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Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control >> Active Height Control Suspension >> Terminals Of Ecu

Terminals Of Ecu

  1. CHECK SUSPENSION CONTROL ECU 

    HINT:

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

    Fig 1: Identifying Suspension Control ECU Connectors Terminals
    G05761286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL DESCRIPTION

    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 clamping force control actuator LH Engine switch off 12.0 to 13.6 Ω
    K32-3 (FAL-) - K30-1 (GND) L - W-B Front clamping 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 155V 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 5V
    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
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