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Home >> Lexus >> 2004 >> GX 470 >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Abs With EBD & BA & TRAC & VSC System - Diagnosis >> Terminals Of Ecu

Terminals Of Ecu

Fig 1: Identifying Terminals Of ECU
G04354768Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TERMINALS OF ECU REFERENCE

Symbols (Terminals No.) Wiring Color Condition STD Voltage (V)
SA1 (S8 - 2) - GND (S8 - 6, 31, S9 - 8, 17) L-W <--> W-B IG switch ON, ABS warning light OFF 10 - 14
SA2 (S8 - 3) - GND (S8 - 6, 31, S9 - 8, 17) L-W <--> W-B IG switch ON, ABS warning light OFF 10 - 14
SA3 (S8 - 4) - GND (S8 - 6, 31, S9 - 8, 17) L <--> W-B IG switch ON, ABS warning light OFF 10 - 14
STR (S8 - 5) - GND (S8 - 6, 31, S9 - 8, 17) L-R <--> W-B IG switch ON, ABS warning light OFF 10 - 14
SFLR (S8 - 7) - GND (S8 - 6, 31, S9 - 8, 17) L-B <--> W-B IG switch ON, ABS warning light OFF 10 - 14
SRRH (S8 - 8) - GND (S8 - 6, 31, S9 - 8, 17) L-Y <--> W-B IG switch ON, ABS warning light OFF 10 - 14
SRRR (S8 - 9) - GND (S8 - 6, 31, S9 - 8, 17) Y <--> W-B IG switch ON, ABS warning light OFF 10 - 14
VCM (S8 - 10) - GND (S8 - 6, 31, S9 - 8, 17) B <--> W-B IG switch ON 4.5 - 5.5
PH (S8 - 11) - GND (S8 - 6, 31, S9 - 8, 17) R-W <--> W-B IG switch ON, pressure switch (PH) ON Below 0.9
IG switch ON, pressure switch (PH) OFF 5 - 8
FR- (S8 - 13) - GND (S8 - 6, 31, S9 - 8, 17) P <--> W-B IG switch ON, right front wheel is turned slowly Pulse generation
FR+ (S8 - 14) - GND (S8 - 6, 31, S9 - 8, 17) L <--> W-B IG switch ON 9 - 14
FL- (S8 - 15) - GND (S8 - 6, 31, S9 - 8, 17) R <--> W-B IG switch ON, left front wheel is turned slowly Pulse generation
FL+ (S8 - 16) - GND (S8 - 6, 31, S9 - 8, 17) G <--> W-B IG switch ON 9 - 14
SR (S8 - 19) - R1+ (S8 - 1) BR-Y <--> B-Y IG switch ON, ABS warning light OFF 10 - 14
STPO (S8 - 20) - GND (S8 - 6, 31, S9 - 8, 17) LG <--> W-B IG switch ON 10 - 14
SFLH (S8 - 21) - GND (S8 - 6, 31, S9 - 8, 17) V <--> W-B IG switch ON, ABS warning light OFF 10 - 14
PMC (S8 - 22) - E2 (S8 - 12) W <--> R IG switch ON, stop light switch released 0.3 - 0.7
VSS (S8 - 23) - GND (S8 - 6, 31, S9 - 8, 17) (Shielded) <--> W-B IG switch OFF Continuity
FSS (S8 - 25) - GND (S8 - 6, 31, S9 - 8, 17) BR <--> W-B IG switch OFF Continuity
MTT (S8 - 27) - GND (S8 - 6, 31, S9 - 8, 17) BR-B <--> W-B IG switch ON, (Motor relay is OFF) Below 1.5
MT+ (S8 - 28) - MT - (S8 - 18) BR-W <--> BR-R IG switch ON, (Motor relay is OFF) Below 1.5
MR1 (S8 - 29) - R1 + (S8 - 1) V-Y <--> B-Y IG switch ON, hydraulic brake booster pump motor running 10 - 14
WA (S9 - 1) - GND (S8 - 6, 31, S9 - 8, 17) LG-R <--> W-B IG switch ON, ABS warning light ON 10 - 14
IG switch ON, ABS warning light OFF Below 2.0
BZ (S9 - 2) - GND (S8 - 6, 31, S9 - 8, 17) GR-G <--> W-B IG switch ON, VSC buzzer is sounded Below 1.0 <--> 10 - 14
IG switch ON, VSC buzzer is not sounded 10 - 14
D/G (S9 - 3) - GND (S8 - 6, 31, S9 - 8, 17) R-Y <--> W-B IG switch ON 10 - 14
P (S9 - 5) - GND (S8 - 6, 31, S9 - 8, 17) G-B <--> W-B IG switch ON, PNP switch in P position 10 - 14
IG switch ON, PNP switch in except P position Below 1.5
IG1 (S9 - 6) - GND (S8 - 6, 31, S9 - 8, 17) B-R <--> W-B IG switch ON 10 - 14
NEO (S9 - 7) - GND (S8 - 6, 31, S9 - 8, 17) P <--> W-B Engine idling Pulse generation
RSS (S9 - 9) - GND (S8 - 6, 31, S9 - 8, 17) BR-B <--> W-B IG switch OFF Continuity
STP (S9 - 10) - GND (S8 - 6, 31, S9 - 8, 17) G-Y <--> W-B IG switch ON 10 - 14
TC (S9 - 11) - GND (S8 - 6, 31, S9 - 8, 17) P-L <--> W-B IG switch ON and terminals Tc-E1 of DLC1 connected Below 1.5
IG switch ON and terminals Tc-E1 of DLC1 not connected 10 - 14
TS (S9 - 12) - GND (S8 - 6, 31, S9 - 8, 17) R-B <--> W-B IG switch ON and terminals Ts-E1 of DLC1 connected Below 1.5
IG switch ON and terminals Ts-E1 of DLC1 not connected 10 - 14
PKB (S9 - 13) - GND (S8 - 6, 31, S9 - 8, 17) LG <--> W-B IG switch ON, parking brake switch ON Below 1.5
IG switch OFF, parking brake switch OFF 10 - 14
ENG+ (S9 - 14) - ENG - (S9 - 22) R <--> W Engine idling Pulse generation
HDCS (S9 - 15) - GND (S8 - 6, 31, S9 - 8, 17) R-G <--> W-B IG switch ON, DAC switch OFF 10 - 14
IG switch ON, DAC switch ON Below 1.5
RL+ (S9 - 18) - GND (S8 - 6, 31, S9 - 8, 17) R <--> W-B IG switch ON 9 - 14
RL- (S9 - 19) - GND (S8 - 6, 31, S9 - 8, 17) G <--> W-B IG switch ON, left rear wheel is turned slowly Pulse generation
RR+ (S9 - 20) - GND (S8 - 6, 31, S9 - 8, 17) B <--> W-B IG switch ON 9 - 14
RR- (S9 - 21) - GND (S8 - 6, 31, S9 - 8, 17) W <--> W-B IG switch ON, right rear wheel is turned slowly Pulse generation
CD (S9 - 23) - GND (S8 - 6, 31, S9 - 8, 17) G-W <--> W-B IG switch ON, center diff. lock indicator ON Below 2.0
IG switch ON, center diff. lock indicator OFF 10 - 14
TRC+ (S9 - 24) - TRC- (S9 - 16) B <--> Y Engine idling Pulse generation
EXI (S10 - 3) - GND (S8 - 6, 31, S9 - 8, 17) G-W <--> W-B IG switch ON, center diff. lock switch ON Below 2.0
IG switch ON, center diff. lock switch OFF 10 - 14
VSCW (S10 - 4) - GND (S8 - 6, 31, S9 - 8, 17) Y-R <--> W-B IG switch ON, VSC TRAC warning light ON Below 2.0
IG switch ON, VSC TRAC warning light OFF 10 - 14
BRL (S10 - 5) - GND (S8 - 6, 31, S9 - 8, 17) B-L <--> W-B IG switch ON, brake warning light ON 10 - 14
IG switch ON, brake warning light OFF Below 2.0
IND (S10 - 6) - GND (S8 - 6, 31, S9 - 8, 17) R <--> W-B IG switch ON, SLIP indicator light ON Below 2.0
IG switch ON, SLIP indicator light OFF 10 - 14
**** (S10 - 7) - GND (S8 - 6, 31, S9 - 8, 17) L-O <--> W-B IG switch ON, VSC OFF indicator light ON Below 2.0
IG switch ON, VSC OFF indicator light OFF 10 - 14
AHCO (S10 - 8) - GND (S8 - 6, 31, S9 - 8, 17) B-L <--> W-B Vehicle drive at about 20 km/h (12mph) Pulse generation
VYS (S10 - 9) - GND (S8 - 6, 31, S9 - 8, 17) L <--> W-B IG switch ON 4.5 - 5.5
GL2 (S10 - 10) - GYAW (S10 - 27) W <--> B IG switch ON, vehicle is placed on the horizontal surface 2.0 - 3.0
SS1+ (S10 - 14) - SS1- (S10 - 23) L <--> P Engine idling, steering wheel is turned slowly. Pulse generation
EXI4 (S10 - 17) - GND (S8 - 6, 31, S9 - 8, 17) G-W <--> W-B IG switch ON, transfer in L4 position Below 2.0
IG switch ON, transfer in except L4 position 10 - 14
YSS (S10 - 18) - GND (S8 - 6, 31, S9 - 8, 17) (Shielded) <--> W-B IG switch OFF Continuity
YD (S10 - 19) - GYAW (S10 - 27) G <--> B IG switch ON, vehicle is placed on the horizontal surface 4.5 - 5.3
GL1 (S10 - 22) - GYAW (S10 - 27) R <--> B IG switch ON, ABS warning light OFF 2.0 - 3.0
FRO (S10 - 24) - GND (S8 - 6, 31, S9 - 8, 17) L-R <--> W-B Vehicle driving at about 20 km/h (12mph) Pulse generation
FLO (S10 - 25) - GND (S8 - 6, 31, S9 - 8, 17) L-O <--> W-B Vehicle driving at about 20 km/h (12mph) Pulse generation
GYAW (S10 - 27) - GND (S8 - 6, 31, S9 - 8, 17) B <--> W-B IG switch OFF Continuity
YAW (S10 - 28) - GYAW (S10 - 27) Y <--> B IG switch ON, ABS warning light OFF 2.42 - 2.58
SRLR (S11 - 1) - GND (S8 - 6, 31, S9 - 8, 17) Y-B <--> W-B IG switch ON, ABS warning light OFF 10 - 14
MR2 (S11 - 2) - R2+ (S11 - 3) LG-B <--> GR-B IG switch ON, hydraulic brake booster pump motor running 10 - 14
HDCW (S11 - 4) - GND (S8 - 6, 31, S9 - 8, 17) BR-Y <--> W-B IG switch ON, DAC indicator light ON Below 2.0
IG switch ON, DAC indicator light OFF 10 - 14
AST (S11 - 6) - GND (S8 - 6, 31, S9 - 8, 17) Y-R <--> W-B IG switch ON, ABS warning light OFF 10 - 14
SRLH (S11 - 7) - GND (S8 - 6, 31, S9 - 8, 17) Y-G <--> W-B IG switch ON, ABC warning light OFF 10 - 14
SFRR (S11 - 8) - GND (S8 - 6, 31, S9 - 8, 17) V-G <--> W-B IG switch ON, ABS warning light OFF 10 - 14
PL (S11 - 9) - GND (S8 - 6, 31, S9 - 8, 17) G-Y <--> W-B IG switch ON, pressure switch ON 3 - 5
IG switch ON, pressure switch OFF 7 - 11
STP2 (S11 - 14) - GND (S8 - 6, 31, S9 - 8, 17) G-Y <--> W-B Stop light switch OFF Below 1.5
Stop light switch ON 8 - 14
+BI (S11 - 15) - GND (S8 - 6, <--> S9 - 8, 17) W-R <--> W-B IG switch ON, ABS warning light OFF 10 - 14
SFRH (S11 - 16) - GND (S8 - 6, 31, S9 - 8, 17) V-R <--> W-B IG switch ON, ABS warning light OFF 10 - 14
TRIG (S11 - 20) - GND (S8 - 6, 31, S9 - 8, 17) GR-R <--> W-B IG switch ON, ABS warning light OFF 10 - 14
+BO (S11 - 21) - GND (S8 - 6, 31, S9 - 8, 17) W-R <--> W-B IG switch ON, ABS warning light OFF 10 - 14
IG2 (S11 - 22) - GND (S8 - 6, 31, S9 - 8, 17) B-O <--> W-B IG switch ON 10 - 14