Ecd System Terminals Of Ecm

  1. Waveform 1

  1. Waveform 2

  1. Waveform 3

  1. Waveform 4

  1. Waveform 5

  1. Waveform 6

  1. Waveform 7

  1. Waveform 8

  1. Waveform 9

Ecd System -- Terminals Of Ecm



Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm


HINT:
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)

Waveform 1


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. A/C amplifier signal

    Terminal No. (Symbol)
    		G183-12 (THWO) - C161-5 (E1)
    Tester Range
    		5 V/DIV., 0.1 sec./DIV.
    Condition
    		Idling
    HINT:
    Waveform time A changes according to coolant temperature.

Waveform 2


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. 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)
    HINT:
    1. As vehicle speed increases, the wavelength becomes shorter.
    2. As vehicle speed increases, the waveform's amplitude becomes greater.

Waveform 3


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. 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
    HINT:
    As engine speed increases, the wavelength becomes shorter.

Waveform 4


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. 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

Waveform 5


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. Timing control value signal

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

Waveform 6


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. 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

Waveform 7


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. Spill control valve signal

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

Waveform 8


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. 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

Waveform 9


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd System Terminals Of Ecm

  1. 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