Sfi System Terminals Of Ecm

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Sfi System -- Terminals Of Ecm



Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm

HINT:
Each ECM terminal's normal voltage is shown in the table below.
In the table, first follow 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 (E14-3) - E1 (E17-1)
L - BR
Battery (for measuring battery voltage and for ECM memory)
Always
9 to 14 V
+BM (E14-7) - E1 (E17-1)
R-W - BR
Power source of throttle motor
Always
9 to 14 V
IGSW (E14-9) - E1 (E17-1)
B-O - BR
Ignition switch
Ignition switch ON
9 to 14 V
+B (E14-1) - E1 (E17-1)
B - BR
Power source of ECM
Ignition switch ON
9 to 14 V
+B2 (E14-2) - E1 (E17-1)
B - BR
Power source of ECM
Ignition switch ON
9 to 14 V
OC1+ (E17-17) - OC1- (E17-16)
L-B - R-B
Camshaft timing oil control valve (OCV)
Ignition switch ON
Pulse generation
(see waveform 1)
OC2+ (E17-15) - OC2- (E17-14)
P-L - Y
Camshaft timing oil control valve (OCV)
Ignition switch ON
Pulse generation
(see waveform 1)
MREL (E14-8) - E1 (E17-1)
W-G - BR
MAIN relay
Ignition switch ON
9 to 14 V
VC (E15-23) - E2 (E15-28)
LG-B - BR
Power source for sensors (specific voltage)
Ignition switch ON
4.5 to 5.5 V
VG (E15-30) - E2G (E15-29)
L-W - L-R
Mass air flow meter
Idling, Shift lever position P or N, A/C switch OFF
0.5 to 3.0 V
THA (E15-22) - E2 (E15-28)
L-B - BR
Intake air temperature sensor
Idling, Intake air temperature 20°C (68°F)
0.5 to 3.4 V
THW (E15-21) - E2 (E15-28)
B - BR
Engine coolant temperature sensor
Idling, Engine coolant temperature 80°C (176°F)
0.2 to 1.0 V
VTA1 (E15-20) - E2 (E15-28)
B-R - BR
Throttle position sensor (for engine control)
Ignition switch ON, Throttle valve fully closed
0.5 to 1.2 V
VTA1 (E15-20) - E2 (E15-28)
B-R - BR
Throttle position sensor (for engine control)
Ignition switch ON, Throttle valve fully open
3.2 to 4.8 V
VTA2 (E15-19) - E2 (E15-28)
LG - BR
Throttle position sensor (for sensor malfunction detection)
Ignition switch ON, Accelerator pedal released
2.1 to 3.1 V
VTA2 (E15-19) - E2 (E15-28)
LG - BR
Throttle position sensor (for sensor malfunction detection)
Ignition switch ON, Accelerator pedal depressed
4.5 to 5.0 V
VPA (E14-18) - EPA (E14-20)
W-L - BR-W
Accelerator pedal position sensor (for engine control)
Ignition switch ON, Accelerator pedal released
0.5 to 1.1 V
VPA (E14-18) - EPA (E14-20)
W-L - BR-W
Accelerator pedal position sensor (for engine control)
Ignition switch ON, Accelerator pedal depressed
2.6 to 4.5 V
VPA2 (E14-19) - EPA2 (E14-21)
GR-G - BR-Y
Accelerator pedal position sensor (for sensor malfunctioning detection)
Ignition switch ON, Accelerator pedal released
1.2 to 2.0 V
VPA2 (E14-19) - EPA2 (E14-21)
GR-G - BR-Y
Accelerator pedal position sensor (for sensor malfunctioning detection)
Ignition switch ON, Accelerator pedal depressed
3.4 to 5.0 V
VCPA (E14-26) - EPA (E14-20)
LG-R - BR-W
Power source of accelerator pedal position sensor (for VPA)
Ignition switch ON
4.5 to 5.5 V
VCP2 (E14-27) - EPA2 (E14-21)
BR-R - BR-Y
Power source of accelerator pedal position sensor (for VPA2)
Ignition switch ON
4.5 to 5.5 V
HA1A (E16-2) - E04 (E16-7)
Y - W-B
A/F sensor heater
Idling
Pulse generation
(see waveform 2)
HA2A (E16-1) - E05 (E16-6)
R-L - W-B
A/F sensor heater
Idling
Pulse generation
(see waveform 2)
HA1A (E16-2) - E04 (E16-7)
Y - W-B
A/F sensor heater
Ignition switch ON
9 to 14 V
HA2A (E16-1) - E05 (E16-6)
R-L - W-B
A/F sensor heater
Ignition switch ON
9 to 14 V
A1A+ (E16-22) - E1 (E17-1)
B - BR
A/F sensor
Ignition switch ON
3.3 V *1
A2A+ (E16-23) - E1 (E17-1)
G - BR
A/F sensor
Ignition switch ON
3.3 V *1
A1A- (E16-30) - E1 (E17-1)
W - BR
A/F sensor
Ignition switch ON
3.0 V *1
A2A- (E16-31) - E1 (E17-1)
R - BR
A/F sensor
Ignition switch ON
3.0 V *1
HT1B (E15-1) - E1 (E17-1)
G - BR
Heated oxygen sensor heater
Idling
Below 3.0 V
HT2B (E16-5) - E1 (E17-1)
L - BR
Heated oxygen sensor heater
Idling
Below 3.0 V
HT1B (E15-1) - E1 (E17-1)
G - BR
Heated oxygen sensor heater
Ignition switch ON
9 to 14 V
HT2B (E16-5) - E1 (E17-1)
L - BR
Heated oxygen sensor heater
Ignition switch ON
9 to 14 V
OX1B (E15-18) - E2 (E15-28)
W - BR
Heated oxygen sensor
Maintain engine speed at 2,500 rpm for 2 minutes after warming up
Pulse generation
(see waveform 3)
OX2B (E16-33) - E2 (E15-28)
B - BR
Heated oxygen sensor
Maintain engine speed at 2,500 rpm for 2 minutes after warming up
Pulse generation
(see waveform 3)
#10 (E17-2) - E01 (E15-7)
#20 (E17-3) - E01 (E15-7)
#30 (E17-4) - E01 (E15-7)
#40 (E17-5) - E01 (E15-7)
#50 (E17-6) - E01 (E15-7)
#60 (E17-7) - E01 (E15-7)
L - W-B
G - W-B
R - W-B
W - W-B
L - W-B
Y - W-B
Injector
Ignition switch ON
9 to 14 V
#10 (E17-2) - E01 (E15-7)
#20 (E17-3) - E01 (E15-7)
#30 (E17-4) - E01 (E15-7)
#40 (E17-5) - E01 (E15-7)
#50 (E17-6) - E01 (E15-7)
#60 (E17-7) - E01 (E15-7)
L - W-B
G - W-B
R - W-B
W - W-B
L - W-B
Y - W-B
Injector
Idling
Pulse generation
(see waveform 4)
IGT1 (E15-8) - E1 (E17-1)
R - BR
Ignition coil (ignition signal)
Idling
Pulse generation
(see waveform 7)
IGT2 (E15-9) - E1 (E17-1)
R-L - BR
Ignition coil (ignition signal)
Idling
Pulse generation
(see waveform 7)
IGT3 (E15-10) - E1 (E17-1)
G-B - BR
Ignition coil (ignition signal)
Idling
Pulse generation
(see waveform 7)
IGT4 (E15-11) - E1 (E17-1)
G - BR
Ignition coil (ignition signal)
Idling
Pulse generation
(see waveform 7)
IGT5 (E15-12) - E1 (E17-1)
B-L - BR
Ignition coil (ignition signal)
Idling
Pulse generation
(see waveform 7)
IGT6 (E15-13) - E1 (E17-1)
P-L - BR
Ignition coil (ignition signal)
Idling
Pulse generation
(see waveform 7)
KNK1 (E16-29) - EKNK (E16-28)
B - W
Knock sensor
Maintain engine speed at 4,000 after warming up
Pulse generation
(see waveform 5)
KNK2 (E16-21) - EKN2 (E16-20)
R - G
Knock sensor
Maintain engine speed at 4,000 after warming up
Pulse generation
(see waveform 5)
VV1+ (E17-19) - VV1- (E17-29)
R - G
Variable valve timing (VVT) sensor
Idling
Pulse generation
(see waveform 6)
VV2+ (E17-18) - VV2- (E17-28)
Y - L
Variable valve timing (VVT) sensor
Idling
Pulse generation
(see waveform 6)
NE+ (E17-21) - NE- (E17-20)
B - W
Crankshaft position sensor
Idling
Pulse generation
(see waveform 6)
IGF1 (E15-24) - E1 (E17-1)
G-R - BR
Ignition coil
(ignition confirmation signal)
Ignition switch ON
4.5 to 5.5 V
IGF1 (E15-24) - E1 (E17-1)
G-R - BR
Ignition coil
(ignition confirmation signal)
Idling
Pulse generation
(see waveform 7)
PRG (E15-34) - E1 (E17-1)
L - BR
Purge VSV
Ignition switch ON
9 to 14 V
PRG (E15-34) - E1 (E17-1)
L - BR
Purge VSV
Idling
Pulse generation
(see waveform 8)
SPD (E13-8) - E1 (E17-1)
V-R - BR
Speed signal from combination meter
Ignition switch ON, Rotate driving wheel slowly
Pulse generation
(see waveform 9)
STA (E17-11) - E1 (E17-1)
B-Y - BR *2
L-Y - BR *3
Starter signal
Cranking
9 to 14 V
NSW (E16-8) - E1 (E17-1)
L-Y - BR
Park/Neutral position switch signal
Ignition switch ON, Other shift position not in P or N
9 to 14 V
NSW (E16-8) - E1 (E17-1)
L-Y - BR
Park/Neutral position switch signal
Ignition switch ON, Shift position in P or N
0 to 3.0 V
STP (E14-15) - E1 (E17-1)
G-W - BR
Stop light switch
Brake pedal depressed
7.5 to 14 V
STP (E14-15) - E1 (E17-1)
G-W - BR
Stop light switch
Brake pedal released
Below 1.5 V
ST1- (E14-16) - E1 (E17-1)
R-L - BR
Stop light switch
(ST1 terminal status is opposite to STP terminal)
Ignition switch ON, Brake pedal depressed
Below 1.5 V
ST1- (E14-16) - E1 (E17-1)
R-L - BR
Stop light switch
(ST1 terminal status is opposite and STP terminal)
Ignition switch ON, Brake pedal released
7.5 to 14 V
M+ (E15-5) - ME01 (E16-3)
B - W-B
Throttle actuator
Idling with warm engine
Pulse generation
(see waveform 10)
M- (E15-4) - ME01 (E16-3)
W - W-B
Throttle actuator
Idling with warm engine
Pulse generation
(see waveform 11)
FC (E14-10) - E1 (E17-1)
LG-B - BR
Fuel pump control
Ignition switch ON
9 to 14 V
FPR (E17-30) - E1 (E17-1)
P-L - BR
Fuel pump control
Ignition switch ON, STA signal OFF
0 to 3.0 V
FPR (E17-30) - E1 (E17-1)
P-L - BR
Fuel pump control
Ignition switch ON, STA signal ON
9 to 14 V
W (E13-30) - E1 (E17-1)
R-B - BR
MIL
Ignition switch ON
Below 3.0 V
W (E13-30) - E1 (E17-1)
R-B - BR
MIL
Idling
9 to 14 V
TC (E14-23) - E1 (E17-1)
P-B - BR
Terminal TC of DLC3
Ignition switch ON
9 to 14 V
SIL (E14-30) - E1 (E17-1)
R-Y - BR
Terminal SIL of DLC3
Connect intelligent tester to DLC3
Pulse generation
TACH (E13-1) - E1 (E17-1)
B-W - BR
Engine speed
Idling
Pulse generation
(see waveform 12)
ACIS (E15-33) - E1 (E17-1)
G-B - BR
VSV for ACIS
Ignition switch ON
9 to 14 V
PSW (E17-10) - E1 (E17-1)
G-Y - BR
Power steering pressure switch
Ignition switch ON
9 to 14 V
HINT:
*1: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
*2: A/T
*3: M/T

WAVEFORM 1
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. Camshaft timing Oil Control Valve (OCV)
Item
Content
Symbols (Terminal No.)
OC1+ (E17-17) - OC1- (E17-16)
OC2+ (E17-15) - OC2- (E17-14)
Tool Setting
5 V/DIV., 1 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 2
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. A/F sensor heater
Item
Content
Symbols (Terminal No.)
HA1A (E16-2) - E04 (E16-7)
HA2A (E16-1) - E05 (E16-6)
Tool Setting
5 V/DIV., 10 msec./DIV.
Condition
Idling

WAVEFORM 3
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. Heated oxygen sensor
Item
Content
Symbols (Terminal No.)
OX1B (E15-18) - E2 (E15-28)
OX2B (E16-33) - E2 (E15-28)
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 B1S2 shows the ECM input values from the heated oxygen sensor.

WAVEFORM 4
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. Fuel injector
Item
Content
Symbols (Terminal No.)
#10 (E17-2) - E01 (E15-7)
#20 (E17-3) - E01 (E15-7)
#30 (E17-4) - E01 (E15-7)
#40 (E17-5) - E01 (E15-7)
#50 (E17-6) - E01 (E15-7)
#60 (E17-7) - E01 (E15-7)
Tool Setting
30 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 5
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. Knock sensor
Item
Content
Symbols (Terminal No.)
KNK1 (E16-29) - EKNK (E16-28)
KNK2 (E16-21) - EKN2 (E16-20)
Tool Setting
0.01 to 10 V/DIV., 0.01 to 10 msec./DIV.
Condition
Maintain engine speed at 4,000 rpm after warming up engine
HINT:
  1. The wavelength becomes shorter as the engine rpm increases.
  2. The waveform and amplitude displayed differ slightly depending on the vehicle.

WAVEFORM 6
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. (a) Crankshaft position sensor
  2. (b) VVT sensor bank 1
  3. (c) VVT sensor bank 2
Item
Content
Symbols (Terminal No.)
NE+ (E17-21) - NE- (E17-20)
VV1+ (E17-19) - VV1- (E17-29)
VV2+ (E17-18) - VV2- (E17-28)
Tool Setting
5 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 7
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. (a) Igniter IGT signal (from ECM to igniter)
  2. (b) Igniter IGF signal (from igniter to ECM)
Item
Content
Symbols (Terminal No.)
IGT1 (E15-8) - E1 (E17-1)
IGT2 (E15-9) - E1 (E17-1)
IGT3 (E15-10) - E1 (E17-1)
IGT4 (E15-11) - E1 (E17-1)
IGT5 (E15-12) - E1 (E17-1)
IGT6 (E15-13) - E1 (E17-1)
IGF1 (E15-24) - E1 (E17-1)
Tool Setting
2 V/DIV., 20 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.

WAVEFORM 8
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. EVAP VSV
Item
Content
Symbols (Terminal No.)
PRG (E15-34) - E1 (E17-1)
Tool Setting
10 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
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. Vehicle speed signal
Item
Content
Symbols (Terminal No.)
SPD (E13-8) - E1 (E17-1)
Tool Setting
2 V/DIV., 20 msec./DIV.
Condition
Driving at 20 mph (12 km/h)
HINT:
The wavelength becomes shorter as the vehicle speed increases.

WAVEFORM 10
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. Throttle actuator positive terminal
Item
Content
Symbols (Terminal No.)
M+ (E15-5) - ME01 (E16-3)
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
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. Throttle actuator negative terminal
Item
Content
Symbols (Terminal No.)
M- (E15-4) - ME01 (E16-3)
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 12
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Sfi System.Sfi System Terminals Of Ecm
  1. Engine speed signal
Item
Content
Symbols (Terminal No.)
TACH (E13-1) - E1 (E17-1)
Tool Setting
5 V/DIV., 10 msec./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine rpm increases.