AIR SUSPENSION SYSTEM TERMINALS OF ECU

Tech Tips

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


  1. CHECK SUSPENSION CONTROL ECU

    A01GXHDE01
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    L88-1 (B) - L88-4 (GND) W - W-B IG power supply Power switch ON (IG) 11 to 14 V
    L88-4 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    L88-5 (SLEX) - L88-4 (GND) L - W-B Exhaust valve Power switch ON (IG) Below 1 V
    Power switch ON (READY), height control switch from "HEIGHT HIGH" to NORMAL 8 V or more
    L88-6 (RC) - L88-4 (GND) BE - W-B Suspension control relay Power switch ON (IG) Below 1 V
    Power switch ON (READY), height control switch from NORMAL to "HEIGHT HIGH" during compressor operation 8 V or more
    L88-7 (CANH) - L88-8 (CANL) B - W CAN communication line Power switch OFF 54 to 69 Ω
    L88-14 (TD) - L88-4 (GND) BE - W-B Height control is not operating Power switch ON (IG) 11 to 14 V
    L88-16 (SLFR) - L88-4 (GND) R - W-B No. 1 height control valve RH Power switch ON (IG) Below 1 V
    Power switch ON (READY), height control switch from NORMAL to "HEIGHT HIGH" or reverse 8 V or more
    L88-17 (SLFL) - L88-4 (GND) W - W-B No. 1 height control valve LH Power switch ON (IG) Below 1 V
    Power switch ON (READY), height control switch from NORMAL to "HEIGHT HIGH" or reverse 8 V or more
    L88-18 (SBL1) - L88-4 (GND) R - W-B Front height control sensor LH power source Power switch ON (IG) 4.5 to 5.5 V
    L88-20 (SBR1) - L88-4 (GND) V - W-B Front height control sensor RH power source Power switch ON (IG) 4.5 to 5.5 V
    L88-21 (SGR1) - L88-4 (GND) R - W-B Front height control sensor RH ground Always Below 1 Ω
    L88-22 (SGL1) - L88-4 (GND) LG - W-B Front height control sensor LH ground Always Below 1 Ω
    L88-25 (SLRL) - L88-4 (GND) G - W-B No. 2 height control valve LH Power switch ON (IG) Below 1 V
    Power switch ON (READY), height control switch from NORMAL to "HEIGHT HIGH" or reverse 8 V or more
    L88-26 (SLRR) - L88-4 (GND) Y - W-B No. 2 height control valve RH Power switch ON (IG) Below 1 V
    Power switch ON (READY), height control switch from NORMAL to "HEIGHT HIGH" or reverse 8 V or more
    A39-3 (FBR+) - L88-4 (GND) R - W-B Absorber control actuator (for Front RH) Power switch OFF 12.0 to 12.8 Ω
    A39-4 (FBR-) - L88-4 (GND) LG - W-B Absorber control actuator (for Front RH) Power switch OFF 12.0 to 12.8 Ω
    A39-9 (FAR+) - L88-4 (GND) BE - W-B Absorber control actuator (for Front RH) Power switch OFF 12.0 to 12.8 Ω
    A39-11 (FAR-) - L88-4 (GND) R - W-B Absorber control actuator (for Front RH) Power switch OFF 12.0 to 12.8 Ω
    A39-13 (FAL+) - L88-4 (GND) L - W-B Absorber control actuator (for Front LH) Power switch OFF 12.0 to 12.8 Ω
    A39-14 (FAL-) - L88-4 (GND) R - W-B Absorber control actuator (for Front LH) Power switch OFF 12.0 to 12.8 Ω
    A39-15 (FBL+) - L88-4 (GND) W - W-B Absorber control actuator (for Front LH) Power switch OFF 12.0 to 12.8 Ω
    A39-16 (FBL-) - L88-4 (GND) BE - W-B Absorber control actuator (for Front LH) Power switch OFF 12.0 to 12.8 Ω
    A39-17 (RM+) - L88-4 (GND) Y - W-B Motor lock (+) Power switch ON (READY), height control switch from NORMAL to "HEIGHT HIGH" during compressor operation Below 1 V
    Power switch ON (READY), height control compressor not operating 8 V or higher
    A39-18 (RM-) - L88-4 (GND) B - W-B Motor lock (-) Always Below 1 Ω
    A39-19 (SHR2) - L88-4 (GND) LG - W-B Height control sensor (for AFS ECU) Power switch ON (IG) 0.5 to 4.5 V
    Power switch ON (READY), completion of vehicle height control from "HEIGHT HIGH" to NORMAL Approx. 2.5 V
    A39-20 (SHFR) - L88-4 (GND) B - W-B Front height control sensor RH Power switch ON (IG) 0.5 to 4.5 V
    Power switch ON (READY), completion of vehicle height control from "HEIGHT HIGH" to NORMAL Approx. 2.5 V
    A39-21 (SHF2) - L88-4 (GND) L - W-B Height control sensor (for AFS ECU) Power switch ON (IG) 0.5 to 4.5 V
    Power switch ON (READY), completion of vehicle height control from "HEIGHT HIGH" to NORMAL Approx. 2.5 V
    A39-22 (SHFL) - L88-4 (GND) L - W-B Front height control sensor LH Power switch ON (IG) 0.5 to 4.5 V
    Power switch ON (READY), completion of vehicle height control from "HEIGHT HIGH" to NORMAL Approx. 2.5 V
    A39-23 (SBL3) - L88-4 (GND) BR - W-B Height control sensor power source (for AFS ECU) Power switch ON (IG) 4.5 to 5.5 V
    A39-24 (SGL3) - L88-4 (GND) GR - W-B Height control sensor ground (for AFS ECU) Always Below 1 Ω
    R1-3 (RAR-) - L88-4 (GND) G - W-B Absorber control actuator (for Rear RH) Power switch OFF 12.0 to 12.8 Ω
    R1-4 (RBR+) - L88-4 (GND) LG - W-B Absorber control actuator (for Rear RH) Power switch OFF 12.0 to 12.8 Ω
    R1-5 (RBR-) - L88-4 (GND) P - W-B Absorber control actuator (for Rear RH) Power switch OFF 12.0 to 12.8 Ω
    R1-6 (RAL+) - L88-4 (GND) L - W-B Absorber control actuator (for Rear LH) Power switch OFF 12.0 to 12.8 Ω
    R1-7 (RAL-) - L88-4 (GND) G - W-B Absorber control actuator (for Rear LH) Power switch OFF 12.0 to 12.8 Ω
    R1-8 (RBL+) - L88-4 (GND) BE - W-B Absorber control actuator (for Rear LH) Power switch OFF 12.0 to 12.8 Ω
    R1-11 (SGFL) - L88-4 (GND) L - W-B Acceleration sensor (for Front) Power switch ON (IG), keep vehicle still without any vertical movement for 1 second Approx. 2.5 V
    R1-12 (SGR3) - L88-4 (GND) LG - W-B Acceleration sensor (for Rear) ground Always Below 1 Ω
    R1-13 (RAR+) - L88-4 (GND) Y - W-B Absorber control actuator (for Rear RH) Power switch OFF 12.0 to 12.8 Ω
    R1-15 (SBR3) - L88-4 (GND) BE - W-B Acceleration sensor (for Rear) power source Power switch ON (IG) 4.5 to 5.5 V
    R1-16 (SBL) - L88-4 (GND) R - W-B Acceleration sensor (for Front) power source Power switch ON (IG) 4.5 to 5.5 V
    R1-20 (RBL-) - L88-4 (GND) BR - W-B Absorber control actuator (for Rear LH) Power switch OFF 12.0 to 12.8 Ω
    R1-21 (CA2L) - R1-22 (CA2H) W - B CAN communication line Power switch OFF 54 to 69 Ω
    R1-23 (SGL2) - L88-4 (GND) GR - W-B Rear height control sensor LH ground Always Below 1 Ω
    R1-24 (SBL2) - L88-4 (GND) BR - W-B Rear height control sensor LH power source Power switch ON (IG) 4.5 to 5.5 V
    R1-25 (SGR2) - L88-4 (GND) V - W-B Rear height control sensor RH ground Always Below 1 Ω
    R1-26 (SBR2) - L88-4 (GND) B - W-B Rear height control sensor RH power source Power switch ON (IG) 4.5 to 5.5 V
    R1-27 (SGRR) - L88-4 (GND) BR - W-B Acceleration sensor (for Rear) Power switch ON (IG), keep vehicle still without any vertical movement for 1 second Approx. 2.5 V
    R1-28 (SHRR) - L88-4 (GND) P - W-B Rear height control sensor RH Power switch ON (IG) 0.5 to 4.5 V
    Power switch ON (READY), completion of vehicle height control from "HEIGHT HIGH" to NORMAL Approx. 2.5 V
    R1-29 (SGL) - L88-4 (GND) V - W-B Acceleration sensor (for Front) ground Always Below 1 Ω
    R1-30 (SHRL) - L88-4 (GND) LG - W-B Rear height control sensor LH Power switch ON (IG) 0.5 to 4.5 V
    Power switch ON (READY), completion of vehicle height control from "HEIGHT HIGH" to NORMAL Approx. 2.5 V