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Terminals Of Ecu

Fig 1: Identifying Terminals Of ECU
G03149457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
ECU TERMINAL SPECIFICATIONS

Symbols (Terminals No.) Wiring Color Condition STD Voltage (V)
SRLR (A37 - 1) - GND (A38 - 6, 31, A39 - 8, 17) B-O <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
AST (A37 - 6) - GND (A38 - 6, 31, A39 - 8, 17) B-Y <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SRLH (A37 - 7) - GND (A38 - 6, 31, A39 - 8, 17) Y-B <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SFRR (A37 - 8) - GND (A38 - 6, 31, A39 - 8, 17) BR-W <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SMV2 (A37 - 15) - GND (A38 - 6, 31, A39 - 8, 17) R <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SFRH (A37 - 16) - GND (A38 - 6, 31, A39 - 8, 17) V-W <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
RLO (A37 - 18) - GND (A38 - 6, 31, A39 - 8, 17) P-L <-> W-B Vehicle Driving At About 20 km/h (12 MPH) Pulse Generation
SMV1 (A37 - 22) - GND (A38 - 6, 31, A39 - 8, 17) W-L <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SMC1 (A38 - 2) - GND (A38 - 6, 31, A39 - 8, 17) L-Y <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SMC2 (A38 - 3) - GND (A38 - 6, 31, A39 - 8, 17) G-B <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SRC1 (A38 - 4) - GND (A38 - 6, 31, A39 - 8, 17) R-Y <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SRC2 (A38 - 5) - GND (A38 - 6, 31, A39 - 8, 17) GR-R <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SFLR (A38 - 7) - GND (A38 - 6, 31, A39 - 8, 17) R-B <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SRRH (A38 - 8) - GND (A38 - 6, 31, A39 - 8, 17) BR-Y <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
SRRR (A38 - 9) - GND (A38 - 6, 31, A39 - 8, 17) GR-L <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
VCM (A38 - 10) - GND (A38 - 6, 31, A39 - 8, 17) B <-> W-B IG Switch ON 4.5 - 5.5
FR+ (A38 - 14) - FR- (A38 - 13) V <-> P IG Switch ON, Slowly Turn Right Front Wheel AC Generation
FL+ (A38 - 16) - FL- (A38 - 15) LG <-> L IG Switch ON, Slowly Turn Left Front Wheel AC Generation
SR (A38 - 19) - R+ (A38 - 1) Y-G <-> GR IG Switch ON, ABS Warning Light OFF 10 - 14
SFLH (A38 - 21) - GND (A38 - 6, 31, A39 - 8, 17) G <-> W-B IG Switch ON, ABS Warning Light OFF 10 - 14
PMC (A38 - 22) - E2 (A38 - 23) W <-> R IG Switch ON, Stop Light Switch OFF 0.3 - 0.7
E2 (A38 - 23) - GND (A38 - 6, 31, A39 - 8, 17) R <-> W-B IG Switch OFF Continuity
FSS (A38 - 24) - GND (A38 - 6, 31, A39 - 8, 17) Shielded <-> W-B IG Switch OFF Continuity
MT (A38 - 28) - GND (A38 - 6, 31, A39 - 8, 17) LG-B <-> W-B IG Switch ON (Motor Relay Is OFF) Below 1.5
MR (A38 - 29) - GND (A38 - 6, 31, A39 - 8, 17) B-W <-> W-B IG Switch ON, ABS Motor Stops 10 - 14
VGS (A39 - 1) - GGND (A39 - 10) R <-> B IG Switch ON 4.5 - 5.5
GL 1 (A39 - 2) - GGND (A39 - 10) W <-> B IG Switch ON, Vehicle Is Placed On The Horizontal Surface 2 - 3
Tc (A39 - 3) - GND (A38 - 6, 31, A39 - 8, 17) P-B <-> W-B IG switch ON 10 - 14
Ts (A39 - 4) - GND (A38 - 6, 31, A39 - 8, 17) W-L <-> W-B IG Switch ON 10 - 14
IG1 (A39 - 6) - GND (A38 - 6, 31, A39 - 8, 17) B-R <-> W-B IG Switch ON 10 - 14
NEO (A39 - 7) - GND (A38 - 6, 31, A39 - 8, 17) L-O <-> W-B Engine Idling Pulse Generation
GL2 (A39 - 9) - GGND (A39 - 10) G <-> B IG Switch ON, Vehicle Is Placed On The Level Surface 2.0 - 3.0
GGND (A39 - 10) - GND (A38 - 6, 31, A39 - 8, 17) B <-> W-B IG Switch OFF Continuity
RR+ (A39 - 11) - RR- (A39 - 12) GR-R <-> L IG Switch ON, Slowly Turn Right Rear Wheel AC Generation
ENG+ (A39 - 14) - ENG- (A39 - 22) R-Y <-> BR-W IG Switch ON, Engine Idling Pulse Generation
GSS (A39 - 18) - GND (A38 - 6, 31, A39 - 8, 17) Shielded <-> W-B IG Switch OFF Continuity
RL+ (A39 - 19) - RL- (A39 - 20) L-Y <-> L-W IG Switch ON, Slowly Turn Left Rear Wheel AC Generation
PKB (A39-15) - GND (A38-6, 31, A39 - 8, 17) R-L <-> W-B IG Switch ON, Parking Brake Switch ON Below 2.0
IG Switch ON, Parking Brake Switch OFF 10 - 14
TRC+ (A39 - 24) - TRC- (A39 - 16) GR <-> P-B IG Switch ON, Engine Idling Pulse Generation
BRL (A40 - 1) - GND (A38 - 6, 31, A39 - 8, 17) G <-> W-B IG Switch ON, Fluid In Master Cylinder Reservoir Above MIN Level And Parking Brake Switch Is OFF (Brake Warning Light Is OFF) 10 - 14
RRO (A40 - 3) - GND (A38 - 6, 31, A39 - 8, 17) V <-> W-B Vehicle Driving At About 20 km/h (12 MPH) Pulse Generation
VSCW (A40 - 4) - GND (A38 - 6, 31, A39 - 8, 17) W-G <-> W-B IG Switch ON, VSC Warning Light ON Below 2.0
IG Switch ON, VSC Warning Light OFF 10 - 14
WA (A40 - 5) - GND (A38 - 6, 31, A39 - 8, 17) B-Y <-> W-B IG Switch ON, ABS Warning Light ON Below 2.0
IG Switch ON, ABS Warning Light OFF 10 - 14
IND (A40 - 6) - GND (A38 - 6, 31, A39 - 8, 17) W-L <-> W-B IG Switch ON, SLIP Indicator Light ON Below 2.0
IG Switch ON, SLIP Indicator Light OFF 10 - 14
STP (A40 - 7) - GND (A38 - 6, 31, A39 - 8, 17) G-Y <-> W-B Stop Light Switch OFF Below 1.5
Stop Light Switch ON 8 - 14
VYS (A40 - 9) - GYAW (A40 - 27) R-L <-> R-W IG Switch ON 4.5 - 5.5
LBL (A40 - 11) - GND (A38 - 6, 31, A39 - 8, 17) R-W <-> W-B IG Switch ON, Fluid In Master Cylinder Reservoir Above MIN Level About 4 - 8
SS1+ (A40 - 14) - SS1- (A40 - 23 LG-B <-> LG Engine Idling, Slowly Turn Steering Wheel Pulse Generation (See DTC C1231/31 Steering Angle Sensor Circuit  )
WT (A40 - 13) (1) - GND (A38 - 6, 31, A39-8, 17) P <-> W-B IG Switch ON, TRAC OFF Indicator Light ON Below 2.0
IG Switch ON, TRAC OFF Indicator Light OFF 10 - 14
R (A40 - 15) - GND (A38 - 6, 31, A39 - 8, 17) R-B <-> W-B IG Switch ON, Shift Lever Is In R Position 8 - 14
IG Switch ON, Shift Lever Is In Other Than R Position Below 1.5
SP1 (A40 - 16) - GND (A38 - 6, 31, A39 - 8, 17) R-B <-> W-B Vehicle Driving At About 20 km/h (12 MPH) Pulse Generation
YSS (A40 - 18) - GND (A38 - 6, 31, A39 - 8, 17) Shielded <-> W-B IG Switch OFF Continuity
YD (A40 - 19) - GND (A38 - 6, 31, A39 - 8, 17) W-R <-> W-B IG Switch ON, VSC Warning Light OFF 4.5 - 5.5
BZ (A40 - 20) - GND (A38 - 6, 31, A39 - 8, 17) G-O <-> W-B IG Switch ON, VSC Buzzer Sounds Below 1.0 <-> 10 - 14
IG Switch ON, VSC Buzzer Does Not Sound 10 - 14
D (A40 - 22) - GND (A38-6 31, A39 - 8, 17) G-R <-> W-B IG Switch ON, Shift Lever Is In D Position 8 - 14
IG Switch ON, Shift Lever Is In Other Than D Position Below 1.5
P (A40 - 24) - GND (A38 - 6, 31, A39 - 8, 17) G-W <->W-B IG Switch ON, Shift Lever Is In P Position 8 - 14
IG Switch ON, Shift Lever Is In Other Than P Position Below 1.5
D/G (A40 - 25) - GND (A38 - 6, 31, A39 - 8, 17) W <-> W-B IG Switch ON 10 - 14
CSW (A40 - 26) (1) - GND (A38 - 6, 31, A39-8, 17) B-W <-> W-B IG Switch ON, TRAC Cut Switch Pushed In Below 1.5
IG Switch ON, TRAC Cut Switch Released 10 - 14
GYAW (A40 - 27) - GND (A38 - 6, 31, A39 - 8, 17) R-W <-> W-B IG Switch OFF Continuity
YAW (A40 - 28) - GYAW (A40 - 27) B <-> R-W IG Switch ON, Vehicle Is In Stationary Condition 2 - 3
(1) Only for 2WD