Terminals of ecm

 

CHECK ECM

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30



 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30


 

ECD SYSTEM > System description 2AD-FHV Terminals of ecm TOYOTA RAV4 / ACA30, 33, 38 ALA30
  1. Measure the voltage of the ECM connector.

    HINT:

    Each ECM terminal's standard voltage is shown in the table below.
    In the table, first follow the information in "Condition". Look at "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 ColorTerminal DescriptionConditionSpecified Condition
    BATT (A12-2) - E1 (B32-109)W - BRBattery (for measuring the battery voltage and for the ECM memory)Always9 to 14 V
    IGSW (A12-25) - E1 (B32-109)B - BRIgnition switchIgnition switch on (IG)9 to 14 V
    +B (A12-1) - E1 (B32-109)B - BRPower source of ECMIgnition switch on (IG)9 to 14 V
    MREL (A12-45) - E1 (B32-109)O - BREFI MAIN relayIgnition switch on (IG)9 to 14 V
    MREL (A12-45) - E1 (B32-109)O - BREFI MAIN relay2 seconds elapsed after ignition switch off0 to 1.5 V
    IREL (A12-44) - E1 (B32-109)R - BREDU relayignition switch off9 to 14 V
    IREL (A12-44) - E1 (B32-109)R - BREDU relayIdling0 to 1.5 V
    GREL (B32-56) - E1 (B32-109)L - BRGlow plug relayCranking9 to 14 V
    GREL (B32-56) - E1 (B32-109)L - BRGlow plug relayIdling (Engine start after 10 minutes or more)0 to 1.5 V
    VPA (A12-53) - EPA (A12-57)W - YAccelerator pedal position sensor (for engine control)Ignition switch on (IG), accelerator pedal fully released0.5 to 1.1 V
    VPA (A12-53) - EPA (A12-57)W - YAccelerator pedal position sensor (for engine control)Ignition switch on (IG), accelerator pedal fully depressed3.0 to 4.6 V
    VPA2 (A12-54) - EPA2 (A12-58)R - OAccelerator pedal position sensor (for sensor malfunction detection)Ignition switch on (IG), accelerator pedal fully released0.9 to 2.3 V
    VPA2 (A12-54) - EPA2 (A12-58)R - OAccelerator pedal position sensor (for sensor malfunction detection)Ignition switch on (IG), accelerator pedal fully depressed3.4 to 5.0 V
    VCPA (A12-55) - EPA (A12-57)B - YPower source of accelerator pedal position sensor (for VPA1)Ignition switch on (IG)4.5 to 5.5 V
    VCP2 (A12-56) - EPA2 (A12-58)L - OPower source of accelerator pedal position sensor (for VPA2)Ignition switch on (IG)4.5 to 5.5 V
    STAR (B32-53)* - E1 (B32-109)W - BRST relay controlCranking9 to 14 V
    STA (A12-43) - E1 (B32-109)LG - BRStarter signalCranking6.0 V or more
    INJF (B32-51) - E1 (B32-109)P - BREDUIdlingPulse generation
    (see waveform 3)
    #1 (B32-50) - E1 (B32-109)
    #2 (B32-49) - E1 (B32-109)
    #3 (B32-48) - E1 (B32-109)
    #4 (B32-47) - E1 (B32-109)
    GR - BR
    G - BR
    LG - BR
    L - BR
    InjectorIdlingPulse generation
    (see waveform 2)
    PRD (B32-52) - E1 (B32-109)B - BRPressure relief valve drive signalIgnition switch off4 to 5.5 V
    IDLO (B32-62) - E1 (B32-109)Y - BREDUIdling4 to 5.5 V
    NE+ (B32-78) - NE- (B32-77)B - WCrankshaft position sensorIdlingPulse generation
    (see waveform 4)
    G+ (B32-80) - G- (B32-79)R - GCamshaft position sensorIdlingPulse generation
    (see waveform 4)
    STP (A12-35) - E1 (B32-109)L - BRNormally open switchIgnition switch on (IG), brake pedal depressed7.5 to 14 V
    STP (A12-35) - E1 (B32-109)L - BRNormally open switchIgnition switch on (IG), brake pedal released0 to 1.5 V
    ST1- (A12-34) - E1 (B32-109)GR - BRNormally closed switchIgnition switch on (IG), brake pedal depressed0 to 1.5 V
    ST1- (A12-34) - E1 (B32-109)GR - BRNormally closed switchIgnition switch on (IG), brake pedal released7.5 to 14 V
    TC (A12-26) - E1 (B32-109)G - BRTerminal TC of DLC3Ignition switch on (IG)9 to 14 V
    W (A12-12) - E1 (B32-109)R - BRMILMIL illuminated0 to 3 V
    W (A12-12) - E1 (B32-109)R - BRMILMIL not illuminated9 to 14 V
    SPD (A12-14) - E1 (B32-109)V - BRSpeed signal from combination meterIgnition switch on (IG), drive wheels are rotating slowlyPulse generation
    (see waveform 7)
    PIM (B32-117) - EPIM (B32-94)G - BRManifold absolute pressure sensorApply negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg)0.3 to 0.9 V
    PIM (B32-117) - EPIM (B32-94)G - BRManifold absolute pressure sensorSame as atmospheric pressure0.8 to 1.4 V
    PIM (B32-117) - EPIM (B32-94)G - BRManifold absolute pressure sensorApply positive pressure of 69 kPa (518 mmHg, 20.3 in.Hg)1.6 to 2.2 V
    TACH (A12-13) - E1 (B32-109)GR - BREngine speedIdlingPulse generation
    (see waveform 8)
    VCS (B32-68) - E2S (B32-66)R - BRCommon rail pressure sensorIgnition switch on (IG)4.5 to 5.5 V
    PCR1 (B32-67) - E2M (B32-91)P - BRCommon rail pressure sensor (main)Idling1.8 to 2.1 V
    PCR2 (B32-114) - E2S (B32-66)W - BRCommon rail pressure sensor (sub)Idling1.2 to 1.5 V
    ALT (B32-54) - E1 (B32-109)B - BRGenerator duty ratioIdlingPulse generation
    (see waveform 9)
    PCV+ (B32-42) - PCV- (B32-41)LG - RSuction control valveIdlingPulse generation
    (see waveform 1)
    VN (B32-84) - E1 (B32-109)Y - BRVRV (for VN turbocharger)Ignition switch on (IG)Pulse generation
    (see waveform 5)
    FIV (B32-105) - E1 (B32-109)GR - BRExhaust fuel addition injectorEngine warmed up, idling, every 1 to 2 minutesPulse generation
    VLU (B32-119) - EVLU (B32-96)G - BRThrottle position sensorIgnition switch on (IG), throttle valve fully opened2.8 to 3.8 V
    LUSL (B32-86) - E1 (B32-109)V - BRThrottle valve duty signalEngine warmed up, engine racingPulse generation
    (see waveform 6)
    EGLS (B32-118) - EEGL (B32-95)GR - BREGR valve position sensorIgnition switch on (IG)0.6 to 1.4 V
    EGRS (B32-85) - E1 (B32-109)W - BREGREngine warmed up, idlingPulse generation
    (see waveform 10)
    THCO (B32-121) - ETCO (B32-98)P - BRExhaust gas temperature sensorEngine warmed up, idling4.6 to 4.9 V
    THCI (B32-122) - ETCI (B32-99)L - BRExhaust gas temperature sensorEngine warmed up, idling4.6 to 4.9 V
    THIA (B32-113) - ETHI (B32-90)Y - BRIntake air temperature sensor (Intake manifold)Idling, intake air temperature at 0 to 80°C (32 to 176°F)0.5 to 3.4 V
    THF (B32-112) - ETHF (B32-89)GR - BRFuel temperature sensorIgnition switch on (IG)0.5 to 3.4 V
    THW (B32-111) - ETHW (B32-88)B - BRECT sensorIdling, engine coolant temperature at 60 to 120°C (140 to 248°F)0.2 to 1.0 V
    PEX (B32-120) - EPEX (B32-97)P - BRDifferential pressure sensorIgnition switch on (IG)0.4 to 4.8 V
    HAF2 (B32-104) - E05 (B32-46)L - W-BA/F sensor heaterIgnition switch on (IG)9 to 14 V
    AF2+ (B32-103) - E1 (B32-109)L - BRA/F sensorIgnition switch on (IG)2.0 to 2.5 V
    AF2- (B32-126) - E1 (B32-109)Y - BRA/F sensorIgnition switch on (IG)2.0 to 2.5 V
    VG (B32-65) - EVG (B32-64)LG - WMAF meter power sourceEngine idling0.5 to 3.4 V
    THA (B32-110) - ETHA (B32-87)L - BRIAT sensorIdling, intake air temperature at 0 to 80°C (32 to 176°F)0.5 to 3.4 V
    FANL (A12-22) - E1 (B32-109)R - BRFAN NO. 3 relayIgnition switch on (IG)9 to 14 V
    FANL (A12-22) - E1 (B32-109)R - BRFAN NO. 3 relayIdling with A/C ON
    or
    High engine coolant temperature
    Below 1.5 V
    FANH (A12-21) - E1 (B32-109)W - BRFAN NO. 1, 2 relayIdling with high engine coolant temperatureBelow 1.5 V
    ACCR (A12-24)* - E1 (B32-109)LG - BRAccessory power cut signalIgnition switch on (IG) → CrankingBelow 1.5 V
    STSW (A12-9)* - E1 (B32-109)R - BREngine cranking required signalIgnition switch on (IG) → CrankingBelow 1 V → 9 to 14 V momentary
    VCIB (B32-70) - EIB (B32-93)R - BRBattery current sensorIgnition switch on (IG)4.5 to 5.0 V
    IB (B32-116) - EIB (B32-93)B - BRBattery current sensorIgnition switch on (IG)0.5 to 4.5 V
    THB (B32-115) - EIB (B32-93)LG - BRBattery current sensorIgnition switch on (IG)0.5 to 4.5 V
    CANH (A12-38) - E1 (B32-109)Y - BRCAN communication lineIgnition switch on (IG)Pulse generation
    (see waveform 11)
    CANL (A12-46) - E1 (B32-109)W - BRCAN communication lineIgnition switch on (IG)Pulse generation
    (see waveform 12)

    HINT:

    *: w/ Entry and start system.
  2. Using an oscilloscope, check the waveform 1.

    Waveform 1:
    Suction control valve signal
    ItemContent
    Symbols (Terminal No.)PCV+ (B32-42) - PCV- (B32-41)
    Tool Setting10 V/DIV., 5 msec./DIV.
    ConditionIdling or cranking with warm engine
    HINT:
    The waveform varies depending on the suction control valve operation.
  3. Using an oscilloscope, check the waveform 2.

     

    Waveform 2:
    No. 1 injector injection signal
    No. 2 injector injection signal
    No. 3 injector injection signal
    No. 4 injector injection signal
    ItemContent
    Symbols (Terminal No.)(a) #1 (B32-50) - E1 (B32-109)
    (b) #3 (B32-49) - E1 (B32-109)
    (c) #4 (B32-48) - E1 (B32-109)
    (d) #2 (B32-47) - E1 (B32-109)
    Tool Setting5 V/DIV., 20 msec./DIV.
    ConditionIdling with warm engine

    HINT:

    The waveform varies depending on the injector injection.
  4. Using an oscilloscope, check the waveform 3.

    Waveform 3:
    Injector injection confirmation signal
    ItemContent
    Symbols (Terminal No.)INJF (B32-51) - E1 (B32-109)
    Tool Setting2 V/DIV., 20 msec./DIV.
    ConditionIdling with warm engine
    HINT:
    The waveform varies depending on the injector injection.
  5. Using an oscilloscope, check the waveform 4.

    Waveform 4:
    Crankshaft position sensor signal
    Camshaft position sensor signal
    ItemContent
    Symbols (Terminal No.)(a) NE+ (B32-78) - NE- (B32-77)
    (b) G+ (B32-80) - G- (B32-79)
    Tool Setting5 V/DIV., 20 msec./DIV.
    ConditionIdling with warm engine
    HINT:
    The waveform varies depending on the engine revolution.
  6. Using an oscilloscope, check the waveform 5.

    Waveform 5:
    VRV for turbocharger control signal
    ItemContent
    Symbols (Terminal No.)VN (B32-84) - E1 (B32-109)
    Tool Setting5 V/DIV., 1 msec./DIV.
    ConditionIdling with warm engine
    HINT:
    The waveform changes depending on the electric vacuum regulating valve for turbocharger operation.
  7. Using an oscilloscope, check the waveform 6.

    Waveform 6:
    Diesel throttle signal
    ItemContent
    Symbols (Terminal No.)LUSL (B32-86) - E1 (B32-109)
    Tool Setting1 V/DIV., 2 msec./DIV.
    ConditionWarm engine with engine racing
    HINT:
    The waveform varies depending on the throttle valve operation.
  8. Using an oscilloscope, check the waveform 7.

    Waveform 7:
    Vehicle speed signal
    ItemContent
    Symbols (Terminal No.)SPD (A12-14) - E1 (B32-109)
    Tool Setting5 V/DIV., 20 msec./DIV.
    ConditionDriving the vehicle
    HINT:
    The wavelength becomes shorter as the vehicle speed increases.
  9. Using an oscilloscope, check the waveform 8.

    Waveform 8:
    Engine speed signal
    ItemContent
    Symbols (Terminal No.)TACH (A12-13) - E1 (B32-109)
    Tool Setting5 V/DIV., 20 msec./DIV.
    ConditionIdling with warm engine
    HINT:
    The wavelength becomes shorter as the engine speed increases.
  10. Using an oscilloscope, check the waveform 9.

    Waveform 9:
    Generator signal
    ItemContent
    Symbols (Terminal No.)ALT (B32-54) - E1 (B32-109)
    Tool Setting5 V/DIV., 5 msec./DIV.
    ConditionIdling
  11. Using an oscilloscope, check the waveform 10.

    Waveform 10:
    EGR position sensor signal
    ItemContent
    Symbols (Terminal No.)EGRS (B32-85) - EEGL (B32-95)
    Tool Setting5 V/DIV., 5 msec./DIV.
    ConditionIdling
  12. Using an oscilloscope, check the waveform 11.

    Waveform 11:
    CAN communication signal
    ItemContent
    Symbols (Terminal No.)CANH (A12-38) - E1 (B32-109)
    Tool Setting1 V/DIV., 10 μsec./DIV.
    ConditionEngine stopped and ignition switch on (IG)
    HINT:
    The waveform varies depending on the CAN communication signal.
  13. Using an oscilloscope, check the waveform 12.

    Waveform 12:
    CAN communication signal
    ItemContent
    Symbols (Terminal No.)CANL (A12-46) - E1 (B32-109)
    Tool Setting1 V/DIV., 10 μsec./DIV.
    ConditionEngine stopped and ignition switch on (IG)
    HINT:
    The waveform varies depending on the CAN communication signal.