Ecd System Terminals Of Ecm

  1. WAVEFORM 1

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  1. WAVEFORM 3

  1. WAVEFORM 4

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  1. WAVEFORM 7

  1. WAVEFORM 8

  1. WAVEFORM 9

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  1. WAVEFORM 11

Ecd System -- Terminals Of Ecm



Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv 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
G57-23 (BATT) - C93-1 (E1)
L - BR
Battery (for measuring the battery voltage and for the ECM memory)
Always
11 to 14 V
G58-24 (IGSW) - C93-1 (E1)
W - BR
Ignition switch lock cylinder assembly
Ignition switch ON
11 to 14 V
G57-24 (+B) - C93-1 (E1)
W - BR
Power source of ECM
Ignition switch ON
11 to 14 V
G57-17 (+B2) - C93-1 (E1)
W - BR
Power source of ECM
Ignition switch ON
11 to 14 V
G58-11 (MREL) - C93-1 (E1)
V - BR
EFI relay
Ignition switch ON
11 to 14 V
G58-11 (MREL) - C93-1 (E1)
V - BR
EFI relay
10 seconds elapsed after ignition switch off
0 to 1.5 V
G58-6 (VCPA) - G58-5 (EPA)
LG - P
Power source of accelerator pedal position sensor (for VPA)
Ignition switch ON
4.5 to 5.5 V
G58-4 (VCP2) - G58-3 (EPA2)
R - W
Power source of accelerator pedal position sensor (for VPA2)
Ignition switch ON
4.5 to 5.5 V
G57-2 (VPA) - G58-5 (EPA)
L - P
Accelerator pedal position sensor (for engine control)
Ignition switch ON, accelerator pedal fully released
0.5 to 1.1 V
G57-2 (VPA) - G58-5 (EPA)
L - P
Accelerator pedal position sensor (for engine control)
Ignition switch ON, accelerator pedal fully depressed
3.0 to 4.6 V
G57-1 (VPA2) - G58-3 (EPA2)
GR - W
Accelerator pedal position sensor (for sensor malfunction detection)
Ignition switch ON, accelerator pedal fully released
0.9 to 2.3 V
G57-1 (VPA2) - G58-3 (EPA2)
GR - W
Accelerator pedal position sensor (for sensor malfunction detection)
Ignition switch ON, accelerator pedal fully depressed
3.4 to 5.0 V
C90-17 (VG) - C90-18 (EVG)
W - B-W
Mass air flow meter
Idling, A/C switch off
0.5 to 3.4 V
C90-6 (THA) - C90-12 (ETHA)
Y-B - BR
Intake air temperature sensor (built into mass air flow meter)
Idling, intake air temperature at 20°C (68°F)
0.5 to 3.4 V
C90-3 (THIA) - C90-9 (ETHI)
B - BR
Intake air temperature sensor (turbo)
Idling, intake air temperature at 0 to 80°C (32 to 176°F)
0.5 to 3.4 V
C90-5 (THW) - C90-11 (ETHW)
R-L - BR
Engine coolant temperature sensor
Idling, engine coolant temperature at 80°C (176°F)
0.2 to 1.0 V
C90-4 (THF) - C90-10 (ETHF)
G-B - BR
Fuel temperature sensor
Ignition switch ON
0.5 to 3.4 V
G57-6 (STA) - C93-1 (E1)
W - BR
Starter signal
Cranking
6.0 V or higher
C90-21 (#1) - C93-1 (E1)
C90-22 (#2) - C93-1 (E1)
C90-23 (#3) - C93-1 (E1)
C90-24 (#4) - C93-1 (E1)
B-W - BR
L - BR
R-L - BR
Y - BR
Injector assembly
Idling
Pulse generation
(See waveform 2)
C92-13 (G+) - C92-14 (G-)
G - R
Camshaft position sensor
Idling
Pulse generation
(See waveform 4)
C92-7 (NE+) - C92-8 (NE-)
W - B
Crankshaft position sensor
Idling
Pulse generation
(See waveform 4)
G57-8 (STP) - C93-1 (E1)
V - BR
Stop light switch assembly
Ignition switch ON, brake pedal depressed
7.5 to 14 V
G57-8 (STP) - C93-1 (E1)
V - BR
Stop light switch assembly
Ignition switch ON, brake pedal released
0 to 1.5 V
G57-9 (ST1-) - C93-1 (E1)
B - BR
Stop light switch assembly
(opposite to STP)
Ignition switch ON, brake pedal depressed
0 to 1.5 V
G57-9 (ST1-) - C93-1 (E1)
B - BR
Stop light switch assembly
(opposite to STP)
Ignition switch ON, brake pedal released
7.5 to 14 V
C91-15 (CLSW)*1 - C93-1 (E1)
B - BR
Clutch switch assembly
Ignition switch ON, clutch pedal released
8.5 to 14 V
G58-23 (TC) - C93-1 (E1)
V - BR
Terminal TC of DLC3
Ignition switch ON
11 to 14 V
G57-19 (W) - C93-1 (E1)
V - BR
MIL
MIL illuminated
0 to 3 V
G57-19 (W) - C93-1 (E1)
V - BR
MIL
MIL not illuminated
11 to 14 V
G58-30 (SPD) - C93-1 (E1)
R - BR
Speed signal from combination meter assembly
Ignition switch ON, slowly wheel rotated
Pulse generation
(See waveform 9)
C91-12 (VCPM) - C91-16 (EPIM)
R - B
Power source of manifold absolute pressure sensor
Ignition switch ON
4.5 to 5.5 V
C91-5 (PIM) - C91-16 (EPIM)
L-B - B
Manifold absolute pressure sensor
Negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg) applied
0.1 to 0.7 V
C91-5 (PIM) - C91-16 (EPIM)
L-B - B
Manifold absolute pressure sensor
Same as atmospheric pressure
0.8 to 1.5 V
C91-5 (PIM) - C91-16 (EPIM)
L-B - B
Manifold absolute pressure sensor
Positive pressure of 170 kPa (1275 mmHg, 50.2 in.Hg) applied
1.6 to 2.3 V
G58-12 (IREL) - C93-1 (E1)
B - BR
EDU relay
Ignition switch ON
0 to 1.5 V
G57-18 (TACH) - C93-1 (E1)
P - BR
Engine speed
Idling
Pulse generation
C90-14 (VCM) - C90-15 (E2M)
Y-B - GR
Power source of fuel pressure sensor (for PCR1)
Ignition switch ON
4.5 to 5.5 V
C90-13 (VCS) - C90-8 (E2S)
LG - L
Power source of fuel pressure sensor (for PCR2)
Ignition switch ON
4.5 to 5.5 V
C90-16 (PCR1) - C90-15 (E2M)
R - GR
Fuel pressure sensor (main)
Idling
1.8 to 2.1 V
C90-2 (PCR2) - C90-8 (E2S)
Y - L
Fuel pressure sensor (sub)
Idling
1.2 to 1.5 V
C91-19 (GREL) - C93-1 (E1)
R - BR
GLOW relay
Cranking
11 to 14 V
C91-19 (GREL) - C93-1 (E1)
R - BR
GLOW relay
Idling
0 to 1.5 V
C91-23 (ALT) - C93-1 (E1)
L - BR
Generator assembly (Alternator) duty ratio
Idling
Pulse generation
C92-23 (PCV+) - C92-12 (PCV-)
W - B
Suction control valve
Idling
Pulse generation
(See waveform 1)
C90-20 (INJF) - C93-1 (E1)
BR - BR
Injector driver
Idling
Pulse generation
(See waveform 3)
C90-19 (PRD) - C93-1 (E1)
B - BR
Pressure discharge valve drive signal
Ignition switch off
4 to 5.5 V
C93-6 (M+) - C93-1 (E1)
W - BR
DC motor (turbocharger sub-assembly)
Idling
Pulse generation
(See waveform 6)
C93-7 (M-) - C93-1 (E1)
B - BR
DC motor (turbocharger sub-assembly)
Idling
Pulse generation
(See waveform 7)
C91-11 (VNVC) - C91-10 (VNE2)
W - L
Power source of nozzle vane position sensor
Ignition switch ON
4.5 to 5.5 V
C91-6 (VTA1) - C91-10 (VNE2)
R - L
Nozzle vane position sensor
Ignition switch ON
2.3 to 2.7 V
C91-8 (VCVL) - C91-9 (EVLU)
R - W
Power source of throttle position sensor
Ignition switch ON
4.5 to 5.5 V
C91-3 (VLU) - C91-9 (EVLU)
LG- W
Throttle position sensor
Ignition switch ON, throttle valve
fully opened
3.6 to 4.2 V
C91-3 (VLU) - C91-9 (EVLU)
LG- W
Throttle position sensor
Ignition switch ON, throttle valve
fully closed
0.4 to 1.0 V
C92-15 (LUSL) - C93-1 (E1)
L-R - BR
Diesel throttle duty signal
Engine warmed up, racing engine
Pulse generation
(See waveform 8)
C91-13 (VCEG) - C91-14 (EEGL)
R - BR
Power source of EGR valve position sensor
Ignition switch ON
4.5 to 5.5 V
C91-4 (EGLS) - C91-14 (EEGL)
B - BR
EGR valve position sensor
Ignition switch ON
0.6 to 1.4 V
C93-9 (EGR) - C93-1 (E1)
W-R - BR
Electric vacuum regulating valve assembly
Ignition switch ON
Pulse generation
(See waveform 5)
C92-9 (EGRC) - C93-1 (E1)
P-L - BR
Vacuum switching valve (for EGR Cut)
Ignition switch ON, EGR cut (accelerator pedal fully depressed)
0 to 1.5 V
C93-4 (ECBV) - C93-1 (E1)
L-Y - BR
Vacuum switching valve (for EGR bypass valve)
ON (open)
Idling (engine coolant temperature 70°C (158°F) or more)
0 to 1.5 V
OFF (closed)
Idling (engine coolant temperature 70°C (158°F) or more)
7.5 to 14 V
C93-2 (SCV) - C93-12 (E01)
B-W - W-B
Vacuum switching valve (for No. 1 swirl control valve)
Idling
0 to 1.5 V
Engine speed 2600 rpm or more
11 to 14 V
C93-3 (SCV2) - C93-12 (E01)
L-B - W-B
Vacuum switching valve (for No. 2 swirl control valve)
Idling
0 to 1.5 V
Engine speed 2,600 rpm or more
11 to 14 V
C92-20 (PSW) - C93-12 (E01)
G - W-B
Power steering oil pressure switch
Steering wheel turned
0 to 3 V
Steering wheel not turned
11 to 14 V
G57-10 (ACM) - C93-12 (E01)
B - W-B
Vacuum switching valve (for engine mounting)
Idling
0 to 1.5 V
G58-10 (AC1) - C93-12 (E01)
LG - W-B
A/C signal
A/C switch on
0 to 1.5 V
A/C switch off
11 to 14 V
G58-13 (ACT) - C93-12 (E01)
R - W-B
A/C signal
Ignition switch ON
11 to 14 V
A/C cut control on
0 to 3 V
G57-7 (FC) - C93-12 (E01)
G - W-B
Sub pump relay
Relay on
0 to 1.5 V
Relay off
7.5 to 14 V
C92-26 (NSW)*2 - C93-12 (E01)
B - W-B
Park/neutral position switch assembly
Ignition switch ON, shift lever in P or N
Below 3 V
Ignition switch ON, shift lever not in P and N
11 to 14 V
C91-15 (D)*2 - C93-12 (E01)
G - W-B
Park/neutral position switch assembly
Ignition switch ON, shift lever in D
11 to 14 V
Ignition switch ON, shift lever not in D
Below 1 V
G57-22 (FAN) - C93-12 (E01)
GR - W-B
FAN relay
Ignition switch ON
11 to 14 V
Idling with A/C on or High engine coolant temperature
Below 1.5 V
G58-36 (CANL) - C93-1 (E1)
W - BR
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 10)
G58-35 (CANH) - C93-1 (E1)
LG - BR*3
R - BR*4
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 11)
G57-21 (CANN) - C93-1 (E1)
GR - BR
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 10)
G57-20 (CANP) - C93-1 (E1)
BR - BR
CAN communication line
Ignition switch ON
Pulse generation
(See waveform 11)
HINT:
  1. *1: for Manual Transaxle
  2. *2: for Automatic Transaxle
  3. *3: RHD
  4. *4: LHD

WAVEFORM 1
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
Suction Control Valve Signal
Item
Content
Terminal No. (Symbol)
C92-23 (PCV+) - C92-12 (PCV-)
Tool Setting
10 V/DIV., 5 msec./DIV.
Condition
Idling or cranking with warm engine
HINT:
The waveform varies depending on suction control valve operation.

WAVEFORM 2
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
Injector No. 1 (to No. 4) Injection Signal
Item
Content
Terminal No. (Symbol)
(a) C90-21 (#1) - C93-1 (E1)
(b) C90-22 (#2) - C93-1 (E1)
(c) C90-23 (#3) - C93-1 (E1)
(d) C90-24 (#4) - C93-1 (E1)
Tool Setting
5 V/DIV., 20 msec./DIV.
Condition
Idling with warm engine
HINT:
The waveform varies depending on the injector injection.

WAVEFORM 3
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
Injector Injection Confirmation Signal
Item
Content
Terminal No. (Symbol)
C90-20 (INJF) - C93-1 (E1)
Tool Setting
2 V/DIV., 20 msec./DIV.
Condition
Idling with warm engine
HINT:
The waveform varies depending on the injector injection.

WAVEFORM 4
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
Crankshaft Position Sensor Signal and Camshaft Position Sensor Signal
Item
Content
Terminal No. (Symbol)
(a) C92-7 (NE+) - C92-8 (NE-)
(b) C92-13 (G+) - C92-14 (G-)
Tool Setting
5 V/DIV., 20 msec./DIV.
Condition
Idling with warm engine
HINT:
The waveform varies depending on the engine speed.

WAVEFORM 5
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
E-VRV for EGR Signal
Item
Content
Terminal No. (Symbol)
C93-9 (EGR) - C93-1 (E1)
Tool Setting
5 V/DIV., 1 msec./DIV.
Condition
Idling with warm engine
HINT:
The waveform changes depending on electric vacuum regulating valve assembly operation.

WAVEFORM 6
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
DC Motor Positive Terminal
Item
Content
Terminal No. (Symbol)
C93-6 (M+) - C93-1 (E1)
Tool Setting
5 V/DIV., 20 msec./DIV.
Condition
Idling with warm engine
HINT:
The waveform varies depending on turbocharger operation.

WAVEFORM 7
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
DC Motor Negative Terminal
Item
Content
Terminal No. (Symbol)
C93-7 (M-) - C93-1 (E1)
Tool Setting
5 V/DIV., 50 msec./DIV.
Condition
Idling with warm engine
HINT:
The waveform varies depending on the turbocharger status.

WAVEFORM 8
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
Diesel Throttle Signal
Item
Content
Terminal No. (Symbol)
C92-15 (LUSL) - C93-1 (E1)
Tool Setting
1 V/DIV., 2 msec./DIV.
Condition
Racing with warm engine
HINT:
The waveform varies depending on throttle valve operation.

WAVEFORM 9
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
Vehicle Speed Signal
Item
Content
Terminal No. (Symbol)
G58-30 (SPD) - C93-1 (E1)
Tool Setting
5 V/DIV., 10 msec./DIV.
Condition
Driving at vehicle speed of 40 km/h (25 mph)
HINT:
The wavelength becomes shorter as the vehicle speed increases.

WAVEFORM 10
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
CAN Communication Signal
Item
Content
Terminal No. (Symbol)
G58-36 (CANL) - C93-1 (E1)
G57-21 (CANN) - C93-1 (E1)
Tool Setting
1 V/DIV., 10 msec./DIV.
Condition
Engine stopped, ignition switch ON
HINT:
The waveform varies depending on the CAN communication signal.

WAVEFORM 11
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Terminals Of Ecm
CAN Communication Signal
Item
Content
Terminal No. (Symbol)
G58-35 (CANH) - C93-1 (E1)
G57-20 (CANP) - C93-1 (E1)
Tool Setting
1 V/DIV., 10 msec./DIV.
Condition
Engine stopped, ignition switch ON
HINT:
The waveform varies depending on the CAN communication signal.