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Terminals Of Ecu

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK SKID CONTROL ECU 
    Fig 1: Identifying Skid Control ECU Connector Terminal
    G05197587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance of the connectors.
    VOLTAGE CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    SA1(A41-2)-GND(A41-6, 31, A42-8, 17) G-W-B Front RH ABS switching solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    SA2(A41-3)-GND(A41-6, 31, A42-8, 17) B-W-B Front LH ABS switching solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    SA3(A41-4)-GND(A41-6, 31, A42-8, 17) G-W - W-B Rear ABS switching solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    STR(A41-5)-GND(A41-6, 31, A42-8, 17) G-Y - W-B VSC switching solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    SFLR(A41-7)-GND(A41-6, 31, A42-8, 17) B-Y - -W-B Front left decompression solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    SRRH(A41-8)-GND(A41-6, 31, A42-8, 17) W-W-B Rear right holding solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    SRRR(A41-9)-GND(A41-6, 31, A42-8, 17) B-0 - W-B Rear right decompression solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    VCM(A41-10)-E2(A41-12) B-W Master cylinder pressure sensor power source Ignition switch ON 4.5 to 5.5 V
    PH(A41-11)-GND(A41-6, 31, A42-8, 17) O-W-B Pressure switch (high) input Ignition switch ON, pressure switch (PH) ON Below 1 V
    PH(A41-11)-GND(A41-6, 31, A42-8, 17) O-W-B Pressure switch (high) input Ignition switch ON, pressure switch (PH) OFF 5 to 8 V
    FR+(A41-14)-FR-(A41-13) L-P Front right wheel speed sensor input Ignition switch ON, slowly turn right front wheel Pulse generation
    FL+(A41-16)-FL-(A41-15) R-G Front left wheel speed sensor input Ignition switch ON, slowly turn left front wheel Pulse generation
    SR(A41-19)-R1+(A41-1) G-Y-P Solenoid relay output Ignition switch ON, ABS warning light OFF 10 to 14 V
    SFLH(A41-21)-GND(A41-6, 31, A42-8, 17) Y-W-B Front left holding solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    PMC(A41-22)-E2(A41-12) R-W Master cylinder pressure sensor input Ignition switch ON, stop light switch OFF 0.3 to 0.7 V
    E2(A41-12)-GND(A41-6, 31, A42-8, 17) W-W-B ACC pressure sensor ground Ignition switch OFF Below 1 Ω
    MTT(A41-27)-GND(A41-6, 31, A42-8, 17) B-R - W-B Motor test input Ignition switch ON (Motor relay is OFF) Below 1.5 V
    MT+(A41-28)-MT-(A41-18) L-GR Motor relay input Ignition switch ON Below 1.5 V
    MR1 (A41-29)-R1+(A41-1) R-P Motor relay output 1 Ignition switch ON, hydraulic brake booster pump motor ON 10 to 14 V
    WA(A42-1)-GND(A41-6, 31, A42-8, 17) R-L-W-B ABS warning light output Ignition switch ON, ABS warning light OFF Below 2.0 V
    BZ(A42-2)-GND(A41-6, 31, A42-8, 17) L-W-B VSC buzzer output Ignition switch ON, VSC buzzer is sounded Below 1.5 V
    D/G(A42-3)-GND(A41-6, 31, A42-8, 17) V-W-W-B Diagnostics tester communication line Ignition switch ON 10 to 14 V
    P(A42-5)-GND(A41-6, 31, A42-8, 17) G-W-W-B Shift position indicator "P" input Ignition switch ON, shift lever is in P position 10 to 14 V
    IG1(A42-6)-GND(A41-6, 31, A42-8, 17) B-W-W-B 1G1 power source Ignition switch ON 10 to 14 V
    STP(A42-10)-GND(A41-6, 31, A42-8, 17) G-W-W-B Stop light switch input Stop light switch OFF Below 1.5 V
    STP(A42-10)-GND(A41-6, 31, A42-8, 17) G-W-W-B Stop light switch input Stop light switch ON 10 to 14 V
    TC(A42-11)-GND(A41-6, 31, A42-8, 17) P-B-W-B Terminal TC of DLC3 Ignition switch OFF Below 1 V
    TC(A42-11)-GND(A41-6, 31, A42-8, 17) P-B-W-B Terminal TC of DLC3 Ignition switch ON 10 to 14 V
    TS(A42-12)-GND(A41-6, 31, A42-8, 17) W-W-B Terminal TS of DLC3 Ignition switch OFF Below 1 V
    TS(A42-12)-GND(A41-6, 31, A42-8, 17) W-W-B Terminal TS of DLC3 Ignition switch ON 10 to 14 V
    PKB(A42-13)-GND(A41-6, 31, A42-8, 17) R-W-W-B Parking brake switch input Ignition switch ON, parking brake switch ON Below 1.5 V
    PKB(A42-13)-GND(A41-6, 31, A42-8, 17) R-W-W-B Parking brake switch input Ignition switch ON, parking brake switch OFF 10 to 14 V
    ENG+(A42-14)-ENG-(A42-22) R-G Translate ECU communication input Ignition switch ON Pulse generation
    RL+(A42-18)-RL-(A42-19) R-G Rear left wheel speed sensor input Ignition switch ON, slowly turn left rear wheel Pulse generation
    RR+(A42-20)-RR-(A42-21) B-W Rear right wheel speed sensor input Ignition switch ON, slowly turn right rear wheel Pulse generation
    TRC+(A42-24)-TRC-(A42-16) Y-L Translate ECU communication output Ignition switch ON Pulse generation
    EXI2(A43-2)-GND(A41-6, 31, A42-8, 17) B-L-W-B L4 switch input Ignition switch ON, L4 switch ON 8 to 14 V
    EXI2(A43-2)-GND(A41-6, 31, A42-8, 17) B-L-W-B L4 switch input Ignition switch ON, L4 switch OFF Below 1.5 V
    EXI(A43-3)-GND(A41-6, 31, A42-8, 17) P-B-W-B Center differential lock switch input Ignition switch ON, differential lock switch ON Below 1.5 V
    EXI(A43-3)-GND(A41-6, 31, A42-8, 17) P-B-W-B Center differential lock switch input Ignition switch ON, differential lock switch OFF 10 to 14 V
    VSCW(A43-4)-GND(A41-6, 31, A42-8, 17) L-W-W-B VSC TRAC warning light output Ignition switch ON, VSC TRAC warning light ON Below 2.0 V
    VSCW(A43-4)-GND(A41-6, 31, A42-8, 17) L-W-W-B VSC TRAC warning light output Ignition switch ON, VSC TRAC warning light OFF 10 to 14 V
    BRL(A43-5)-GND(A41-6, 31, A42-8, 17) Y-G-W-B BRAKE warning light output Ignition ON, BRAKE warning light ON 10 to 14 V
    BRL(A43-5)-GND(A41-6, 31,A42-8, 17) Y-G-W-B BRAKE warning light output Ignition ON, BRAKE warning light OFF Below 2.0 V
    IND(A43-6)-GND(A41-6, 31, A42-8, 17) L-B-W-B SLIP indicator light input Ignition switch ON, SLIP indicator light ON Below 2.0 V
    IND(A43-6)-GND(A41-6, 31, A42-8, 17) L-B-W-B SLIP indicator light input Ignition switch ON, SLIP indicator light OFF 10 to 14 V
    VVT(A43-7)-GND(A41-6, 31, A42-8, 17) L-R-W-B VSC OFF indicator light input Ignition switch ON, DSC OFF indicator light ON Below 2.0 V
    VVT(A43-7)-GND(A41-6, 31, A42-8, 17) L-R-W-B VSC OFF indicator light input Ignition switch ON, VSC OFF indicator light OFF 10 to 14 V
    VYS(A43-9)-GYAW(A43-27) B-R Yaw rate sensor power supply Ignition switch ON 4.5 to 5.5 V
    GL2(A43-10)-GYAW(A43-27) Y-R Decelerate sensor input2 Ignition switch ON, vehicle is on level surface 2.0 to 3.0 V
    SS1+(A43-14)-SS1-(A43-23) W-G Steering sensor (+) input Engine idling, slowly turn steering wheel Pulse generation
    INFR(A43-15)-GND(A41-6, 31, A42-8, 17) B-R-W-B VSC TRAC indicator light input Ignition switch ON, VSC TRAC indicator light ON Below 1.5 V
    INFR(A43-15)-GND(A41-6, 31, A42-8, 17) B-R-W-B VSC TRAC indicator light input Ignition switch ON, VSC TRAC indicator light OFF 10 to 14 V
    YD(A43-19)-GND(A41-6, 31, A42-8, 17) L-W-B Yaw rate signal diagnosis output Approximately 1 sec. after ignition switch ON 4.5 to 5.3 V
    GL1(A43-22)-GYAW(A43-27) G-R Decelerate sensor input1 Ignition switch ON, vehicle is on level surface 2.0 to 3.0 V
    GYAW(A43-27)-GND(A41-6, 31, A42-8, 17) R-W-B Yaw rate sensor ground Ignition switch OFF Below 1 Ω
    YAW(A43-28)-GYAW(A43-27) W-R Yaw rate sensor input Ignition switch ON, vehicle is in stationary condition 2 to 3 V
    SRLR(A44-1)-GND(A41-6, 31, A42-8, 17) R-G-W-B Rear left decompression solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    MR2(A44-2)-R2+(A44-3) Y-B-W-L Motor relay output Ignition switch ON, hydraulic brake booster pump motor stops 10 to 14 V
    AST(A44-6)-GND(A41-6, 31, A42-8, 17) R-Y-W-B Solenoid relay test input Ignition switch ON, ABS warning light OFF 10 to 14 V
    SRLH(A44-7)-GND(A41-6, 31, A42-8, 17) R-W-W-B Rear left holding solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    SFRR(A44-8)-GND(A41-6, 31, A42-8, 17) B-W-W-B Front right decompression solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    PL(A44-9)-GND(A41-6, 31, A42-8, 17) W-W-B Pressure switch (Low) input Ignition switch ON, pressure switch (PL) ON 3 to 5 V
    PL(A44-9)-GND(A41-6, 31, A42-8, 17) W-W-B Pressure switch (Low) input Ignition switch ON, pressure switch (PL) OFF 7 to 11 V
    SFRH(A44-16)-GND(A41-6, 31, A42-8, 17) LG-W-B Front right holding solenoid output Ignition switch ON, ABS warning light OFF 10 to 14 V
    TRIG(A44-20)-GND(A41-6, 31, A42-8, 17) L-R-W-B Steering sensor trigger output Ignition switch ON, ABS warning light OFF 10 to 14 V
    +BO(A44-21)-GND(A41-6, 31, A42-8, 17) LG-W-B Steering sensor power source Ignition switch ON, ABS warning light OFF 10 to 14 V
    IG2(A44-22)-GND(A41-6, 31, A42-8, 17) B-R-W-B IG2 power source Ignition switch ON 10 to 14 V
  2. CHECK TRANSLATE ECU 
    Fig 2: Identifying Translate ECU Terminals
    G05197588Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage of the connector.
    VOLTAGE CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    IG1(T29-1)-GND(T29-40) B-W-W-B IG1 power source Ignition switch ON 10 to 14 V
    CANH(T29-7)-CANL(T29-10) R-W Multiplex communication line Ignition switch ON Pulse generation
    ENG+(T29-14)-ENG-(T29-15) R-G ECM communication line Ignition switch ON Pulse generation
    TRC+(T29-16)-TRC-(T29-17) Y-L ECM communication line Ignition switch ON Pulse generation
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