Sfi System Terminals Of Ecm

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Gr-Fe Engine Control System. Lexus Gs430, Gs300. Uzs190 Grs190

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Sfi System -- Terminals Of Ecm



Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm

HINT:
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
BATT (A6-4) - E1 (E7-7)
L - BR
Battery (for measuring battery voltage and for ECM memory)
Always
9 to 14 V
+BM (E8-5) - E1 (E7-7)
P - BR
Power source of throttle motor
Always
9 to 14 V
IGSW (A6-17) - E1 (E7-7)
B-W - BR
Engine switch
Engine switch on (IG)
9 to 14 V
+B (A6-6) - E1 (E7-7)
B-R - BR
Power source of ECM
Engine switch on (IG)
9 to 14 V
+B1 (A6-5) - E1 (E7-7)
B-R - BR
Power source of ECM
Engine switch on (IG)
9 to 14 V
OC1+ (E8-34) - OC1- (E8-33)
W - Y-B
Camshaft timing oil control valve (OCV) (Intake side (bank 1))
Engine switch on (IG)
Pulse generation (see waveform 1)
OC2+ (E6-9) - OC2- (E6-8)
LG - L-B
Camshaft timing oil control valve (OCV) (Intake side (bank 2))
Engine switch on (IG)
Pulse generation (see waveform 1)
OE1+ (E8-9) - OE1- (E8-8)
LG - L-W
Camshaft timing oil control valve (OCV) (Exhaust side (bank 1))
Engine switch on (IG)
Pulse generation (see waveform 2)
OE2+ (E6-24) - OE2- (E6-23)
R-R - G-B
Camshaft timing oil control valve (OCV) (Exhaust side (bank 2))
Engine switch on (IG)
Pulse generation (see waveform 2)
MREL (A6-13) - E1 (E7-7)
Y - BR
EFI MAIN relay
Engine switch on (IG)
9 to 14 V
VC (E8-29) - E2 (E8-28)
L - BR
Power source for sensors (specific voltage)
Engine switch on (IG)
4.5 to 5.0 V
VC2 (E6-29) - E3 (E6-30)
L-Y - BR
Power source for sensors (specific voltage)
Engine switch on (IG)
4.5 to 5.0 V
VG (E6-27) - E2G (E6-26)
G-B - B-W
Mass air flow meter
Idling, Shift lever position P or N, A/C switch OFF
0.5 to 3.0 V
THA (E6-25) - E3 (E6-30)
G - BR
Intake air temperature sensor
Idling, Intake air temperature 20°C (68°F)
0.5 to 3.4 V
THW (E6-20) - E2 (E8-28)
R - BR
Engine coolant temperature sensor
Idling, Engine coolant temperature 80°C (176°F)
0.2 to 1.0 V
VTA1 (E8-23) - E3 (E6-30)
R-B - BR
Throttle position sensor (for engine control)
Engine switch on (IG), Throttle valve fully closed
0.5 to 1.2 V
VTA1 (E8-23) - E3 (E6-30)
R-B - BR
Throttle position sensor (for engine control)
Engine switch on (IG), Throttle valve fully open
3.2 to 4.8 V
VTA2 (E8-22) - E3 (E6-30)
L-B - BR
Throttle position sensor (for sensor malfunction detection)
Engine switch on (IG), Accelerator pedal released
2.1 to 3.1 V
VTA2 (E8-22) - E3 (E6-30)
L-B - BR
Throttle position sensor (for sensor malfunction detection)
Engine switch on (IG), Accelerator pedal depressed
4.5 to 5.0 V
VPA (A7-33) - EPA (A7-34)
G-W - L-Y
Accelerator pedal position sensor (for engine control)
Engine switch on (IG), Accelerator pedal released
0.5 to 1.1 V
VPA (A7-33) - EPA (A7-34)
G-W - L-Y
Accelerator pedal position sensor (for engine control)
Engine switch on (IG), Accelerator pedal depressed
2.6 to 4.5 V
VPA2 (A7-32) - EPA2 (A7-26)
P-L - BR
Accelerator pedal position sensor (for sensor malfunctioning detection)
Engine switch on (IG), Accelerator pedal released
1.2 to 2.0 V
VPA2 (A7-32) - EPA2 (A7-26)
P-L - BR
Accelerator pedal position sensor (for sensor malfunctioning detection)
Engine switch on (IG), Accelerator pedal depressed
3.4 to 5.0 V
VCPA (A7-35) - EPA2 (A7-26)
P - BR
Power source of accelerator pedal position sensor (for VPA)
Engine switch on (IG)
4.5 to 5.0 V
VCP2 (A7-27) - EPA2 (A7-26)
LG - BR
Power source of accelerator pedal position sensor (for VPA2)
Engine switch on (IG)
4.5 to 5.0 V
HA1A (E45-6) - E04 (E45-5)
V - W-B
A/F sensor heater
Idling
Below 3.0 V
HA2A (E45-4) - E05 (E45-3)
B-L - W-B
A/F sensor heater
Idling
Below 3.0 V
HA1A (E45-6) - E04 (E45-5)
V - W-B
A/F sensor heater
Engine switch on (IG)
9 to 14 V
HA2A (E45-4) - E05 (E45-3)
B-L - W-B
A/F sensor heater
Engine switch on (IG)
9 to 14 V
A1A+ (E45-18) - E1 (E7-7)
R - BR
A/F sensor
Engine switch on (IG)
3.3 V*
A2A+ (E45-28) - E1 (E7-7)
B - BR
A/F sensor
Engine switch on (IG)
3.3 V*
A1A- (E45-17) - E1 (E7-7)
G - BR
A/F sensor
Engine switch on (IG)
3.0 V*
A2A- (E45-27) - E1 (E7-7)
W - BR
A/F sensor
Engine switch on (IG)
3.0 V*
HT1B (A7-2) - E1 (E7-7)
Y-B - BR
Heated oxygen sensor heater
Idling
Below 3.0 V
HT2B (A7-1) - E1 (E7-7)
L-W - BR
Heated oxygen sensor heater
Idling
Below 3.0 V
HT1B (A7-2) - E1 (E7-7)
Y-B - BR
Heated oxygen sensor heater
Engine switch on (IG)
9 to 14 V
HT2B (A7-1) - E1 (E7-7)
L-W - BR
Heated oxygen sensor heater
Engine switch on (IG)
9 to 14 V
OX1B (A7-28) - O1B- (A7-29)
R - G
Heated oxygen sensor
Maintain engine speed at 2,500 rpm for 2 minutes after warming up sensor
Pulse generation (see waveform 2)
OX2B (A7-17) - O2B- (A7-18)
B - W
Heated oxygen sensor
Maintain engine speed at 2,500 rpm for 2 minutes after warming up sensor
Pulse generation (see waveform 2)
#10 (E8-15) - E1 (E7-7)
G-W - BR
Injector
Engine switch on (IG)
9 to 14 V
#20 (E6-17) - E1 (E7-7)
B-Y - BR
Injector
Engine switch on (IG)
9 to 14 V
#30 (E8-14) - E1 (E7-7)
P-L - BR
Injector
Engine switch on (IG)
9 to 14 V
#40 (E6-16) - E1 (E7-7)
LG-B - BR
Injector
Engine switch on (IG)
9 to 14 V
#50 (E8-13) - E1 (E7-7)
V - BR
Injector
Engine switch on (IG)
9 to 14 V
#60 (E6-15) - E1 (E7-7)
R-B - BR
Injector
Engine switch on (IG)
9 to 14 V
#10 (E8-15) - E1 (E7-7)
G-W - BR
Injector
Idling
Pulse generation (see waveform 3)
#20 (E6-17) - E1 (E7-7)
B-Y - BR
Injector
Idling
Pulse generation (see waveform 3)
#30 (E6-14) - E1 (E7-7)
P-L - BR
Injector
Idling
Pulse generation (see waveform 3)
#40 (E6-16) - E1 (E7-7)
LG-B - BR
Injector
Idling
Pulse generation (see waveform 3)
#50 (E8-13) - E1 (E7-7)
V - BR
Injector
Idling
Pulse generation (see waveform 3)
#60 (E6-15) - E1 (E7-7)
R-B - BR
Injector
Idling
Pulse generation (see waveform 3)
KNK1 (E7-28) - EKNK (E7-30)
B - W
Knock sensor
Maintain engine speed at 4,000 after warming up
Pulse generation (see waveform 4)
KNK2 (E7-29) - EKN2 (E7-31)
R - G
Knock sensor
Maintain engine speed at 4,000 after warming up
Pulse generation (see waveform 4)
VV1+ (E8-21) - VV1- (E8-20)
Y - L-Y
Variable valve timing (VVT) sensor (Intake side (bank 1))
Idling
Pulse generation (see waveform 5)
VV2+ (E8-19) - VV2- (E8-18)
R-L - W
Variable valve timing (VVT) sensor (Intake side (bank 2))
Idling
Pulse generation (see waveform 5)
NE+ (E8-32) - NE- (E8-31)
R - G
Crankshaft position sensor
Idling
Pulse generation (see waveform 5, 6)
EV1+ (E6-19) - EV1- (E6-18)
B - W
Variable valve timing (VVT) sensor (Exhaust side (bank 1))
Idling
Pulse generation (see waveform 6)
EV2+ (E45-13) - EV2- (E45-12)
G - R
Variable valve timing (VVT) sensor (Exhaust side (bank 2))
Idling
Pulse generation (see waveform 6)
IGT1 (E6-13) - E1 (E7-7)
L-R - BR
Ignition coil (ignition signal)
Idling
Pulse generation (see waveform 7)
IGT2 (E8-17) - E1 (E7-7)
L-B - BR
Ignition coil (ignition signal)
Idling
Pulse generation (see waveform 7)
IGT3 (E6-10) - E1 (E7-7)
V - BR
Ignition coil (ignition signal)
Idling
Pulse generation (see waveform 7)
IGT4 (E6-12) - E1 (E7-7)
P-L - BR
Ignition coil (ignition signal)
Idling
Pulse generation (see waveform 7)
IGT5 (E8-27) - E1 (E7-7)
W-L - BR
Ignition coil (ignition signal)
Idling
Pulse generation (see waveform 7)
IGT6 (E8-26) - E1 (E7-7)
W-L - BR
Ignition coil (ignition signal)
Idling
Pulse generation (see waveform 7)
IGF1 (E6-7) - E1 (E7-7)
G - BR
Ignition coil (ignition confirmation signal)
Engine switch on (IG)
4.5 to 5.0 V
IGF2 (E6-6) - E1 (E7-7)
G-B - BR
Ignition coil (ignition confirmation signal)
Engine switch on (IG)
4.5 to 5.0 V
IGF1 (E6-7) - E1 (E7-7)
G - BR
Ignition coil (ignition confirmation signal)
Idling
Pulse generation (see waveform 7)
IGF2 (E6-6) - E1 (E7-7)
G-B - BR
Ignition coil (ignition confirmation signal)
Idling
Pulse generation (see waveform 7)
PRG (E8-11) - E1 (E7-7)
W - BR
VSV for EVAP
Engine switch on (IG)
9 to 14 V
PRG (E8-11) - E1 (E7-7)
W - BR
VSV for EVAP
Idling
Pulse generation (see waveform 8)
SPD (A6-22) - E1 (E7-7)
V-W - BR
Speed signal from combination meter
Engine switch on (IG), Rotate driving wheel slowly
Pulse generation (see waveform 9)
STA (A6-12) - E1 (E7-7)
R - BR
Starter signal
Cranking
9 to 14 V
STAR (E7-4) - E1 (E7-7)
L-Y - BR
Park/neutral position switch signal
Engine switch on (IG), Other shift position in P or N
9 to 14 V
STAR (E7-4) - E1 (E7-7)
L-Y - BR
Park/neutral position switch signal
Cranking, Shift position in P or N
0 to 3.0 V
STSW (A6-19) - E1 (E7-7)
Y-B - BR
Engine switch signal
Shift lever position P or N, engine switch START
6.0 V or more
STP (A7-4) - E1 (E7-7)
R-B - BR
Stop light switch
Brake pedal depressed
7.5 to 14 V
STP (A7-4) - E1 (E7-7)
R-B - BR
Stop light switch
Brake pedal released
Below 1.5 V
ST1- (A6-8) - E1 (E7-7)
G-W - BR
Stop light switch
(opposite to STP terminal)
Engine switch on (IG), Brake pedal depressed
Below 1.5 V
ST1- (A6-8) - E1 (E7-7)
G-W - BR
Stop light switch
(opposite and STP terminal)
Engine switch on (IG), Brake pedal released
7.5 to 14 V
M+ (E8-2) - ME01 (E8-4)
B - W-B
Throttle actuator
Idling with warm engine
Pulse generation (see waveform 10)
M- (E8-1) - ME01 (E8-4)
W - W-B
Throttle actuator
Idling with warm engine
Pulse generation (see waveform 11)
FC (A6-14) - E1 (E7-7)
R-G - BR
Fuel pump control
Engine switch on (IG)
9 to 14 V
FC (A6-14) - E1 (E7-7)
R-G - BR
Fuel pump control
Idling
0 to 3 V
FPR (A6-15) - E1 (E7-7)
R-W - BR
Fuel pump control
Cranking
9 to 14 V
FPR (A6-15) - E1 (E7-7)
R-W - BR
Fuel pump control
Idling
9 to 14 V
W (A7-8) - E1 (E7-7)
R-L - BR
MIL
Engine switch on (IG)
Below 3.0 V
W (A7-8) - E1 (E7-7)
R-L - BR
MIL
Idling
0 to 3 V
TC (A7-3) - E1 (E7-7)
V - BR
Terminal TC of DLC 3
Engine switch on (IG)
9 to 14 V
TACH (A7-16) - E1 (E7-7)
W-L - BR
Engine speed
Idling
Pulse generation (see waveform 12)
ACIS (E6-3) - E1 (E7-7)
Y - BR
Intake air control valve actuator
Engine switch on (IG)
9 to 14 V
ACIS (E6-3) - E1 (E7-7)
Y - BR
Intake air control valve actuator
Engine RPM is 2,400 to 4,000 rpm and throttle opening percentage is 40 % or more
0 to 3 V
CANH (A6-25) - E1 (E7-7)
B - BR
CAN communication line
Engine switch on (IG)
Pulse generation (see waveform 13)
CANL (A6-24) - E1 (E7-7)
W - BR
CAN communication line
Engine switch on (IG)
Pulse generation (see waveform 14)
HINT:
*: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

WAVEFORM 1
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Camshaft timing oil control valve (OCV):
Item
Content
Symbols (Terminal No.)
OC1+ (E8-34) - OC1- (E8-33)
OC2+ (E6-9) - OC2- (E6-8)
OE1+ (E8-9) - OE1- (E8-8)
OE2+ (E6-24) - OE2- (E6-23)
Tool setting
5 V/DIV., 1 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 2
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Heated oxygen sensor:
Item
Content
Symbols (Terminal No.)
OX1B (A7-28) - O1B- (A7-29)
OX2B (A7-17) - O2B- (A7-18)
Tool setting
0.2 V/DIV., 200 msec./DIV.
Condition
Engine speed maintained at 2,500 rpm for 2 minutes after warming up engine
HINT:
In the Data List, item O2S B1 S2 shows the ECM input values from the heated oxygen sensor.

WAVEFORM 3
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Injector No. 1 (to No. 6) injection signal:
Item
Content
Symbols (Terminal No.)
#10 (E8-15) - E1 (E7-7)
#20 (E6-17) - E1 (E7-7)
#30 (E8-14) - E1 (E7-7)
#40 (E6-16) - E1 (E7-7)
#50 (E8-13) - E1 (E7-7)
#60 (E6-15) - E1 (E7-7)
Tool setting
20 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 4
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Knock sensor:
Item
Content
Symbols (Terminal No.)
KNK1 (E7-28) - EKNK (E7-30)
KNK2 (E7-29) - EKN2 (E7-31)
Tool setting
0.01 to 10 V/DIV., 0.01 to 10 msec./DIV.
Condition
Engine speed maintained at 4,000 rpm after warming up engine
HINT:
  1. The wavelength becomes shorter as the engine rpm increases.
  2. The waveforms and amplitudes displayed differ slightly depending on the vehicle.

WAVEFORM 5
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Crankshaft position sensor and VVT sensor for intake camshaft:
Item
Content
Symbols (Terminal No.)
NE+ (E8-32) - NE- (E8-31)
VV1+ (E8-21) - VV1- (E8-20)
VV2+ (E8-19) - VV2- (E8-18)
Tool setting
5 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 6
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Crankshaft position sensor and VVT sensor for exhaust camshaft:
Item
Content
Symbols (Terminal No.)
NE+ (E8-32) - NE- (E8-31)
EV1+ (E6-19) - EV1- (E6-18)
EV2+ (E45-13) - EV2- (E45-12)
Tool setting
5 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 7
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Igniter IGT signal (from ECM to igniter) and Igniter IGF signal (from igniter to ECM):
Item
Content
Symbols (Terminal No.)
IGT1 (E6-13) - E1 (E7-7)
IGT2 (E8-17) - E1 (E7-7)
IGT3 (E6-10) - E1 (E7-7)
IGT4 (E6-12) - E1 (E7-7)
IGT5 (E8-27) - E1 (E7-7)
IGT6 (E8-26) - E1 (E7-7)
IGF2 (E6-6) - E1 (E7-7)
Tool setting
2 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 8
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
VSV for EVAP:
Item
Content
Symbols (Terminal No.)
PRG (E8-11) - E1 (E7-7)
Tool setting
5 V/DIV., 50 msec./DIV.
Condition
Idling
HINT:
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.

WAVEFORM 9
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Vehicle speed signal:
Item
Content
Symbols (Terminal No.)
SPD (A6-22) - E1 (E7-7)
Tool setting
2 V/DIV., 20 msec./DIV.
Condition
Driving at 20 km/h (12 mph)
HINT:
The wavelength becomes shorter as the vehicle speed increases.

WAVEFORM 10
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Throttle actuator positive terminal:
Item
Content
Symbols (Terminal No.)
M+ (E8-2) - ME01 (E8-4)
Tool setting
5 V/DIV., 1 msec./DIV.
Condition
Idling with warm engine
HINT:
The duty ratio varies depending on the throttle actuator operation.

WAVEFORM 11
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Throttle actuator negative terminal:
Item
Content
Symbols (Terminal No.)
M- (E8-1) - ME01 (E8-4)
Tool setting
5 V/DIV., 1 msec./DIV.
Condition
Idling with warm engine

WAVEFORM 12
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Engine speed signal:
Item
Content
Symbols (Terminal No.)
TACH (A7-16) - E1 (E7-7)
Tool setting
5 V/DIV., 10 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 13
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
CAN communication signal:
Item
Content
Symbols (Terminal No.)
CANH (A6-25) - E1 (E7-7)
Tool setting
1 V/DIV., 10 μsec./DIV.
Condition
Stop engine and engine switch on (IG)
HINT:
The waveform varies depending on the CAN communication signal.

WAVEFORM 14
Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
CAN communication signal:
Item
Content
Symbols (Terminal No.)
CANL (A6-24) - E1 (E7-7)
Tool setting
1 V/DIV., 10 μsec./DIV.
Condition
Stop engine and engine switch on (IG)
HINT:
The waveform varies depending on the CAN communication signal.