Inspection Procedure

NOTE:

Before performing troubleshooting, inspect the connectors of related circuits.
Before replacing the suspension control ECU, perform all of the following again: 1) symptom simulation (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ); 2) DTC inspection; and 3) Intelligent tester or Techstream inspection (Data List or Active Test). If no malfunctions are found in other areas, replace the suspension control ECU.
If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed (see INITIALIZATION ).

CHECK ECUS CONNECTED TO CAN BUS

Turn the power switch OFF
Connect the Intelligent tester or Techstream to the DLC3.

Check the ECUs connected to CAN bus (see DIAGNOSIS SYSTEM )

Result

RESULT CHART

Result	Proceed to
No malfunction appears	A
Malfunction appears	B

B: GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: Go to next Step

CHECK DTC (ALL)

Turn the power switch OFF
Connect the Intelligent tester or Techstream to the DLC3

Check for all DTCs

Result

RESULT CHART

Result	Proceed to
DTC is not output	A
CAN system DTC is output	B
LIN system DTC is output	C

B: GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (See HOW TO PROCEED WITH TROUBLESHOOTING )

C: GO TO LIN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: Go to next Step

CHECK INDICATOR LIGHT OPERATION (ACTIVE TEST)

Turn the power switch OFF.
Connect the Intelligent tester or Techstream to the DLC3.
Turn the power switch ON (IG) and the tester ON
Enter the following menus:
1. Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / BODY / METER /ACTIVE TEST
2. Techstream - Select: Body Electrical / Combination Meter / Active Test.

Check the condition of the absorber control indicator light and height control indicator light by operating the tester.

Intelligent tester

METER

TESTER DISPLAY CHART

Tester Display	Test Part	Control Range
TEMS SPORTS	Absorber control indicator light (SPORT)	ON or OFF
HEIGHT INDIC	Height control indicator light (HEIGHT HIGH)	ON or OFF
TEMS COMFORT	Absorber control indicator light (COMFORT)	ON or OFF

Techstream

Combination Meter

TESTER DISPLAY CHART

Tester Display	Test Part	Control Range
Indicat TEMS Sports	Absorber control indicator light (SPORT)	ON or OFF
Indicat Height High	Height control indicator light (HEIGHT HIGH)	ON or OFF
Indicat TEMS Comfort	Absorber control indicator light (COMFORT)	ON or OFF

OK: Indicator light turns on when operating tester.

NG: GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (See HOW TO PROCEED WITH TROUBLESHOOTING )

OK: Go to next Step

CHECK SWITCH SIGNAL (SUSPENSION CONTROL ECU DATA LIST)

Turn the power switch OFF.
Connect the Intelligent tester or Techstream to the DLC3.
Turn the power switch ON (IG) and the tester ON.
Enter the following menus.
1. Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / CHASSIS / AIR SUSPENSION / DATA LIST.
2. Techstream - Select: Chassis / Air suspension / Data List.

Select each item below in the DATA LIST and read its value displayed on the tester.

Intelligent tester

AIR SUSPENSION

DIAGNOSIS NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Range	Normal Condition
COMFORT SW	Absorber control switch (COMFORT) / ON or OFF	ON COMFORT OFF NORMAL
SPORT SW	Absorber control switch (SPORT) / ON or OFF	ON SPORT OFF NORMAL
DAMPER SW 1	Height control switch (HEIGHT HIGH)/ ON or OFF	ON Switch is pressed and held OFF Switch is not pressed

Techstream

Air suspension

DIAGNOSIS NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Range	Normal Condition
COMFORT Switch	Absorber control switch (COMFORT) / ON or OFF	ON COMFORT OFF NORMAL
SPORT switch	Absorber control switch (SPORT) / ON or OFF	ON SPORT OFF NORMAL
Damping Force Switch 1	Height control switch (HEIGHT HIGH)/ ON or OFF	ON Switch is pressed and held OFF Switch is not pressed

OK: On tester screen, item changes between ON and OFF according to switch operation.

NG: Go to step 5

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See TERMINALS OF ECU )

CHECK SWITCH SIGNAL (COMBINATION SWITCH DATA LIST)

Turn the power switch OFF
Connect the Intelligent tester or Techstream to the DLC3.
Turn the power switch ON (IG) and the tester ON
Enter the following menus.
1. Intelligent tester-Select DIAGNOSIS/OBD/MOBD / BODY / CENTER CONSOLE / DATA LIST.
2. Techstream - Select: Body Electrical / Center Console Switch / Data List

Select each item below in the DATA LIST and read its value displayed on the tester

Intelligent tester

CENTER CONSOLE

DIAGNOSIS NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Range	Normal Condition
HEIGHT HIGH SW	Height control switch (HEIGHT HIGH) / ON or OFF	ON Switch is pressed and held OFF Switch is not pressed
SPORT SW	Absorber control switch (SPORT) / ON or OFF	ON SPORT OFF NORMAL
COMFORT SW	Absorber control switch (COMFORT) / ON or OFF	ON COMFORT OFF NORMAL

Techstream

Center Console Switch

DIAGNOSIS NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Range	Normal Condition
HEIGHT HIGH Switch	Height control switch (HEIGHT HIGH) / ON or OFF	ON Switch is pressed and held OFF Switch is not pressed
SPORT Mode Switch	Absorber control switch (SPORT) / ON or OFF	ON SPORT OFF NORMAL
COMFORT Mode Switch	Absorber control switch (COMFORT) / ON or OFF	ON COMFORT OFF NORMAL

OK: On tester screen, item changes between ON and OFF according to switch operation.

NG: REPLACE COMBINATION SWITCH (See REMOVAL )

OK: REPLACE SUSPENSION CONTROL ECU (See REMOVAL )