Air Suspension System Terminals Of Ecu

  1. CHECK SUSPENSION CONTROL ECU

Air Suspension System -- Terminals Of Ecu



CHECK SUSPENSION CONTROL ECU
HINT:
  1. Inspect the connectors from the back side while the connectors are connected.
  2. Check the operation of a particular valve by listening for an operating sound or by using the Data List.

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Suspension Control.Air Suspension System.Air Suspension System Terminals Of Ecu


Text in Illustration
*a
Component with harness connected
(Suspension Control ECU)
-
-

Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
R19-9 (SLEX) - Body ground
LG
Exhaust valve
Exhaust valve not operating
Below 1 V
Exhaust valve operating
8 V or higher
R19-10 (GND) - Body ground
W-B
Ground
Always
Below 1 Ω
R19-13 (SBR2) - Body ground
R
Rear height control sensor RH power source
Ignition switch ON
4.5 to 5.5 V
R19-14 (SBL2) - Body ground
R
Rear height control sensor LH power source
Ignition switch ON
4.5 to 5.5 V
R19-15 (SGL2) - Body ground
V
Rear height control sensor LH ground
Always
Below 1 Ω
R19-16 (SGR2) - Body ground
W
Rear height control sensor RH ground
Always
Below 1 Ω
R19-22 (RC) - Body ground
G
AIR SUS relay
Compressor motor not operating
Below 1 V
Compressor motor operating
8 V or higher
R19-24 (SHRL) - Body ground
GR
Rear height control sensor LH
Vehicle being raised
Voltage increases within range of 0.5 to 4.5 V in proportion to vehicle height
Vehicle being lowered
Voltage decreases within range of 0.5 to 4.5 V in proportion to vehicle height
R19-26 (SHRR) - Body ground
W
Rear height control sensor RH
Vehicle being raised
Voltage increases within range of 0.5 to 4.5 V in proportion to vehicle height
Vehicle being lowered
Voltage decreases within range of 0.5 to 4.5 V in proportion to vehicle height
R19-27 (SHR2) - Body ground
B
Height control sensor (for AFS ECU)
Vehicle being raised
Voltage increases within range of 0.5 to 4.5 V in proportion to vehicle height
Vehicle being lowered
Voltage decreases within range of 0.5 to 4.5 V in proportion to vehicle height
A14-9 (SBR) - Body ground
G-B
Front acceleration sensor RH power source
Ignition switch ON
4.5 to 5.5 V
A14-10 (SGR) - Body ground
L-Y
Front acceleration sensor RH ground
Always
Below 1 Ω
A14-15 (SLRL) - Body ground
L
Gate solenoid valve (No. 2 height control valve)
Ignition switch ON
Below 1 V
Engine idling, button of height control switch is pushed from "down" to "up"
8 V or higher
A14-16 (SLRR) - Body ground
V
Leveling solenoid valve (No. 2 height control valve)
Ignition switch ON
Below 1 V
Engine idling, button of height control switch is pushed from "down" to "up"
8 V or higher
A14-17 (RM-) - Body ground
G
Motor lock (-)
Always
Below 1 Ω
A14-18 (SGFR) - Body ground
R-L
Front acceleration sensor RH
Ignition switch ON
0.5 to 4.5 V
A14-19 (RM+) - Body ground
P
Motor lock (+)
Engine idling, vehicle height changes from N to HI by pressing height control switch (While height control compressor assembly operating)
Below 1 V
A14-21 (SGL) - Body ground
W
Height control sensor ground (for AFS ECU)
Always
Below 1 Ω
A14-22 (SBL) - Body ground
R-G
Height control sensor power source (for AFS ECU)
Ignition switch ON
4.5 to 5.5 V
A49-1 (IG) - Body ground
B
IG power supply
Ignition switch ON
11 to 14 V
A49-3 (B) - Body ground
GR
Battery power supply
Always
11 to 14 V
A49-5 (GND) - Body ground
W-B
Ground
Always
Below 1 Ω
A49-7 (CANH) - A49-8 (CANL)
R*1 - W
CAN communication line
Ignition switch off
54 to 69 Ω
GR*2 - W
A49-13 (TD) - Body ground
L
Height control OFF switch
  1. Ignition switch ON
  2. Switch pressed and held
11 to 14 V
  1. Ignition switch ON
  2. Switch not pressed
Below 1 V
A49-14 (DNSW) - Body ground
V
Height control switch "down" side
  1. Ignition switch ON
  2. Switch pressed and held
11 to 14 V
  1. Ignition switch ON
  2. Switch not pressed
Below 1 V
A49-15 (UPSW) - Body ground
P
Height control switch "up" side
  1. Ignition switch ON
  2. Switch pressed and held
11 to 14 V
  1. Ignition switch ON
  2. Switch not pressed
Below 1 V
A49-16 (SGR3) - Body ground
R
Rear acceleration sensor ground
Always
Below 1 Ω
A49-17 (SBR3) - Body ground
W
Rear acceleration sensor power source
Ignition switch ON
4.5 to 5.5 V
A49-22 (TSW2) - Body ground
B
Absorber control switch (COMF)
  1. Ignition switch ON
  2. Absorber control switch set to NORMAL
10 to 14 V
  1. Ignition switch ON
  2. Absorber control switch set to COMF
Below 1.5 V
A49-23 (TSW1) - Body ground
G
Absorber control switch (SPORT)
  1. Ignition switch ON
  2. Absorber control switch set to NORMAL
10 to 14 V
  1. Ignition switch ON
  2. Absorber control switch set to SPORT
Below 1.5 V
A49-26 (SGRR) - Body ground
LG
Rear acceleration sensor
Ignition switch ON
0.5 to 4.5 V
  1. *1: for RHD
  2. *2: for LHD