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1726 FRONT DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT; DTC C1727 REAR DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1728 REAR DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT
	4. Absorber control ECU	ABSORBER CONTROL ECU
Only bumpy control does not operate	1. Acceleration sensor assembly circuit	DTC C1715 FRONT ACCELERATION SENSOR RH; DTC C1716 FRONT ACCELERATION SENSOR LH; DTC C1717 REAR ACCELERATION SENSOR; DTC C1791 FRONT ACCELERATION SENSOR RH (TEST MODE DTC); DTC C1792 FRONT ACCELERATION SENSOR LH (TEST MODE DTC); DTC C1793 REAR ACCELERATION SENSOR (TEST MODE DTC)
	2. Absorber control actuator circuit	DTC C1725 FRONT DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1726 FRONT DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT; DTC C1727 REAR DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1728 REAR DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT
	3. Shock absorber assembly (Front)	INSPECTION
	4. Shock absorber assembly (Rear)	INSPECTION
	5. Absorber control ECU	ABSORBER CONTROL ECU
Only VSC operation control does not operate	1. Acceleration sensor assembly circuit	DTC C1715 FRONT ACCELERATION SENSOR RH; DTC C1716 FRONT ACCELERATION SENSOR LH; DTC C1717 REAR ACCELERATION SENSOR; DTC C1791 FRONT ACCELERATION SENSOR RH (TEST MODE DTC); DTC C1792 FRONT ACCELERATION SENSOR LH (TEST MODE DTC); DTC C1793 REAR ACCELERATION SENSOR (TEST MODE DTC)
	2. Absorber control actuator circuit	DTC C1725 FRONT DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1726 FRONT DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT; DTC C1727 REAR DAMPING FORCE CONTROL ACTUATOR RH CIRCUIT; DTC C1728 REAR DAMPING FORCE CONTROL ACTUATOR LH CIRCUIT
	3. Shock absorber assembly (Front)	INSPECTION
	4. Shock absorber assembly (Rear)	INSPECTION
	5. CAN communication system	HOW TO PROCEED WITH TROUBLESHOOTING
	6. Brake control system	HOW TO PROCEED WITH TROUBLESHOOTING
	7. Absorber control ECU	ABSORBER CONTROL ECU
	8. Skid control ECU	SKID CONTROL BUZZER CIRCUIT
DTC check cannot be completed	1. Power source circuit	WIRING DIAGRAM
	2. CAN communication system	HOW TO PROCEED WITH TROUBLESHOOTING
	3. TC terminal circuit	TC AND CG TERMINAL CIRCUIT
	4. Absorber control ECU	ABSORBER CONTROL ECU
	5. ECM	REMOVAL
Test mode (signal check) cannot be completed	1. Power source circuit	WIRING DIAGRAM
	2. CAN communication system	HOW TO PROCEED WITH TROUBLESHOOTING
	3. TS terminal circuit	TS AND CG TERMINAL CIRCUIT
	4. Absorber control ECU	ABSORBER CONTROL ECU
	5. Skid control ECU	SKID CONTROL BUZZER CIRCUIT
SPORT indicator light (absorber control indicator light) circuit (Remains on)	1. Power source circuit	WIRING DIAGRAM
	2. Absorber control switch circuit	DTC C1787 EMS SWITCH CIRCUIT (TEST MODE DTC)
	3. SPORT indicator light (absorber control indicator light) circuit	ABSORBER CONTROL INDICATOR LIGHT REMAINS ON
	4. Absorber control ECU	ABSORBER CONTROL ECU
SPORT indicator light (absorber control indicator light) circuit (Does not come on)	1. Power source circuit	WIRING DIAGRAM
	2. Absorber control switch circuit	DTC C1787 EMS SWITCH CIRCUIT (TEST MODE DTC)
	3. SPORT indicator light (absorber control indicator light) circuit	ABSORBER CONTROL INDICATOR LIGHT DOES NOT COME ON
	4. Absorber control ECU	ABSORBER CONTROL ECU