SFI SYSTEM(w/ Canister Pump Module) TERMINALS OF ECM

A247842E48
Tip:

The standard 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 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

A62-1 (BATT) - B77-16 (E1)

W - BR

Battery (for measuring battery voltage and for ECM memory)

Always

11 to 14 V

B77-29 (+BM) - B77-16 (E1)

L - BR

Power source of throttle actuator

Always

11 to 14 V

A62-37 (IGSW) - B77-16 (E1)

B - BR

Ignition switch signal

Ignition switch ON

11 to 14 V

A62-2 (+B) - B77-16 (E1)

R - BR

Power source of ECM

Ignition switch ON

11 to 14 V

A62-3 (+B2) - B77-16 (E1)

P - BR

Power source of ECM

Ignition switch ON

11 to 14 V

B77-74 (OC1+) - B77-75 (OC1-)

W - B

Camshaft timing oil control valve assembly operation signal (for intake camshaft)

Idling

Pulse generation

(See waveform 1)

B77-65 (OE1+) - B77-64 (OE1-)

R - LG

Camshaft timing oil control valve assembly operation signal (for exhaust camshaft)

Idling

Pulse generation

(See waveform 2)

A62-46 (MREL) - B77-16 (E1)

P - BR

EFI MAIN relay operation signal

Ignition switch ON

11 to 14 V

B77-91 (VG) - B77-92 (E2G)

R - G

Mass air flow meter sub-assembly signal

Idling, shift lever in P, A/C switch off

0.5 to 3.0 V

B77-93 (THA) - B77-94 (ETHA)

W - BR

Intake air temperature sensor signal

Idling, intake air temperature 20°C (68°F)

0.5 to 3.4 V

B77-95 (THW) - B77-96 (ETHW)

GR - BR

Engine coolant temperature sensor signal

Idling, engine coolant temperature 80°C (176°F)

0.2 to 1.0 V

B77-125 (VCTA) - B77-126 (ETA)

Y - L

Power source of throttle position sensor (specific voltage)

Ignition switch ON

4.5 to 5.5 V

B77-127 (VTA1) - B77-126 (ETA)

G - L

Throttle position sensor signal (for engine control)

Ignition switch ON,

accelerator pedal fully released

0.5 to 1.1 V

Ignition switch ON,

accelerator pedal fully depressed

3.2 to 4.8 V

B77-128 (VTA2) - B77-126 (ETA)

L - L

Throttle position sensor signal (for sensor malfunction detection)

Ignition switch ON,

accelerator pedal fully released

2.1 to 3.1 V

Ignition switch ON,

accelerator pedal fully depressed

4.6 to 5.0 V

A62-51 (VPA) - A62-52 (EPA)

W - Y

Accelerator pedal position sensor signal (for engine control)

Ignition switch ON,

accelerator pedal fully released

0.5 to 1.1 V

Ignition switch ON,

accelerator pedal fully depressed

2.6 to 4.5 V

A62-54 (VPA2) - A62-55 (EPA2)

R - P

Accelerator pedal position sensor signal (for sensor malfunction detection)

Ignition switch ON,

accelerator pedal fully released

1.2 to 2.0 V

Ignition switch ON,

accelerator pedal fully depressed

3.4 to 4.75 V

A62-53 (VCPA) - A62-52 (EPA)

B - Y

Power source of accelerator pedal position sensor (for VPA)

Ignition switch ON

4.5 to 5.5 V

A62-56 (VCP2) - A62-55 (EPA2)

L - P

Power source of accelerator pedal position sensor (for VPA2)

Ignition switch ON

4.5 to 5.5 V

B77-23 (HA1A) - B77-53 (E04)

L - W-B

Air fuel ratio sensor heater operation signal

Idling

Pulse generation

(See waveform 3)

Ignition switch ON

11 to 14 V

B77-133 (A1A+) - B77-16 (E1)

L - BR

Air fuel ratio sensor signal

Ignition switch ON

3.3 V*1

B77-134 (A1A-) - B77-16 (E1)

Y - BR

Air fuel ratio sensor signal

Ignition switch ON

2.9 V*1

B77-24 (HT1B) - B77-53 (E04)

R - W-B

Heated oxygen sensor heater operation signal

Idling

Below 3.0 V

Ignition switch ON

11 to 14 V

B77-100 (OX1B) - B77-132 (EX1B)

W - B

Heated oxygen sensor signal

Engine speed maintained at 2500 rpm for 2 minutes after warming up engine

Pulse generation

(See waveform 4)

B77-20 (#10) - B77-50 (E01)

L - W-B

No. 1 fuel injector assembly signal

Ignition switch ON

11 to 14 V

Idling

Pulse generation

(See waveform 5)

B77-17 (#20) - B77-50 (E01)

G - W-B

No. 2 fuel injector assembly signal

Ignition switch ON

11 to 14 V

Idling

Pulse generation

(See waveform 5)

B77-18 (#30) - B77-50 (E01)

B - W-B

No. 3 fuel injector assembly signal

Ignition switch ON

11 to 14 V

Idling

Pulse generation

(See waveform 5)

B77-19 (#40) - B77-50 (E01)

W - W-B

No. 4 fuel injector assembly signal

Ignition switch ON

11 to 14 V

Idling

Pulse generation

(See waveform 5)

B77-123 (KNK1) - B77-124 (EKNK)

R - G

Knock control sensor signal

Engine speed maintained at 4000 rpm after warming up engine

Pulse generation

(See waveform 6)

B77-82 (VV1+) - B77-114 (VV1-)

B - R

Camshaft position sensor signal (for intake camshaft)

Idling

Pulse generation

(See waveform 7)

B77-81 (EV1+) - B77-112 (EV1-)

B - R

Camshaft position sensor signal (for exhaust camshaft)

Idling

Pulse generation

(See waveform 7)

B77-76 (NE+) - B77-109 (NE-)

W - B

Crankshaft position sensor signal

Idling

Pulse generation

(See waveform 8)

B77-57 (IGT1) - B77-16 (E1)

R - BR

No. 1 ignition coil assembly (ignition signal)

Idling

Pulse generation

(See waveform 9)

B77-56 (IGT2) - B77-16 (E1)

B - BR

No. 2 ignition coil assembly (ignition signal)

Idling

Pulse generation

(See waveform 9)

B77-55 (IGT3) - B77-16 (E1)

G - BR

No. 3 ignition coil assembly (ignition signal)

Idling

Pulse generation

(See waveform 9)

B77-54 (IGT4) - B77-16 (E1)

L - BR

No. 4 ignition coil assembly (ignition signal)

Idling

Pulse generation

(See waveform 9)

B77-51 (IGF1) - B77-16 (E1)

W - BR

Ignition coil assembly (ignition confirmation signal)

Ignition switch ON

4.5 to 5.5 V

Idling

Pulse generation

(See waveform 9)

B77-68 (PRG) - B77-50 (E01)

G - W-B

Purge VSV operation signal

Ignition switch ON

11 to 14 V

Idling, under purge control

Pulse generation

(See waveform 10)

A62-57 (SPD) - B77-16 (E1)

V - BR

Vehicle speed signal from combination meter assembly

Driving at 20 km/h (12 mph)

Pulse generation

(See waveform 11)

A62-22 (STA) - B77-16 (E1)

SB - BR

Starter signal

Cranking

5.5 V or higher

B77-63 (NSW) - B77-16 (E1)

W - BR

Park/neutral position switch assembly signal

Ignition switch ON, shift lever not in P or N

11 to 14 V

Ignition switch ON, shift lever in P or N

Below 3.0 V

A62-11 (STP) - B77-16 (E1)

L - BR

Stop light switch assembly signal

Brake pedal depressed

7.5 to 14 V

Brake pedal released

Below 1.5 V

A62-24 (ST1-) - B77-16 (E1)

GR - BR

Stop light switch assembly signal

(opposite to voltage at STP terminal)

Ignition switch ON,

brake pedal depressed

Below 1.5 V

Ignition switch ON,

brake pedal released

7.5 to 14 V

B77-60 (M+) - B77-58 (ME01)

V - W-B

Throttle actuator operation signal (positive terminal)

Idling with warm engine

Pulse generation

(See waveform 12)

B77-30 (M-) - B77-58 (ME01)

P - W-B

Throttle actuator operation signal (negative terminal)

Idling with warm engine

Pulse generation

(See waveform 13)

A62-21 (FC) - B77-50 (E01) [for 4WD/AWD]

W - W-B

Fuel pump control

Ignition switch ON

11 to 14 V

A62-21 (FPC) - B77-16 (E1) [for 2WD]

W - BR

Fuel pump control

Engine stopped, ignition switch ON

Below 1.5 V

A62-30 (W) - B77-16 (E1)

R - BR

Malfunction Indicator Lamp (MIL) operation signal

Ignition switch ON

Below 3.0 V

Idling

11 to 14 V

A62-23 (TC) - B77-16 (E1)

G - BR

Terminal TC of DLC3

Ignition switch ON

11 to 14 V

A62-31 (TACH) - B77-16 (E1)

GR - BR

Engine speed

Idling

Pulse generation

(See waveform 14)

A62-7 (VPMP) - B77-50 (E01)

W - W-B

Vent valve (built into canister pump module)

Ignition switch ON

11 to 14 V

A62-19 (MPMP) - B77-50 (E01)

B - 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

B77-113 (VCV1) - B77-16 (E1)

W - BR

Power source of camshaft position sensor (for intake camshaft) (specific voltage)

Ignition switch ON

4.5 to 5.5 V

B77-111 (VCE1) - B77-16 (E1)

G - BR

Power source of camshaft position sensor (for exhaust camshaft) (specific voltage)

Ignition switch ON

4.5 to 5.5 V

A62-34 (VCPP) - A62-48 (EPPM)

Y - BR

Power source of canister pressure sensor (specific voltage)

Ignition switch ON

4.5 to 5.5 V

A62-49 (PPMP) - A62-48 (EPPM)

V - BR

Canister pressure sensor (built into canister pump module)

Ignition switch ON

3.0 to 3.6 V

B77-73 (ALT) - B77-16 (E1) [for 4WD/AWD]

B - BR

Generator assembly

Ignition switch ON

11 to 14 V

A62-12 (CANP) - B77-16 (E1) [for 2WD]

B - BR

CAN communication line

Ignition switch ON

Pulse generation

(See waveform 15)

A62-25 (CANN) - B77-16 (E1) [for 2WD]

W - BR

CAN communication line

Ignition switch ON

Pulse generation

(See waveform 16)

A62-13 (CANH) - B77-16 (E1)

Y - BR

CAN communication line

Ignition switch ON

Pulse generation

(See waveform 15)

A62-26 (CANL) - B77-16 (E1)

W - BR

CAN communication line

Ignition switch ON

Pulse generation

(See waveform 16)

B77-69 (ACIS) - B77-50 (E01)

R - W-B

Vacuum switching valve for ACIS (Acoustic Control Induction System) operation signal

Ignition switch ON

11 to 14 V

B77-22 (IA1+) - B77-50 (E01)

W - W-B

Intake air control valve actuator for tumble control valve

Idling with cold engine

Pulse generation

(See waveform 17)

B77-21 (IA1-) - B77-50 (E01)

G - W-B

Intake air control valve actuator for tumble control valve

Idling with cold engine

Pulse generation

(See waveform 18)

B77-131 (IAC1) - B77-129 (EIA1)

B - L

Tumble control valve position sensor

Ignition switch off to ON

3.0 to 4.0 V

B77-130 (VCIA) - B77-16 (E1)

B - BR

Power source of tumble control valve position sensor (specific voltage)

Ignition switch ON

4.5 to 5.5 V

A62-45 (NEO)*2 - B77-16 (E1)

P - BR

Crankshaft revolution signal sent to certification ECU (smart key ECU assembly)

Idling with warm engine

Pulse generation

(See waveform 19)

A62-5 (FANL) - B77-50 (E01)

R - W-B

Cooling fan motor operation signal (low)

Ignition switch ON

11 to 14 V

Idling with A/C on, or high engine coolant temperature

Below 1.5 V

A62-6 (FANH) - B77-50 (E01)

W - W-B

Cooling fan motor operation signal (high)

Ignition switch ON

11 to 14 V

Idling with high engine coolant temperature

Below 1.5 V

A62-4 (ELS1) - B77-16 (E1)

P - BR

Electric load

Rear window defogger switch on

7.5 to 14 V

Rear window defogger switch off

Below 1.5 V

A62-14 (EC) - Body ground

W-B - -

Earth (ground) circuit of ECM

Always

Below 1 Ω

B77-16 (E1) - Body ground

BR - -

Earth (ground) circuit of ECM

Always

Below 1 Ω

B77-50 (E01) - Body ground

W-B - -

Earth (ground) circuit of ECM

Always

Below 1 Ω

B77-49 (E02) - Body ground

W-B - -

Earth (ground) circuit of ECM

Always

Below 1 Ω

B77-53 (E04) - Body ground

W-B - -

Earth (ground) circuit of ECM

Always

Below 1 Ω

B77-58 (ME01) - Body ground

W-B - -

Earth (ground) circuit of ECM

Always

Below 1 Ω

B77-59 (GE01) - Body ground

BR - -

Shielded earth (ground) circuit of throttle actuator

Always

Below 1 Ω

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

  • *2: w/ Entry and Start System

  1. WAVEFORM 1

    A292381E01
    Table 1. Camshaft Timing Oil Control Valve Assembly (for Intake Camshaft) Operation Signal

    ECM Terminal Name

    Between OC1+ and OC1-

    Tester Range

    5 V/DIV., 1 ms./DIV.

    Condition

    Idling

  2. WAVEFORM 2

    A292381E01
    Table 2. Camshaft Timing Oil Control Valve Assembly (for Exhaust Camshaft) Operation Signal

    ECM Terminal Name

    Between OE1+ and OE1-

    Tester Range

    5 V/DIV., 1 ms./DIV.

    Condition

    Idling

  3. WAVEFORM 3

    A205412E06
    Table 3. Air Fuel Ratio Sensor (Sensor 1) Heater Operation Signal

    ECM Terminal Name

    Between HA1A and E04

    Tester Range

    5 V/DIV., 10 ms./DIV.

    Condition

    Idling
    Tip:

    The wavelength varies in accordance with the engine operating condition.

  4. WAVEFORM 4

    A292382E01
    Table 4. Heated Oxygen Sensor (Sensor 2) 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 engine
    Tip:

    In the Data List, the item O2S B1S2 shows the values input to the ECM from the heated oxygen sensor.

  5. WAVEFORM 5

    A292383E01
    Table 5. No. 1 (to No. 4) Fuel Injector Assembly Signal

    ECM Terminal Name

    Between #10 (to #40) and E01

    Tester Range

    20 V/DIV., 20 ms./DIV.

    Condition

    Idling
    Tip:

    The wavelength becomes shorter as the engine speed increases.

  6. WAVEFORM 6

    A283572E06
    Table 6. Knock Control 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
    Tip:

    • The wavelength becomes shorter as the engine speed increases.

    • The waveforms and amplitudes displayed differ slightly depending on the vehicle condition.

  7. WAVEFORM 7

    A255508E16
    Table 7. Camshaft Position Sensor Signal (for Intake and Exhaust Camshaft)

    ECM Terminal Name

    CH1: Between VV1+ and VV1-

    CH2: Between EV1+ and EV1-

    Tester Range

    5 V/DIV., 20 ms./DIV.

    Condition

    Idling
    Tip:

    The wavelength becomes shorter as the engine speed increases.

  8. WAVEFORM 8

    A254145E02
    Table 8. Crankshaft Position Sensor Signal

    ECM Terminal Name

    Between NE+ and NE-

    Tester Range

    5 V/DIV., 20 ms./DIV.

    Condition

    Idling
    Tip:

    The wavelength becomes shorter as the engine speed increases.

  9. WAVEFORM 9

    A299080E03
    Table 9. Ignition Coil Assembly Signal (IGT and IGF Signal)

    ECM Terminal Name

    IGT: Between IGT (1 to 4) and E1

    IGF: Between IGF1 and E1

    Tester Range

    2 V/DIV., 20 ms./DIV.

    Condition

    Idling
    Tip:

    The wavelength becomes shorter as the engine speed increases.

  10. WAVEFORM 10

    A218020E09
    Table 10. Purge VSV Signal

    ECM Terminal Name

    Between PRG and E01

    Tester Range

    10 V/DIV., 20 ms./DIV.

    Condition

    Idling, under purge control
    Tip:

    If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.

  11. WAVEFORM 11

    A292384E01
    Table 11. 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)
    Tip:

    The wavelength becomes shorter as the vehicle speed increases.

  12. WAVEFORM 12

    A208000E03
    Table 12. 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
    Tip:

    The duty ratio varies depending on the throttle actuator operation.

  13. WAVEFORM 13

    A245848E01
    Table 13. 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
    Tip:

    The duty ratio varies depending on the throttle actuator operation.

  14. WAVEFORM 14

    A292385E01
    Table 14. Engine Speed Signal

    ECM Terminal Name

    Between TACH and E1

    Tester Range

    5 V/DIV., 10 ms./DIV.

    Condition

    Idling
    Tip:

    The wavelength becomes shorter as the engine speed increases.

  15. WAVEFORM 15

    A292386E01
    Table 15. CAN Communication Signal (Reference)

    ECM Terminal Name

    Between CANH and E1

    Between CANP and E1

    Tester Range

    1 V/DIV., 10 μs./DIV.

    Condition

    Ignition switch ON
    Tip:

    The waveform varies depending on the CAN communication signal.

  16. WAVEFORM 16

    A292387E02
    Table 16. CAN Communication Signal (Reference)

    ECM Terminal Name

    Between CANL and E1

    Between CANN and E1

    Tester Range

    1 V/DIV., 10 μs./DIV.

    Condition

    Ignition switch ON
    Tip:

    The waveform varies depending on the CAN communication signal.

  17. WAVEFORM 17

    A292388E01
    Table 17. Positive Terminal of Intake Air Control Valve Actuator (for Tumble Control Valve) Signal

    ECM Terminal Name

    Between IA1+ and E01

    Tester Range

    5 V/DIV., 1 ms./DIV.

    Condition

    Idling with cold engine

  18. WAVEFORM 18

    A292389E01
    Table 18. Negative Terminal of Intake Air Control Valve Actuator (for Tumble Control Valve) Signal

    ECM Terminal Name

    Between IA1- and E01

    Tester Range

    5 V/DIV., 1 ms./DIV.

    Condition

    Idling with cold engine

  19. WAVEFORM 19

    A210050E04
    Table 19. Crankshaft Revolution Signal (for Certification ECU (Smart Key ECU Assembly))

    ECM Terminal Name

    Between NEO and E1

    Tester Range

    5 V/DIV., 2 ms./DIV.

    Condition

    Idling with warm engine
    Tip:

    The wavelength becomes shorter as the engine speed increases.