Ecd System Terminals Of Ecm

Engine. Lexus Is250, Is220D. Gse20 Ale20
2Ad-Fhv Engine Control System. Lexus Is250, Is220D. Gse20 Ale20

  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

  1. Waveform 10

  1. Waveform 11

  1. Waveform 12

Ecd System -- Terminals Of Ecm



Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.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 in "Condition". Look "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown in "Specified Condition".
Use the illustration above as a reference for the ECM terminals.

Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
BATT (A49-2) - E1 (E59-109)
L - BR
Battery (for measuring the battery voltage and for the ECM memory)
Always
9 to 14 V
IGSW (A49-25) - E1 (E59-109)
B-W - BR
Engine switch
Engine switch ON (IG)
9 to 14 V
STSW (A49-9) - E1 (E59-109)
Y-B - BR
Engine switch
Engine switch ON (START)
9 to 14 V
+B (A49-1) - E1 (E59-109)
B-R - BR
Power source of ECM
Engine switch ON (IG)
9 to 14 V
MREL (A49-45) - E1 (E59-109)
Y - BR
MAIN relay
Engine switch ON (IG)
9 to 14 V
MREL (A49-45) - E1 (E59-109)
Y - BR
MAIN relay
2 seconds elapsed after engine switch OFF
0 to 1.5 V
VCVL (E59-73) - EVLU (E59-96)
V-W - BR-W
Power source of throttle position sensor
Engine switch ON (IG)
4.5 to 5.5 V
VCEG (E59-72) - EEGL (E59-95)
V-Y - GR-L
Power source of EGR position sensor
Engine switch ON (IG)
4.5 to 5.5 V
VCM (E59-69) - E2M (E59-91)
V - G-B
Power source of fuel pressure sensor
Engine switch ON (IG)
4.5 to 5.5 V
VCIB (E59-70) - EIB (E59-93)
LG - BR
Power source of battery current sensor
Engine switch ON (IG)
4.5 to 5.5 V
VCPX (E59-74) - EPEX (E59-97)
R-W - BR
Power source of differential pressure sensor
Engine switch ON (IG)
4.5 to 5.5 V
VCPM (E59-71) - EPIM (E59-94)
V - Y-G
Power source of manifold absolute pressure sensor
Engine switch ON (IG)
4.5 to 5.5 V
ACCR (A49-24) - E1 (E59-109)
W-L - BR
ACC cut signal
Engine switch ON (ACC or IG)
9 to 14 V
ACCR (A49-24) - E1 (E59-109)
W-L - BR
ACC cut signal
Cranking
0 to 1.5 V
VPA (A49-53) - EPA (A49-57)
G-W - L-Y
Accelerator pedal position sensor (for engine control)
Engine switch ON (IG), accelerator pedal fully released
0.5 to 1.1 V
VPA (A49-53) - EPA (A49-57)
G-W - L-Y
Accelerator pedal position sensor (for engine control)
Engine switch ON (IG), accelerator pedal fully depressed
3.0 to 4.6 V
VPA2 (A49-54) - EPA2 (A49-58)
P-L - G-B
Accelerator pedal position sensor (for sensor malfunction detection)
Engine switch ON (IG), accelerator pedal fully depressed
0.9 to 2.3 V
VPA2 (A49-54) - EPA2 (A49-58)
P-L - G-B
Accelerator pedal position sensor (for sensor malfunction detection)
Engine switch ON (IG), accelerator pedal fully released
3.4 to 5.0 V
VCPA (A49-55) - EPA (A49-57)
P - L-Y
Power source of accelerator pedal position sensor (for VPA1)
Engine switch ON (IG)
4.5 to 5.5 V
VCP2 (A49-56) - EPA2 (A49-58)
G-R - G-B
Power source of accelerator pedal position sensor (for VPA2)
Engine switch ON (IG)
4.5 to 5.5 V
VG (E59-65) - EVG (E59-64)
G - L-Y
Mass air flow meter
Idling, A/C switch off
0.5 to 3.4 V
THA (E59-110) - ETHA (E59-87)
G-R - O
IAT sensor
Idling, intake air temperature at 0 to 80°C (32 to 176°F)
0.5 to 3.4 V
THW (E59-111) - ETHW (E59-88)
G-R - O
ECT sensor
Idling, engine coolant temperature at 60 to 120°C (140 to 248°F)
0.2 to 1.0 V
IB (E59-116) - E1B (E59-93)
W-L - BR
Battery current sensor
Engine switch ON (IG)
0.5 to 4.5 V
THB (E59-115) - ETHB (E59-92)
LG-B - BR
Battery thermometer sensor
Engine switch ON (IG)
0.5 to 4.5 V
STA (E59-43) - E1 (E59-109)
R-B - BR
Starter signal
Cranking
6.0 V or more
STAR (E59-53) - E1 (E59-109)
L - BR
Starter drive request signal
Cranking
9 to 14 V
#1 (E59-50) - E1 (E59-109)
#2 (E59-49) - E1 (E59-109)
#3 (E59-48) - E1 (E59-109)
#4 (E59-47) - E1 (E59-109)
G-W - BR
R-Y - BR
LG-B - BR
Y-B - BR
Injector
Idling
Pulse generation
(see waveform 2)
G+ (E59-80) - G- (E59-79)
G - L
Camshaft position sensor
Idling
Pulse generation
(see waveform 4)
NE+ (E59-78) - NE- (E59-77)
G - R
Crankshaft position sensor
Idling
Pulse generation
(see waveform 4)
STP (A49-35) - E1 (E59-109)
R-B - BR
Normally open switch
Engine switch ON (IG), brake pedal depressed
7.5 to 14 V
STP (A49-35) - E1 (E59-109)
R-B - BR
Normally open switch
Engine switch ON (IG), brake pedal released
0 to 1.5 V
ST1- (A49-34) - E1 (E59-109)
G-W - BR
Normally closed switch
Engine switch ON (IG), brake pedal depressed
0 to 1.5 V
ST1- (A49-34) - E1 (E59-109)
G-W - BR
Normally closed switch
Engine switch ON (IG), brake pedal released
7.5 to 14 V
TC (A49-26) - E1 (E59-109)
V - BR
Terminal TC of DLC3
Engine switch ON (IG)
9 to 14 V
W (A49-12) - E1 (E59-109)
R-L - BR
MIL
MIL illuminated
0 to 3 V
W (A49-12) - E1 (E59-109)
R-L - BR
MIL
MIL not illuminated
9 to 14 V
SPD (A49-14) - E1 (E59-109)
Y-G - BR
Speed signal from combination meter
Engine switch ON (IG), drive wheels are rotating slowly
Pulse generation
(see waveform 7)
PIM (E59-117) - EPIM (E59-94)
W-R - Y-G
Manifold absolute pressure sensor
Apply negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg)
0.3 to 0.9 V
PIM (E59-117) - EPIM (E59-94)
W-R - Y-G
Manifold absolute pressure sensor
Same as atmospheric pressure
0.8 to 1.4 V
PIM (E59-117) - EPIM (E59-94)
W-R - Y-G
Manifold absolute pressure sensor
Apply positive pressure of 69 kPa (518 mmHg, 20.3 in.Hg)
1.6 to 2.2 V
IREL (A49-44) - E1 (E59-109)
W - BR
EDU relay
Engine switch OFF
9 to 14 V
IREL (A49-44) - E1 (E59-109)
W - BR
EDU relay
Idling
0 to 1.5 V
TACH (A49-13) - E1 (E59-109)
R-W - BR
Engine speed
Idling
Pulse generation
(see waveform 8)
VCS (E59-68) - E2S (E59-66)
GR - L-B
Common rail pressure sensor
Engine switch ON (IG)
4.5 to 5.5 V
PCR1 (E59-67) - E2M (E59-91)
P - G-B
Common rail pressure sensor (main)
Idling
1.8 to 2.1 V
PCR2 (E59-114) - E2S (E59-66)
P-L - G-B
Common rail pressure sensor (sub)
Idling
1.2 to 1.5 V
GREL (E59-56) - E1 (E59-109)
G - BR
Glow plug relay
Cranking
9 to 14 V
GREL (E59-56) - E1 (E59-109)
G - BR
Glow plug relay
Idling (Engine start after 10 minutes or more)
0 to 1.5 V
THF (E59-112) - ETHF (E59-89)
L-R - G-R
Fuel temperature sensor
Engine switch ON (IG)
0.5 to 3.4 V
ALT (E59-54) - E1 (E59-109)
P - BR
Generator duty ratio
Idling
Pulse generation
(see waveform 9)
PCV+ (E59-42) - PCV- (E59-41)
LG-B - LG
Suction control valve
Idling
Pulse generation
(see waveform 1)
PRD (E59-52) - E1 (E59-109)
R-L - BR
Pressure relief valve drive signal
Engine switch OFF
4 to 6.5 V
INJF (E59-51) - E1 (E59-109)
R-B - BR
EDU
Idling
Pulse generation
(see waveform 3)
VN (E59-84) - E1 (E59-109)
Y - BR
VRV (for VN turbocharger)
Engine switch ON (IG)
Pulse generation
(see waveform 5)
VLU (E59-119) - EVLU (E59-96)
L-W - BR-W
Throttle position sensor
Engine switch ON (IG), throttle valve fully opened
2.8 to 3.8 V
LUSL (E59-86) - E1 (E59-109)
G-R - BR
Throttle valve duty signal
Engine warmed up, engine racing
Pulse generation
(see waveform 6)
EGLS (E59-118) - EEGL (E59-95)
R-G - GR-L
EGR valve position sensor
Engine switch ON (IG)
0.6 to 1.4 V
FIV (E59-105) - E1 (E59-109)
L-R - BR
Exhaust fuel addition injector
Engine warmed up, idling, every 1 to 2 minutes
Pulse generation
THCO (E59-121) - ETCO (E59-98)
B-Y - B-R
Exhaust gas temperature sensor
Engine warmed up, Idling
4.6 to 4.9 V
THCI (E59-122) - ETCI (E59-99)
B - B-W
PEX (E59-120) - EPEX (E59-97)
W - BR
Differential pressure sensor
Engine switch ON (IG)
0.4 to 4.8 V
AF2+ (E59-103) - E1 (E59-109)
R - BR
A/F sensor
Engine switch ON (IG)
2.0 to 2.5 V
AF2- (E59-126) - E1 (E59-109)
W - BR
A/F sensor
Engine switch ON (IG)
2.0 to 2.5 V
EGRS (E59-85) - E1 (E59-109)
G-B - BR
EGR
Engine warmed up, idling
Pulse generation
(see waveform 10)
HAF2 (E59-104) - E05 (E59-46)
L-B - W-B
A/F sensor heater
Engine switch ON (IG)
9 to 14 V
VG (E59-65) - EVG (E59-64)
G - L-Y
MAF meter power source
Engine idling
0.5 to 3.4 V
FANH (E59-21) - E1 (E59-109)
GR - BR
Radiator fan relay
Radiator fan stopped
9 to 14 V
FANH (E59-21) - E1 (E59-109)
GR - BR
Radiator fan relay
Operate radiator fan
0 to 1.5 V
FANL (A49-22) - E1 (E59-109)
W - BR
Radiator fan relay
Radiator fan stopped
9 to 14 V
FANL (A49-22) - E1 (E59-109)
W - BR
Radiator fan relay
Operate radiator fan
0 to 1.5 V
THIA (E59-113) - ETHI (E59-90)
GR - BR-Y
Intake air temperature sensor (Intake manifold)
Idling, intake air temperature at 0 to 80°C (32 to 176°F)
0.5 to 3.4 V
IDLO (E59-62) - E1 (E59-109)
W-G - BR
Idling signal
Engine idling
3.4 V or more
IDLO (E59-62) - E1 (E59-109)
W-G - BR
Idling signal
Engine speed higher than idling
0.05 V or less
FC (E59-83) - E1 (E59-109)
R-W - BR
Fuel pump control
Operate fuel pump
0 to 1.5V
FC (E59-83) - E1 (E59-109)
R-W - BR
Fuel pump control
Fuel pump stopped
 9 to 14 V
MPPM (A49-18) - E1 (E59-109)
L-R - BR
Fuel route switching valve monitor
Fuel route switching valve ON
9 to 14 V
MPPM (A49-18) - E1 (E59-109)
L-R - BR
Fuel route switching valve monitor
Fuel route switching valve OFF
0 to 1.5 V
PPRM (E59-107) - E1 (E59-109)
L-W - BR
Fuel route switching valve control
Fuel route switching valve ON
0 to 1.5 V
PPRM (E59-107) - E1 (E59-109)
L-W - BR
Fuel route switching valve control
Fuel route switching valve OFF
9 to 14 V
CANH (A49-38) - E1 (E59-109)
B - BR
CAN communication line
Engine switch ON (IG)
Pulse generation
(see waveform 11)
CANL (A49-46) - E1 (E59-109)
W - BR
CAN communication line
Engine switch ON (IG)
Pulse generation
(see waveform 12)

Waveform 1


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. Suction control valve signal

    Symbols (Terminal No.)
    		PCV+ (E59-42) - PCV- (E59-41)
    Tool Setting
    		10 V/DIV., 5 ms./DIV.
    Condition
    		Idling or cranking with warm engine
    HINT:
    The waveform varies depending on the suction control valve operation.

Waveform 2


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. Injector No. 1 injection signal

  2. Injector No. 2 injection signal

  3. Injector No. 3 injection signal

  4. Injector No. 4 injection signal

    Symbols (Terminal No.)
    		(a) #1 (E59-50) - E1 (E59-109)
    (b) #3 (E59-48) - E1 (E59-109)
    (c) #4 (E59-47) - E1 (E59-109)
    (d) #2 (E59-49) - E1 (E59-109)
    Tool Setting
    		5 V/DIV., 20 ms./DIV.
    Condition
    		Idling with warm engine
    HINT:
    The waveform varies depending on the injector injection.

Waveform 3


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. Injector injection confirmation signal

    Symbols (Terminal No.)
    		INJF (E59-51) - E1 (E59-109)
    Tool Setting
    		2 V/DIV., 20 ms./DIV.
    Condition
    		Idling with warm engine
    HINT:
    The waveform varies depending on the injector injection.

Waveform 4


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. Crankshaft position sensor signal

  2. Camshaft position sensor signal

    Symbol (Terminal No.)
    		(a) NE+ (E59-78) - NE- (E59-77)
    (b) G+ (E59-80) - G- (E59-79)
    Tool Setting
    		5 V/DIV., 20 ms./DIV.
    Condition
    		Idling with warm engine
    HINT:
    The waveform varies depending on the engine revolution.

Waveform 5


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. E-VRV for turbocharger control signal

    Symbols (Terminal No.)
    		VN (E59-84) - E1 (E59-109)
    Tool Setting
    		5 V/DIV., 1 ms./DIV.
    Condition
    		Idling with warm engine
    HINT:
    The waveform changes depending on the electric vacuum regulating valve for turbocharger operation.

Waveform 6


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. Diesel throttle signal

    Symbols (Terminal No.)
    		LUSL (E59-86) - E1 (E59-109)
    Tool Setting
    		1 V/DIV., 2 ms./DIV.
    Condition
    		Warm engine with engine racing
    HINT:
    The waveform varies depending on the throttle valve operation.

Waveform 7


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. Vehicle speed signal

    Symbols (Terminal No.)
    		SPD (A49-14) - E1 (E59-109)
    Tool Setting
    		5 V/DIV., 20 ms./DIV.
    Condition
    		Driving the vehicle
    HINT:
    The wavelength becomes shorter as the vehicle speed increases.

Waveform 8


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. Engine speed signal

    Symbols (Terminal No).
    		TACH (A49-13) - E1 (E59-109)
    Tool Setting
    		5 V/DIV., 20 ms./DIV.
    Condition
    		Idling with warm engine
    HINT:
    The wavelength becomes shorter as the engine speed increases.

Waveform 9


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. Generator signal

    Symbols (Terminal No).
    		ALT (E59-54) - E1 (E59-109)
    Tool Setting
    		5 V/DIV., 5 ms./DIV.
    Condition
    		Idling

Waveform 10


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. EGR position sensor signal

    Symbols (Terminal No).
    		EGRS (E59-85) - E1 (E59-109)
    Tool Setting
    		5 V/DIV., 5 ms./DIV.
    Condition
    		Idling

Waveform 11


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. CAN communication signal

    Symbols (Terminal No).
    		CANH (A49-38) - E1 (E59-109)
    Tool Setting
    		1 V/DIV., 10 μsec./DIV.
    Condition
    		Engine not running and engine switch on (IG)
    HINT:
    The waveform varies depending on the CAN communication signal.

Waveform 12


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Engine Control System.Ecd System.Ecd System Terminals Of Ecm

  1. CAN communication signal

    Symbols (Terminal No).
    		CANL (A49-46) - E1 (E59-109)
    Tool Setting
    		1 V/DIV., 10 μsec./DIV.
    Condition
    		Engine not running and engine switch on (IG)
    HINT:
    The waveform varies depending on the CAN communication signal.