Terminals of ECM

SFI system 2ZR-FXE
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 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
A60-20 (BATT) - D27-104 (E1)	R - BR	Auxiliary battery (for measuring auxiliary battery voltage and for ECM memory)	Always	11 to 14 V
A60-2 (+B) - D27-104 (E1)	B - BR	Power source of ECM	Power switch on (IG)	11 to 14 V
A60-1 (+B2) - D27-104 (E1)	B - BR	Power source of ECM	Power switch on (IG)	11 to 14 V
A60-3 (+BM) - D27-104 (E1)	GR - BR	Power source of throttle actuator	Always	11 to 14 V
D27-108 (IGT1) - D27-104 (E1)	GR - BR	Ignition coil assembly (ignition signal)	Idling	Pulse generation (see waveform 1)
D27-107 (IGT2) - D27-104 (E1)	W - BR
D27-106 (IGT3) - D27-104 (E1)	G - BR
D27-105 (IGT4) - D27-104 (E1)	Y - BR
D27-23 (IGF1) - D27-104 (E1)	L - BR	Ignition coil assembly (ignition confirmation signal)	Power switch on (IG)	4.5 to 5.5 V
			Idling	Pulse generation (see waveform 1)
D27-74 (NE+) - D27-120 (NE-)	B - W	Crankshaft position sensor	Idling with warm engine	Pulse generation (see waveform 2)
D27-76 (G2+) - D27-122 (G2-)	B - W	Camshaft position sensor	Idling with warm engine	Pulse generation (see waveform 2)
D27-85 (#10) - D27-109 (E01)	Y - BR	Fuel injector assembly	Power switch on (IG)	11 to 14 V
D27-84 (#20) - D27-109 (E01)	B - BR
D27-83 (#30) - D27-109 (E01)	L - BR
D27-82 (#40) - D27-109 (E01)	R - BR
D27-85 (#10) - D27-109 (E01)	Y - BR	Fuel injector assembly	Idling	Pulse generation (see waveform 3)
D27-84 (#20) - D27-109 (E01)	B - BR
D27-83 (#30) - D27-109 (E01)	L - BR
D27-82 (#40) - D27-109 (E01)	R - BR
D27-18 (HA1A) - D27-46 (E04)	Y - BR	Air fuel ratio sensor (sensor 1) heater	Power switch on (IG)	11 to 14 V
			Idling with warm engine	Pulse generation (see waveform 4)
D27-103 (A1A+) - D27-104 (E1)	Y - BR	Air fuel ratio sensor (sensor 1)	Idling	3.3 V*1
D27-126 (A1A-) - D27-104 (E1)	BR - BR	Air fuel ratio sensor (sensor 1)	Idling	3.0 V*1
D27-41 (HT1B) - D27-86 (E03)	BR - BR	Heated oxygen sensor (sensor 2) heater	Power switch on (IG)	11 to 14 V
			Idling	Below 3.0 V
D27-125 (OX1B) - D27-102 (O1B-)	L - P	Heated oxygen sensor (sensor 2)	Engine speed maintained at 2500 rpm for 2 minutes after warming up engine	Pulse generation (see waveform 5)
D27-87 (KNK1) - D27-110 (EKNK)	B - W	Knock control sensor	Engine speed maintained at 2500 rpm after warming up engine	Pulse generation (see waveform 6)
D27-64 (THW) - D27-65 (ETHW)	P - BR	Engine coolant temperature sensor	Idling, Engine coolant temperature 80°C (176°F)	0.2 to 1.0 V
D27-116 (THA) - D27-93 (ETHA)	P - BR	Intake air temperature sensor (built into mass air flow meter sub-assembly)	Idling, Intake air temperature 20°C (68°F)	0.5 to 3.4 V
D27-94 (VG) - D27-117 (E2G)	B - W	Mass air flow meter sub-assembly	Idling, shift lever in N, A/C switch OFF	0.5 to 3.0 V
A60-36 (W) - D27-104 (E1)	LG - BR	MIL	Power switch on (IG) (MIL goes on)	Below 3.0 V
			Idling	11 to 14 V
D27-90 (VTA1) - D27-111 (ETA)	Y - G	Throttle position sensor (for engine control)	Accelerator pedal released (Throttle valve fully closed)	0.5 to 1.1 V
D27-89 (VTA2) - D27-111 (ETA)	B - G	Throttle position sensor (for sensor malfunction detection)	Accelerator pedal released (Throttle valve fully closed)	2.1 to 3.1 V
D27-88 (VCTA) - D27-111 (ETA)	R - G	Power source of throttle position sensor (specific voltage)	Power switch on (IG)	4.5 to 5.5 V
D27-21 (M+) - D27-19 (ME01)	L - BR	Throttle actuator	Idling with warm engine	Pulse generation (see waveform 7)
D27-20 (M-) - D27-19 (ME01)	P - BR	Throttle actuator	Idling with warm engine	Pulse generation (see waveform 8)
D27-28 (PRG) - D27-104 (E1)	V - BR	Purge VSV	Power switch on (IG)	11 to 14 V
			Idling, under purge control	Pulse generation (see waveform 9)
A60-8 (FC) - D27-104 (E1)	R - BR	Fuel pump control	Power switch on (IG)	11 to 14 V
			Idling	Below 1.5 V
A60-7 (TC) - D27-104 (E1)	P - BR	Terminal TC of DLC3	Power switch on (IG)	11 to 14 V
A60-26 (TACH) - D27-104 (E1)	B - BR	Engine speed	Idling	Pulse generation (see waveform 10)
D27-36 (OC1+) - D27-59 (OC1-)	Y - G	Camshaft timing oil control valve assembly	Idling	Pulse generation (see waveform 11)
A60-13 (CANH) - D27-104 (E1)	P - BR	CAN communication line	Engine stopped and power switch on (IG)	Pulse generation (see waveform 12)
A60-5 (CANL) - D27-104 (E1)	V - BR	CAN communication line	Engine stopped and power switch on (IG)	Pulse generation (see waveform 13)
A60-12 (CANP) - D27-104 (E1)	B - BR	CAN communication line	Engine stopped and power switch on (IG)	Pulse generation (see waveform 12)
A60-4 (CANN) - D27-104 (E1)	W - BR	CAN communication line	Engine stopped and power switch on (IG)	Pulse generation (see waveform 13)
A60-28 (IGSW) - D27-104 (E1)	W - BR	Power switch	Power switch on (IG)	11 to 14 V
A60-6 (MREL) - D27-104 (E1)	G - BR	EFI MAIN relay	Power switch on (IG)	11 to 14 V
D27-99 (VCV1) - D27-104 (E1)	R - BR	Power source of camshaft position sensor	Power switch on (IG)	4.5 to 5.5 V
A60-10 (WPO) - D27-104 (E1)	L - BR	Engine water pump assembly	Idling with warm engine	Pulse generation (see waveform 14)
A60-11 (WPI) - D27-104 (E1)	G - BR	Engine water pump assembly	Idling with warm engine	Pulse generation (see waveform 15)
D27-72 (VCPM) - D27-71 (EPIM)	L - Y	Manifold absolute pressure sensor	Power switch on (IG)	4.5 to 5.5 V
D27-69 (PIM) - D27-71 (EPIM)	B - Y	Manifold absolute pressure sensor	Power switch on (IG)	3.0 to 5.0 V
D27-45 (EGR1) - D27-104 (E1)	R - BR	EGR valve assembly	Repeating quick engine speed accelerations	Pulse generation (see waveform 16)
D27-44 (EGR2) - D27-104 (E1)	V - BR	EGR valve assembly	Repeating quick engine speed accelerations	Pulse generation (see waveform 16)
D27-43 (EGR3) - D27-104 (E1)	Y - BR	EGR valve assembly	Repeating quick engine speed accelerations	Pulse generation (see waveform 16)
D27-42 (EGR4) - D27-104 (E1)	LG - BR	EGR valve assembly	Repeating quick engine speed accelerations	Pulse generation (see waveform 16)
D27-48 (G2O) - D27-104 (E1)	Y - BR	Camshaft position signal	Idling	Pulse generation (see waveform 17)
A60-22 (FANH) - D27-104 (E1)	LG - BR	Cooling fan relay	Power switch on (IG)	11 to 14 V
A60-21 (FANL) - D27-104 (E1)	L - BR	Cooling fan relay	Power switch on (IG)	11 to 14 V
A60-46 (PWMS) - D27-104 (E1)	G - BR	Combination switch assembly (mode switch)	Power switch on (IG), mode switch being turned and held at SPORT position	0 to 1.5 V
A60-30 (NE01) - D27-104 (E1)	L - BR	Combination switch assembly (mode switch)	Power switch on (IG), mode switch being pushed and held at NORMAL position	0 to 1.5 V
D27-104 (E1) - Body ground	BR - Body ground	Ground	Always	Below 1 ?
D27-109 (E01) - Body ground	BR - Body ground	Ground	Always	Below 1 ?
D27-81 (E02) - Body ground	W-B - Body ground	Ground	Always	Below 1 ?
D27-86 (E03) - Body ground	BR - Body ground	Ground	Always	Below 1 ?
D27-46 (E04) - Body ground	BR - Body ground	Ground	Always	Below 1 ?
A60-32 (EC) - Body ground	W-B - Body ground	Ground	Always	Below 1 ?
D27-22 (GE01) - D27-104 (E1)	W-B - BR	Shield earth (ground) circuit of throttle actuator	Always	Below 1 V

HINT:

^*1: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

WAVEFORM 1

Igniter IGT Signal (from ECM to Igniter) and Igniter IGF Signal (from Igniter to ECM)

Terminal No. (symbol)	Tool Setting	Condition
D27-108 (IGT1) - D27-104 (E1)	2 V/DIV., 20 ms./DIV.	Idling
D27-107 (IGT2) - D27-104 (E1)	2 V/DIV., 20 ms./DIV.	Idling
D27-106 (IGT3) - D27-104 (E1)	2 V/DIV., 20 ms./DIV.	Idling
D27-105 (IGT4) - D27-104 (E1)	2 V/DIV., 20 ms./DIV.	Idling
D27-23 (IGF1) - D27-104 (E1)	2 V/DIV., 20 ms./DIV.	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

WAVEFORM 2

Crankshaft Position Sensor and Camshaft Position Sensor Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-74 (NE+) - D27-120 (NE-)	5 V/DIV., 20 ms./DIV.	Idling with warm engine
D27-76 (G2+) - D27-122 (G2-)	5 V/DIV., 20 ms./DIV.	Idling with warm engine

HINT:

The wavelength becomes shorter as the engine speed increases.

WAVEFORM 3

No. 1 (to No. 4) Fuel Injector Assembly Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-85 (#10) - D27-109 (E01)	20 V/DIV., 20 ms./DIV.	Idling
D27-84 (#20) - D27-109 (E01)	20 V/DIV., 20 ms./DIV.	Idling
D27-83 (#30) - D27-109 (E01)	20 V/DIV., 20 ms./DIV.	Idling
D27-82 (#40) - D27-109 (E01)	20 V/DIV., 20 ms./DIV.	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

WAVEFORM 4

Air Fuel Ratio Sensor (Sensor 1) Heater Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-18 (HA1A) - D27-46 (E04)	5 V/DIV., 10 ms./DIV.	Idling with warm engine

HINT:

The wavelength varies in accordance with the engine operating condition.

WAVEFORM 5

Heated Oxygen Sensor (Sensor 2) Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-125 (OX1B) - D27-102 (O1B-)	0.2 V/DIV., 200 ms./DIV.	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 6

Knock Control Sensor Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-87 (KNK1) - D27-110 (EKNK)	1 V/DIV., 1 ms./DIV.	Engine speed maintained at 2500 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 7

Throttle Actuator Positive Terminal Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-21 (M+) - D27-19 (ME01)	5 V/DIV., 1 ms./DIV.	Idling with warm engine

HINT:

The duty ratio varies depending on the throttle actuator operation.

WAVEFORM 8

Throttle Actuator Negative Terminal Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-20 (M-) - D27-19 (ME01)	5 V/DIV., 1 ms./DIV.	Idling with warm engine

HINT:

The duty ratio varies depending on the throttle actuator operation.

WAVEFORM 9

Purge VSV

Terminal No. (symbol)	Tool Setting	Condition
D27-28 (PRG) - D27-104 (E1)	10 V/DIV., 20 ms./DIV.	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 10

Engine Speed Signal

Terminal No. (Symbol)	Tool Setting	Condition
A60-26 (TACH) - D27-104 (E1)	5 V/DIV., 10 ms./DIV.	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

WAVEFORM 11

Camshaft Timing Oil Control Valve Assembly Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-36 (OC1+) - D27-59 (OC1-)	5 V/DIV., 1 ms./DIV.	Idling

WAVEFORM 12

CAN Communication Signal (Reference)

Terminal No. (symbol)	Tool Setting	Condition
A60-13 (CANH) - D27-104 (E1)	1 V/DIV., 10 ?sec./DIV.	Engine stopped and power switch on (IG)
A60-12 (CANP) - D27-104 (E1)	1 V/DIV., 10 ?sec./DIV.	Engine stopped and power switch on (IG)

HINT:

The waveform varies depending on the CAN communication signal.

WAVEFORM 13

CAN Communication Signal (Reference)

Terminal No. (symbol)	Tool Setting	Condition
A60-5 (CANL) - D27-104 (E1)	1 V/DIV., 10 ?sec./DIV.	Engine stopped and power switch on (IG)
A60-4 (CANN) - D27-104 (E1)	1 V/DIV., 10 ?sec./DIV.	Engine stopped and power switch on (IG)

HINT:

The waveform varies depending on the CAN communication signal.

WAVEFORM 14

Engine Water Pump Assembly Signal (from ECM to Engine Water Pump Assembly)

Terminal No. (symbol)	Tool Setting	Condition
A60-10 (WPO) - D27-104 (E1)	5 V/DIV., 20 ms./DIV.	Idling with warm engine

HINT:

The wavelength becomes shorter as the engine water pump assembly speed increases.

WAVEFORM 15

Engine Water Pump Assembly Signal (from Engine Water Pump Assembly to ECM)

Terminal No. (symbol)	Tool Setting	Condition
A60-11 (WPI) - D27-104 (E1)	5 V/DIV., 20 ms./DIV.	Idling with warm engine

HINT:

The wavelength becomes shorter as the engine water pump assembly speed increases.

WAVEFORM 16

EGR Valve Assembly Signal

Terminal No. (symbol)	Tool Setting	Condition
D27-45 (EGR1) - D27-104 (E1)	20 V/DIV., 50 ms./DIV.	Repeating quick engine speed accelerations
D27-44 (EGR2) - D27-104 (E1)	20 V/DIV., 50 ms./DIV.	Repeating quick engine speed accelerations
D27-43 (EGR3) - D27-104 (E1)	20 V/DIV., 50 ms./DIV.	Repeating quick engine speed accelerations
D27-42 (EGR4) - D27-104 (E1)	20 V/DIV., 50 ms./DIV.	Repeating quick engine speed accelerations

WAVEFORM 17

Camshaft Revolution Signal from ECM to Power Management Control ECU and Inverter with Converter Assembly

Terminal No. (symbol)	Tool Setting	Condition
D27-48 (G2O) - D27-104 (E1)	5 V/DIV., 20 ms./DIV.	Idling

HINT:

The wavelength becomes shorter as the engine speed increases.