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Terminals Of Ecu

WARNING: This page is about a different car, the 2006 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 Terminals
    G04440309Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance of the connectors.
      TERMINAL DESCRIPTION AND CONDITION

      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-O - 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 IG1 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
      WT (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
      WT (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 input 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 input 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-R 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
    G04440310Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage of the connector.
      TERMINAL DESCRIPTION AND CONDITION

      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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