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Terminals Of ECM

  1. CHECK ECM 
    Fig 1: Identifying Terminals Of ECM Connector
    G05149657Courtesy 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 SPECIFIED CONDITION

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A24-1 (BATT) - D74-81 (E1) L - BR Battery (for measuring battery voltage arid for ECM memory) Always 11 to 14 V
      D74-41 (+BM) - D74-81 (E1) P - BR Power source of throttle actuator Always 11 to 14 V
      A24-28 (IGSW) - D74-81 (E1) LG - BR Ignition switch Ignition switch ON 11 to 14 V
      A24-3 (+B) - D74-81 (E1) GR - BR Power source of ECM Ignition switch ON 11 to 14 V
      A24-2 (+B2) - D74-81 (E1) GR - BR Power source of ECM Ignition switch ON 11 to 14 V
      D74-58 (OC1+) - D74-57 (OC1-) B - B-L Camshaft timing oil control valve (OCV) (for Intake Side of Bank 1) Idling Pulse generation (see waveform 1  b)
      D74-52 (OC2+) - D74-51 (OC2-) L-B - R-B Camshaft timing oil control valve (OCV) (for Intake Side of Bank 2) Idling Pulse generation (see waveform 1  b)
      D74-56 (OE1+) - D74-55 (OE1-) L-W - L-B Camshaft timing oil control valve (OCV) (for Exhaust Side of Bank 1) Idling Pulse generation (see waveform 1  b)
      D74-50 (OE2+) - D74-49 (OE2-) L-R - L Camshaft timing oil control valve (OCV) (for Exhaust Side of Bank 2) Idling Pulse generation (see waveform 1  b)
      A24-34 (MREL) - D74-81 (E1) W - BR EFI relay Ignition switch ON 11 to 14 V
      D74-74 (VG) - D74-75 (E2G) L-Y - G-W Mass air flow meter Idling, Shift lever position P or N, A/C switch OFF 0.5 to 3.0 V
      D74-73 (THA) - D74-97 (ETHW) Y-B - BR Intake air temperature sensor Idling, Intake air temperature 20°C (68°F) 0.5 to 3.4 V
      D74-76 (THW) - D74-98 (ETHA) G-B - BR Engine coolant temperature sensor Idling, Engine coolant temperature 80°C (176°F) 0.2 to 1.0 V
      D74-80 (VCTA) - D74-79 (ETA) Y - L Power source of throttle position sensor (specific voltage) Ignition switch ON 4.5 to 5.5 V
      D74-78 (VTA1) - D74-79 (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
      D74-77 (VTA2) - D74-79 (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
      A24-55 (VPA) - A24-58 (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
      A24-56 (VPA2) - A24-60 (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
      A24-57 (VCPA) - A24-58 (EPA) B - BE Power source of accelerator pedal position sensor (for VPA) Ignition switch ON 4.5 to 5.5 V
      A24-59 (VCP2) - A24-60 (EPA2) V - BR Power source of accelerator pedal position sensor (for VPA2) Ignition switch ON 4.5 to 5.5 V
      D74-22 (HA1A) - D74-23 (E04) L - W-B A/F sensor heater Idling Below 3.0 V
      Ignition switch ON 11 to 14 V
      D74-20 (HA2A) - D74-21 (E05) G - W-B A/F sensor heater Idling Below 3.0 V
      Ignition switch ON 11 to 14 V
      D74-126 (A1A+) - D74-81 (E1) G - BR A/F sensor Ignition switch ON 3.3 V*
      D74-125 (A1A-) - D74-81 (E1) R - BR A/F sensor Ignition switch ON 2.9 V*
      D74-103 (A2A+) - D74-81 (E1) P - BR A/F sensor Ignition switch ON 3.3 V*
      D74-102 (A2A-) - D74-81 (E1) L - BR A/F sensor Ignition switch ON 2.9 V*
      D74-45 (HT1B) - D74-46 (E03) G-B - W-B Heated oxygen sensor heater Idling Below 3.0 V
      Ignition switch ON 11 to 14 V
      D74-44 (HT2B) - D74-46 (E03) B - W-B Heated oxygen sensor heater Idling Below 3.0 V
      Ignition switch ON 11 to 14 V
      D74-114 (OX1B) - D74-115 (EX1B) G - L Heated oxygen sensor Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor Pulse generation (see waveform 2  c)
      D74-112 (OX2B) - D74-113 (EX2B) R - W Heated oxygen sensor Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor Pulse generation (see waveform 2  c)
      D74-86 (#10) - D74-43 (E01) R-L - W-B Injector Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 3  d)
      D74-109 (#20) - D74-43 (E01) L - W-B Injector Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 3  d)
      D74-85 (#30) - D74-43 (E01) R - W-B Injector Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 3  d)
      D74-108 (#40) - D74-43 (E01) Y - W-B Injector Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 3  d)
      D74-84 (#50) - D74-43 (E01) G - W-B Injector Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 3  d)
      D74-107 (#60) - D74-43 (E01) R - W-B Injector Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 3  d)
      D74-83 (#70) - D74-43 (E01) W - W-B Injector Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 3  d)
      D74-106 (#80) - D74-43 (E01) R-B - W-B Injector Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 3  d)
      D74-94 (KNK1) - D74-93 (EKNK) R - G Knock sensor Engine speed maintained at 4000 RPM after warming up engine Pulse generation (see waveform 3  e)
      D74-117 (KNK2) - D74-116 (EKN2) W - B Knock sensor Engine speed maintained at 4000 RPM after warming up engine Pulse generation (see waveform 4  e)
      D74-96 (KNK3) - D74-95 (EKN3) W - B Knock sensor Engine speed maintained at 4000 RPM after warming up engine Pulse generation (see waveform 4  e)
      D74-119 (KNK4) - D74-118 (EKN4) R - G Knock sensor Engine speed maintained at 4000 RPM after warming up engine Pulse generation (see waveform 4  e)
      D74-92 (VV1+) - D74-91 (VV1-) R - G Variable valve timing (VVT) sensor (for Intake Side of Bank 1) Idling Pulse generation (see waveform 5  f)
      D74-87 (VV2+) - D74-88 (VV2-) R - Y Variable valve timing (VVT) sensor (for Intake Side for Bank 2) Idling Pulse generation (see waveform 5  f)
      D74-69 (EV1+) - D74-68 (EV1-) R-L - B Variable valve timing (VVT) sensor (for Exhaust Side of Bank 1) Idling Pulse generation (see waveform 16  q)
      D74-64 (EV2+) - D74-65 (EV2-) R-L - B Variable valve timing (VVT) sensor (for Exhaust Side of Bank 2) Idling Pulse generation (see waveform 16  q)
      D74-110 (NE+) - D74-111 (NE-) W - Y Crankshaft position sensor Idling Pulse generation (see waveform 5  f)
      D74-40 (IGT1) - D74-81 (E1) B-Y - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 6  g)
      D74-33 (IGT2) - D74-81 (E1) L-Y - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 6  g)
      D74-37 (IGT3) - D74-81 (E1) B - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 6  g)
      D74-34 (IGT4) - D74-81 (E1) L-B - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 6  g)
      D74-35 (IGT5) - D74-81 (E1) G-R - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 6  g)
      D74-36 (IGT6) - D74-81 (E1) G - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 6  g)
      D74-38 (IGT7) - D74-81 (E1) G-W - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 6  g)
      D74-39 (IGT8) - D74-81 (E1) G-B - BR Ignition coil (ignition signal) Idling Pulse generation (see waveform 6  g)
      D74-104 (IGF1) - D74-81 (E1) G-B - BR Ignition coil (ignition confirmation signal) Ignition switch ON 4.5 to 5.5 V
      Idling Pulse generation (see waveform 6  g)
      D74-105 (IGF2) - D74-81 (E1) R - BR Ignition coil (ignition confirmation signal) Ignition switch ON 4.5 to 5.5 V
      Idling Pulse generation (see waveform 6  g)
      D74-63 (PRG) - D74-81 (E1) L-B - BR Purge VSV Ignition switch ON 11 to 14 V
      Idling Pulse generation (see waveform 7  h)
      A24-13 (SPD) - D74-81 (E1) B - BR Speed signal from combination meter Driving at 20 km/h (12 mph) Pulse generation (see waveform 8  i)
      A24-46 (STA) - D74-81 (E1) R - BR Starter signal Cranking 5.5 V or more
      D74-120 (NSW) - D74-81 (E1) L - BR Park/neutral position switch Ignition switch ON, Shift lever position other than P and N 11 to 14 V
      Ignition switch ON, Shift lever position in P or N Below 3.0 V
      A24-36 (STP) - D74-81 (E1) LG - BR Stop light switch Brake pedal depressed 7.5 to 14 V
      Brake pedal released Below 1.5 V
      A24-35 (ST1-) - D74-81 (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
      D74-19 (M+) - D74-82 (ME01) R - W-B Throttle actuator Idling with warm engine Pulse generation (see waveform 9  j)
      D74-18 (M-) - D74-82 (ME01) G - W-B Throttle actuator Idling with warm engine Pulse generation (see waveform 10  k)
      A24-48 (FC) - D74-81 (E1) L - BR Fuel pump control Ignition switch ON 11 to 14 V
      A24-52 (FPC) - D74-81 (E1) BE - BR Fuel pump control Ignition switch ON Below 1.5 V
      A24-24 (W) - D74-81 (E1) P - BR MIL Ignition switch ON Below 3.0 V
      Idling 11 to 14 V
      A24-16 (TC) - D74-81 (E1) R - BR Terminal TC of DLC3 Ignition switch ON 11 to 14 V
      A24-15 (TACH) - D74-81 (E1) W - BR Engine speed Idling Pulse generation (see waveform 11  l)
      A24-30 (VPMP) - D74-81 (E1) V - BR Vent valve (built into canister pump module) Ignition switch ON 11 to 14 V
      A24-49 (MPMP) - D74-81 (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
      D74-67 (VCV1) - D74-97 (ETHW) L - BR Power source for sensor (specific voltage) Ignition switch ON 4.5 to 5.5 V
      D74-66 (VCV2) - D74-97 (ETHW) L - BR Power source for sensor (specific voltage) Ignition switch ON 4.5 to 5.5 V
      D74-121 (PPMP) - D74-97 (ETHW) P - BR Canister pressure sensor (built into canister pump module) Ignition switch ON 3.3 to 4.0 V
      D74-32 (ALT) - D74-81 (E1) R - BR Generator Ignition switch ON 11 to 14 V
      A24-10 (CANH) - D74-81 (E1) GR - BR CAN communication line Ignition switch ON Pulse generation (see waveform 12  m)
      A24-11 (CANL) - D74-81 (E1) W - BR CAN communication line Ignition switch ON Pulse generation (see waveform 13  n)
      D74-62 (ACIS) - D74-81 (E1) L-Y - BR VSV for ACIS (Acoustic Control Induction System) operation signal Ignition switch ON 11 to 14 V
      D74-28 (AIRV) - D74-81 (E1) BR - BR Air switching valve for secondary air injection system Ignition switch ON 11 to 14 V
      D74-54 (AIRP) - D74-81 (E1) P - BR Air pump control Ignition switch ON 11 to 14 V
      D74-30 (AIDI) - D74-81 (E1) G - BR Diagnostic information signal for air injection system Air injection system operates Pulse generation (see waveform 15  p)
      A24-54 (AIP) - D74-98 (ETHA) Y - BR Secondary air injection system pressure signal Ignition switch ON 3.0 to 3.6 V
      A24-43 (ARV2) - D74-81 (E1) V - BR Air switching valve for secondary air injection system Ignition switch ON 11 to 14 V
      D74-53 (ARP2) - D74-81 (E1) P-L - BR Air pump control Ignition switch ON 11 to 14 V
      D74-29 (AID2) - D74-81 (E1) G-Y - BR Diagnostic information signal for air injection system Air injection system operates Pulse generation (see waveform 15  p)
      A24-53 (AIP2) - D74-97 (ETHW) G - BR Secondary air injection system pressure signal Ignition switch ON 3.0 to 3.6 V
      D74-90 (G2) - D74-89 (G2-) R - B Camshaft position sensor Idling Pulse generation (see waveform 14  o)
      A24-18 (DI) - D74-81 (E1) L - BR Fuel pump control Ignition switch ON 0 to 3.0 V
      A24-14 (STSW) - D74-81 (E1) BR - BR Starter switch Shift lever position P or N, Cranking 6.0 V or more
      A24-41 (ACCR) - D74-81 (E1) BR - BR ACC relay control signal Ignition switch ON → Cranking 11 to 14 V → Below 1 V
      D74-16 (STAR) - D74-81 (E1) L - BR Starter relay control Ignition switch ON Below 1.5 V
      Cranking 5.5 V or more
      D74-72 (PSP) - D74-81 (E1) G - BR Power steering oil pressure sensor Ignition switch ON 0.5 to 4.5 V
      D74-60 (FPCR) - D74-81 (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 timing oil control valve (OCV) 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      D74-58 (OC1+) - D74-57 (OC1-) 5 V/DIV., 1 msec./DIV. Idling
      D74-52 (OC2+) - D74-51 (OC2-) 5 V/DIV., 1 msec./DIV. Idling
      D74-56 (OE1+) - D74-55 (OE1-) 5 V/DIV., 1 msec./DIV. Idling
      D74-50 (OE2+) - D74-49 (OE2-) 5 V/DIV., 1 msec./DIV. Idling
      Fig 2: Identifying Waveform 1
      G04828019Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. WAVEFORM 2:

      Heated oxygen sensor 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      D74-114 (OX1B) - D74-115 (EX1B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor
      D74-112 (OX2B) - D74-113 (EX2B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor
      Fig 3: Identifying Waveform 2
      G04828020Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

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

    4. WAVEFORM 3:

      Injector No. 1 (to No. 8) injection signal 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      D74-86 (#10) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D74-109 (#20) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D74-85 (#30) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D74-108 (#40) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D74-84 (#50) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D74-107 (#60) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D74-83 (#70) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      D74-106 (#80) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      Fig 4: Identifying Waveform 3
      G04828021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the engine speed increases.

    5. WAVEFORM 4:

      Knock sensor 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      D74-94 (KNK1) - D74-93 (EKNK) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      D74-117 (KNK2) - D74-116 (EKN2) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      D74-96 (KNK3) - D74-95 (EKN3) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      D74-119 (KNK4) - D74-118 (EKN4) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      Fig 5: Identifying Waveform 4
      G04828022Courtesy 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.
    6. WAVEFORM 5:

      Crankshaft position sensor and VVT sensor for intake side 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      (a) D74-110 (NE+) - D74-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (b) D74-92 (VV1+) - D74-91 (VV1-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (c) D74-87 (VV2+) - D74-88 (VV2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up

      HINT:

      The wavelength becomes shorter as engine speed increases.

      Fig 6: Identifying Waveform 5
      G04942640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. WAVEFORM 6:

      Igniter IGT signal (from ECM to igniter) and Igniter IGF signal (from igniter to ECM) 

      Fig 7: Identifying Waveform 6
      G04967774Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      (a) D74-40 (IGT1) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D74-33 (IGT2) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D74-37 (IGT3) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D74-34 (IGT4) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D74-35 (IGT5) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D74-36 (IGT6) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D74-38 (IGT7) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) D74-39 (IGT8) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (b) D74-104 (IGF1) - D74-81 (E1) 2V/DIV., 20 msec./DIV. Idling
      (b) D74-105 (IGF2) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Idling

      HINT:

      The wavelength becomes shorter as engine speed increases.

    8. WAVEFORM 7:

      Purge VSV 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      D74-63 (PRG) - D74-81 (E1) 10 V/DIV., 10 to 100 msec./DIV. Idling

      HINT:

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

      Fig 8: Identifying Waveform 7
      G05149265Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. WAVEFORM 8:

      Vehicle speed signal 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      A24-13 (SPD) - D74-81 (E1) 2 V/DIV., 20 msec./DIV. Driving at 20 km/h (12 mph)

      HINT:

      The wavelength becomes shorter as the vehicle speed increases.

      Fig 9: Identifying Waveform 8
      G04828026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. WAVEFORM 9:

      Throttle actuator positive terminal 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      D74-19 (M+) - D74-82 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine

      HINT:

      The duty ratio varies depending on the throttle actuator operation.

      Fig 10: Identifying Waveform 9
      G04828027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    11. WAVEFORM 10:

      Throttle actuator negative terminal 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      D74-18 (M-) - D74-82 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine

      HINT:

      The duty ratio varies depending on the throttle actuator operation.

      Fig 11: Identifying Waveform 10
      G04828028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    12. WAVEFORM 11:

      Engine speed signal 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      A24-15 (TACH) - D74-81 (E1) 5 V/DIV., 10 msec./DIV. Idling

      HINT:

      The wavelength becomes shorter as the engine speed increases.

      Fig 12: Identifying Waveform 11
      G05149668Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    13. WAVEFORM 12:

      CAN communication signal 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      A24-10 (CANH) - D74-81 (E1) 1 V/DIV., 10 μsec./DIV. Engine stops and ignition switch ON

      HINT:

      The waveform varies depending on the CAN communication signal.

      Fig 13: Identifying Waveform 12
      G05149669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    14. WAVEFORM 13:

      CAN communication signal 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      A24-11 (CANL) - D74-81 (E1) 1 V/DIV., 10 μsec./DIV. Engine stops and ignition switch ON

      HINT:

      The waveform varies depending on the CAN communication signal.

      Fig 14: Identifying Waveform 13
      G05149670Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    15. WAVEFORM 14:

      Crankshaft position sensor and camshaft position sensor 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      CH1: D74-110 (NE+) - D74-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      CH2: D74-90 (G2) - D74-89 (G2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up

      HINT:

      The wavelength becomes shorter as the engine speed increases.

      Fig 15: Identifying Waveform 14
      G04942642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    16. WAVEFORM 15:

      Terminal DI of air injection control driver 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      D74-30 (AIDI) - D74-81 (E1) 5 V/DIV., 20 to 40 msec./DIV. Performing system check using Techstream (air injection check)
      D74-29 (AID2) - D74-81 (E1) 5 V/DIV., 20 to 40 msec./DIV. Performing system check using or Techstream (air injection check)
      Fig 16: Identifying Waveform 15
      G05196599Courtesy 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 ).

    17. WAVEFORM 16:

      Crankshaft position sensor and VVT sensor for exhaust side 

      WAVEFORM REFERENCE

      Terminal No. (Symbols) Tool Setting Condition
      (a) D74-110 (NE+) - D74-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (b) D74-69 (EV1+) - D74-68 (EV1-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (c) D74-64 (EV2+) - D74-65 (EV2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up

      HINT:

      The wavelength becomes shorter as engine speed increases.

      Fig 17: Identifying Waveform 16
      G04942641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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