Home › Suspension › Suspension Control System › SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION
Last Modified: 11-27-2007 1.6 U
Service Category: Suspension Section: Suspension Control System
Model Year: 2008 Model: LX570 Doc ID: RM000001CTI006X
Title: SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: TERMINALS OF ECU (2008 LX570)

TERMINALS OF ECU

1. CHECK SUSPENSION CONTROL ECU

HINT:

Inspect the connectors from the back side while the connectors are connected.



Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K32-1 (SLB) - K30-1 (GND)

R - W-B

No. 1 height control valve assembly and front suspension control valve power supply

Engine running

9 to 14 V

K32-2 (FBL+) - K30-1 (GND)

R - W-B

Front damping force control actuator LH

Engine switch off

12.0 to 13.6 Ω

K32-3 (FAL-) - K30-1 (GND)

L - W-B

Front damping force control actuator LH

Engine switch off

12.0 to 13.6 Ω

K32-4 (FAL+) - K30-1 (GND)

B - W-B

Front damping force control actuator LH

Engine switch off

12.0 to 13.6 Ω

K32-5 (FAR-) - K30-1 (GND)

L - W-B

Front damping force control actuator RH

Engine switch off

12.0 to 13.6 Ω

K32-6 (FAR+) - K30-1 (GND)

R - W-B

Front damping force control actuator RH

Engine switch off

12.0 to 13.6 Ω

K32-7 (SLFR) - K30-1 (GND)

R - W-B

Front leveling valve RH
  • Engine running
  • Up or Down button of height control switch pushed when vehicle height NORMAL

During control: Alternating between 10 and 15.5 V

After control: 0 to 0.5 V

K32-8 (SLFL) - K30-1 (GND)

W - W-B

Front leveling valve LH
  • Engine running
  • Up or Down button of height control switch pushed when vehicle height NORMAL

During control: Alternating between 10 and 15.5 V

After control: 0 to 0.5 V

K32-9 (SLRR) - K30-1 (GND)

R - W-B

Rear leveling valve RH
  • Engine running
  • Up or Down button of height control switch pushed when vehicle height NORMAL

During control: Alternating between 10 and 15.5 V

After control: 0 to 0.5 V

K32-10 (SLAC) - K30-1 (GND)

B - W-B

Accumulator valve
  • Engine running
  • Up or Down button of height control switch pushed when vehicle height NORMAL

During control: Alternating between 10 and 15.5 V

After control: 0 to 0.5 V

K32-11 (CRFR) - K30-1 (GND)

G - W-B

Front spring rate switch valve RH
  • Engine running
  • Shift lever in P
  • Down button of height control switch pushed when vehicle height NORMAL

During control: Alternating between 10 and 15.5 V

After control: 0 to 0.5 V

K32-12 (FBL-) - K30-1 (GND)

P - W-B

Front damping force control actuator LH

Engine switch off

12.0 to 13.6 Ω

K32-13 (SHB3) - K30-1 (GND)

B - W-B

Rear height control sensor RH power source

Engine switch on (IG)

4.75 to 5.25 V

K32-14 (SHB2) - K30-1 (GND)

B - W-B

Front height control sensor LH power source

Engine switch on (IG)

4.75 to 5.25 V

K32-15 (SHG2) - K30-1 (GND)

G - W-B

Front height control sensor LH ground

Always

Below 1 Ω

K32-16 (RC) - K30-1 (GND)

G - W-B

Pump motor relay

Engine switch on (IG)

Below 1 V
  • Engine running
  • Up button of height control switch pushed when vehicle height NORMAL

0 to 14 V

K32-17 (FBR-) - K30-1 (GND)

P - W-B

Front damping force control actuator RH

Engine switch off

12.0 to 13.6 Ω

K32-18 (FBR+) - K30-1 (GND)

R - W-B

Front damping force control actuator RH

Engine switch off

12.0 to 13.6 Ω

K32-19 (SHG4) - K30-1 (GND)

G - W-B

Rear height control sensor LH ground

Always

Below 1 Ω

K32-20 (SHG3) - K30-1 (GND)

G - W-B

Rear height control sensor RH ground

Always

Below 1 Ω

K32-22 (SLRL) - K30-1 (GND)

G - W-B

Rear leveling valve LH
  • Engine running
  • Up or Down button of height control switch pushed when vehicle height NORMAL

During control: Alternating between 10 and 15.5 V

After control: 0 to 0.5 V

K32-23 (CRFL) - K30-1 (GND)

B - W-B

Front spring rate switch valve RH
  • Engine running
  • Shift lever in P
  • Down button of height control switch pushed when vehicle height NORMAL

During control: Alternating between 10 and 15.5 V

After control: 0 to 0.5 V

K32-24 (SHRR) - K30-1 (GND)

W - W-B

Rear height control sensor RH

Engine switch on (IG)

0.5 to 4.5 V
  • Engine running
  • Completion of vehicle height control from HI to NORMAL

Approx. 2.5 V

K32-25 (SHB4) - K30-1 (GND)

B - W-B

Rear height control sensor LH power source

Engine switch on (IG)

4.75 to 5.25 V

K32-26 (SHFR) - K30-1 (GND)

L - W-B

Front height control sensor RH

Engine switch on (IG)

0.5 to 4.5 V
  • Engine running
  • Completion of vehicle height control from HI to NORMAL

Approx. 2.5 V

K32-27 (SHRL) - K30-1 (GND)

R - W-B

Rear height control sensor LH

Engine switch on (IG)

0.5 to 4.5 V
  • Engine running
  • Completion of vehicle height control from HI to NORMAL

Approx. 2.5 V

K32-28 (SHR2) - K30-1 (GND)

Y - W-B

Rear height control sensor (for AFS)

Engine switch on (IG)

0.5 to 4.5 V
  • Engine running
  • Completion of vehicle height control from HI to NORMAL

Approx. 2.5 V

K32-29 (SLRG) - K30-1 (GND)

L - W-B

Rear gate valve

Rear Gate Valve item of Active Test activated

ON: Alternating between 10 and 15.5 V

OFF: 0 to 0.5 V

K32-30 (SLFG) - K30-1 (GND)

GR - W-B

Front gate valve

Front Gate Valve item of Active Test activated

ON: Alternating between 10 and 15.5 V

OFF: 0 to 0.5 V

K31-1 (BAT) - K30-1 (GND)

W - W-B

Power supply for damping force control actuator

Always

11 to 14 V

K31-2 (RAL-) - K30-1 (GND)

R - W-B

Rear damping force control actuator LH

Engine switch off

12.0 to 13.6 Ω

K31-3 (RAL+) - K30-1 (GND)

W - W-B

Rear damping force control actuator LH

Engine switch off

12.0 to 13.6 Ω

K31-4 (RBR-) - K30-1 (GND)

G - W-B

Rear suspension control actuator RH

Engine switch off

12.0 to 13.6 Ω

K31-5 (RAR+) - K30-1 (GND)

W - W-B

Rear damping force control actuator RH

Engine switch off

12.0 to 13.6 Ω

K31-6 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

K31-7 (RBL-) - K30-1 (GND)

G - W-B

Rear damping force control actuator LH

Engine switch off

12.0 to 13.6 Ω

K31-8 (RBL+) - K30-1 (GND)

L - W-B

Rear damping force control actuator LH

Engine switch off

12.0 to 13.6 Ω

K31-10 (SPB) - K30-1 (GND)

B - W-B

Fluid pressure sensor power source

Engine switch on (IG)

4.75 to 5.25 V

K31-11 (SHG5) - K30-1 (GND)

P - W-B

Height control sensor ground (for AFS)

Always

Below 1 Ω

K31-12 (SHG1) - K30-1 (GND)

G - W-B

Front height control sensor RH ground

Always

Below 1 Ω

K31-13 (RBR+) - K30-1 (GND)

L - W-B

Rear damping force control actuator RH

Engine switch off

12.0 to 13.6 Ω

K31-14 (RAR-) - K30-1 (GND)

R - W-B

Rear damping force control actuator RH

Engine switch off

12.0 to 13.6 Ω

K31-15 (SHB1) - K30-1 (GND)

B - W-B

Front height control sensor RH power source

Engine switch on (IG)

4.75 to 5.25 V

K31-17 (TOIL) - K30-1 (GND)

W - W-B

Fluid temperature sensor

Engine switch on (IG)

0.15 to 4.79 V

K31-18 (STG) - K30-1 (GND)

G - W-B

Fluid temperature sensor ground

Always

Below 1 Ω

K31-19 (SPG) - K30-1 (GND)

G - W-B

Fluid pressure sensor ground

Always

Below 1 Ω

K31-20 (PACC) - K30-1 (GND)

W - W-B

Fluid pressure sensor

Engine switch on (IG)

0.47 to 4.62 V
  • Engine running
  • While vehicle height changing from NORMAL to LO

Approx. 0.5 V

K31-21 (SHFL) - K30-1 (GND)

W - W-B

Front height control sensor LH

Engine switch on (IG)

0.5 to 4.5 V
  • Engine running
  • Completion of vehicle height control from HI to NORMAL

Approx. 2.5 V

K31-22 (SHF2) - K30-1 (GND)

GR - W-B

Front height control sensor (for AFS)

Engine switch on (IG)

0.5 to 4.5 V
  • Engine running
  • Completion of vehicle height control from HI to NORMAL

Approx. 2.5 V

K31-23 (SHB5) - K30-1 (GND)

L - W-B

Height control sensor power source (for AFS)

Engine switch on (IG)

4.75 to 5.25 V

K30-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

K30-2 (TSW1) - K30-1 (GND)

GR - W-B

Damping mode select switch
  • Engine switch on (IG)
  • Damping mode select switch in normal or "COMF" position

9 to 14 V
  • Engine switch on (IG)
  • Damping mode select switch in "SPORT" position

Below 1.5 V

K30-3 (BAT2) - K30-1 (GND)

R - W-B

Power supply for No. 1 height control valve and front suspension control valve

Always

11 to 14 V

K30-5 (IG) - K30-1 (GND)

G - W-B

IG power supply

Engine switch on (IG)

11 to 14 V

K30-7 (CANH) - K30-8 (CANL)

V - L

CAN communication line

Engine switch off

54 to 69 Ω

K30-9 (TSW2) - K30-1 (GND)

B - W-B

Damping mode select switch
  • Engine switch on (IG)
  • Damping mode select switch in normal or "SPORT" position

9 to 14 V
  • Engine switch on (IG)
  • Damping mode select switch in "COMF" position

Below 1.5 V

K30-10 (LMSW) - K30-1 (GND)

L - W-B

Easy access mode switch
  • Engine switch on (IG)
  • Easy access mode on

Below 1.5 V
  • Engine switch on (IG)
  • Easy access mode off

9 to 14 V

K30-11 (TD) - K30-1 (GND)

W - W-B

Height control OFF switch
  • Engine switch on (IG)
  • Height control off

Below 1.5 V
  • Engine switch on (IG)
  • Height control on

9 to 14 V

K30-13 (SGG2) - K30-1 (GND)

G - W-B

Front acceleration sensor LH ground

Always

Below 1 Ω

K30-14 (SGG1) - K30-1 (GND)

G - W-B

Front acceleration sensor RH ground

Always

Below 1 Ω

K30-15 (SGB1) - K30-1 (GND)

B - W-B

Front acceleration sensor RH power source

Engine switch on (IG)

4.75 to 5.25 V

K30-20 (UPSW) - K30-1 (GND)

LG - W-B

Height control switch (Up)
  • Engine switch on (IG)
  • Up button of height control switch pushed

Below 1.5 V

K30-21 (DNSW) - K30-1 (GND)

G - W-B

Height control switch (Down)
  • Engine switch on (IG)
  • Down button of height control switch pushed

Below 1.5 V

K30-22 (SGFL) - K30-1 (GND)

W - W-B

Front acceleration sensor LH
  • Engine switch on (IG)
  • Vehicle kept still without any vertical movement for 1 second

Approx. 2.5 V

K30-23 (SGB2) - K30-1 (GND)

B - W-B

Front acceleration sensor LH power source

Engine switch on (IG)

4.75 to 5.25 V

K30-24 (SGFR) - K30-1 (GND)

W - W-B

Front acceleration sensor RH
  • Engine switch on (IG)
  • Vehicle kept still without any vertical movement for 1 second

Approx. 2.5 V