| Last Modified: 11-27-2007 | 1.6 U | |
| Service Category: Suspension | Section: Suspension Control System | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000003AN1001X |
| Title: SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: DATA LIST / ACTIVE TEST (2008 LX570) | ||
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG) and the Techstream on.
(d) Enter the following menus: Chassis / AHC / Data List.
(e) According to the display on the Techstream, read the Data List.
AHC
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
(Up&Down)G Sensor FR |
G (up and down) front acceleration sensor RH reading / min.: -1045.29 m/s2 max.: 1045.26 m/s2 |
0 +/-0.98 m/s2 at still condition |
The reading changes when the vehicle (Front RH) is bounced. |
|
(Up&Down)G Sensor FL |
G (up and down) front acceleration sensor LH reading / min.: -1045.29 m/s2 max.: 1045.26 m/s2 |
0 +/-0.98 m/s2 at still condition |
The reading changes when the vehicle (Front LH) is bounced. |
|
(Up&Down)G Sensor Rear |
G (up and down) rear acceleration sensor reading / min.: -1045.29 m/s2 max.: 1045.26 m/s2 |
0 +/-0.98 m/s2 at still condition |
The reading changes when the vehicle (Rear) is bounced. |
|
(Back&Forth)G Sensor |
G sensor reading / min.: -4.5952 m/s2 max.: 4.5953 m/s2 |
0 +/-0.98 m/s2 at still condition |
The reading changes when the vehicle is bounced. |
|
Oil Pressure Sensor |
Fluid pressure sensor reading / min.: -784.79 MPa (-8002.540 kgf/cm2, -113824.688 psi) max.: 784.76 MPa (8002.296 kgf/cm2, 113821.215 psi) |
- |
- |
|
Oil Temperature Sensor |
Fluid temperature sensor reading / min.: -3276.8°C (-5866.24°F) max.: 3276.7°C (5930.06°F) |
- |
- |
|
Gravity Sensor(Side to Side) |
Yaw rate sensor information / min.: -1176.37 m/s2 max.: 1176.33 m/s2 |
- |
- |
|
FR Height Control Sensor |
Front height control sensor RH reading / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
FL Height Control Sensor |
Front height control sensor LH reading / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
RR Height Control Sensor |
Rear height control sensor RH reading / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
RL Height Control Sensor |
Rear height control sensor LH reading / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
Height Offset Max |
Display of amount of vehicle height calibration that is possible / min.: 0 mm (0 in.) max.: 655.35 mm (25.801 in.) |
min.: 0 mm (0 in.) max.: 20 mm (0.787 in.) |
- |
|
FR Height Adjust |
Display of vehicle height offset recorded value of front right wheel / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
FL Height Adjust |
Display of vehicle height offset recorded value of front left wheel / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
RR Height Adjust |
Display of vehicle height offset recorded value of rear right wheel / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
RL Height Adjust |
Display of vehicle height offset recorded value of rear left wheel / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
FR After Height Adjust |
Display of after-calibration vehicle height value of front right wheel / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
FL After Height Adjust |
Display of after-calibration vehicle height value of front left wheel / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
RR After Height Adjust |
Display of after-calibration vehicle height value of rear right wheel / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
RL After Height Adjust |
Display of after-calibration vehicle height value of rear left wheel / min.: -3276.8 mm (-129 in.) max.: 3276.7 mm (129 in.) |
- |
- |
|
Stop Light Switch |
Stop light switch / ON or OFF |
ON: Brake pedal depressed OFF: Brake pedal released |
- |
|
SPORT Switch |
Damping mode select switch (SPORT) / ON or OFF |
ON: SPORT OFF: NORMAL or COMFORT |
- |
|
COMFORT Switch |
Damping mode select switch (COMFORT) / ON or OFF |
ON: COMFORT OFF: NORMAL or SPORT |
- |
|
Door Switch |
Door courtesy light switch / ON or OFF |
ON: Door open OFF: All doors closed |
- |
|
Access Mode Switch |
Easy access mode switch / ON or OFF |
ON: Easy access mode switch pushed and held OFF: Easy access mode switch not pushed |
- |
|
Height Control Switch(Up) |
Height control switch (Up) / ON or OFF |
ON: Up button of height control switch pushed OFF: Height control switch not pushed |
- |
|
Height Control Switch(Down) |
Height control switch (Down) / ON or OFF |
ON: Down button of height control switch pushed OFF: Height control switch not pushed |
- |
|
Height Offset |
Vehicle height offset calibration condition reading / ON or OFF |
ON: Vehicle height offset calibration complete OFF: Before vehicle height offset calibration |
- |
|
TD Terminal |
TD terminal / ON or OFF |
ON: Height control OFF switch pushed OFF: Height control OFF switch not pushed |
- |
|
TC Terminal |
TC terminal / ON or OFF |
ON: DTC output OFF: DTC not output |
- |
|
TS Terminal |
TS terminal / ON or OFF |
ON: During test mode OFF: Normal mode |
- |
|
Differential Lock Switch |
Center differential lock switch / ON or OFF |
ON: Center differential locked OFF: Center differential free |
- |
|
L4 Switch |
Transfer position switch / ON or OFF |
ON: Transfer position switch set to L4 OFF: Transfer position switch set to H4 |
- |
|
IG Power Source Voltage |
ECU power supply voltage / min.: 0 V max.: 25.5 V |
Engine switch on (IG): 11 to 14 V |
- |
|
+B Power Source Voltage |
Power supply for damping force control actuator / min.: 0 V max.: 25.5 V |
Engine switch on (IG): 11 to 14 V |
- |
|
+B2 Power Source Voltage |
Power supply for No. 1 height control valve and front suspension control valve / min.: 0 V max.: 25.5 V |
Engine switch on (IG): 11 to 14 V |
- |
|
Steering Angle |
Steering angle sensor reading / min.: -49152° max. 49150.5° |
Actual steering angle Left turn: reading increases Right turn: reading decreases |
- |
|
Engine Speed |
Engine speed / min.: 0 rpm max.: 25500 rpm |
Actual engine speed |
The speed indicated on the combination meter. |
|
FR Wheel Speed |
Front right wheel speed reading / min.: 0 km/h (0 mph) max.: 255 km/h (159 mph) |
- |
- |
|
FL Wheel Speed |
Front left wheel speed reading / min.: 0 km/h (0 mph) max.: 255 km/h (159 mph) |
- |
- |
|
RR Wheel Speed |
Rear right wheel speed reading / min.: 0 km/h (0 mph) max.: 255 km/h (159 mph) |
- |
- |
|
RL Wheel Speed |
Rear left wheel speed reading / min.: 0 km/h (0 mph) max.: 255 km/h (159 mph) |
- |
- |
|
Driving Torque |
Actual driving torque / min.: -1024 Nm max.: 1023 Nm |
- |
- |
|
Damper Step FR |
Damper step (Front RH) / min.: 1 step max.: 255 step |
min.: 1 step max.: 16 step |
- |
|
Damper Step FL |
Damper step (Front LH) / min.: 1 step max.: 255 step |
min.: 1 step max.: 16 step |
- |
|
Damper Step RR |
Damper step (Rear RH) / min.: 1 step max.: 255 step |
min.: 1 step max.: 16 step |
- |
|
Damper Step RL |
Damper step (Rear LH) / min.: 1 step max.: 255 step |
min.: 1 step max.: 16 step |
- |
|
Max Damper Step FR |
Damper step (Front RH) / min.: 0 step max.: 255 step |
16 step |
- |
|
Max Damper Step FL |
Damper step (Front LH) / min.: 0 step max.: 255 step |
16 step |
- |
|
Max Damper Step RR |
Damper step (Rear RH) / min.: 0 step max.: 255 step |
16 step |
- |
|
Max Damper Step RL |
Damper step (Rear LH) / min.: 0 step max.: 255 step |
16 step |
- |
|
Adaptive Variable Suspension(AVS) Mode |
Adaptive variable suspension mode / NORMAL / COMFORT / SEMI CO / SEMI SP / SPORTS |
Actual conditions displayed |
- |
|
Height Mode |
Height mode / NORMAL / ACCE LO / LO / STAN LO / FAST LO / L4 HI / HI / EX HI |
Actual conditions displayed |
- |
|
Access Mode |
Easy access mode / ON or OFF |
ON: Easy access mode enabled OFF: Easy access mode off |
- |
|
Height Control Prohibition |
Vehicle height control prohibition information / Permiss or Prohibi |
- |
- |
|
Front Right Height Solenoid |
Front height solenoid RH / ON or OFF |
- |
- |
|
Front Left Height Solenoid |
Front height solenoid LH / ON or OFF |
- |
- |
|
Rear Right Height Solenoid |
Rear height solenoid RH / ON or OFF |
- |
- |
|
Rear Left Height Solenoid |
Rear height solenoid LH / ON or OFF |
- |
- |
|
Front Gate Valve |
Front gate valve / ON or OFF |
- |
- |
|
Rear Gate Valve |
Rear gate valve / ON or OFF |
- |
- |
|
Accumulator Valve |
Accumulator valve / ON or OFF |
- |
- |
|
FR Gas spring Switch Valve |
Front gas spring switch valve RH / ON or OFF |
- |
- |
|
FL Gas spring Switch Valve |
Front gas spring switch valve LH / ON or OFF |
- |
- |
|
Pump Motor Relay |
Pump motor relay / ON or OFF |
- |
- |
|
Main Relay for Valve |
Main relay for valve / ON or OFF |
- |
- |
|
Main Relay for Actuator |
Main relay for actuator / ON or OFF |
- |
- |
|
Number of Trouble Codes |
Number of DTCs recorded / min.: 0 max.: 255 |
- |
- |
2. PERFORM ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG) and the Techstream on.
(d) Enter the following menus: Chassis / AHC / Active Test.
(e) According to the display on the Techstream, perform the Active Test.
AHC
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Damper Step FR |
Changes front damper RH step |
min.: 1 step max.: 16 step |
The Damper Step item of the Data List changes to the step selected in the Active Test. |
|
Damper Step FL |
Changes front damper LH step |
min.: 1 step max.: 16 step |
The Damper Step item of the Data List changes to the step selected in the Active Test. |
|
Damper Step RR |
Changes rear damper RH step |
min.: 1 step max.: 16 step |
The Damper Step item of the Data List changes to the step selected in the Active Test. |
|
Damper Step RL |
Changes rear damper LH step |
min.: 1 step max.: 16 step |
The Damper Step item of the Data List changes to the step selected in the Active Test. |
|
Front Right Height Solenoid |
Front height control solenoid valve RH |
ON or OFF |
Operation of the solenoid can be heard. |
|
Front Left Height Solenoid |
Front height control solenoid valve LH |
ON or OFF |
Operation of the solenoid can be heard. |
|
Rear Right Height Solenoid |
Rear height control solenoid valve RH |
ON or OFF |
Operation of the solenoid can be heard. |
|
Rear Left Height Solenoid |
Rear height control solenoid valve LH |
ON or OFF |
Operation of the solenoid can be heard. |
|
Front Gate Valve |
Front gate valve |
ON or OFF |
When the Front Gate Valve item of the Active Test is operated, the Front Gate Valve item of the Data List changes to ON/OFF. |
|
Rear Gate Valve |
Rear gate valve |
ON or OFF |
When the Rear Gate Valve item of the Active Test is operated, the Rear Gate Valve item of the Data List changes to ON/OFF. |
|
Accumulator Valve |
Accumulator valve |
ON or OFF |
Operation of the solenoid can be heard. |
|
FR Gas Spring Switch Valve |
Front gas spring switch valve RH |
ON or OFF |
When the FR Gas Spring Switch Valve item of the Active Test is operated, the FR Gas Spring Switch Valve item of the Data List changes to ON/OFF. |
|
FL Gas Spring Switch Valve |
Front gas spring switch valve LH |
ON or OFF |
When the FL Gas Spring Switch Valve item of the Active Test is operated, the FL Gas Spring Switch Valve item of the Data List changes to ON/OFF. |
|
Front Right Wheel Up/Down |
Right front vehicle height |
UP, DOWN or OFF |
- |
|
Front Left Wheel Up/Down |
Left front vehicle height |
UP, DOWN or OFF |
- |
|
Rear Right Wheel Up/Down |
Right rear vehicle height |
UP, DOWN or OFF |
- |
|
Rear Left Wheel Up/Down |
Left rear vehicle height |
UP, DOWN or OFF |
- |
|
Front Wheel Up/Down |
Front vehicle height |
UP, DOWN or OFF |
- |
|
Rear Wheel Up/Down |
Rear vehicle height |
UP, DOWN or OFF |
- |
|
Front Wheel Up by Accumulator |
Raising of front vehicle height |
UP or OFF |
- |
|
Rear Wheel Up by Accumulator |
Raising of rear vehicle height. |
UP or OFF |
- |
|
|