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Terminals Of ECM

WARNING: This page is about a different variant/trim than selected.
  1. CHECK ECM 
    Fig 1: Identifying ECM Terminals
    G06220515Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage according to the value(s) in the table below.

      HINT:

      The standard normal 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 normal 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 DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A27-1 (BATT) - D56-81 (E1) L-BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
      D56-41 (+BM) - D56-81 (E1) P-BR Power source of throttle actuator Always 11 to 14 V
      A27-28 (IGSW) - D56-81 (E1) LG-BR Ignition switch Ignition switch ON 11 to 14 V
      A27-3 (+B) - D56-81 (E1) GR-BR Power source of ECM Ignition switch ON 11 to 14 V
      A27-2 (+B2) - D56-81 (E1) GR-BR Power source of ECM Ignition switch ON 11 to 14 V
      D56-58 (OC1+) - D56-57 (OC1-) B - B-L Camshaft oil control valve (OCV) (for Intake Side of Bank 1) Idling Pulse generation (see  b waveform 1)
      D56-52 (OC2+) - D56-51 (OC2-) L-B - R-B Camshaft oil control valve (OCV) (for Intake Side of Bank 2) Idling Pulse generation (see  b waveform 1)
      D56-56 (OE1+) - D56-55 (OE1-) L-W - L-B Camshaft oil control valve (OCV) (for Exhaust Side of Bank D Idling Pulse generation (see  b waveform 1)
      D56-50 (OE2+) - D56-49 (OE2-) L-R - L Camshaft oil control valve (OCV) (for Exhaust Side of Bank 2) Idling Pulse generation (see  b waveform 1)
      A27-34 (MREL) - D56-81 (E1) W - BR EFI MAIN relay Ignition switch ON 11 to 14 V
      D56-74 (VG) - D56-75 (E2G) L-Y - G-W Mass air flow meter Idling, Shift lever in P or N, A/C switch OFF 0.5 to 3.0 V
      D56-73 (THA) - D56-97 (ETHW) Y-B - BR Intake air temperature sensor Idling, Intake air temperature 20°C (68°F) 0.5 to 3.4 V
      D56-76 (THW) - D56-98 (ETHA) G-B - BR Engine coolant temperature sensor Idling, Engine coolant temperature 80°C (176°F) 0.2 to 1.0 V
      D56-80 (VCTA) - D56-79 (ETA) Y - L Power source of throttle position sensor (specific voltage) Ignition switch ON 4.5 to 5.5 V
      D56-78 (VTA1) - D56-79 (ETA) R-Y - L Throttle position sensor (for engine control) Ignition switch ON, Throttle valve fully closed 0.5 to 1.2 V
      Ignition switch ON, Throttle valve fully open 3.2 to 4.8 V
      D56-77 (VTA2) - D56-79 (ETA) Y-B - L 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 4.5 to 5.5 V
      A27-55 (VPA) - A27-58 (EPA) W - BE 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
      A27-56 (VPA2) - A27-60 (EPA2) LG - BR Accelerator pedal position sensor (for sensor malfunctioning 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
      A27-57 (VCPA) - A27-58 (EPA) B - BE Power source of accelerator pedal position sensor (for VPA) Ignition switch ON 4.5 to 5.5 V
      A27-59 (VCP2) - A27-60 (EPA2) V - BR Power source of accelerator pedal position sensor (for VPA2) Ignition switch ON 4.5 to 5.5 V
      D56-22 (HA1A) - D56-23 (E04) L - W-B A/F sensor heater Idling with warm engine Pulse generation (see  c waveform 2)
      D56-20 (HA2A) - D56-21 (E05) G - W-B A/F sensor heater Ignition switch ON 11 to 14 V
      D56-126 (A1A+) - D56-81 (E1) G - BR A/F sensor Ignition switch ON 3.3 V*
      D56-125 (A1A-) - D56-81 (E1) R - BR A/F sensor Ignition switch ON 2.9 V*
      D56-103 (A2A+) - D56-81 (E1) P - BR A/F sensor Ignition switch ON 3.3 V*
      D56-102 (A2A-) - D56-81 (E1) L - BR A/F sensor Ignition switch ON 2.9 V*
      D56-45 (HT1B) - D56-46 (E03) G-B - W-B Heated oxygen sensor heater Idling Below 3.0 V
      D56-44 (HT2B) - D56-46 (E03) B - W-B Heated oxygen sensor heater Ignition switch ON 11 to 14 V
      D56-114 (OX1B) - D56-115 (EX1B) G - L Heated oxygen sensor Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor Pulse generation (see  d waveform 3)
      D56-112 (OX2B) - D56-113 (EX2B) R - W
      D56-86 (#10) - D56-43 (E01) R-L - W-B Injector Ignition switch ON 11 to 14 V
      D56-109 (#20) - D56-43 (E01) L - W-B Idling Pulse generation (see  e waveform 4)
      D56-85 (#30) - D56-43 (E01) R - W-B
      D56-108 (#40) - D56-43 (E01) Y - W-B
      D56-84 (#50) - D56-43 (E01) G - W-B
      D56-107 (#60) - D56-43 (E01) R - W-B
      D56-83 (#70) - D56-43 (E01) W - W-B
      D56-106 (#80) - D56-43 (E01) R-B - W-B
      D56-94 (KNK1) - D56-93 (EKNK) R - G Knock sensor Engine speed maintained at 4000 RPM after warming up engine Pulse generation (see  f waveform 5)
      D56-117 (KNK2) - D56-116 (EKN2) W - B
      D56-96 (KNK3) - D56-95 (EKN3) W - B
      D56-119 (KNK4) - D56-118 (EKN4) R - G
      D56-92 (VV1+) - D56-91 (VV1-) R - G Variable valve timing (VVT) sensor (for Intake Side of Bank 1) Idling Pulse generation (see  g waveform 6)
      D56-87 (VV2+) - D56-88 (VV2-) R - Y Variable valve timing (VVT) sensor (for Intake Side for Bank 2) Idling Pulse generation (see  g waveform 6)
      D56-69 (EV1+) - D56-68 (EV1-) R - L-B Variable valve timing (VVT) sensor (for Exhaust Side of Bank 1) Idling Pulse generation (see  r waveform 17)
      D56-64 (EV2+) - D56-65 (EV2-) R-L - B Variable valve timing (VVT) sensor (for Exhaust Side of Bank 2) Idling Pulse generation (see  r waveform 17)
      D56-110 (NE+) - D56-111 (NE-) W - Y Crankshaft position sensor Idling Pulse generation (see  g waveform 6)
      D56-40 (IGT1) - D56-81 (E1) B-Y - BR Ignition coil (ignition signal) Idling Pulse generation (see  h waveform 7)
      D56-33 (IGT2) - D56-81 (E1) L-Y - BR
      D56-37 (IGT3) - D56-81 (E1) B - BR
      D56-34 (IGT4) - D56-81 (E1) L-B - BR
      D56-35 (IGT5) - D56-81 (E1) G-R - BR
      D56-36 (IGT6) - D56-81 (E1) G - BR
      D56-38 (IGT7) - D56-81 (E1) G-W - BR
      D56-39 (IGT8) - D56-81 (E1) G-B - BR
      D56-104 (IGF1) - D56-81 (E1) G-B - BR Ignition coil (ignition confirmation signal) Ignition switch ON 4.5 to 5.5 V
      Idling Pulse generation (see  h waveform 7)
      D56-105 (IGF2) - D56-81 (E1) R - BR Ignition coil (ignition confirmation signal) Ignition switch ON 4.5 to 5.5 V
      Idling Pulse generation (see  h waveform 7)
      D56-63 (PRG) - D56-81 (E1) L-B - BR Purge VSV Ignition switch ON 11 to 14 V
      Idling Pulse generation (see  i waveform 8)
      A27-13 (SPD) - D56-81 (E1) B - BR Speed signal from combination meter Driving at 20 km/h (12 mph) Pulse generation (see  j waveform 9)
      A27-46 (STA) - D56-81 (E1) R - BR Starter signal Cranking 5.5 V or more
      D56-120 (NSW) - D56-81 (E1) L - BR Park/neutral position switch Ignition switch ON, Shift lever position other than P or N 11 to 14 V
      Ignition switch ON, Shift lever in P or N Below 3.0 V
      A27-26 (STP) - D56-81 (E1) LG - BR Stop light switch Brake pedal depressed 7.5 to 14 V
      Brake pedal released Below 1.5 V
      A27-35 (ST1-) - D56-81 (E1) R - BR Stop light switch (opposite to STP terminal) Ignition switch ON, Brake pedal depressed Below 1.5 V
      Ignition switch ON, Brake pedal released 7.5 to 14 V
      D56-19 (M+) - D56-82 (ME01) R - W-B Throttle actuator Idling with warm engine Pulse generation (see  k waveform 10)
      D56-18 (M-) - D56-82 (ME01) G - W-B Throttle actuator Idling with warm engine Pulse generation (see  l waveform 11)
      A27-48 (FC) - D56-81 (E1) L - BR Fuel pump control Ignition switch ON 11 to 14 V
      A27-52 (FPC) - D56-81 (E1) BE - BR Fuel pump control Ignition switch ON Below 1.5 V
      A27-24 (W) - D56-81 (E1) P - BR MIL Ignition switch ON Below 3.0 V
      Idling 11 to 14 V
      A27-16 (TC) - D56-81 (E1) R - BR Terminal TC of DLC3 Ignition switch ON 11 to 14 V
      A27-15 (TACH) - D56-81 (E1) W - BR Engine speed Idling Pulse generation (see  m waveform 12)
      A27-30 (VPMP) - D56-81 (E1) V - BR Vent valve (built into canister pump module) Ignition switch ON 11 to 14 V
      A27-49 (MPMP) - D56-81 (E1) G - BR Leak detection pump (built into canister pump module) Leak detection pump OFF Below 3.0 V
      Leak detection pump ON 11 to 14 V
      D56-67 (VCV1) - D56-97 (ETHW) L - BR Power source for sensor (specific voltage) Ignition switch ON 4.5 to 5.5 V
      D56-66 (VCV2) - D56-97 (ETHW) L - BR Power source for sensor (specific voltage) Ignition switch ON 4.5 to 5.5 V
      D56-121 (PPMP) - D56-97 (ETHW) P - BR Canister pressure sensor (built into canister pump module) Ignition switch ON 3.3 to 4.0 V
      D56-32 (ALT) - D56-81 (E1) R - BR Generator Ignition switch ON 11 to 14 V
      A27-10 (CANH) - D56-81 (E1) GR - BR CAN communication line Ignition switch ON Pulse generation (see  n waveform 13)
      A27-11 (CANL) - D56-81 (E1) W - BR CAN communication line Ignition switch ON Pulse generation (see  o waveform 14)
      D56-62 (ACIS) - D56-81 (E1) L-Y - BR VSV for ACIS (Acoustic Control Induction System) operation signal Ignition switch ON 11 to 14 V
      D56-28 (AIRV) - D56-81 (E1) BR - BR Air switching valve for secondary air injection system Ignition switch ON 11 to 14 V
      D56-54 (AIRP) - D56-81 (E1) P - BR Air pump control Ignition switch ON 11 to 14 V
      D56-30 (AIDI) - D56-81 (E1) G - BR Diagnostic information signal for air injection system Air injection system operates Pulse generation (see  q waveform 16)
      A27-54 (AIP) - D56-98 (ETHA) Y - BR Secondary air injection system pressure signal Ignition switch ON 3.0 to 3.6 V
      A27-43 (ARV2) - D56-81 (E1) V - BR Air switching valve for secondary air injection system Ignition switch ON 11 to 14 V
      D56-53 (ARP2) - D56-81 (E1) P-L - BR Air pump control Ignition switch ON 11 to 14 V
      D56-29 (AID2) - D56-81 (E1) G-Y - BR Diagnostic information signal for air injection system Air injection system operates Pulse generation (see  q waveform 16)
      A27-53 (AIP2) - D56-97 (ETHW) G - BR Secondary air injection system pressure signal Ignition switch ON 3.0 to 3.6 V
      D56-90 (G2) - D56- 89 (G2-) R - B Camshaft position sensor Idling Pulse generation (see  p waveform 15)
      A27-18 (DI) - D56-81 (E1) Y - BR Fuel pump control Ignition switch ON 0 to 3.0 V
      A27-14 (STSW) - D56-81 (E1) BR - BR Starter switch Shift lever in P or N, Cranking 6.0 V or more
      A27-41 (ACCR) - D56-81 (E1) BR - BR ACC relay control signal Ignition switch ON → Cranking 11 to 14 V → Below 1 V
      D56-16 (STAR) - D56-81 (E1) L - BR Starter relay control Ignition switch ON Below 1.5 V
      Cranking 5.5 V or more
      D56-72 (PSP) - D56-81 (E1) G - BR Power steering oil pressure sensor Ignition switch ON 0.5 to 4.5 V
      HINT:
      *: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
    2. WAVEFORM 1:

      Camshaft Oil Control Valve (OCV) 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      D56-58 (OC1+) - D56-57 (OC1-) 5 V/DIV., 1 msec./DIV. Idling
      D56-52 (OC2+) - D56-51 (OC2-) 5 V/DIV., 1 msec./DIV. Idling
      D56-56 (OE1+) - D56-55 (OE1-) 5 V/DIV., 1 msec./DIV. Idling
      D56-50 (OE2+) - D56-49 (OE2-) 5 V/DIV., 1 msec./DIV. Idling
      Fig 2: Waveform 1
      G06220516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. WAVEFORM 2:

      Air Fuel Ratio Sensor Heater 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      CH1: D56-22 (HA1A) - D56-23 (E04) 5 V/DIV., 10 msec./DIV. Idle with warm engine
      CH2: D56-20 (HA2A) - D56-21 (E05) 5 V/DIV., 10 msec./DIV. Idle with warm engine
      Fig 3: Waveform 2
      G06220517Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength varies in accordance with the engine operating condition.

    4. WAVEFORM 3:

      Heated Oxygen Sensor 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      D56-114 (OX1B) - D56-115 (EX1B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor
      D56-112 (OX2B) - D56-113 (EX2B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor
      Fig 4: Waveform 3
      G06220518Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      In Data List, item O2S B1 S2 shows the ECM input values from the heated oxygen sensor.

    5. WAVEFORM 4:

      Injector No. 1 (to No. 8) Injection Signal 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      D56-86 (#10) - D56-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D56-109 (#20) - D56-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D56-85 (#30) - D56-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D56-108 (#40) - D56-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D56-84 (#50) - D56-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D56-107 (#60) - D56-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D56-83 (#70) - D56-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D56-106 (#80) - D56-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      Fig 5: Waveform 4
      G06220519Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the engine RPM increases.

    6. WAVEFORM 5:

      Knock Sensor 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      D56-94 (KNK1) - D56-93 (EKNK) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      D56-117 (KNK2) - D56-116 (EKN2) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      D56-96 (KNK3) - D56-95 (EKN3) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      D56-119 (KNK4) - D56-118 (EKN4) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      Fig 6: Waveform 5
      G06220520Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • The wavelength becomes shorter as the engine RPM increases.
      • The waveforms and amplitudes displayed differ slightly depending on the vehicle.
    7. WAVEFORM 6:

      Crankshaft Position Sensor and VVT Sensor for Intake Side 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      (a) D56-110 (NE+) - D56-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (b) D56-92 (VV1+) - D56-91 (VV1-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (c) D56-87 (VV2+) - D56-88 (VV2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      Fig 7: Waveform 6
      G06220521Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as engine RPM increases.

    8. WAVEFORM 7:

      Igniter IGT Signal (from ECM to Igniter) and Igniter IGF Signal (from Igniter to ECM) 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      (a) D56-40 (IGT1) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D56-33 (IGT2) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D56-37 (IGT3) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D56-34 (IGT4) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D56-35 (IGT5) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D56-36 (IGT6) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D56-38 (IGT7) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D56-39 (IGT8) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (b) D56-104 (IGF1) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (b) D56-105 (IGF2) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      Fig 8: Waveform 7
      G06220522Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as engine RPM increases.

    9. WAVEFORM 8:

      Purge VSV 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      D56-63 (PRG) - D56-81 (E1) 10 V/DIV., 10 to 100 msec./DIV. Idling
      Fig 9: Waveform 8
      G06220523Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

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

    10. WAVEFORM 9:

      Vehicle Speed Signal 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      A27-13 (SPD) - D56-81 (E1) 2 V/DIV., 20 msec./DIV. Driving at 20 km/h (12 mph)
      Fig 10: Waveform 9
      G06220524Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the vehicle speed increases.

    11. WAVEFORM 10:

      Throttle Actuator Positive Terminal 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      D56-19 (M+) - D56-82 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine
      Fig 11: Waveform 10
      G06220525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The duty ratio varies depending on the throttle actuator operation.

    12. WAVEFORM 11:

      Throttle Actuator Negative Terminal 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      D56-18 (M-) - D56-82 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine
      Fig 12: Waveform 11
      G06220526Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The duty ratio varies depending on the throttle actuator operation.

    13. WAVEFORM 12:

      Engine Speed Signal 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      A27-15 (TACH) - D56-81 (E1) 5 V/DIV., 10 msec./DIV. Idling
      Fig 13: Waveform 12
      G06220527Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the engine RPM increases.

    14. WAVEFORM 13:

      CAN Communication Signal (Reference) 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      A27-10 (CANH) - D56-81 (E1) 1 V/DIV., 10 μsec./DIV. Engine stops and ignition switch ON
      Fig 14: Waveform 13
      G06220528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The waveform varies depending on the CAN communication signal.

    15. WAVEFORM 14:

      CAN Communication Signal (Reference) 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      A27-11 (CANL) - D56-81 (E1) 1 V/DIV., 10 μsec./DIV. Engine stops and ignition switch ON
      Fig 15: Waveform 14
      G06220529Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The waveform varies depending on the CAN communication signal.

    16. WAVEFORM 15:

      Crankshaft Position Sensor and Camshaft Position Sensor 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      CH1: D56-110 (NE+) - D56-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      CH2: D56-90 (G2) - D56-89 (G2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      Fig 16: Waveform 15
      G06220530Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the engine RPM increases.

    17. WAVEFORM 16:

      Terminal Dl of Air Injection Control Driver 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      D56-30 (AIDI) - D56-81 (E1) 5 V/DIV., 20 to 40 msec./DIV. Performing system check using Techstream (air injection check)
      D56-29 (AID2) - D56-81 (E1) 5 V/DIV., 20 to 40 msec./DIV. Performing system check using Techstream (air injection check)
      Fig 17: Waveform 16
      G06220531Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength changes when the air injection control driver detects malfunctions in the air injection system (See DTC P0412 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE "A" CIRCUIT; DTC P0415 SECONDARY AIR INJECTION SYSTEM SWITCHING VALVE "B" CIRCUIT ).

    18. WAVEFORM 17:

      Crankshaft Position Sensor and VVT Sensor for Exhaust Side 

      WAVEFORM REFERENCE CHART

      Terminal No. (Symbol) Tool Setting Condition
      (a) D56-110 (NE+) - D56-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (b) D56-69 (EV1+) - D56-68 (EV1-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (c) D56-64 (EV2+) - D56-65 (EV2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      Fig 18: Waveform 17
      G06220532Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as engine RPM increases.

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