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Terminals Of Ecu

Fig 1: Identifying Terminals Of ECU
G03469787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
ECU TERMINALS REFERENCE

Symbols (Terminals No.) Wiring Color Condition Specified Condition
SLRL (S18-1) - GND (S20-1) V-W - W-B IG switch ON Below 1.0 V
Engine idling, height control switch is pushed from "N" to "UP" or "DOWN" 8 V or more
SLRR (S18-2) - GND (S20-1) V-W-B IG switch ON Below 1.0 V
Engine idling, height control switch is pushed from "N" to "UP" or "DOWN" 8 V or more
RAL+(S18-3)-RAL-(S18-12) B-Y - G-W IG switch ON Continuity (Ω)
RBL+ (S18-4) - RBL-(S18-14) GR-L IG switch ON Continuity (Ω)
RAR+(S18-5)-RAR-(S18-16) GR-B-R-Y IG switch ON Continuity (Ω)
RBR+(S18-6)-RBR-(S18-17) L-W - L-B IG switch ON Continuity (Ω)
SLLO (S18-7) - GND (S20-1) P-G - W-B IG switch ON Below 1.0 V
Engine idling, height control switch from "UP" to "DOWN" 8 V or more
SLEX (S18-8) - GND (S20-1) LG - W-B IG switch ON Below 1.0 V
Engine idling, height control switch from "UP" to "DOWN" 8 V more
RC(S18-18)-GND(S20-1) BR-Y - W-B IG switch ON Below 1.0 V
Engine idling, button of height control switch is pushed from "N" to "UP" or "DOWN" 8 V or more
SGR2(S18-19)-GND (S20-1) R-B - W-B Always Continuity (Ω)
SBR2 (S18-20) - GND (S20-1) BR-W - W-B IG switch ON 4.5 to 5.5 V
SGL2 (S18-21)-GND (S20-1) R-W - W-B Always Continuity (Ω)
SBL2 (S18-22) - GND (S20-1) BR-W - W-B IG switch ON 4.5 to 5.5 V
SHRL(S18-23)-GND (S20-1) GR-G - W-B IG switch ON 0.5 to 4.5 V
Engine idling, vehicle height is changed from "HIGH" to "NORMAL" by pressing the height control switch Approx. 2.5 V
SHRR(S18-24)-GND (S20-1) W-W-B IG switch ON 0.5 to 4.5 V
Engine idling, vehicle height is changed from "HIGH" to "NORMAL" by pressing the height control switch Approx. 2.5 V
RM+(S18-25)-GND (S20-1) L-Y - W-B Engine idling, vehicle height is changed from "NORMAL" to "HIGH" by pressing the height control switch (While height control compressor assy is working). Below 1.0 V
RM-(S18-26)- GND (S20-1) P-W-B Always Continuity (Ω)
FBR+ (S19-3) - FBR- (S19-4) Y-R - V-R IG switch ON Continuity (Ω)
GND2 (S19-5) - Body ground W-B-Body ground Always Continuity (Ω)
B(S19-6)-GND(S20-1) B-R - W-B IG switch ON 10 to 14 V
FBL+ (S19-8) - FBL- (S19-1) P-G - R-B IG switch ON Continuity (Ω)
FAR+ (S19-9) - FAR- (S19-2) LG-B - P-L IG switch ON Continuity (Ω)
FAL+ (S19-17) - FAL- (S19-7) V-G - B-0 IG switch ON Continuity (Ω)
STP (S19-12) - GND (S20-1) G-Y-W-B Brake pedal depressed 10 to 14 V
Brake pedal released Below 1.5 V
TACH (S19-13)-GND (S20-1) B-W - W-B Engine idling Pulse generation
DNSW (S19-15)-GND (S20-1) L-W - W-B IG switch ON, "DOWN" button of height control switch pushed in Below 1.5 V
IG switch ON, "DOWN" button of height control switch free 10 to 14 V
UPSW (S19-16)-GND (S20-1) L-W-B IG switch ON, "UP" button of height control switch pushed in Below 1.5 V
IG switch ON, "DOWN" button of height control switch free 10 to 14 V
SBR (S19-18)-GND (S20-1) G-B - W-B IG switch ON 4.5 to 5.5 V
SBR3 (S19-21)-GND (S20-1) G-R - W-B IG switch ON 4.5 to 5.5 V
SGR (S19-22)-GND (S20-1) L-Y-W-B Always Continuity (Ω)
TD (S19-24) - GND (S20-1) G-W-B IG switch ON, height control OFF switch pushed in Below 1.5 V
IG switch ON, height control OFF switch released 10 to 14 V
GND (S20-1) - Body ground W-B-Body ground Always Continuity (Ω)
TSW2 (S20-2) - GND (S20-1) L-Y - W-B IG switch ON and absorber control switch "SPORT2 (S2)" or "COMFORT (C)" 0 to 1.5 V
IG switch ON and absorber control switch "SPORT1 (S1)" or "NORM (M)" 10 to 14 V
TSW1 (S20-3)-GND (S20-1) L-B - W-B IG switch ON and absorber control switch "SPORT1 (S1)" or "SPORT1 (S1)" 0 to 1.5 V
IG switch ON and absorber control switch "NORM (M)" or "COMFORT (C)" 10 to 14 V
DOOR (S20-4)-GND (S20-1) R-G - W-B IG switch ON, each door opened Below 1.5 V
IG switch ON, all door closed 10 to 14 V
TS (S20-5)-GND (S20-1) R-B - W-B IG switch ON and terminals TS - CG connected Below 1.0 V
IG switch ON and terminals TS - CG not connected 10 to 14 V
TC (S20-6)-GND (S20-1) P-L - W-B IG switch ON and terminals TC - CG connected Below 1.0 V
IG switch ON and terminals TC - CG not connected 10 to 14 V
FLO (S20-8) - GND (S20-1) L-O - W-B Vehicle speed 12 mph (20 km/h) or higher Pulse generation
FRO (S20-9)-GND (S20-1) L-R - W-B Vehicle speed 12 mph (20 km/h) or higher Pulse generation
IG (S20-10)-GND (S20-1) B-R - W-B IG switch ON 10 to 14 V
VN (S20-15)-GND (S20-1) Y-G - W-B IG switch ON, height control OFF indicator lamp ON 8 V or more
IG switch ON, height control OFF indicator lamp OFF Below 1.5 V
HI (S20-16)-GND (S20-1) Y-W-B IG switch ON, height control "HI" indicator lamp ON 8 V or more
IG switch ON, height control "N" or "LO" indicator lamp ON Below 1.5 V
NR (S20-17)-GND (S20-1) Y-B - W-B IG switch ON, height control "N" indicator lamp ON 8 V or more
IG switch ON, height control "LO" or "HI" indicator lamp ON Below 1.5 V
LO (S20-18)-GND (S20-1) BR-B - W-B IG switch ON, height control "LO" indicator lamp ON 8 V or more
IG switch ON, height control "HI" or "N" indicator lamp ON Below 1.5 V
SIL (S20-20)-GND (S20-1) R-Y - W-B IG switch ON 8 V or more
HARD (S20-7) - GND (S20-1) B-L - W-B Vehicle stop Pulse generation
SGR3 (S20-25)-GND (S20-1) Y-B - W-B Always Continuity (Ω)
SGFR (S20-27)-GND (S20-1) R-L - W-B Observe data list on hand-held tester G (UP & DOWN) R -
SGRR (S20-28)-GND (S20-1) W-L - W-B Observe data list on hand-held tester G (UP & DOWN) R -
SS2- (S20-29)-GND (S20-1) W-W-B IG switch ON and steering wheel is being turned slowly Repeat 1.5 to 3.5 V
SS2+ (S20-30) - GND (S20-1) R-W-B IG switch ON and steering wheel is being turned slowly Repeat 1.5 to 3.5 V
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