Sfi System Terminals Of Ecm

  1. Waveform 1 (Reference)

  1. Waveform 2 (Reference)

  1. Waveform 3 (Reference)

  1. Waveform 4 (Reference)

  1. Waveform 5 (Reference)

  1. Waveform 6 (Reference)

  1. Waveform 7 (Reference)

  1. Waveform 8 (Reference)

  1. Waveform 9 (Reference)

  1. Waveform 10 (Reference)

Sfi System -- Terminals Of Ecm



Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm

HINT:
Each ECM terminal's standard normal voltage is shown in the table below.
In the table, first check the information under "Condition". Look under "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".
Use the illustration above as a reference for the ECM terminals.

Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
BATT (E8-3) - E1 (E11-3)
L - BR
Battery (for measuring battery voltage and for ECM memory)
Always
9 to 14 V
+BM (E8-7) - E1 (E11-3)
R-W - BR
Power source of throttle motor
Always
9 to 14 V
IGSW (E8-9) - E1 (E11-3)
B-O - BR
Ignition switch
Ignition switch ON
9 to 14 V
+B (E8-1) - E1 (E11-3)
B - BR
Power source of ECM
Ignition switch ON
9 to 14 V
MREL (E8-8) - E1 (E11-3)
W-G - BR
EFI relay
Ignition switch ON
9 to 14 V
VC (E11-18) - E2 (E11-28)
LG-B - BR
Power source of sensor (specific voltage)
Ignition switch ON
4.5 to 5.5 V
VTA1 (E11-20) - E2 (E11-28)
B-R - BR
Throttle position sensor (for engine control)
Ignition switch ON, accelerator pedal fully released
0.5 to 1.1 V
VTA1 (E11-20) - E2 (E11-28)
B-R - BR
Throttle position sensor (for engine control)
Ignition switch ON, accelerator pedal fully depressed
3.2 to 4.8 V
VTA2 (E11-19) - E2 (E11-28)
LG - BR
Throttle position sensor (for sensor malfunction detection)
Ignition switch ON, accelerator pedal fully released
2.1 to 3.1 V
VTA2 (E11-19) - E2 (E11-28)
LG - BR
Throttle position sensor (for sensor malfunction detection)
Ignition switch ON, accelerator pedal fully depressed
4.5 to 5.5 V
VPA (E8-18) - EPA (E8- 20)
W-L - BR-W
Accelerator pedal position sensor (for engine control)
Ignition switch ON, accelerator pedal fully released
0.5 to 1.1 V
VPA (E8-18) - EPA (E8- 20)
W-L - BR-W
Accelerator pedal position sensor (for engine control)
Ignition switch ON, accelerator pedal fully depressed
2.5 to 4.6 V
VPA2 (E8-19) - EPA2 (E8-21)
GR-G - BR-Y
Accelerator pedal position sensor (for sensor malfunction detection)
Ignition switch ON, accelerator pedal fully released
1.5 to 2.9 V
VPA2 (E8-19) - EPA2 (E8-21)
GR-G - BR-Y
Accelerator pedal position sensor (for sensor malfunction detection)
Ignition switch ON, accelerator pedal fully depressed
3.5 to 5.5 V
VCPA (E8-26) - EPA (E8-20)
LG-R - BR-W
Power source of accelerator pedal position sensor (for VPA)
Ignition switch ON
4.5 to 5.5 V
VCP2 (E8-27) - EPA2 (E8-21)
BR-R - BR-Y
Power source of accelerator pedal position sensor (for VPA2)
Ignition switch ON
4.5 to 5.5 V
VG (E10-28) - E2G (E10-30)
L-W - L-R
MAF meter
Idling, shift lever position on neutral, A/C switch off
0.5 to 3.0 V
THA (E10-29) - E2 (E11-28)
L-B - BR
IAT sensor
Idling, intake air temperature 20°C (68°F)
0.5 to 3.4 V
THW (E11-32) - E2 (E11-28)
B - BR
ECT sensor
Idling, engine coolant temperature 80°C (176°F)
0.2 to 1.0 V
#10 (E10-6) - E01 (E11-7)
#20 (E10-5) - E01 (E11-7)
#30 (E10-2) - E01 (E11-7)
#40 (E10-1) - E01 (E11-7)
L - W-B
G - W-B
R - W-B
W - W-B
Injector
Ignition switch ON
9 to 14 V
#10 (E10-6) - E01 (E11-7)
#20 (E10-5) - E01 (E11-7)
#30 (E10-2) - E01 (E11-7)
#40 (E10-1) - E01 (E11-7)
L - W-B
G - W-B
R - W-B
W - W-B
Injector
Idling
Pulse generation (see waveform 6)
IGT1 (E11-17) - E1 (E11-3)
IGT2 (E11-16) - E1 (E11-3)
IGT3 (E11-15) - E1 (E11-3)
IGT4 (E11-14) - E1 (E11-3)
R - BR
R-L - BR
G-B - BR
G - BR
Ignition coil with igniter ignition signal
Idling
Pulse generation (see waveform 5)
IGF1 (E11-23) - E1 (E11-3)
G-R - BR
Ignition coil with igniter (ignition confirmation signal)
Ignition switch ON
4.5 to 5.5 V
IGF1 (E11-23) - E1 (E11-3)
G-R - BR
Ignition coil with igniter (ignition confirmation signal)
Idling
Pulse generation (see waveform 5)
G2 (E11-26) - NE- (E11-34)
R - G
Camshaft position sensor
Idling
Pulse generation (see waveform 3)
NE+ (E11-27) - NE- (E11-34)
L - G
Crankshaft position sensor
Idling
Pulse generation (see waveform 3)
FC (E8-25) - E01 (E11-7)
LG-B - W-B
Fuel pump control
Ignition switch ON
9 to 14 V
M+ (E11-5) - ME01(E10-3)
B - W-B
Throttle actuator
Idling
Pulse generation (see waveform 1)
M- (E11-4) - ME01(E10-3)
W - W-B
Throttle actuator
Idling
Pulse generation (see waveform 2)
KNK1 (E11-29) - EKNK (E11-30)
B - W
Knock sensor
Maintain engine speed at 4,000 rpm after warming up engine
Pulse generation (see waveform 8)
OC1+ (E11-13) - OC1- (E11-12)
P-L - Y
Camshaft timing oil control valve
Ignition switch ON
Pulse generation (see waveform 7)
STA (E8-12) - E1 (E11-3)
L-Y - BR
Starter signal
Shift lever position on neutral, ignition switch START
6.0 V or more
OX1A (E11-21)*2 - E2 (E11-28)
B -BR
Heated oxygen sensor
Maintain engine speed at 2,500 rpm for 2 minutes after warming up sensor
Pulse generation (see waveform 9)
HT1A (E11-1)*2 - E1 (E11-3)
Y - BR
Heated oxygen sensor heater
Ignition switch ON
9 to 14 V
ALT (E11-10) - E1 (E11-3)
G - BR
Generator
Ignition switch ON
9 to 14 V
STP (E9-4) - E1 (E11-3)
G-W - BR
Stop light switch
Brake pedal depressed
9 to 14 V
STP (E9-4) - E1 (E11-3)
G-W - BR
Stop light switch
Brake pedal released
Below 1.5 V
ST1- (E8-16) - E1 (E11-3)
R-L - BR
Stop light switch
Ignition switch ON, brake pedal depressed
Below 1.5 V
ST1- (E8-16) - E1 (E11-3)
R-L - BR
Stop light switch
Ignition switch ON, brake pedal released
7.5 to 14 V
W (E9-30) - E1 (E11-3)
R-B - BR
MIL
Idling
9 to 14 V
W (E9-30) - E1 (E11-3)
R-B - BR
MIL
Ignition switch ON
Below 3.0 V
ELS (E8-15) - E1 (E11-3)
G - BR
Electric load
Taillight switch on
7.5 to 14 V
ELS (E8-15) - E1 (E11-3)
G - BR
Electric load
Taillight switch off
0 to 1.5 V
TACH (E9-1) - E1 (E11-3)
B-W - BR
Engine speed
Idling
Pulse generation
SPD (E9-8) - E1 (E11-3)
V-R - BR
Speed signal from combination meter
Ignition switch ON, slowly turn wheel
Pulse generation (see waveform 4)
TC (E9-17) - E1 (E11-3)
P-B - BR
Terminal TC of DLC3
Ignition switch ON
9 to 14 V
SIL (E9-13) - E1 (E11-3)
R-Y - BR
Terminal SIL of DLC3
Connect intelligent tester to DLC3
Pulse generation
PSW (E10-32) - E1 (E11-3)
G-Y - BR
Power steering oil pressure switch
While turning steering wheel
Below 1.5 V
F/PS (E9-32)*1 - E1 (E11-3)
B - BR
Center airbag sensor assembly
Ignition switch ON
Pulse generation
ELS3 (E9-3) - E1 (E11-3)
B - BR
Defogger
Defogger switch ON
7.5 to 14 V
ELS3 (E9-3) - E1 (E11-3)
B - BR
Defogger
Defogger switch OFF
0 to 1.5 V
PRG (E10-23)*2 - E01 (E11-7)
L - W-B
VSV for EVAP
Ignition switch ON
9 to 14 V
PRG (E10-23)*2 - E01 (E11-7)
L - W-B
VSV for EVAP
Idling
Pulse generation (see waveform 10)
VAF (E11-25)*3 - E1 (E11-3)
G-B - BR
Variable resistor
Ignition switch ON
0 to 5.0 V
HINT:
*1: w/ Airbag
*2: for Unleaded Gasoline Specification Vehicle
*3: for Leaded Gasoline Specification Vehicle

Waveform 1 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Throttle actuator positive terminal
Item
Content
Symbols (Terminal No.)
M+ (E11-5) - ME01 (E10-3)
Tool Setting
5 V/DIV., 1 msec./DIV.
Condition
Idle after engine warm-up
HINT:
The duty ratio varies depending on the throttle opening operation.

Waveform 2 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Throttle actuator negative terminal
Item
Content
Symbols (Terminal No.)
M- (E11-4) - ME01 (E10-3)
Tool Setting
5 V/DIV., 1 msec./DIV.
Condition
Idle after engine warm-up
HINT:
The duty ratio varies depending on the throttle opening operation.

Waveform 3 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
(a) Camshaft position sensor
Item
Content
Symbols (Terminal No.)
(a) G2 (E11-26) - NE- (E11-34)
Tool Setting
5 V/DIV., 20 msec./DIV.
Condition
Idle after engine warm-up
(b) Crankshaft position sensor
Item
Content
Symbols (Terminal No.)
(b) NE+ (E11-27) - NE- (E11-34)
Tool Setting
5 V/DIV., 20 msec./DIV.
Condition
Idle after engine warm-up
HINT:
The wavelength becomes shorter as engine speed increases.

Waveform 4 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Vehicle speed signal
Item
Content
Symbols (Terminal No.)
SPD (E9-8) - E1 (E11-3)
Tool Setting
2 V/DIV., 10 msec./DIV.
Condition
Driving at 40 km/h (25 mph)
HINT:
The wavelength becomes shorter as vehicle speed increases.

Waveform 5 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
(a) Igniter IGT signal (from ECM to igniter)
Item
Content
Symbols (Terminal No.)
(a) IGT1 (E11-17) to IGT4 (E11-14) - E1 (E11-3)
Tool Setting
2 V/DIV., 20 msec./DIV.
Condition
Idling
(b) Igniter IGF signal (from igniter to ECM)
Item
Content
Symbols (Terminal No.)
(b) IGF1 (E11-23) - E1 (E11-3)
Tool Setting
2 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as engine speed increases.

Waveform 6 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Fuel injector
Item
Content
Symbols (Terminal No.)
#10 (E10-6) to #40 (E10-1) - E01 (E11-7)
Tool Setting
20 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as engine speed increases.

Waveform 7 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
VVT OCV
Item
Content
Symbols (Terminal No.)
OC1+ (E11-13) - OC1- (E11-12)
Tool Setting
5 V/DIV., 1 msec./DIV.
Condition
Accelerate slowly after engine warm-up
HINT:
VVT OCV DUTY (%) = A/B x 100

Waveform 8 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Knock sensor
Item
Content
Symbols (Terminal No.)
KNK1 (E11-29) - EKNK (E11-30)
Tool Setting
0.01 to 10 V/DIV., 0.01 to 10 msec./DIV.
Condition
After warming up engine, keep engine speed at 4,000 rpm
HINT:
  1. The wavelength becomes shorter as engine speed increases.
  2. The waveform and amplitudes displayed differ slightly depending on the vehicle.

Waveform 9 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Heated oxygen (HO2) sensor (sensor 1)
Item
Content
Symbols (Terminal No.)
OX1A (E11-21) - E2 (E11-28)
Tool Setting
0.2 V/DIV., 200 msec./DIV.
Condition
Engine maintained at 2,500 rpm when engine warmed up
HINT:
In the Data List, item O2S B1 S1 shows the ECM input values from the rear HO2 sensor (sensor 1).

Waveform 10 (Reference)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Tr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
Item
Content
Symbols (Terminal No.)
PRG (E10-23) - E01 (E11-7)
Tool Setting
10 V/DIV., 20 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.