Sfi System (For Hatchback) Terminals Of Ecm

Engine Hybrid System. Yaris. Ncp93, 131
1Nz-Fe Engine Control. Yaris. Ncp93, 131

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Sfi System (For Hatchback) -- Terminals Of Ecm



Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) 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.

Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
A72-1 (BATT) - C51-16 (E1)
Y - W-B
Battery (for measuring battery voltage and for ECM memory)
Always
11 to 14 V
A72-2 (+B) - C51-16 (E1)
B - W-B
Power source of ECM
Ignition switch ON
11 to 14 V
A72-3 (+B2) - C51-16 (E1)
L - W-B
Power source of ECM
Ignition switch ON
11 to 14 V
C51-29 (+BM) - C51-16 (E1)
GR - W-B
Power source of throttle actuator
Always
11 to 14 V
C51-57 (IGT1) - C51-16 (E1)
W - W-B
Ignition coil
(ignition signal)
Idling
Pulse generation
(See waveform 1)
C51-56 (IGT2) - C51-16 (E1)
V - W-B
C51-55 (IGT3) - C51-16 (E1)
G - W-B
C51-54 (IGT4) - C51-16 (E1)
LG - W-B
C51-102 (IGF1) - C51-16 (E1)
Y - W-B
Ignition coil
(ignition confirmation signal)
Ignition switch ON
4.5 to 5.5 V
Idling
Pulse generation
(See waveform 1)
C51-78 (NE+) - C51-110 (NE-)
L - P
Crankshaft position sensor
Idling
Pulse generation
(See waveform 2)
C51-82 (VV1+) - C51-110 (NE-)
W - P
Camshaft position sensor
Idling
Pulse generation
(See waveform 2)
C51-20 (#10) - C51-51 (E01)
B - BR
Fuel injector
Ignition switch ON
11 to 14 V
C51-17 (#20) - C51-51 (E01)
GR - BR
C51-18 (#30) - C51-51 (E01)
P - BR
Idling
Pulse generation
(See waveform 3)
C51-19 (#40) - C51-51 (E01)
L - BR
C51-23 (HA1A) - C51-52 (E04)
G - W-B
Air fuel ratio sensor heater (bank 1 sensor 1)
Ignition switch ON
11 to 14 V
Idling with warm engine
Pulse generation
(See waveform 4)
C51-133 (A1A+) - C51-16 (E1)
R - W-B
Air fuel ratio sensor (bank 1 sensor 1)
Ignition switch ON
3.3 V*
C51-134 (A1A-) - C51-16 (E1)
G - W-B
Air fuel ratio sensor (bank 1 sensor 1)
Ignition switch ON
2.9 V*
C51-22 (HT1B) - C51-52 (E04)
L - W-B
Heated oxygen sensor heater (bank 1 sensor 2)
Ignition switch ON
11 to 14 V
Idling
Below 3.0 V
C51-103 (OX1B) - C51-135 (EX1B)
B - GR
Heated oxygen sensor (bank 1 sensor 2)
Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor
Pulse generation
(See waveform 5)
C51-123 (KNK1) - C51-124 (EKNK)
R - G
Knock sensor
Engine speed maintained at 4000 rpm after warming up engine
Pulse generation
(See waveform 6)
A72-44 (SPD) - C51-16 (E1)
V - W-B
Speed signal from combination meter
Driving at 20 km/h (12 mph)
Pulse generation
(See waveform 7)
C51-93 (THW) - C51-94 (ETHW)
V - BR
Engine coolant temperature sensor
Idling, Engine coolant temperature 80°C (176°F)
0.2 to 1.0 V
C51-90 (THA) - C51-122 (ETHA)
P - G
Intake air temperature sensor
(built into mass air flow meter)
Idling, Intake air temperature 20°C (68°F)
0.5 to 3.4 V
C51-91 (VG) - C51-92 (E2G)
GR - L
Mass air flow meter
Idling, Shift lever position neutral, air conditioner OFF
0.5 to 3.0 V
A72-27 (W) - C51-16 (E1)
B - W-B
MIL
Ignition switch ON (MIL goes off)
Below 3.0 V
Idling
11 to 14 V
C51-63 (NSW) - C51-16 (E1)
BE - W-B
Park/neutral position switch signal (for A/T)
Clutch start switch signal (for M/T)
Ignition switch ON,
Shift lever in P, N (for A/T)
Clutch pedal depressed (for M/T)
Below 1.5 V
Ignition switch ON,
Shift lever not in P, N (for A/T)
Clutch pedal released (for M/T)
11 to 14 V
Cranking
6 to 13 V
A72-22 (STA) - C51-16 (E1)
BR - W-B
Starter signal
Ignition switch ON
Below 1.5 V
Cranking
6 to 13 V
C51-84 (VTA1) - C51-116 (ETA)
Y - V
Throttle position sensor (for engine control)
Ignition switch ON,
Throttle valve fully closed
0.5 to 1.1 V
Ignition switch ON,
Throttle valve fully open
3.2 to 4.8 V
C51-83 (VTA2) - C51-116 (ETA)
GR - V
Throttle position sensor (for sensor malfunction detection)
Ignition switch ON,
Throttle valve fully closed
2.1 to 3.1 V
Ignition switch ON,
Throttle valve fully open
4.6 to 5.0 V
C51-115 (VCTA) - C51-116 (ETA)
W - V
Power source of throttle position sensor
Ignition switch ON
4.5 to 5.5 V
A72-53 (VCPA) - A72-52 (EPA)
G - V
Power source of accelerator pedal position sensor (for VPA)
Ignition switch ON
4.5 to 5.5 V
A72-51 (VPA) - A72-52 (EPA)
R - V
Accelerator pedal position sensor (for engine control)
Ignition switch ON, Accelerator pedal released
0.5 to 1.1 V
Ignition switch ON, Accelerator pedal fully depressed
2.5 to 4.5 V
A72-54 (VPA2) - A72-55 (EPA2)
L - B
Accelerator pedal position sensor (for sensor malfunction detection)
Ignition switch ON, Accelerator pedal released
1.2 to 2.0 V
Ignition switch ON, Accelerator pedal fully depressed
3.4 to 5.5 V
A72-56 (VCP2) - A72-55 (EPA2)
W - B
Power source of accelerator pedal position sensor (for VPA2)
Ignition switch ON
4.5 to 5.5 V
C51-60 (M+) - C51-59 (ME01)
G - BR
Throttle actuator
Idling with warm engine
Pulse generation
(See waveform 8)
C51-30 (M-) - C51-59 (ME01)
BR - BR
Throttle actuator
Idling with warm engine
Pulse generation
(See waveform 9)
A72-9 (STP) - C51-16 (E1)
LG - W-B
Stop light switch
Brake pedal depressed
7.5 to 14 V
Brake pedal released
Below 1.5 V
A72-10 (ST1-) - C51-16 (E1)
Y - W-B
Stop light switch
Ignition switch ON, Brake pedal depressed
Below 1.5 V
Ignition switch ON, Brake pedal released
11 to 14 V
C51-76 (PRG) - C51-16 (E1)
L - W-B
Purge VSV
Ignition switch ON
11 to 14 V
Idling, under purge control
Pulse generation
(See waveform 10)
A72-21 (FC) - C51-16 (E1)
V - W-B
Fuel pump control
Ignition switch ON
11 to 14 V
Idling
Below 1.5 V
A72-23 (TC) - C51-16 (E1)
L - W-B
Terminal TC of DLC3
Ignition switch ON
11 to 14 V
C51-75 (OC1+) - C51-74 (OC1-)
BR - Y
Camshaft timing oil control valve
Idling
Pulse generation
(See waveform 11)
A72-13 (CANH) - C51-16 (E1)
L - W-B
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 12)
A72-26 (CANL) - C51-16 (E1)
W - W-B
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 13)
A72-37 (IGSW) - C51-16 (E1)
R - W-B
Ignition switch
Ignition switch ON
11 to 14 V
A72-46 (MREL) - C51-16 (E1)
GR - W-B
EFI MAIN relay
Ignition switch ON
11 to 14 V
A72-34 (VCPP) - A72-36 (EPPM)
V - BE
Power source of canister pressure sensor
Ignition switch ON
4.5 to 5.5 V
A72-35 (PPMP) - A72-36 (EPPM)
L - BE
Canister pressure sensor
Ignition switch ON
3.0 to 3.6 V
A72-5 (VPMP) - C51-16 (E1)
P - W-B
Vent valve (built into canister pump module)
Ignition switch ON
11 to 14 V
A72-18 (MPMP) - C51-16 (E1)
V - W-B
Leak detection pump (built into canister pump module)
Leak detection pump off
Below 3.0 V
Leak detection pump on
9 to 14 V
A72-31 (TACH) - C51-16 (E1)
LG - W-B
Engine speed
Idling
Pulse generation
(See waveform 14)
A72-4 (ELS1) - C51-16 (E1)
G - W-B
Electric load
Tail light switch on
7.5 to 14 V
Tail light switch off
Below 1.5 V
A72-17 (ELS2) - C51-16 (E1)
B - W-B
Electric load
Defogger switch on
7.5 to 14 V
Defogger switch off
Below 1.5 V
C51-100 (ALT) - C51-16 (E1)
G - W-B
Generator assembly
Ignition switch ON
11 to 14 V
A72-7 (FANL) - C51-16 (E1)
R - W-B
FAN NO.1 relay
Ignition switch ON Cooling fan not operated
11 to 14 V
Cooling fan operated:
Idling with A/C ON or
High engine coolant temperature
Below 1.5 V
A72-8 (FANH) - C51-16 (E1)
G - W-B
FAN NO.2 relay
Cooling fan operated at high speed:
Idling with high engine coolant temperature
Below 1.5 V
C51-16 (E1) - Body ground
W-B - Body ground
Ground
Always
Below 1 Ω
C51-51 (E01) - Body ground
BR - Body ground
Ground
Always
Below 1 Ω
C51-21 (E02) - Body ground
BR - Body ground
Ground
Always
Below 1 Ω
C51-52 (E04) - Body ground
W-B - Body ground
Ground
Always
Below 1 Ω
A72-50 (EC) - Body ground
W-B - Body ground
Ground
Always
Below 1 Ω
C51-59 (ME01) - Body ground
BR - Body ground
Ground
Always
Below 1 Ω
C51-58 (GE01) - C51-59 (ME01)
BR - BR
Shielded earth (ground) circuit of throttle actuator
Always
Below 1 Ω
*: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

WAVEFORM 1
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Igniter Signal (IGT and IGF signal)
ECM Terminal Name
CH1: Between IGT (1 to 4) and E1
CH2: Between IGF1 and E1
Tester Range
5 V/DIV., 20 ms./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine speed increases.

WAVEFORM 2
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Crankshaft Position Sensor Signal and Camshaft Position Sensor Signal
ECM Terminal Name
CH1: Between VV1+ and NE-
CH2: Between NE+ and NE-
Tester Range
5 V/DIV., 20 ms./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine speed increases.

WAVEFORM 3
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
No. 1 (to No. 4) Injector Signal
ECM Terminal Name
Between #10 (to #40) and E01
Tester Range
20 V/DIV., 20 ms./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine speed increases.

WAVEFORM 4
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Air Fuel Ratio Sensor Heater Signal
ECM Terminal Name
Between HA1A and E04
Tester Range
5 V/DIV., 10 ms./DIV.
Condition
Idling with warm engine
HINT:
The duty ratio varies depending on the engine driving condition.

WAVEFORM 5
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Heated Oxygen Sensor Signal
ECM Terminal Name
Between OX1B and EX1B
Tester Range
0.2 V/DIV., 200 ms./DIV.
Condition
Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor
HINT:
In the Data List, the item O2S B1S2 shows the values input to the ECM from the heated oxygen sensor.

WAVEFORM 6
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Knock Sensor Signal
ECM Terminal Name
Between KNK1 and EKNK
Tester Range
1 V/DIV., 1 ms./DIV.
Condition
Engine speed maintained at 4000 rpm after warming up engine
HINT:
  1. The wavelength becomes shorter as the engine speed increases.
  2. The waveforms and amplitudes displayed differ slightly depending on the vehicle.

WAVEFORM 7
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Vehicle Speed Signal
ECM Terminal Name
Between SPD and E1
Tester Range
5 V/DIV., 20 ms./DIV.
Condition
Driving at 20 km/h (12 mph)
HINT:
The wavelength becomes shorter as the vehicle speed increases.

WAVEFORM 8
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Throttle Actuator Positive Terminal Signal
ECM Terminal Name
Between M+ and ME01
Tester Range
5 V/DIV., 1 ms./DIV.
Condition
Idling with warm engine
HINT:
The duty ratio varies depending on the throttle actuator operation.

WAVEFORM 9
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Throttle Actuator Negative Terminal Signal
ECM Terminal Name
Between M- and ME01
Tester Range
5 V/DIV., 1 ms./DIV.
Condition
Idling with warm engine
HINT:
The duty ratio varies depending on the throttle actuator operation.

WAVEFORM 10
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Purge VSV Signal
ECM Terminal Name
Between PRG and E1
Tester Range
10 V/DIV., 20 ms./DIV.
Condition
Idling under purge control
HINT:
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.

WAVEFORM 11
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Camshaft Timing Oil Control Valve Assembly Signal
ECM Terminal Name
Between OC1+ and OC1-
Tester Range
5 V/DIV., 1 ms./DIV.
Condition
Idling

WAVEFORM 12
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
CAN Communication Signal (Reference)
ECM Terminal Name
Between CANH and E1
Tester Range
1 V/DIV., 10 μsec./DIV.
Condition
Ignition switch ON
HINT:
The waveform varies depending on the CAN communication signal.

WAVEFORM 13
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
CAN Communication Signal (Reference)
ECM Terminal Name
Between CANL and E1
Tester Range
1 V/DIV., 10 μsec./DIV.
Condition
Ignition switch ON
HINT:
The waveform varies depending on the CAN communication signal.

WAVEFORM 14
Yaris. Ncp93, 131.1Nz-Fe Engine Control.Sfi System (For Sedan).Sfi System (For Hatchback) Terminals Of Ecm
Engine Speed Signal
ECM Terminal Name
Between TACH and E1
Tester Range
5 V/DIV., 10 ms./DIV.
Condition
Idling
HINT:
The wavelength becomes shorter as the engine speed increases.