Sfi System Terminals Of Ecm

Engine Hybrid System. Corolla. Zre142 Aze141
2Zr-Fe Engine Control. Corolla. Zre142 Aze141

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Sfi System -- Terminals Of Ecm



Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm

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

Terminal No. (Symbol)
Wiring Colors
Terminal Descriptions
Conditions
Specified Conditions
A50-20 (BATT) - B31-105 (E1)
P - BR
Battery (for measuring battery voltage and for ECM memory)
Always
11 to 14 V
A50-2 (+B) - B31-105 (E1)
B - BR
Power source of ECM
Ignition switch to ON
11 to 14 V
A50-1 (+B2) - B31-105 (E1)
B - BR
Power source of ECM
Ignition switch to ON
11 to 14 V
A50-3 (+BM) - B31-105 (E1)
B - BR
Power source of throttle actuator
Always
11 to 14 V
B31-109 (IGT1) - B31-105 (E1)
W-L - BR
Ignition coil
(ignition signal)
Idling
Pulse generation
(see waveform 1)
B31-108 (IGT2) - B31-105 (E1)
B - BR
B31-107 (IGT3) - B31-105 (E1)
L-B - BR
B31-106 (IGT4) - B31-105 (E1)
B - BR
B31-82 (IGF1) - B31-105 (E1)
Y - BR
Ignition coil
(ignition confirmation signal)
Ignition switch to ON
4.5 to 5.5 V
Idling
Pulse generation
(see waveform 1)
B31-93 (NE+) - B31-117 (NE-)
R - G
Crankshaft position sensor
Idling
Pulse generation
(see waveform 2)
B31-94 (G2+) - B31-118 (G2-)
R - W
Camshaft position sensor (for intake camshaft)
Idling
Pulse generation
(see waveform 3)
B31-98 (EV1+) - B31-120 (EV1-)
B - Y*2
B - W*3
Camshaft position sensor (for exhaust camshaft)
Idling
Pulse generation
(see waveform 3)
B31-86 (#10) - B31-46 (E01)
V - W-B
Fuel injector
Ignition switch to ON
11 to 14 V
B31-85 (#20) - B31-46 (E01)
Y - W-B
B31-84 (#30) - B31-46 (E01)
G - W-B
B31-83 (#40) - B31-46 (E01)
LG - W-B
B31-86 (#10) - B31-46 (E01)
V - W-B
Idling
Pulse generation
(see waveform 4)
B31-85 (#20) - B31-46 (E01)
Y - W-B
B31-84 (#30) - B31-46 (E01)
G - W-B
B31-83 (#40) - B31-46 (E01)
LG - W-B
B31-104 (HA1A) - B31-41 (E04)
R - W-B
Air fuel ratio sensor (sensor 1) heater
Ignition switch to ON
11 to 14 V
Idling
Pulse generation
(see waveform 5)
B31-103 (A1A+) - B31-105 (E1)
Y - BR
Air fuel ratio sensor (sensor 1)
Ignition switch to ON
3.3 V*1
B31-126 (A1A-) - B31-105 (E1)
L - BR
2.9 V*1
B31-63 (HT1B) - B31-81 (E03)
P - W-B
Heated oxygen sensor (sensor 2) heater
Ignition switch to ON
11 to 14 V
Idling
Below 3.0 V
B31-80 (OX1B) - B31-79 (O1B-)
B - W
Heated oxygen sensor (sensor 2)
Engine speed maintained at 2500 rpm for 2 minutes after warming up engine
Pulse generation
(see waveform 6)
B31-110 (KNK1) - B31-111 (EKNK)
B - W
Knock sensor
Engine speed maintained at 4000 rpm after warming up engine
Pulse generation
(see waveform 7)
A50-38 (SPD) - B31-105 (E1)
V - BR
Speed signal from combination meter
Rotate driving wheel slowly
Pulse generation
(see waveform 8)
B31-64 (THW) - B31-65 (ETHW)
B - BR
Engine coolant temperature sensor
Idling, Engine coolant temperature 80°C (176°F)
0.2 to 1.0 V
B31-87 (THA) - B31-88 (ETHA)
P - BR-W
Intake air temperature sensor (built into mass air flow meter
Idling, Intake air temperature 20°C (68°F)
0.5 to 3.4 V
B31-69 (VG) - B31-92 (E2G)
V - B
Mass air flow meter
Idling, shift lever in P or N (neutral), A/C switch OFF
0.5 to 3.0 V
A50-24 (W) - B31-105 (E1)
R - BR
MIL
Ignition switch to ON (MIL goes ON)
Below 3.0 V
Idling
11 to 14 V
A50-48 (STA) - B31-105 (E1)
LG - BR
Starter signal
Ignition switch to ON
Below 1.5 V
Cranking
5.5 V or more
A50-25 (STAR) - B31-105 (E1)
W - BR
Starter relay control
Ignition switch to ON, shift lever not in P or N
11 to 14 V
Ignition switch to ON, shift lever in P or N
Below 3 V
A50-13 (ACCR) - B31-105 (E1)
L-Y - BR
ACC (cut) relay control signal
Ignition switch to ON
8 to 14 V
Cranking
0.1 to 0.8 V
A50-14 (STSW) - B31-105 (E1)
W-G - BR
Starter relay operation signal
Ignition switch to ON
Below 1.5 V
Cranking
8 to 14 V
B31-113 (VTA1) - B31-90 (ETA)
LG - BR
Throttle position sensor (for engine control)
Ignition switch to ON,
Accelerator pedal fully released
0.5 to 1.1 V
Ignition switch to ON,
Accelerator pedal fully depressed
3.2 to 4.8 V
B31-112 (VTA2) - B31-90 (ETA)
R-G - BR
Throttle position sensor (for sensor malfunction detection)
Ignition switch to ON, Accelerator pedal fully released
2.1 to 3.1 V
Ignition switch to ON, Accelerator pedal fully depressed
4.6 to 5.0 V
B31-89 (VCTA) - B31-90 (ETA)
Y - BR
Power source of sensor (specific voltage)
Ignition switch to ON
4.5 to 5.5 V
A50-57 (VCPA) - A50-59 (EPA)
P - R
Power source of accelerator pedal position sensor (for VPA)
Ignition switch to ON
4.5 to 5.5 V
A50-55 (VPA) - A50-59 (EPA)
L - R
Accelerator pedal position sensor (for engine control)
Ignition switch to ON, Accelerator pedal fully released
0.5 to 1.1 V
Ignition switch to ON, Accelerator pedal fully depressed
2.6 to 4.5 V
A50-56 (VPA2) - A50-60 (EPA2)
Y - BE
Accelerator pedal position sensor (for sensor malfunctioning detection)
Ignition switch to ON, Accelerator pedal fully released
1.2 to 2.0 V
Ignition switch to ON, Accelerator pedal fully depressed
3.4 to 4.75 V
A50-58 (VCP2) - A50-60 (EPA2)
B - BE
Power source of accelerator pedal position sensor (for VPA2)
Ignition switch to ON
4.5 to 5.5 V
B31-43 (M+) - B31-44 (ME01)
P - W-B
Throttle actuator
Idling with warm engine
Pulse generation
(see waveform 9)
B31-42 (M-) - B31-44 (ME01)
L - W-B
Throttle actuator
Idling with warm engine
Pulse generation
(see waveform 10)
A50-36 (STP) - B31-105 (E1)
L - BR
Stop light switch
Brake pedal depressed
7.5 to 14 V
Brake pedal released
Below 1.5 V
A50-35 (ST1-) - B31-105 (E1)
R - BR
Stop light switch
Ignition switch to ON, Brake pedal depressed
Below 1.5 V
Ignition switch to ON, Brake pedal released
7.5 to 14 V
B31-62 (PRG) - B31-105 (E1)
L-B - BR
Purge VSV
Ignition switch to ON
11 to 14 V
Idling, under purge control
Pulse generation
(see waveform 11)
A50-19 (FC) - B31-105 (E1)
BE - BR
Fuel pump control
Ignition switch to ON
11 to 14 V
Idling
Below 1.5 V
A50-15 (TACH) - B31-105 (E1)
GR - BR
Engine speed
Idling
Pulse generation
(see waveform 12)
A50-41 (TC) - B31-105 (E1)
P - BR
Terminal TC of DLC3
Ignition switch to ON
11 to 14 V
B31-74 (OC1+) - B31-96 (OC1-)
B - V-Y
Camshaft timing oil control valve (for intake camshaft)
Idling
Pulse generation
(see waveform 13)
A50-8 (CANH) - B31-105 (E1)
Y - BR
CAN communication line
Engine stopped and ignition switch to ON
Pulse generation
(see waveform 14)
A50-9 (CANL) - B31-105 (E1)
W - BR
CAN communication line
Engine stopped and ignition switch to ON
Pulse generation
(see waveform 15)
A50-27 (IGSW) - B31-105 (E1)
B - BR
Ignition switch
Ignition switch to ON
11 to 14 V
A50-44 (MREL) - B31-105 (E1)
L - BR
EFI MAIN relay
Ignition switch to ON
11 to 14 V
B31-75 (OE1+) - B31-97 (OE1-)
BR-B - P
Camshaft timing oil control valve (for exhaust camshaft)
Idling
Pulse generation
(see waveform 16)
B31-119 (VCV1) - B31-105 (E1)
BR-R - BR
Power source of camshaft position sensor (for intake camshaft)
Ignition switch to ON
4.5 to 5.5 V
B31-121 (VCE1) - B31-105 (E1)
BR - BR
Power source of camshaft position sensor (for exhaust camshaft)
Ignition switch to ON
4.5 to 5.5 V
A50-31 (ELS1) - B31-105 (E1)
G - BR
Electric load
Taillight switch ON
7.5 to 14 V
Taillight switch OFF
Below 1.5 V
A50-50 (ELS2) - B31-105 (E1)
B - BR
Electric load
Defogger switch ON
7.5 to 14 V
Defogger switch OFF
Below 1.5 V
A50-42 (VPMP) - B31-105 (E1)
W - BR
Vent valve (built into canister pump module)
Ignition switch to ON
11 to 14 V
A50-34 (MPMP) - B31-105 (E1)
R - BR
Leak detection pump (built into canister pump module)
Leak detection pump OFF
Below 3 V
Leak detection pump ON
9 to 14 V
B31-116 (VCPP) - B31-115 (EPPM)
V - G
Power source for canister pressure sensor (specific voltage)
Ignition switch to ON
4.5 to 5.5 V
B31-68 (PPMP) - B31-115 (EPPM)
Y - G
Canister pressure sensor (built into canister pump module)
Ignition switch to ON
3 to 3.6 V
A50-43 (RFC) - B31-105 (E1)
R-G - BR
Cooling fan control
Ignition switch to ON, A/C switch ON (Max Cool)
Pulse generation
(see waveform 17)
HINT:
*1: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
*2: TMC Made
*3: except TMC Made

WAVEFORM 1
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Igniter IGT Signal (from ECM to Igniter)
ECM Terminal Name
Between IGT (1 to 4) and E1
Between IGF1 and E1
Tester Range
2 V/DIV, 20 ms/DIV
Condition
Idling
HINT:
The wavelength becomes shorter as the engine speed increases.

WAVEFORM 2
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Crankshaft Position Sensor
ECM Terminal Name
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
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Camshaft Position Sensor
ECM Terminal Name
Between G2+ and G2-
Between EV1+ and EV1-
Tester Range
5 V/DIV, 20 ms/DIV
Condition
Idling
HINT:
The wavelength becomes shorter as the engine speed increases.

WAVEFORM 4
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System 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 5
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Air Fuel Ratio Sensor (Sensor 1) Heater
ECM Terminal Name
Between HA1A and E04
Tester Range
5 V/DIV, 10 ms/DIV
Condition
Idling
HINT:
The wavelength varies in accordance with the engine operating condition.

WAVEFORM 6
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Heated Oxygen Sensor (Sensor 2)
ECM Terminal Name
Between OX1B and O1B-
Tester Range
0.2 V/DIV. 200 ms/DIV
Condition
Engine speed maintained at 2500 rpm for 2 minutes after warming up engine
HINT:
In the Data List, the items O2S B1S2 show the values input to the ECM from the heated oxygen sensor.

WAVEFORM 7
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Knock Sensor
ECM Terminal Name
Between KNK1 and EKNK
Tester Range
1V/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 condition.

WAVEFORM 8
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Vehicle Speed Signal
ECM Terminal Name
Between SPD and E1
Tester Range
5 V/DIV, 20 ms/DIV
Condition
Rotate driving wheel slowly
HINT:
The wavelength becomes shorter as the vehicle speed increases.

WAVEFORM 9
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Throttle Actuator Positive Terminal
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
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Throttle Actuator Negative Terminal
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 11
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Purge VSV
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 12
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System 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.

WAVEFORM 13
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Camshaft Timing Oil Control Valve (for Intake Camshaft)
ECM Terminal Name
Between OC1+ and OC1-
Tester Range
5 V/DIV, 1 ms/DIV
Condition
Idling

WAVEFORM 14
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
CAN Communication Signal (Reference)
ECM Terminal Name
Between CANH and E1
Tester Range
1 V/DIV, 10 μs/DIV
Condition
Engine stopped and ignition switch to ON
HINT:
The waveform varies depending on the CAN communication signal.

WAVEFORM 15
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
CAN Communication Signal (Reference)
ECM Terminal Name
Between CANL and E1
Tester Range
1 V/DIV, 10 μs/DIV
Condition
Engine stopped and ignition switch to ON
HINT:
The waveform varies depending on the CAN communication signal.

WAVEFORM 16
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Camshaft Timing Oil Control Valve (for Exhaust Camshaft)
ECM Terminal Name
Between OE1+ and OE1-
Tester Range
5 V/DIV, 1 ms/DIV
Condition
Idling

WAVEFORM 17
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.Sfi System Terminals Of Ecm
Cooling Fan Control Signal
ECM Terminal Name
Between RFC and E1
Tester Range
1 V/DIV, 2 ms/DIV
Condition
Ignition switch to ON, A/C switch ON (Max Cool)
HINT:
The wavelength becomes shorter as the engine coolant temperature.