СИСТЕМА ECD КОНТАКТЫ ECM

A01XJ7VE02

Tech Tips

Each ECM terminal's standard voltage is shown in the table below.

In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition". Use the illustration above as a reference for the ECM terminals.

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
G183-2 (BATT) - C161-5 (E1) L - BR Battery (for measuring the battery voltage and for ECM memory) Always 11 to 14 V
G183-8 (SREL) - C161-5 (E1) R - W-B GLOW relay Cranking 11 to 14 V
G183-8 (SREL) - C161-7 (E01) R - W-B GLOW relay

Idling

(engine started and 600 sec. have passed)

 0 to 1.5 V
G183-10 (MREL) - C161-5 (E1) V - BR MAIN relay Ignition switch ON 11 to 14 V
G183-10 (MREL) - C161-5 (E1) V - BR MAIN relay

Ignition switch off

(2 sec. after ignition switch off)

 0 to 1.5 V
G183-17 (TC) - C161-5 (E1) V - BR Terminal TC of DLC3 Ignition switch ON 11 to 14 V
G182-13 (W) - C161-5 (E1) V - BR MIL MIL illuminated 0 to 3 V
G182-13 (W) - C161-5 (E1) V - BR MIL MIL not illuminated 11 to 14 V
G183-12 (THWO) - C161-5 (E1) L - BR Combination meter assembly Ignition switch ON

Pulse generation

(See waveform 1)
G182-25 (SP1) - C161-5 (E1) R - BR Speed signal from combination meter Ignition switch ON, slowly rotate wheel

Pulse generation

(See waveform 2)
G182-6 (STA) - C161-5 (E1) W - BR Starter signal Cranking 6 V or more
G183-1 (+B) - C161-5 (E1) W - BR Power source of ECM Ignition switch ON 11 to 14 V
G183-11 (IGSW) - C161-5 (E1) W - BR Ignition switch Ignition switch ON 11 to 14 V
G182-9 (STP) - C161-5 (E1) V - BR Stop light switch Brake pedal depressed 11 to 14 V
G182-9 (STP) - C161-5 (E1) V - BR Stop light switch Brake pedal released Below 1.5 V
G182-12 (GIND) - C161-5 (E1) R - BR Glow indicator light Glow indicator light lights up 0 to 3 V
G182-12 (GIND) - C161-5 (E1) R - BR Glow indicator light Glow indicator light does not light up 11 to 14 V
G182-34(AC1) - C161-5 (E1) LG - BR A/C amplifier

A/C switch on

(magnetic clutch on)

 Below 1.5 V
G182-34 (AC1) - C161-5 (E1) LG - BR A/C amplifier A/C switch off 7.5 to 14 V
G183-9 (ACT) - C161-5 (E1) R - BR A/C amplifier Ignition switch ON 11 to 14 V
G182-34 (ACT) - C161-5 (E1) R - BR A/C amplifier A/C cut performed (driving below 30 km/h (18.6 mph), accelerator pedal fully depressed for 5 sec.) 0 to 3 V
G183-20 (VPA) - G183-27 (EPA) L - P Accelerator pedal position sensor (for engine control) Ignition switch ON, accelerator pedal released 0.6 to 1.0 V
Ignition switch ON, accelerator pedal depressed 3.0 to 4.6 V
G183-28 (VPA2) - G183-29 (EPA2) GR - BR Accelerator pedal position sensor (for sensor malfunction detection) Ignition switch ON, accelerator pedal released 1.4 to 1.8 V
Ignition switch ON, accelerator pedal depressed 3.7 to 5.0 V
G183-26 (VCPA) - G183-27 (EPA) LG - P Power source of accelerator pedal position sensor (for VPA) Ignition switch ON 4.5 to 5.0 V
G183-23 (VCP2) - G183-29 (EPA2) R - BR Power source of accelerator pedal position sensor (for VPA2) Ignition switch ON 4.5 to 5.0 V
G182-7 (TACH) - C161-5 (E1) P - BR Engine speed sensor Idling

Pulse generation

(See waveform 3)
G182-10 (ST1-) - C161-5 (E1) B - BR Stop light switch Brake pedal depressed 0 to 1.5 V
Brake pedal released 7.5 to 14 V
C162-33 (PIM) - C162-32 (EPIM) L-B - B Manifold absolute pressure sensor 60 kPa (450 mmHg, 17.7 in.Hg) vacuum applied 0.2 to 0.8 V
207 kPa (1550 mmHg, 61.0 in.Hg) vacuum applied 4.2 to 4.8 V
C162-22 (THA) - C162-30 (ETHA) B - BR Intake air temperature sensor Idling, air intake temp. 0°C (32°F) to 80°C (176°F) 0.5 to 3.4 V
C162-21 (THW) - C162-29 (ETHW) R-L - BR Engine coolant temperature sensor Idling, engine coolant temp. 60°C (140°F) to 120°C (248°F) 0.2 to 1.0 V
C162-23 (THF) - C162-31 (ETHF) G-B - BR Fuel temperature sensor Ignition switch ON (engine cold) 0.5 to 3.4 V
C161-29 (DATA) - C161-5 (E1) Y - BR Injection pump Within 0.5 sec. after ignition switch ON Pulse generation
C161-28 (CLK) - C161-5 (E1) L - BR Injection pump Within 0.5 sec. after ignition switch ON Pulse generation
C162-15 (THOP) - C161-5 (E1) GR - BR Throttle open switch Idling (engine warmed up) 11 to 14 V
Ignition switch ON (once within 5 sec.) 0 to 3 V
C161-14 (LU-B) - C161-7 (E01) L-Y - W-B

Throttle control motor

(intake shutter)

 Racing (engine warmed up)

Pulse generation

(See waveform 4)
C161-15 (LU+B) - C161-7 (E01) L-R - W-B

Throttle control motor

(intake shutter)

 Racing (engine warmed up)

Pulse generation

(See waveform 4)
C161-16 (LU-A) - C161-7 (E01) L-W - W-B

Throttle control motor

(intake shutter)

 Racing (engine warmed up)

Pulse generation

(See waveform 4)
C161-17 (LU+A) - C161-7 (E01) L-B - W-B

Throttle control motor

(intake shutter)

 Racing (engine warmed up)

Pulse generation

(See waveform 4)
C161-11 (TCV) - C161-7 (E01) R-W - W-B Timing control valve Ignition switch ON 11 to 14 V
Idling

Pulse generation

(See waveform 5)
C161-2 (SPV+) - C161-5 (E1) R-L - BR Spill control valve Ignition switch ON 11 to 14 V
Idling Pulse generation
C161-1 (SPV-) - C161-5 (E1) R-Y - BR Spill control valve Idling

Pulse generation

(See waveform 7)
C162-26 (TDC+) - C162-34 (TDC-) G - R Crankshaft position sensor Idling

Pulse generation

(See waveform 6)
C162-27 (NE+) - C162-35 (NE-) W - B Engine speed sensor Idling

Pulse generation

(See waveform 6)
G183-25 (CANH) - C161-5 (E1) LG - BR CAN communication line Ignition switch ON

Pulse generation

(See waveform 8)
G183-31 (CANL) - C161-5 (E1) W - BR CAN communication line Ignition switch ON

Pulse generation

(See waveform 9)

  1. Waveform 1


    1. B001DS1E08
      *a 5 V/DIV.
      *b THWO
      *c 0.1 sec./DIV.

      A/C amplifier signal

      Terminal No. (Symbol) G183-12 (THWO) - C161-5 (E1)
      Tester Range 5 V/DIV., 0.1 sec./DIV.
      Condition Idling

      Tech Tips

      Waveform time A changes according to coolant temperature.

  2. Waveform 2


    1. A01XJ61E06
      *a 2 V/DIV.
      *b 20 msec./DIV.

      Speed signal

      Terminal No. (Symbol) G182-25 (SP1) - C161-5 (E1)
      Tester Range 2 V/DIV., 20 msec./DIV.
      Condition Driving at approx. 20 km/h (12.4 mph)

      Tech Tips


      • As vehicle speed increases, the wavelength becomes shorter.

      • As vehicle speed increases, the waveform's amplitude becomes greater.

  3. Waveform 3


    1. A01XEPVE10
      *a 5 V/DIV.
      *b 20 msec./DIV.

      Engine speed signal

      Terminal No. (Symbol) G182-7 (TACH) - C161-5 (E1)
      Tester Range 5 V/DIV., 20 msec./DIV.
      Condition Idling after warming up

      Tech Tips

      As engine speed increases, the wavelength becomes shorter.

  4. Waveform 4


    1. A01XL21E04

      Throttle control motor signals

      Terminal No. (Symbol)

      C161-17 (LU+A) - C161-7 (E01)

      C161-15(LU+B) - C161-7 (E01)

      C161-16 (LU-A) - C161-7 (E01)

      C161-14 (LU-B) - C161-7 (E01)
      Tester Range 10 V/DIV., 0.5 msec./DIV.
      Condition Engine racing

  5. Waveform 5


    1. A01XLMLE09
      *1 10 V/DIV.
      *2 10 msec./DIV.

      Timing control value signal

      Terminal No. (Symbol) C161-11 (TCV) - C161-7 (E01)
      Tester Range 10 V/DIV., 10 msec./DIV.
      Condition During idling

  6. Waveform 6


    1. A01XDCAE05
      *a TDC
      *b 2 V/DIV.
      *c 20 msec./DIV.

      Crankshaft position sensor and engine speed sensor signals

      Terminal No. (Symbol)

      C162-26 (TDC+) - C162-34 (TDC-)

      C162-27 (NE+) - C162-35 (NE-)
      Tester Range 2 V/DIV., 20 msec./DIV.
      Condition During idling

  7. Waveform 7


    1. A01XHSLE05
      *1 20 V/DIV.
      *2 10 msec./DIV.

      Spill control valve signal

      Terminal No. (Symbol) C161-1 (SPV-) - C161-5 (E1)
      Tester Range 20 V/DIV., 10 msec./DIV.
      Condition During idling

  8. Waveform 8


    1. A01XHAWE22
      *a 1 V/DIV.
      *b 10 msec./DIV.

      CAN Communication Signal

      Terminal No. (Symbol) G183-25 (CANH) - C161-5 (E1)
      Tester Range 1 V/DIV., 10 msec./DIV.
      Condition Engine is stopped, ignition switch ON

  9. Waveform 9


    1. A01XHAWE22
      *a 1 V/DIV.
      *b 10 msec./DIV.

      CAN Communication Signal

      Terminal No. (Symbol) G183-31 (CANL) - C161-5 (E1)
      Tester Range 1 V/DIV., 10 msec./DIV.
      Condition Engine is stopped, ignition switch ON