ECD SYSTEM(w/ Glow Plug Controller) TERMINALS OF ECM

A325174E04
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 the checks should be compared with the standard voltage for that pair of terminals, which is 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

B212-16 (HAF2) - A169-5 (E2)

Y - W-B

Air fuel ratio sensor heater

(for sensor 2)

Ignition switch ON

11 to 14 V

Idling

Pulse generation

(See waveform 1)

B212-18 (VNM-) - A169-4 (E1)

W*3 - W-B

V*4 - W-B

VN turbocharger motor

Idling with warm engine

Pulse generation

B212-20 (M-) - A169-4 (E1)

G*3 - W-B

L*4 - W-B

Diesel throttle duty signal

Engine racing

Pulse generation

B212-21 (EGM-) - A169-4 (E1)

B - W-B

EGR valve motor

Idling with warm engine

Pulse generation

B212-24 (IJ4+) - B212-54 (IJ4-)

L - R-L

Injector

Idling

Pulse generation

B212-25 (IJ3+) - B212-55 (IJ3-)

W - R-B

Injector

Idling

Pulse generation

B212-26 (IJ2+) - B212-56 (IJ2-)

R - W

Injector

Idling

Pulse generation

B212-27 (IJ1+) - B212-57 (IJ1-)

W - B

Injector

Idling

Pulse generation

B212-28 (V20) - A169-4 (E1)

R - W-B

Oil pressure switching valve assembly

Oil pressure switching valve ON

0 to 1.5 V

Oil pressure switching valve OFF

11 to 14 V

B212-30 (PCV) - A169-4 (E1)

L - W-B

Supply pump (suction control valve)

Idling

Pulse generation

(See waveform 2)

B212-46 (HAF1) - A169-5 (E2)

L - W-B

Air fuel ratio sensor heater

(for sensor 1)

Ignition switch ON

11 to 14 V

Idling

Pulse generation

(See waveform 1)

B212-48 (VNM+) - A169-4 (E1)

R*3 - W-B

P*4 - W-B

VN turbocharger motor

Idling with warm engine

Pulse generation

B212-50 (M+) - A169-4 (E1)

Y*3 - W-B

G*4 - W-B

Diesel throttle duty signal

Engine racing

Pulse generation

B212-51(EGM+) - A169-4 (E1)

W - W-B

EGR valve motor

Idling with warm engine

Pulse generation

B212-58 (ECBV) - A169-4 (E1)

G - W-B

VSV for EGR cooler bypass valve

Ignition switch ON with cold engine

0 to 1.5 V

Idling with warm engine

11 to 14 V

B212-60 (PRV) - A169-4 (E1)

W - W-B

Pressure control valve signal

Drive vehicle at 50 km/h (31 mph) in third gear, and then decelerate by releasing accelerator pedal

Pulse generation

(See waveform 3)

B212-63 (VPIM) - B212-110 (EPIM)

R - Y

Power source of diesel turbo pressure sensor

Ignition switch ON

4.75 to 5.25 V

B212-64 (VCEG) - B212-111 (EEGL)

W - B

Power source of EGR valve position sensor

Ignition switch ON

4.5 to 5.5 V

B212-65 (VCTA) - B212-112 (ETA)

V - P

Power source of diesel throttle position sensor

Ignition switch ON

4.5 to 5.5 V

B212-67 (VNVC) - B212-114 (VNE2)

W - B

Power source of nozzle vane position sensor

Ignition switch ON

4.5 to 5.5 V

B212-68 (VCG) - A169-4 (E1)

R - W-B

Power source of camshaft position sensor

Ignition switch ON

4.5 to 5.5 V

B212-70 (VCS) - B212-117 (E2S)

R - G

Power source of fuel pressure sensor

Ignition switch ON

4.5 to 5.5 V

B212-71 (VCPX) - B212-118 (EPEX)

R - G

Power source of differential pressure sensor

Ignition switch ON

4.75 to 5.25 V

B212-76 (RE2) - A169-4 (E1)

P - W-B

Air fuel ratio sensor signal

(for sensor 2)

Ignition switch ON

2.1 to 3.5 V

B212-77 (AF2-) - A169-4 (E1)

L - W-B

Air fuel ratio sensor signal

(for sensor 2)

Ignition switch ON

2.35 to 2.65 V

B212-78 (PIM) - B212-110 (EPIM)

G - Y

Diesel turbo pressure sensor

Ignition switch ON(same as atmosphere pressure)

0.8 to 1.4 V

B212-79 (EGLS) - B212-111 (EEGL)

G - B

EGR valve position sensor

EGR valve fully closed

0.8 to 1.6 V

EGR valve fully opened

3.6 to 4.4 V

B212-80 (VTA1) - B212-112 (ETA)

LG - P

Diesel throttle position sensor

Throttle valve fully opened

3.2 to 4.9 V

Throttle valve fully closed

0.5 to 1.1 V

B212-82 (VTAI) - B212-114 (VNE2)

R - B

Nozzle vane position sensor

VN turbocharger fully closed

0.9 to 2.1 V

VN turbocharger fully opened

3.0 to 4.1 V

B212-83 (G+) - B212-115 (G-)

L - G

Camshaft position sensor

Idling

Pulse generation

(See waveform 4)

B212-85 (PC) - B212-117 (E2S)

W - G

Fuel pressure sensor (common rail pressure sensor)

Idling

1.0 to 1.3 V

B212-86 (PEX) - B212-118 (EPEX)

P - G

Differential pressure sensor

Ignition switch ON

0.5 to 1.0 V

B212-90 (SNE) - Body ground

BR - -

Shielded earth (ground) circuit of crankshaft position sensor

Always

Below 1 Ω

B212-92 (THCO) - B212-93 (ETCO)

B - V

Exhaust gas temperature sensor B1S2

Idling with warm engine

2.9 to 3.3 V

B212-96 (THA) - B212-100 (EVG)

LG*3 - BR

L*4 - BR

Intake air temperature sensor

Idling, intake air temperature 0 to 80 °C (32 to 176°F)

0.5 to 3.4 V

B212-97 (VG) - B212-100 (EVG)

P*3 - BR

LG*4 - BR

Mass air flow meter

Idling

Pulse generation

(See waveform 5)

B212-98 (OILH) - A169-4 (E1)

R - W-B

Engine oil level upper switch

Oil level upper switch off

4.5 to 5.0 V

Oil level upper switch ON

0 to 1.5 V

B212-99 (VCVG) - B212-100 (EVG)

L*3 - BR

P*4 - BR

Power source of mass air flow meter (for VG)

Ignition switch ON

4.5 to 5.5 V

B212-101 (THF) - B212-133 (ETHF)

GR - BR

Fuel temperature sensor

Idling

0.5 to 2.0 V

B212-103 (THW) - B212-135 (ETHW)

B - BR

Engine coolant temperature sensor

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

0.2 to 1.0 V

B212-109 (AF2+) - A169-4 (E1)

R - W-B

Air fuel ratio sensor signal

(for sensor 2)

Ignition switch ON

1.5 to 4.9 V

B212-121 (NE+) - B212-122 (NE-)

R - G

Crankshaft position sensor

Idling

Pulse generation

(See waveform 6)

B212-123 (THIA) - B212-91 (ETHI)

V - GR

Intake air temperature sensor (intake manifold)

Idling, intake air temperature 0 to 80 °C (32 to 176°F)

0.5 to 2.0 V

B212-124 (THCI) - B212-125 (ETCI)

LG - L

Exhaust gas temperature sensor B1S1

Idling with warm engine

2.9 to 3.3 V

B212-127 (AF1+) - A169-4 (E1)

B - W-B

Air fuel ratio sensor signal

(for sensor 1)

Ignition switch ON

1.5 to 4.9 V

B212-128 (RE1) - A169-4 (E1)

P - W-B

Air fuel ratio sensor signal

(for sensor 1)

Ignition switch ON

2.1 to 3.5 V

B212-129 (AF1-) - A169-4 (E1)

L - W-B

Air fuel ratio sensor signal

(for sensor 1)

Ignition switch ON

2.35 to 2.65 V

B212-131 (POP) - B212-130 (EPOP)

G - W

Oil pressure sender gauge assembly

Engine running

0.38 to 4.66 V

B212-132 (VPOP) - B212-130 (EPOP)

B - W

Power source of oil pressure sender gauge assembly

Ignition switch ON

4.75 to 5.25 V

A169-1 (+B3) - A169-4 (E1)

B*3 - W-B

GR*4 - W-B

Power source of ECM

Ignition switch ON

11 to 14 V

A169-2 (+B) - A169-4 (E1)

B - W-B

Power source of ECM

Ignition switch ON

11 to 14 V

A169-4 (E1) - Body ground

W-B - -

Ground

Always

Below 1 Ω

A169-5 (E2) - Body ground

W-B - -

Ground

Always

Below 1 Ω

A169-6 (NEO) - A169-4 (E1)

L - W-B

Engine speed

Idling

Pulse generation

(See waveform 7)

A169-7 (RFC) - A169-4 (E1)

R - W-B

Cooling fan control

Ignition switch ON, A/C switch on (Max cool)

Pulse generation

(See waveform 8)

A169-9 (MREL) - A169-4 (E1)

B - W-B

EFI-MAIN relay

Ignition switch ON

11 to 14 V

20 seconds elapsed since ignition switch off

0 to 1.5 V

A169-10 (W) - A169-4 (E1)

LG - W-B

MIL

MIL illuminated

0 to 3 V

MIL not illuminated

11 to 14 V

A169-14 (+B2) - A169-4 (E1)

B*3 - W-B

R*4 - W-B

Power source of ECM

Ignition switch ON

11 to 14 V

A169-15 (BATT) - A169-4 (E1)

W - W-B

Battery (for measuring the battery voltage and for the ECM memory)

Always

11 to 14 V

A169-17 (E3) - Body ground

W-B - -

Ground

Always

Below 1 Ω

A169-18 (E4) - Body ground

W-B - -

Ground

Always

Below 1 Ω

A169-19 (TACH) - A169-4 (E1)

GR - W-B

Engine speed

Idling

Pulse generation

A169-20 (GREL) - A169-4 (E1)

L - W-B

Glow plug relay assembly

Ignition switch ON

11 to 14 V

A169-24 (GLDO) - A169-4 (E1)

R - W-B

Glow plug controller

Glow plug on

Pulse generation

A169-25 (CANL) - A169-4 (E1)

W - W-B

CAN communication line

Ignition switch ON

Pulse generation

(See waveform 9)

A169-26 (CANH) - A169-4 (E1)

B - W-B

CAN communication line

Ignition switch ON

Pulse generation

(See waveform 10)

A169-27 (VCPA) - A169-22 (EPA)

B*1*3 - Y*1*3

B*4 - Y*4

P*2*3 - V*2*3

Power source of accelerator pedal position sensor (for VPA)

Ignition switch ON

4.5 to 5.5 V

A169-28 (VCP2) - A169-23 (EPA2)

L - P*1

L - G*2*3

L - Y*2*4

Power source of accelerator pedal position sensor (for VPA2)

Ignition switch ON

4.5 to 5.5 V

A169-30 (CANP) - A169-4 (E1)

B - W-B

CAN communication line

Ignition switch ON

Pulse generation

(See waveform 10)

A169-31 (CANN) - A169-4 (E1)

SB - W-B

CAN communication line

Ignition switch ON

Pulse generation

(See waveform 9)

A169-32 (MHSW)*5 - A169-4 (E1)

R - W-B

Power heater switch signal

Power heater switch ON

11 to 14 V

A169-33 (ELS) - A169-4 (E1)

V - W-B

Tail Light signal

Tail light ON

11 to 14 V

Tail light off

0 to 1.5 V

A169-35 (GLDI) - A169-4 (E1)

V - W-B

Glow plug controller

Glow plug on

Pulse generation

A169-36 (D) - A169-4 (E1)

GR - W-B

No. 2 clutch pedal switch assembly

Ignition switch ON, clutch pedal released

11 to 14 V

Ignition switch ON, clutch pedal depressed

0 to 1.5 V

A169-37 (IGSW) - A169-4 (E1)

B - W-B

Ignition switch

Ignition switch ON

11 to 14 V

A169-38 (ST1-) - A169-4 (E1)

R - W-B

Stop light switch

(opposite to STP)

Brake pedal depressed

0 to 1.5 V

Brake pedal released

7.5 to 14 V

A169-42 (VPA) - A169-22 (EPA)

W - Y*1*3

W - Y*4

W - V*2*3

Accelerator pedal position sensor (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

A169-43 (VPA2) - A169-23 (EPA2)

R - P*1

R - G*2*3

R - Y*2*4

Accelerator pedal position sensor (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

A169-48 (STP) - A169-4 (E1)

L*3 - W-B

LG*4 - W-B

Stop light switch

Brake pedal depressed

7.5 to 14 V

Brake pedal released

0 to 1.5 V

A169-50 (TC) - A169-4 (E1)

P - W-B

Terminal TC of DLC3

Ignition switch ON

11 to 14 V

A169-51 (SPD) - A169-4 (E1)

V - W-B

Speed signal from combination meter

Ignition switch ON, driving wheel rotating slowly

Pulse generation

(See waveform 11)

A169-52 (ELS2) - A169-4 (E1)

L - W-B

Electric load

Defogger switch ON

7.5 to 14 V

Defogger switch off

0 to 1.5 V

A169-53 (STA) - A169-4 (E1)

LG - W-B

Starter signal

Cranking

6.0 V or higher

A169-54 (R) - A169-4 (E1)

R - W-B

Back-up light switch signal

Back-up light switch ON

11 to 14 V

  • *1: for LHD

    *2: for RHD

    *3: for Hatchback, Wagon

    *4: for Sedan

    *5: w/ Combustion type power heater

  1. Waveform 1

    A208563E05
    Table 1. Air Fuel Ratio Sensor Heater Signal

    ECM Terminal Name

    HAF1 and E2

    HAF2 and E2

    Tester Range

    5 V/DIV, 2 ms/DIV

    Condition

    Idling
    Tip:

    The wavelength varies depending on the engine operating conditions.

  2. Waveform 2

    A294242E01
    Table 2. Suction Control Valve Signal

    ECM Terminal Name

    PCV and E1

    Tester Range

    10 V/DIV, 5 ms/DIV

    Condition

    Idling
    Tip:

    The waveform varies depending on the suction control valve operation.

  3. Waveform 3

    A115980E08
    Table 3. Pressure Control Valve Signal

    ECM Terminal Name

    PRV and E1

    Tester Range

    10 V/DIV, 0.5 ms/DIV

    Condition

    Drive vehicle at 50 km/h (31 mph) in third gear, and then decelerate by releasing accelerator pedal
    Tip:

    The waveform varies depending on the pressure control valve operation.

  4. Waveform 4

    A286973E03
    Table 4. Camshaft Position Sensor Signal

    ECM Terminal Name

    G+ and G-

    Tester Range

    5 V/DIV, 20 ms/DIV

    Condition

    Idling
    Tip:

    The waveform varies depending on the engine speed.

  5. WAVEFORM 5

    Table 5. Mass Air Flow Meter Signal

    ECM Terminal Name

    Between VG and EVG

    Tester Range

    1 V/DIV., 100 μs./DIV.

    Condition

    Idling
    A337204E01

  6. Waveform 6

    A294243E01
    Table 6. Crankshaft Position Sensor Signal

    ECM Terminal Name

    NE+ and NE-

    Tester Range

    5 V/DIV, 10 ms/DIV

    Condition

    Idling
    Tip:

    The waveform varies depending on the engine speed.

  7. Waveform 7

    A294256E01
    Table 7. Engine Speed Signal

    ECM Terminal Name

    NEO and E1

    Tester Range

    5 V/DIV, 1 ms/DIV

    Condition

    Idling
    Tip:

    The waveform varies depending on the crankshaft position sensor signal.

  8. Waveform 8

    A247290E04
    Table 8. Cooling Fan Control Signal

    ECM Terminal Name

    RFC and E1

    Tester Range

    1 V/DIV, 4 ms/DIV

    Condition

    Ignition switch ON, A/C switch on (Max cool)
    Tip:

    The duty ratio varies depending on the engine coolant temperature.

  9. Waveform 9

    Table 9. CAN Communication Signal (Reference)

    ECM Terminal Name

    CANL and E1

    CANN and E1

    Tester Range

    1 V/DIV, 10 μs/DIV

    Condition

    Ignition switch ON
    Tip:

    The wavelength becomes shorter depending on the CAN communication signal.

    A129237E06

  10. Waveform 10

    A129236E07
    Table 10. CAN Communication Signal (Reference)

    ECM Terminal Name

    CANH and E1

    CANP and E1

    Tester Range

    1 V/DIV, 10 μs/DIV

    Condition

    Ignition switch ON
    Tip:

    The wavelength becomes shorter depending on the CAN communication signal.

  11. Waveform 11

    A286063E02
    Table 11. Vehicle Speed Signal

    ECM Terminal Name

    SPD and E1

    Tester Range

    1 V/DIV, 10 ms/DIV

    Condition

    Ignition switch ON, driving wheel rotating slowly
    Tip:

    The wavelength becomes shorter as the vehicle speed increases.