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Home >> Scion >> 2004 >> xA Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - Diagnostics >> Terminals Of Ecu

Terminals Of Ecu

Fig 1: Identifying ECU Terminals
G03367260Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TERMINAL SYMBOLS

Symbols (Terminal No.) Wiring Color Terminal Description Condition STD Voltage (V)
+BS (S1-1) - GND (S1-2, 24) B - W-B Solenoid Relay Test Input Always 11 to 14
FL+ (S1-9) - FL- (S1-8) R - G Front LH Wheel Speed Signal Input IG Switch ON, Slowly Turn Left Front Wheel AC Generation
FR+ (S1-31) - FR- (S1-30) G-W - G-O Front RH Wheel Speed Signal Input IG Switch ON, Slowly Turn Right Front Wheel AC Generation
RL+ (S1-11) - RL- (S1-12) Y-B - P-B Rear LH Wheel Speed Signal Output IG Switch ON, Slowly Turn Left Rear Wheel AC Generation
RR+ (S1-33) - RR- (S1-34) LG-B - LG-R Rear RH Wheel Speed Signal Input IG Switch ON, Slowly Turn Right Rear Wheel AC Generation
BRL (S1-32) - GND (S1-2, 24) B-Y - W-B Brake Warning Light Output IG Switch ON, Brake Warning Light ON 8 to 14
D/G (S1-14) - GND (S1-2, 24) W - W-B Diagnosis Tester Communication Line IG Switch ON 11 to 14
Tc (S1-16) - GND (S1-2, 24) P-B - W-B Diagnosis Tester Communication Line IG Switch ON 11 to 14
STP (S1-10) - GND (S1-2, 24) G-W - W-B Stop Lamp Relay Output Stop Light Switch ON 8 to 14
+BM (S1-23) - GND (S1-2, 24) B - W-B Motor Relay Test Input Always 11 to 14
IG1 (S1-25) - GND (S1-2, 24) B-L - W-B IG1 Power Supply IG Switch ON 11 to 14
WA (S1-13) - GND (S1-2, 24) P - W-B ABS Warning Output IG Switch ON, ABS Warning Light ON 8 to 14
SP1 (S1-26) - GND (S1-2, 24) W-R - W-B Speed Signal Output Vehicle Driving At About 20 km/h (12 mph) AC Generation
PKB (S1 18) GND (S1-2, 24) Y-R - W-B Parking Brake Switch Input IG Switch ON, Parking Brake Switch ON Below 1.5
IG Switch On, Parking Brake Switch OFF 11 to 14