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Terminals Of ECM

  1. CHECK ECM 
    Fig 1: Identifying ECM Connector Terminal
    G06067416Courtesy 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.

      VOLTAGE SPECIFICATION

      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 waveform 1  b)
      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 waveform 1  b)
      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 waveform 1  b)
      D56-50 (OE2+) - D56-49 (OE2-) L-R - L Camshaft oil control valve (OCV) (for Exhaust Side of Bank 2) Idling Pulse generation (see waveform 1  b)
      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 waveform 1  c)
      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 (El) 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 waveform 1  d)
      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 waveform 1  e)
      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 waveform 1  f)
      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 waveform 1  g)
      D56-87 (VV2+) - D56-88 (VV2-) R - Y Variable valve timing (VVT) sensor (for Intake Side for Bank 2) Idling Pulse generation (see waveform 1  g)
      D56-69 (EV1+) - D56-68 (EV1-) R-L - B Variable valve timing (VVT) sensor (for Exhaust Side of Bank 1) Idling Pulse generation (see waveform 1  r)
      D56-64 (EV2+) - D56-65 (EV2-) R-L - B Variable valve timing (VVT) sensor (for Exhaust Side of Bank 2) Idling Pulse generation (see waveform 1  r)
      D56-110 (NE+) - D56-111 (NE-) W - Y Crankshaft position sensor Idling Pulse generation (see waveform 1  g)
      D56-40 (IGT1) - D56-81 (E1) B-Y - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 1  h)
      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 waveform 1  h)
      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 waveform 1  h)
      D56-63 (PRG) - D56-81 (E1) L-B - BR Purge VSV Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 1  i)
      A27-13 (SPD) - D56-81 (E1) B - BR Speed signal from combination meter Driving at 20 km/h (12 mph) Pulse generation (see waveform 1  j)
      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 waveform 1  k)
      D56-18 (M-) - D56-82 (ME01) G - W-B Throttle actuator Idling with warm engine Pulse generation (see waveform 1  l)
      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 waveform 1  m)
      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 waveform 1  n)
      A27-11 (CANL) - D56-81 (E1) W - BR CAN communication line Ignition switch ON Pulse generation (see waveform 1  o)
      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 waveform 1  q)
      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 waveform 1  q)
      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 waveform 1  p)
      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
      D56-60 (FPCR) - D56-81 (E1) R - BR Fuel pressure switching valve Fuel pressure switching valve OFF 11 to 14 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

      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-) 5V/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: Identifying Waveform 1
      G06067417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. WAVEFORM 2:

      Air Fuel Ratio Sensor Heater 

      WAVEFORM REFERENCE

      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: Identifying Waveform 2
      G06067418Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength varies in accordance with the engine operating condition.

    4. WAVEFORM 3:

      Heated Oxygen Sensor 

      WAVEFORM REFERENCE

      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: Identifying Waveform 3
      G06067419Courtesy 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

      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 (#30) - D56-43 (E01) 20 V/DIV, 20 msec./DIV. Idling
      Fig 5: Identifying Waveform 4
      G06067420Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the engine speed increases.

    6. WAVEFORM 5:

      Knock Sensor 

      WAVEFORM REFERENCE

      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: Identifying Waveform 5
      G06067421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      • The wavelength becomes shorter as the engine speed 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

      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: Identifying Waveform 6
      G06067422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as engine speed increases.

    8. WAVEFORM 7:

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

      Fig 8: Identifying Waveform 7
      G06067423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM REFERENCE

      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

      HINT:

      The wavelength becomes shorter as engine speed increases.

    9. WAVEFORM 8:

      Purge VSV 

      WAVEFORM REFERENCE

      Terminal No. (Symbol) Tool Setting Condition
      D56-63 (PRG) - 056-81 (E1) 10 V/DIV., 10 to 100 msec./DIV. Idling
      Fig 9: Identifying Waveform 8
      G06067424Courtesy 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

      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: Identifying Waveform 9
      G06067425Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the vehicle speed increases.

    11. WAVEFORM 10:

      Throttle Actuator Positive Terminal 

      WAVEFORM REFERENCE

      Terminal No. (Symbol) Tool Setting Condition
      D56-19 (M+) - D56-82 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine
      Fig 11: Identifying Waveform 10
      G06067426Courtesy 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

      Terminal No. (Symbol) Tool Setting Condition
      D56-18 (M-) - D56-82 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine
      Fig 12: Identifying Waveform 11
      G06067427Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The duty ratio varies depending on the throttle actuator operation.

    13. WAVEFORM 12:

      Engine Speed Signal 

      WAVEFORM REFERENCE

      Terminal No. (Symbol) Tool Setting Condition
      A27-15 (TACH) - D56-81 (E1) 5 V/DIV., 10msec./DIV. Idling
      Fig 13: Identifying Waveform 12
      G06067428Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the engine speed increases.

    14. WAVEFORM 13:

      CAN Communication Signal (Reference) 

      WAVEFORM REFERENCE

      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: Identifying Waveform 13
      G06067429Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The waveform varies depending on the CAN communication signal.

    15. WAVEFORM 14:

      CAN Communication Signal (Reference) 

      WAVEFORM REFERENCE

      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: Identifying Waveform 14
      G06067430Courtesy 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

      Terminal No. (Symbol) Tool Setting Condition
      CH1: D56-110 (NE+) - D56-111 (NE-) 5 V/DIV, 20 msec./DIV. Idle after engine wanned up
      CH2: D56-90 (G2) - D56-89 (G2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      Fig 16: Identifying Waveform 15
      G06067431Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the engine speed increases.

    17. WAVEFORM 16:

      Terminal DI of Air Injection Control Driver 

      WAVEFORM REFERENCE

      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: Identifying Waveform 16
      G06067432Courtesy 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

      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: Identifying Waveform 17
      G06067433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as engine speed increases.

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