GSIC - Global Service Information Center

# ANTI-LOCK BRAKE SYSTEM > TERMINALS OF ECU

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CHECK SKID CONTROL ECU ASSEMBLY WITH ACTUATOR (BRAKE ACTUATOR ASSEMBLY)

1. Measure the voltage of the wire harness side connector.

   Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition
   +BS (S2-1) - GND (S2-2, 24) | W-R - W-B | Solenoid relay power supply | Always | 10 to 14 V
   EXI4*1 (S2-3) - GND (S2-2, 24) | G-W - W-B | L4 switch input | Ignition switch ON, L4 switch ON | Below 1.5 V
   EXI4*1 (S2-3) - GND (S2-2, 24) | G-W - W-B | L4 switch input | Ignition switch ON, L4 switch OFF | 8 to 14 V
   GL1*1 (S2-4) - GND (S2-2, 24) | R - W-B | Deceleration sensor input | Ignition switch ON, vehicle is stopped | 0.5 to 4.5 V
   GGND*1 (S2-7) - GND (S2-2, 24) | B - W-B | Deceleration sensor GND | Ignition switch OFF | Below 1.5 V
   FL+ (S2-9) - FL (S2-8) | R - G | Front speed sensor LH input | Ignition switch ON, slowly turn left front wheel | Pulse generation
   STP (S2-10) - GND (S2-2, 24) | G-W - W-B | Stop light switch input | Stop light switch ON | 8 to 14 V
   STP (S2-10) - GND (S2-2, 24) | G-W - W-B | Stop light switch input | Stop light switch OFF | Below 1.5 V
   RL+ (S2-11) - RL (S2-12) | P - L | Rear speed sensor LH input | Ignition switch ON, slowly turn left rear wheel | Pulse generation
   WA (S2-13) - GND (S2-2, 24) | R-G - W-B | ABS warning light output | Ignition switch ON, ABS warning light ON | 9 to 14 V
   WA (S2-13) - GND (S2-2, 24) | R-G - W-B | ABS warning light output | Ignition switch ON, ABS warning light OFF | Below 1 V
   D/G (S2-14) - GND (S2-2, 24) | L-Y - W-B | Diagnosis tester communication line | Ignition switch ON | 10 to 14 V
   TS (S2-15) - GND (S2-2, 24) | W - W-B | Terminal TS of DLC3 | Ignition switch ON, ABS warning light OFF | Below 1.5 V
   TS (S2-15) - GND (S2-2, 24) | W - W-B | Terminal TS of DLC3 | Ignition switch ON, ABS warning light ON | 10 to 14 V
   TC (S2-16) - GND (S2-2, 24) | P-L - W-B | Terminal TS of DLC3 | Ignition switch ON, ABS warning light OFF | Below 1.5 V
   TC (S2-16) - GND (S2-2, 24) | P-L - W-B | Terminal TS of DLC3 | Ignition switch ON, ABS warning light ON | 10 to 14 V
   EXI*2 (S2-17) - GND (S2-2, 24) | R-B - W-B | Differential vacuum actuator switch input | Ignition switch ON, differential vacuum actuator switch ON | Below 1.5 V
   EXI*2 (S2-17) - GND (S2-2, 24) | R-B - W-B | Differential vacuum actuator switch input | Ignition switch ON, differential vacuum actuator switch OFF | 10 to 14 V
   PKB (S2-18) - GND (S2-2, 24) | L-O - W-B | Parking brake switch input | Ignition switch ON, parking brake switch ON | Below 1.5 V
   PKB (S2-18) - GND (S2-2, 24) | L-O*3 - W-B LG*4 - W-B | Parking brake switch input | Ignition switch ON, parking brake switch OFF | 10 to 14 V
   EXI2 (S2-22) - GND (S2-2, 24) | V - W-B | IG1 power supply | Ignition switch ON | 10 to 14 V
   +BM (S2-23) - GND (S2-2, 24) | R - W-B | Motor relay power supply | Always | 10 to 14 V
   IG1 (S2-25) - GND (S2-2, 24) | B - W-B | IG1 power supply | Ignition switch ON | 10 to 14 V
   VGS*1 (S2-28) - GND (S2-2, 24) | W - W-B | Deceleration sensor input | Ignition switch ON, vehicle is stopped | 4.75 to 5.25 V
   FR+ (S2-31) - FR (S2-30) | L-W - O | Front speed sensor RH input | Ignition switch ON, slowly turn right front wheel | Pulse generation
   RR+ (S2-33) - RR (S2-34) | G - R | Rear speed sensor RH input | Ignition switch ON, slowly turn right rear wheel | Pulse generation

   HINT:
     If the result is not as specified, there may be a malfunction in the skid control ECU.
   *1: 4WD
   *2: 4WD RHD
   *3: 1GR-FE
   *4: Except 1GR-FE