Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
2Tr-Fe Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  1. CHECK ECM

Sfi System (W/ Secondary Air Injection System) -- Terminals Of Ecm



CHECK ECM

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  1. Measure the voltage according to the value(s) in the table below.

    HINT:
    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, 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
    G89-3 (BATT) - C75-3 (E1)
    		L - BR
    		Battery (for measuring battery voltage and for ECM memory)
    		Always
    		11 to 14 V
    G89-7 (+BM) - C75-3 (E1)
    		R-W - BR
    		Power source of throttle actuator
    		Always
    		11 to 14 V
    G89-9 (IGSW) - C75-3 (E1)
    		B-O - BR
    		Ignition switch
    		Ignition switch ON
    		11 to 14 V
    G89-1 (+B) - C75-3 (E1)
    		B - BR
    		Power source of ECM
    		Ignition switch ON
    		11 to 14 V
    C75-13 (OC1+) - C75-12 (OC1-)
    		P-L - Y
    		Camshaft timing oil control valve
    		Idling
    		Pulse generation
    (See waveform 1)
    G89-8 (MREL) - C75-3 (E1)
    		W-G - BR
    		MAIN relay
    		Ignition switch ON
    		11 to 14 V
    C76-28 (VG) - C76-30 (E2G)
    		L-W - L-R
    		Mass air flow meter
    		Idling, shift lever in neutral, A/C off
    		0.5 to 3.0 V
    C76-29 (THA) - C75-28 (E2)
    		L-B - BR
    		Intake air temperature sensor
    		Idling, intake air temperature 20°C (68°F)
    		0.5 to 3.4 V
    C75-32 (THW) - C75-28 (E2)
    		B - BR
    		Engine coolant temperature sensor
    		Idling, engine coolant temperature 80°C (176°F)
    		0.2 to 1.0 V
    C75-18 (VC) - C75-28 (E2)
    		LG-B - BR
    		Power source of throttle position sensor (fixed voltage)
    		Ignition switch ON
    		4.5 to 5.5 V
    C75-20 (VTA1) - C75-28 (E2)
    		B-R - BR
    		Throttle position sensor (for engine control)
    		Ignition switch ON,
    throttle valve fully closed
    		0.5 to 1.1 V
    Ignition switch ON,
    throttle valve fully open
    		3.2 to 4.8 V
    C75-19 (VTA2) - C75-28 (E2)
    		LG - BR
    		Throttle position sensor (for sensor malfunction detection)
    		Ignition switch ON,
    throttle valve fully closed
    		2.1 to 3.1 V
    Ignition switch ON,
    throttle valve fully open
    		4.6 to 5.0 V
    G89-18 (VPA) - G89-20 (EPA)
    		W-L - BR-W
    		Accelerator pedal position sensor (for engine control)
    		Ignition switch ON,
    accelerator pedal released
    		0.5 to 1.1 V
    Ignition switch ON,
    accelerator pedal fully depressed
    		2.6 to 4.5 V
    G89-19 (VPA2) - G89-21 (EPA2)
    		GR-G - BR-Y
    		Accelerator pedal position sensor (for sensor malfunction detection)
    		Ignition switch ON,
    accelerator pedal released
    		1.2 to 2.0 V
    Ignition switch ON,
    accelerator pedal fully depressed
    		3.4 to 5.3 V
    G89-26 (VCPA) - G89-20 (EPA)
    		LG-R - BR-W
    		Power source of accelerator pedal position sensor (for VPA)
    		Ignition switch ON
    		4.5 to 5.5 V
    G89-27 (VCP2) - G89-21 (EPA2)
    		BR-R - BR-Y
    		Power source of accelerator pedal position sensor (for VPA2)
    		Ignition switch ON
    		4.5 to 5.5 V
    C75-1 (HA1A) - C76-7 (E04)
    		Y - W-B
    		Air fuel ratio sensor heater
    		Idling with warm engine
    		Pulse generation
    (See waveform 2)
    C75-1 (HA1A) - C76-7 (E04)
    		Y - W-B
    		Air fuel ratio sensor heater
    		Ignition switch ON
    		11 to 14 V
    C75-21 (A1A+) - C75-3 (E1)
    		B -BR
    		Air fuel ratio sensor
    		Ignition switch ON
    		3.3 V*
    C75-31 (A1A-) - C75-3 (E1)
    		W - BR
    		Air fuel ratio sensor
    		Ignition switch ON
    		3.3 V*
    C75-2 (HT1B) - C76-4 (E03)
    		L-Y - W-B
    		Heated oxygen sensor heater
    		Idling
    		Below 3.0 V
    C75-2 (HT1B) - C76-4 (E03)
    		L-Y - W-B
    		Heated oxygen sensor heater
    		Ignition switch ON
    		11 to 14 V
    C75-25 (OX1B) - C75-28 (E2)
    		B - BR
    		Heated oxygen sensor
    		Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor
    		Pulse generation
    (See waveform 3)
    C76-6 (#10) - C75-7 (E01)
    		L - W-B
    		Fuel injector
    		Ignition switch ON
    		11 to 14 V
    Idling
    		Pulse generation
    (See waveform 4)
    C76-5 (#20) - C75-7 (E01)
    		G - W-B
    		Fuel injector
    		Ignition switch ON
    		11 to 14 V
    Idling
    		Pulse generation
    (See waveform 4)
    C76-2 (#30) - C75-7 (E01)
    		R - W-B
    		Fuel injector
    		Ignition switch ON
    		11 to 14 V
    Idling
    		Pulse generation
    (See waveform 4)
    C76-1 (#40) - C75-7 (E01)
    		W - W-B
    		Fuel injector
    		Ignition switch ON
    		11 to 14 V
    Idling
    		Pulse generation
    (See waveform 4)
    C75-29 (KNK1) - C75-30 (EKNK)
    		B - W
    		Knock sensor
    		Engine speed maintained at 4000 rpm after warming up engine
    		Pulse generation
    (See waveform 5)
    C75-26 (G2) - C75-34 (NE-)
    		R - G
    		Camshaft position sensor
    		Idling
    		Pulse generation
    (See waveform 6)
    C75-27 (NE+) - C75-34 (NE-)
    		L - G
    		Crankshaft position sensor
    		Idling
    		Pulse generation
    (See waveform 6)
    C75-17 (IGT1) - C75-3 (E1)
    		R - BR
    		Ignition coil (ignition signal)
    		Idling
    		Pulse generation
    (See waveform 7)
    C75-16 (IGT2) - C75-3 (E1)
    		R-L - BR
    		Ignition coil (ignition signal)
    		Idling
    		Pulse generation
    (See waveform 7)
    C75-15 (IGT3) - C75-3 (E1)
    		G-B - BR
    		Ignition coil (ignition signal)
    		Idling
    		Pulse generation
    (See waveform 7)
    C75-14 (IGT4) - C75-3 (E1)
    		G - BR
    		Ignition coil (ignition signal)
    		Idling
    		Pulse generation
    (See waveform 7)
    C75-23 (IGF1) - C75-3 (E1)
    		G-R - BR
    		Ignition coil (ignition confirmation signal)
    		Ignition switch ON
    		4.5 to 5.5 V
    Idling
    		Pulse generation
    (See waveform 7)
    C76-23 (PRG) - C75-3 (E1)
    		L - BR
    		Purge VSV
    		Ignition switch ON
    		11 to 14 V
    Idling, under purge control
    		Pulse generation
    (See waveform 8)
    G88-8 (SPD) - C75-3 (E1)
    		V-R - BR
    		Speed signal from combination meter
    		Driving at 20 km/h (12 mph)
    		Pulse generation
    (See waveform 9)
    G89-12 (STA) - C75-3 (E1)
    		L-Y - BR
    		Starter signal
    		Cranking
    		6.0 V or higher
    G88-4 (STP) - C75-3 (E1)
    		G-W - BR
    		Stop light switch
    		Brake pedal depressed
    		7.5 to 14 V
    Brake pedal released
    		Below 1.5 V
    G89-16 (ST1-) - C75-3 (E1)
    		R-L - BR
    		Stop light switch
    (opposite to voltage at STP terminal)
    		Ignition switch ON,
    brake pedal depressed
    		Below 1.5 V
    Ignition switch ON,
    brake pedal released
    		7.5 to 14 V
    C75-5 (M+) - C76-3 (ME01)
    		B - W-B
    		Throttle actuator
    		Idling with warm engine
    		Pulse generation
    (See waveform 10)
    C75-4 (M-) - C76-3 (ME01)
    		W - W-B
    		Throttle actuator
    		Idling with warm engine
    		Pulse generation
    (See waveform 11)
    G89-25 (FC) - C75-3 (E1)
    		LG-B - BR
    		Fuel pump control
    		Ignition switch ON
    		11 to 14 V
    G88-30 (W) - C75-3 (E1)
    		R-B - BR
    		MIL
    		Ignition switch ON
    		Below 3.0 V
    Idling
    		11 to 14 V
    G88-17 (TC) - C75-3 (E1)
    		P-B - BR
    		Terminal TC of DLC3
    		Ignition switch ON
    		11 to 14 V
    G88-1 (TACH) - C75-3 (E1)
    		B-W - BR
    		Engine speed
    		Idling
    		Pulse generation
    (See waveform 12)
    C75-10 (ALT) - C75-3 (E1)
    		G - BR
    		Generator
    		Ignition switch ON
    		11 to 14 V
    G89-15 (ELS) - C75-3 (E1)
    		G - BR
    		Electric load
    		Taillight switch on
    		7.5 to 14 V
    Taillight switch off
    		Below 1.5 V
    G88-3 (ELS3) - C75-3 (E1)
    		B - BR
    		Electric load
    		Defogger switch on
    		7.5 to 14 V
    Defogger switch off
    		Below 1.5 V
    G88-14 (THWO) - C75-3 (E1)
    		P - BR
    		Engine speed signal sent to combination meter
    		Idling with warm engine
    		Pulse generation
    C75-11 (AIRP) - C75-3 (E1)
    		W-L - BR
    		Air pump control
    		Ignition switch on
    		11 to 14 V
    C76-20 (AIDI) - C75-3 (E1)
    		G-W - BR
    		Diagnostic information signal for secondary air injection system
    		Secondary air injection system operating
    		Pulse generation (See waveform 13)
    C75-24 (AIRV) - C75-3 (E1)
    		V - BR
    		Air switching valve for secondary air injection system
    		Ignition switch on
    		11 to 14 V
    G88-32 (F/PS) - C75-3 (E1)
    		B - BR
    		Center airbag sensor assembly
    		Ignition switch on
    		Pulse generation
    C76-32 (PSW) - C75-3 (E1)
    		G-Y - BR
    		Power steering oil pressure switch
    		While turning steering wheel
    		Below 1.5 V
    1. *: The ECM terminal voltage is constant regardless of the output voltage from the sensor.


    2. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  2. Waveform 1:

    Camshaft Timing Oil Control Valve
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C75-13 (OC1+) - C75-12 (OC1-)
    		5 V/DIV., 1 msec./DIV.
    		Idling


    3. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  3. Waveform 2:

    Air Fuel Ratio Sensor Heater
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C75-1 (HA1A) - C76-7 (E04)
    		5 V/DIV., 10 msec./DIV.
    		Idling with warm engine
    HINT:
    The wavelength varies in accordance with the engine operating conditions.


    4. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  4. Waveform 3:

    Heated Oxygen Sensor
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C75-25 (OX1B) - C75-28 (E2)
    		0.2 V/DIV., 200 msec./DIV.
    		Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor
    HINT:
    In the Data List, item O2S B1 S2 shows the value from the heated oxygen sensor which is input to the ECM.


    5. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  5. Waveform 4:

    Fuel Injector No. 1 (to No. 4) Injection Signal
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C76-6 (#10) - C75-7 (E01)
    		20 V/DIV., 20 msec./DIV.
    		Idling
    C76-5 (#20) - C75-7 (E01)
    		20 V/DIV., 20 msec./DIV.
    		Idling
    C76-2 (#30) - C75-7 (E01)
    		20 V/DIV., 20 msec./DIV.
    		Idling
    C76-1 (#40) - C75-7 (E01)
    		20 V/DIV., 20 msec./DIV.
    		Idling
    HINT:
    The wavelength becomes shorter as the engine speed increases.


    6. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  6. Waveform 5:

    Knock Sensor
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C75-29 (KNK1) - C75-30 (EKNK)
    		1 V/DIV., 1 msec./DIV.
    		Engine speed maintained at 4000 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.


    7. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  7. Waveform 6:

    Crankshaft Position Sensor and Camshaft Position Sensor
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C75-27 (NE+) - C75-34 (NE-)
    		5 V/DIV., 20 msec./DIV.
    		Idling after engine warmed up
    C75-26 (G2) - C75-34 (NE-)
    		5 V/DIV., 20 msec./DIV.
    		Idling after engine warmed up
    HINT:
    The wavelength becomes shorter as the engine speed increases.


    8. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  8. Waveform 7:

    Igniter IGT Signal (from ECM to Igniter) and Igniter IGF Signal (from Igniter to ECM)
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    (a) C75-17 (IGT1) - C75-3 (E1)
    		2 V/DIV., 20 msec./DIV.
    		Idling
    (a) C75-16 (IGT2) - C75-3 (E1)
    		2 V/DIV., 20 msec./DIV.
    		Idling
    (a) C75-15 (IGT3) - C75-3 (E1)
    		2 V/DIV., 20 msec./DIV.
    		Idling
    (a) C75-14 (IGT4) - C75-3 (E1)
    		2 V/DIV., 20 msec./DIV.
    		Idling
    (b) C75-23 (IGF1) - C75-3 (E1)
    		2 V/DIV., 20 msec./DIV.
    		Idling
    HINT:
    The wavelength becomes shorter as the engine speed increases.


    9. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  9. Waveform 8:

    Purge VSV
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C76-23 (PRG) - C75-3 (E1)
    		10 V/DIV., 20 msec./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.


    10. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  10. Waveform 9:

    Vehicle Speed Signal
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    G88-8 (SPD) - C75-3 (E1)
    		2 V/DIV., 20 msec./DIV.
    		Driving at 20 km/h (12 mph)
    HINT:
    The wavelength becomes shorter as the vehicle speed increases.


    11. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  11. Waveform 10:

    Throttle Actuator Positive Terminal
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C75-5 (M+) - C76-3 (ME01)
    		5 V/DIV., 1 msec./DIV.
    		Idling with warm engine
    HINT:
    The duty ratio varies depending on the throttle actuator operation.


    12. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  12. Waveform 11:

    Throttle Actuator Negative Terminal
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C75-4 (M-) - C76-3 (ME01)
    		5 V/DIV., 1 msec./DIV.
    		Idling with warm engine
    HINT:
    The duty ratio varies depending on the throttle actuator operation.


    13. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  13. Waveform 12:

    Engine Speed Signal
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    G88-1 (TACH) - C75-3 (E1)
    		5 V/DIV., 10 msec./DIV.
    		Idling
    HINT:
    The wavelength becomes shorter as the engine speed increases.


    14. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Terminals Of Ecm

  14. Waveform 13:

    Terminal DI of Air Injection Control Driver
    Terminal No. (Symbol)
    		Tool Setting
    		Condition
    C76-20 (AIDI) - C75-3 (E1)
    		5 V/DIV., 50 msec./DIV.
    		Performing system check using intelligent tester (secondary air injection check)
    HINT:
    The wavelength changes when the air injection control driver detects malfunctions in the secondary air injection system (HILUX_TGN26 RM0000012FY032X.html).