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Terminals of ecm


Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10

 

 

HINT:
 
The standard normal voltage between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of the terminals, and 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
A60-20 (BATT) - D27-104 (E1) R - BR Auxiliary battery (for measuring auxiliary battery voltage and for ECM memory) Always 11 to 14 V
A60-2 (+B) - D27-104 (E1) B - BR Power source of ECM Power switch on (IG) 11 to 14 V
A60-1 (+B2) - D27-104 (E1) B - BR Power source of ECM Power switch on (IG) 11 to 14 V
A60-3 (+BM) - D27-104 (E1) GR - BR Power source of throttle actuator Always 11 to 14 V
D27-108 (IGT1) - D27-104 (E1) GR - BR Ignition coil assembly
(ignition signal)
Idling Pulse generation
(see waveform 1)
D27-107 (IGT2) - D27-104 (E1) W - BR
D27-106 (IGT3) - D27-104 (E1) G - BR
D27-105 (IGT4) - D27-104 (E1) Y - BR
D27-23 (IGF1) - D27-104 (E1) L - BR Ignition coil assembly
(ignition confirmation signal)
Power switch on (IG) 4.5 to 5.5 V
Idling Pulse generation
(see waveform 1)
D27-74 (NE+) - D27-120 (NE-) B - W Crankshaft position sensor Idling with warm engine Pulse generation
(see waveform 2)
D27-76 (G2+) - D27-122 (G2-) B - W Camshaft position sensor Idling with warm engine Pulse generation
(see waveform 2)
D27-85 (#10) - D27-109 (E01) Y - BR Fuel injector assembly Power switch on (IG) 11 to 14 V
D27-84 (#20) - D27-109 (E01) B - BR
D27-83 (#30) - D27-109 (E01) L - BR
D27-82 (#40) - D27-109 (E01) R - BR
D27-85 (#10) - D27-109 (E01) Y - BR Fuel injector assembly Idling Pulse generation
(see waveform 3)
D27-84 (#20) - D27-109 (E01) B - BR
D27-83 (#30) - D27-109 (E01) L - BR
D27-82 (#40) - D27-109 (E01) R - BR
D27-18 (HA1A) - D27-46 (E04) Y - BR Air fuel ratio sensor (sensor 1) heater Power switch on (IG) 11 to 14 V
Idling with warm engine Pulse generation
(see waveform 4)
D27-103 (A1A+) - D27-104 (E1) Y - BR Air fuel ratio sensor (sensor 1) Idling 3.3 V*1
D27-126 (A1A-) - D27-104 (E1) BR - BR Air fuel ratio sensor (sensor 1) Idling 3.0 V*1
D27-41 (HT1B) - D27-86 (E03) BR - BR Heated oxygen sensor (sensor 2) heater Power switch on (IG) 11 to 14 V
Idling Below 3.0 V
D27-125 (OX1B) - D27-102 (O1B-) L - P Heated oxygen sensor (sensor 2) Engine speed maintained at 2500 rpm for 2 minutes after warming up engine Pulse generation
(see waveform 5)
D27-87 (KNK1) - D27-110 (EKNK) B - W Knock control sensor Engine speed maintained at 2500 rpm after warming up engine Pulse generation
(see waveform 6)
D27-64 (THW) - D27-65 (ETHW) P - BR Engine coolant temperature sensor Idling, Engine coolant temperature 80°C (176°F) 0.2 to 1.0 V
D27-116 (THA) - D27-93 (ETHA) P - BR Intake air temperature sensor (built into mass air flow meter sub-assembly) Idling, Intake air temperature 20°C (68°F) 0.5 to 3.4 V
D27-94 (VG) - D27-117 (E2G) B - W Mass air flow meter sub-assembly Idling, shift lever in N, A/C switch OFF 0.5 to 3.0 V
A60-36 (W) - D27-104 (E1) LG - BR MIL Power switch on (IG) (MIL goes on) Below 3.0 V
Idling 11 to 14 V
D27-90 (VTA1) - D27-111 (ETA) Y - G Throttle position sensor (for engine control) Accelerator pedal released
(Throttle valve fully closed)
0.5 to 1.1 V
D27-89 (VTA2) - D27-111 (ETA) B - G Throttle position sensor (for sensor malfunction detection) Accelerator pedal released
(Throttle valve fully closed)
2.1 to 3.1 V
D27-88 (VCTA) - D27-111 (ETA) R - G Power source of throttle position sensor (specific voltage) Power switch on (IG) 4.5 to 5.5 V
D27-21 (M+) - D27-19 (ME01) L - BR Throttle actuator Idling with warm engine Pulse generation
(see waveform 7)
D27-20 (M-) - D27-19 (ME01) P - BR Throttle actuator Idling with warm engine Pulse generation
(see waveform 8)
D27-28 (PRG) - D27-104 (E1) V - BR Purge VSV Power switch on (IG) 11 to 14 V
Idling, under purge control Pulse generation
(see waveform 9)
A60-8 (FC) - D27-104 (E1) R - BR Fuel pump control Power switch on (IG) 11 to 14 V
Idling Below 1.5 V
A60-7 (TC) - D27-104 (E1) P - BR Terminal TC of DLC3 Power switch on (IG) 11 to 14 V
A60-26 (TACH) - D27-104 (E1) B - BR Engine speed Idling Pulse generation
(see waveform 10)
D27-36 (OC1+) - D27-59 (OC1-) Y - G Camshaft timing oil control valve assembly Idling Pulse generation
(see waveform 11)
A60-13 (CANH) - D27-104 (E1) P - BR CAN communication line Engine stopped and power switch on (IG) Pulse generation
(see waveform 12)
A60-5 (CANL) - D27-104 (E1) V - BR CAN communication line Engine stopped and power switch on (IG) Pulse generation
(see waveform 13)
A60-12 (CANP) - D27-104 (E1) B - BR CAN communication line Engine stopped and power switch on (IG) Pulse generation
(see waveform 12)
A60-4 (CANN) - D27-104 (E1) W - BR CAN communication line Engine stopped and power switch on (IG) Pulse generation
(see waveform 13)
A60-28 (IGSW) - D27-104 (E1) W - BR Power switch Power switch on (IG) 11 to 14 V
A60-6 (MREL) - D27-104 (E1) G - BR EFI MAIN relay Power switch on (IG) 11 to 14 V
D27-99 (VCV1) - D27-104 (E1) R - BR Power source of camshaft position sensor Power switch on (IG) 4.5 to 5.5 V
A60-10 (WPO) - D27-104 (E1) L - BR Engine water pump assembly Idling with warm engine Pulse generation
(see waveform 14)
A60-11 (WPI) - D27-104 (E1) G - BR Engine water pump assembly Idling with warm engine Pulse generation
(see waveform 15)
D27-72 (VCPM) - D27-71 (EPIM) L - Y Manifold absolute pressure sensor Power switch on (IG) 4.5 to 5.5 V
D27-69 (PIM) - D27-71 (EPIM) B - Y Manifold absolute pressure sensor Power switch on (IG) 3.0 to 5.0 V
D27-45 (EGR1) - D27-104 (E1) R - BR EGR valve assembly Repeating quick engine speed accelerations Pulse generation
(see waveform 16)
D27-44 (EGR2) - D27-104 (E1) V - BR EGR valve assembly Repeating quick engine speed accelerations Pulse generation
(see waveform 16)
D27-43 (EGR3) - D27-104 (E1) Y - BR EGR valve assembly Repeating quick engine speed accelerations Pulse generation
(see waveform 16)
D27-42 (EGR4) - D27-104 (E1) LG - BR EGR valve assembly Repeating quick engine speed accelerations Pulse generation
(see waveform 16)
D27-48 (G2O) - D27-104 (E1) Y - BR Camshaft position signal Idling Pulse generation
(see waveform 17)
A60-22 (FANH) - D27-104 (E1) LG - BR Cooling fan relay Power switch on (IG) 11 to 14 V
A60-21 (FANL) - D27-104 (E1) L - BR Cooling fan relay Power switch on (IG) 11 to 14 V
A60-46 (PWMS) - D27-104 (E1) G - BR Combination switch assembly (mode switch) Power switch on (IG), mode switch being turned and held at SPORT position 0 to 1.5 V
A60-30 (NE01) - D27-104 (E1) L - BR Combination switch assembly (mode switch) Power switch on (IG), mode switch being pushed and held at NORMAL position 0 to 1.5 V
D27-104 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
D27-109 (E01) - Body ground BR - Body ground Ground Always Below 1 Ω
D27-81 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
D27-86 (E03) - Body ground BR - Body ground Ground Always Below 1 Ω
D27-46 (E04) - Body ground BR - Body ground Ground Always Below 1 Ω
A60-32 (EC) - Body ground W-B - Body ground Ground Always Below 1 Ω
D27-22 (GE01) - D27-104 (E1) W-B - BR Shield earth (ground) circuit of throttle actuator Always Below 1 V

 

HINT:
 
*1: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
WAVEFORM 1
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Igniter IGT Signal (from ECM to Igniter) and Igniter IGF Signal (from Igniter to ECM) 
Terminal No. (symbol) Tool Setting Condition
D27-108 (IGT1) - D27-104 (E1) 2 V/DIV., 20 ms./DIV. Idling
D27-107 (IGT2) - D27-104 (E1) 2 V/DIV., 20 ms./DIV. Idling
D27-106 (IGT3) - D27-104 (E1) 2 V/DIV., 20 ms./DIV. Idling
D27-105 (IGT4) - D27-104 (E1) 2 V/DIV., 20 ms./DIV. Idling
D27-23 (IGF1) - D27-104 (E1) 2 V/DIV., 20 ms./DIV. Idling

 

HINT:
 
The wavelength becomes shorter as the engine speed increases.
WAVEFORM 2
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Crankshaft Position Sensor and Camshaft Position Sensor Signal 
Terminal No. (symbol) Tool Setting Condition
D27-74 (NE+) - D27-120 (NE-) 5 V/DIV., 20 ms./DIV. Idling with warm engine
D27-76 (G2+) - D27-122 (G2-) 5 V/DIV., 20 ms./DIV. Idling with warm engine

 

HINT:
 
The wavelength becomes shorter as the engine speed increases.

 

 

WAVEFORM 3
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
No. 1 (to No. 4) Fuel Injector Assembly Signal 
Terminal No. (symbol) Tool Setting Condition
D27-85 (#10) - D27-109 (E01) 20 V/DIV., 20 ms./DIV. Idling
D27-84 (#20) - D27-109 (E01) 20 V/DIV., 20 ms./DIV. Idling
D27-83 (#30) - D27-109 (E01) 20 V/DIV., 20 ms./DIV. Idling
D27-82 (#40) - D27-109 (E01) 20 V/DIV., 20 ms./DIV. Idling

 

HINT:
 
The wavelength becomes shorter as the engine speed increases.
WAVEFORM 4
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Air Fuel Ratio Sensor (Sensor 1) Heater Signal 
Terminal No. (symbol) Tool Setting Condition
D27-18 (HA1A) - D27-46 (E04) 5 V/DIV., 10 ms./DIV. Idling with warm engine

 

HINT:
 
The wavelength varies in accordance with the engine operating condition.

 

 

WAVEFORM 5
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Heated Oxygen Sensor (Sensor 2) Signal 
Terminal No. (symbol) Tool Setting Condition
D27-125 (OX1B) - D27-102 (O1B-) 0.2 V/DIV., 200 ms./DIV. Engine speed maintained at 2500 rpm for 2 minutes after warming up engine

 

HINT:
 
In the Data List, the items O2S B1S2 show the values input to the ECM from the heated oxygen sensor.
WAVEFORM 6
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Knock Control Sensor Signal 
Terminal No. (symbol) Tool Setting Condition
D27-87 (KNK1) - D27-110 (EKNK) 1 V/DIV., 1 ms./DIV. Engine speed maintained at 2500 rpm after warming up engine

 

HINT:
 
  1. The wavelength becomes shorter as the engine speed increases.
  2. The waveforms and amplitudes displayed differ slightly depending on the vehicle condition.

 

 

WAVEFORM 7
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Throttle Actuator Positive Terminal Signal 
Terminal No. (symbol) Tool Setting Condition
D27-21 (M+) - D27-19 (ME01) 5 V/DIV., 1 ms./DIV. Idling with warm engine

 

HINT:
 
The duty ratio varies depending on the throttle actuator operation.
WAVEFORM 8
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Throttle Actuator Negative Terminal Signal 
Terminal No. (symbol) Tool Setting Condition
D27-20 (M-) - D27-19 (ME01) 5 V/DIV., 1 ms./DIV. Idling with warm engine

 

HINT:
 
The duty ratio varies depending on the throttle actuator operation.
WAVEFORM 9
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Purge VSV 
Terminal No. (symbol) Tool Setting Condition
D27-28 (PRG) - D27-104 (E1) 10 V/DIV., 20 ms./DIV. Idling, under purge control

 

HINT:
 
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.

 

WAVEFORM 10
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Engine Speed Signal 
Terminal No. (Symbol) Tool Setting Condition
A60-26 (TACH) - D27-104 (E1) 5 V/DIV., 10 ms./DIV. Idling

 

HINT:
 
The wavelength becomes shorter as the engine speed increases.

 

 

WAVEFORM 11
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Camshaft Timing Oil Control Valve Assembly Signal 
Terminal No. (symbol) Tool Setting Condition
D27-36 (OC1+) - D27-59 (OC1-) 5 V/DIV., 1 ms./DIV. Idling

 

WAVEFORM 12
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
CAN Communication Signal (Reference) 
Terminal No. (symbol) Tool Setting Condition
A60-13 (CANH) - D27-104 (E1) 1 V/DIV., 10 μsec./DIV. Engine stopped and power switch on (IG)
A60-12 (CANP) - D27-104 (E1) 1 V/DIV., 10 μsec./DIV. Engine stopped and power switch on (IG)

 

HINT:
 
The waveform varies depending on the CAN communication signal.

 

 

WAVEFORM 13
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
CAN Communication Signal (Reference) 
Terminal No. (symbol) Tool Setting Condition
A60-5 (CANL) - D27-104 (E1) 1 V/DIV., 10 μsec./DIV. Engine stopped and power switch on (IG)
A60-4 (CANN) - D27-104 (E1) 1 V/DIV., 10 μsec./DIV. Engine stopped and power switch on (IG)

 

HINT:
 
The waveform varies depending on the CAN communication signal.

 

 

WAVEFORM 14
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Engine Water Pump Assembly Signal (from ECM to Engine Water Pump Assembly) 
Terminal No. (symbol) Tool Setting Condition
A60-10 (WPO) - D27-104 (E1) 5 V/DIV., 20 ms./DIV. Idling with warm engine

 

HINT:
 
The wavelength becomes shorter as the engine water pump assembly speed increases.

 

 

WAVEFORM 15
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Engine Water Pump Assembly Signal (from Engine Water Pump Assembly to ECM) 
Terminal No. (symbol) Tool Setting Condition
A60-11 (WPI) - D27-104 (E1) 5 V/DIV., 20 ms./DIV. Idling with warm engine

 

HINT:
 
The wavelength becomes shorter as the engine water pump assembly speed increases.

 

 

WAVEFORM 16
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
EGR Valve Assembly Signal 
Terminal No. (symbol) Tool Setting Condition
D27-45 (EGR1) - D27-104 (E1) 20 V/DIV., 50 ms./DIV. Repeating quick engine speed accelerations
D27-44 (EGR2) - D27-104 (E1) 20 V/DIV., 50 ms./DIV. Repeating quick engine speed accelerations
D27-43 (EGR3) - D27-104 (E1) 20 V/DIV., 50 ms./DIV. Repeating quick engine speed accelerations
D27-42 (EGR4) - D27-104 (E1) 20 V/DIV., 50 ms./DIV. Repeating quick engine speed accelerations

 

WAVEFORM 17
Terminals of ecm 2ZR-FXE ENGINE CONTROL / Lexus CT200h / ZWA10
Camshaft Revolution Signal from ECM to Power Management Control ECU and Inverter with Converter Assembly 
Terminal No. (symbol) Tool Setting Condition
D27-48 (G2O) - D27-104 (E1) 5 V/DIV., 20 ms./DIV. Idling

 

HINT:
 
The wavelength becomes shorter as the engine speed increases.