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Terminals Of ECM

  1. CHECK ECM 
    Fig 1: Identifying Terminals Of ECM
    G05627812Courtesy 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.

      CONNECTOR TERMINAL WIRING COLOR REFERENCE

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A38-1 (BATT) - C53-81 (E1) L - W-B Battery (measuring battery voltage and for ECM memory) Always 11 to 14 V
      C53-41 (+BM) - C53-81 (E1) P - W-B Power source of throttle actuator Always 11 to 14 V
      A38-28 (IGSW) - C53-81 (E1) B - W-B Engine switch Engine switch on (IG) 11 to 14 V
      A38-3 (+B) - C53-81 (E1) B - W-B Power source of ECM Engine switch on (IG) 11 to 14 V
      A38-2 (+B2) - C53-81 (E1) B - W-B Power source of ECM Engine switch on (IG) 11 to 14 V
      C53-58 (OC1+) - C53-57 (OC1-) B - B-L Camshaft oil control valve (OCV) (Intake Side of Bank 1) Idling Pulse generation (See  b waveform 1)
      C53-52 (OC2+) - C53-51 (OC2-) L-B - R-B Camshaft oil control valve (OCV) (Intake Side of Bank 2) Idling Pulse generation (See  b waveform 1)
      C53-56 (OE1+) - C53-55 (OE1-) L-W - L-B Camshaft oil control valve (OCV) (Exhaust Side of Bank 1) Idling Pulse generation (See  b waveform 1)
      C53-50 (OE2+) - C53-49 (OE2-) L-R - L-B Camshaft oil control valve (OCV) (Exhaust Side of Bank 2) Idling Pulse generation (See  b waveform 1)
      A38-34 (MREL) - C53-81 (E1) W-R - W-B EFI relay Engine switch on (IG) 11 to 14 V
      C53-74 (VG) - C53-75 (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
      C53-73 (THA) - C53-97 (ETHW) Y-B - BR Intake air temperature sensor Idling, Intake air temperature 20°C (68°F) 0.5 to 3.4 V
      C53-76 (THW) - C53-98 (ETHA) G-B - BR Engine coolant temperature sensor Idling, Engine coolant temperature 80°C (176°F) 0.2 to 1.0 V
      C53-80 (VCTA) - C53-79 (ETA) Y-L Power source of throttle position sensor (specific voltage) Engine switch on (IG) 4.5 to 5.5 V
      C53-78 (VTA1) - C53-79 (ETA) R - Y-L Throttle position sensor (engine control) Engine switch on (IG), Throttle valve fully closed 0.5 to 1.2 V
      Engine switch on (IG), Throttle valve fully open 3.2 to 4.8 V
      C53-77 (VTA2) - C53-79 (ETA) Y - B-L Throttle position sensor (sensor malfunction detection) Engine switch on (IG), Throttle valve fully closed 2.1 to 3.1 V
      Engine switch on (IG), Throttle valve fully open 4.5 to 5.5 V
      A38-55 (VPA) - A38-58 (EPA) R-W-L Accelerator pedal position sensor (engine control) Engine switch on (IG), Accelerator pedal released 0.5 to 1.1 V
      Engine switch on (IG), Accelerator pedal fully depressed 2.6 to 4.5 V
      A38-56 (VPA2) - A38-60 (EPA2) GR-G - BR Accelerator pedal position sensor (sensor malfunctioning detection) Engine switch on (IG), Accelerator pedal released 1.2 to 2.0 V
      Engine switch on (IG), Accelerator pedal fully depressed 3.4 to 5.3 V
      A38-57 (VCPA) - A38-58 (EPA) L-W - W-L Power source of accelerator pedal position sensor (VPA) Engine switch on (IG) 4.5 to 5.5 V
      A38-59 (VCP2) - A38-60 (EPA2) V-BR Power source of accelerator pedal position sensor (VPA2) Engine switch on (IG) 4.5 to 5.5 V
      C53-22 (HA1A) - C53-23 (E04) L - W-B A/F sensor heater Idling Below 3.1 V
      Engine switch on (IG) 11 to 14 V
      C53-20 (HA2A) - C53-21 (E05) G - W-B A/F sensor heater Idling Below 3.1 V
      Engine switch on (IG) 11 to 14 V
      C53-126 (A1A+) - C53-81 (E1) G - W-B A/F sensor Engine switch on (IG) 3.3 V*
      C53-125 (A1A-) - C53-81 (E1) R - W-B A/F sensor Engine switch on (IG) 2.9 V*
      C53-103 (A2A+) - C53-81 (E1) P - W-B A/F sensor Engine switch on (IG) 3.3 V*
      C53-102 (A2A-) - C53-81 (E1) L - W-B A/F sensor Engine switch on (IG) 2.9 V*
      C53-45 (HT1B) - C53-46 (E03) G-B - W-B Heated oxygen sensor heater Idling Below 3.1 V
      Engine switch on (IG) 11 to 14 V
      C53-44 (HT2B) - C53-46 (E03) B - W-B Heated oxygen sensor heater Idling Below 3.1 V
      Engine switch on (IG) 11 to 14 V
      C53-114 (OX1B) - C53-115 (EX1B) G-L Heated oxygen sensor Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor Pulse generation (See  c waveform 2)
      C53-112 (OX2B) - C53-113 (EX2B) R-W Heated oxygen sensor Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor Pulse generation (See  c waveform 2)
      C53-86 (#10) - C53-43 (E01) R-L - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (See  d waveform 3)
      C53-109 (#20) - C53-43 (E01) L - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (See  d waveform 3)
      C53-85 (#30) - C53-43 (E01) R-B - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (See  d waveform 3)
      C53-108 (#40) - C53-43 (E01) Y - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (See  d waveform 3)
      C53-84 (#50) - C53-43 (E01) G - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (See  d waveform 3)
      C53-107 (#60) - C53-43 (E01) R - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (See  d waveform 3)
      C53-83 (#70) - C53-43 (E01) W - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (See  d waveform 3)
      C53-106 (#80) - C53-43 (E01) R-B - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (See  d waveform 3)
      C53-94 (KNK1) - C53-93 (EKNK) R-G Knock sensor Engine speed maintained at 4000 rpm after warming up engine Pulse generation (see  e waveform 4)
      C53-117 (KNK2) - C53-116 (EKN2) W-B Knock sensor Engine speed maintained at 4000 rpm after warming up engine Pulse generation (see  e waveform 4)
      C53-96 (KNK3) - C53-95 (EKN3) W-B Knock sensor Engine speed maintained at 4000 rpm after warming up engine Pulse generation (see  e waveform 4)
      C53-119 (KNK4) - C53-118 (EKN4) R-G Knock sensor Engine speed maintained at 4000 rpm after warming up engine Pulse generation (see  e waveform 4)
      C53-92 (W1+) - C53-91 (VV1-) R-Y Variable valve timing (WT) sensor (Intake Side of Bank 1) Idling Pulse generation (see  f waveform 5)
      C53-87 (VV2+) - C53-88 (VV2-) R-Y Variable valve timing (VVT) sensor (Intake Side for Bank 2) Idling Pulse generation (see  f waveform 5)
      C53-69 (EV1+) - C53-68 (EV1-) R-L-Y Variable valve timing (VVT) sensor (Exhaust Side of Bank 1) Idling Pulse generation (See  q waveform 16)
      C53-64 (EV2+) - C53-65 (EV2-) R-L - Y Variable valve timing (VVT) sensor (Exhaust Side of Bank 2) Idling Pulse generation (See  q waveform 16)
      C53-110 (NE+) - C53-111 (NE-) W-G-W Crankshaft position sensor Idling Pulse generation (see  f waveform 5)
      C53-40 (IGT1) - C53-81 (E1) B-Y - W-B Ignition coil (ignition signal) Idling Pulse generation (see  g waveform 6)
      C53-33 (IGT2) - C53-81 (E1) L-B - W-B Ignition coil (ignition signal) Idling Pulse generation (see  g waveform 6)
      C53-37 (IGT3) - C53-81 (E1) B - W-B Ignition coil (ignition signal) Idling Pulse generation (see  g waveform 6)
      C53-34 (IGT4) - C53-81 (E1) L-B - W-B Ignition coil (ignition signal) Idling Pulse generation (see  g waveform 6)
      C53-35 (IGT5) - C53-81 (E1) G-R - W-B Ignition coil (ignition signal) Idling Pulse generation (see  g waveform 6)
      C53-36 (IGT6) - C53-81 (E1) G - W-B Ignition coil (ignition signal) Idling Pulse generation (see  g waveform 6)
      C53-38 (IGT7) - C53-81 (E1) G-W - W-B Ignition coil (ignition signal) Idling Pulse generation (see  g waveform 6)
      C53-39 (IGT8) - C53-81 (E1) G-B - W-B Ignition coil (ignition signal) Idling Pulse generation (see  g waveform 6)
      C53-104 (IGF1) - C53-81 (E1) G-B - W-B Ignition coil (ignition confirmation signal) Engine switch on (IG) 4.5 to 5.5 V
      Idling Pulse generation (see  g waveform 6)
      C53-105 (IGF2) - C53-81 (E1) R - W-B Ignition coil (ignition confirmation signal) Engine switch on (IG) 4.5 to 5.5 V
      Idling Pulse generation (see  g waveform 6)
      C53-63 (PRG) - C53-81 (E1) L-B - W-B Purge VSV Engine switch on (IG) 11 to 14 V
      Idling Pulse generation (see  h waveform 7)
      A38-13 (SPD) - C53-81 (E1) V-R - W-B Speed signal from combination meter Driving at 20 km/h (12 mph) Pulse generation (see  i waveform 8)
      A38-46 (STA) - C53-81 (E1) R-B - W-B Starter signal Cranking 5.5 V or more
      C53-120 (NSW) - C53-81 (E1) L - W-B Park/neutral position switch Engine switch on (IG), Shift lever in other than P and N 11 to 14 V
      Engine switch on (IG), Shift lever in P or N Below 3.1 V
      A38-36 (STP) - C53-81 (E1) R - W-B Stop light switch Brake pedal depressed 7.5 to 14 V
      Brake pedal released Below 1.5 V
      A38-35 (ST1-) - C53-81 (E1) R-W - W-B Stop light switch (opposite to STP terminal) Engine switch on (IG), Brake pedal depressed Below 1.5 V
      Engine switch on (IG), Brake pedal released 7.5 to 14 V
      C53-19 (M+) - C53-82 (ME01) R - W-B Throttle actuator Idling with warm engine Pulse generation (see  j waveform 9)
      C53-18 (M-) - C53-82 (ME01) G - W-B Throttle actuator Idling with warm engine Pulse generation (See  k waveform 10)
      A38-48 (FC) - C53-81 (E1) L-R - W-B Fuel pump control Engine switch on (IG) 11 to 14 V
      A38-52 (FPC) - C53-81 (E1) W - W-B Fuel pump control Engine switch on (IG) Below 1.5 V
      A38-24 (VV) - C53-81 (E1) R-Y - W-B MIL Engine switch on (IG) Below 3.1 V
      Idling 11 to 14 V
      A38-16 (TC) - C53-81 (E1) V-W - W-B Terminal TC of DLC3 Engine switch on (IG) 11 to 14 V
      A38-15 (TACH) - C53-81 (E1) W-G - W-B Engine speed Idling Pulse generation (See  l waveform 11)
      A38-30 (VPMP) - C53-81 (E1) B-L - W-B Vent valve (built into canister pump module) Engine switch on (IG) 11 to 14 V
      A38-49 (MPMP) - C53-81 (E1) G-O - W-B Leak detection pump (built into canister pump module) Leak detection pump OFF Below 3.1 V
      Leak detection pump ON 11 to 14 V
      C53-67 (VCV1) - C53-97 (ETHW) L-BR Power source for sensor (specific voltage) Engine switch on (IG) 4.5 to 5.5 V
      C53-66 (VCV2) - C53-97 (ETHW) L-BR Power source for sensor (specific voltage) Engine switch on (IG) 4.5 to 5.5 V
      C53-121 (PPMP) - C53-97 (ETHW) P-BR Canister pressure sensor (built into canister pump module) Engine switch on (IG) 3.3 to 4.0 V
      C53-32 (ALT) - C53-81 (E1) R - W-B Generator Engine switch on (IG) 11 to 14 V
      A38-10 (CANH) - C53-81 (E1) P - W-B CAN communication line Engine switch on (IG) Pulse generation (See  m waveform 12)
      A38-11 (CANL) - C53-81 (E1) B - W-B CAN communication line Engine switch on (IG) Pulse generation (See  n waveform 13)
      C53-62 (ACIS) - C53-81 (E1) L-Y - W-B VSV for ACIS (Acoustic Control Induction System) operation signal Engine switch on (IG) 11 to 14 V
      C53-28 (AIRV) - C53-81 (E1) BR - W-B Air switching valve for secondary air injection system Engine switch on (IG) 11 to 14 V
      C53-54 (AIRP) - C53-81 (E1) P - W-B Air pump control Engine switch on (IG) 11 to 14 V
      C53-30 (AIDI) - C53-81 (E1) G - W-B Diagnostic information signal for air injection system Air injection system operates Pulse generation (See  p waveform 15)
      A38-54 (AIP) - C53-98 (ETHA) P-L - BR Secondary air injection system pressure signal Engine switch on (IG) 3.0 to 3.6 V
      A38-43 (ARV2) - C53-81 (E1) R-L - W-B Air switching valve for secondary air injection system Engine switch on (IG) 11 to 14 V
      C53-53 (ARP2) - C53-81 (E1) P-L - W-B Air pump control Engine switch on (IG) 11 to 14 V
      C53-29 (AID2) - C53-81 (E1) G-Y - W-B Diagnostic information signal for air injection system Air injection system operates Pulse generation (See  p waveform 15)
      A38-53 (AIP2) - C53-97 (ETHW) LG-B - BR Secondary air injection system pressure signal Engine switch on (IG) 3.0 to 3.6 V
      C53-90 (G2) - C53- 89 (G2-) G-Y Camshaft position sensor Idling Pulse generation (See  o waveform 14)
      A38-18 (DI) - C53-81 (E1) G-Y - W-B Fuel pump control Engine switch on (IG) 0 to 3.0 V
      A38-14 (STSW) - C53-81 (E1) R - W-B Starter switch Shift lever in P or N, Cranking 6.0 V or more
      A38-41 (ACCR) - C53-81 (E1) L-Y - W-B ACC relay control signal Engine switch on (IG) → Cranking 11 to 14 V → Below 1 V
      C53-16 (STAR) - C53-81 (E1) L - W-B Starter relay control Engine switch on (IG) Below 1.5 V
      Cranking 5.5 V or higher
      C53-72 (PSP) - C53-81 (E1) G - W-B Power steering oil pressure sensor Engine switch on (IG) 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 1

      Terminal No. (Symbol) Tool Setting Condition
      C53-58 (OC1+) - C53-57 (OC1-) 5 V/DIV., 1 msec./DIV. Idling
      C53-52 (OC2+) - C53-51 (OC2-) 5 V/DIV., 1 msec/DIV. Idling
      C53-56 (OE1+) - C53-55 (OE1-) 5 V/DIV., 1 msec./DIV. Idling
      C53-50 (OE2+) - C53-49 (OE2-) 5 V/DIV., 1 msec/DIV. Idling
      Fig 2: Waveform Graph (Waveform 1)
      G05627813Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. WAVEFORM 2:

      Heated Oxygen Sensor 

      WAVEFORM REFERENCE 2

      Terminal No. (Symbol) Tool Setting Condition
      C53-114 (OX1B) - C53-115 (EX1B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2,500 rpm for 2 minutes after warming up sensor
      C53-112 (OX2B) - C53-113 (EX2B) 0.2 V/DIV., 200 msec./ DIV. Engine speed maintained at 2,500 rpm for 2 minutes after warming up sensor
      Fig 3: Waveform Graph (Waveform 2)
      G05627814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      In the Data List, item O2S B1 S2 or O2S B2 S2 shows the ECM input values from the heated oxygen sensor.

    4. WAVEFORM 3:

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

      WAVEFORM REFERENCE 3

      Terminal No. (Symbol) Tool Setting Condition
      C53-86 (#10) - C53-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C53-109 (#20) - C53-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C53-85 (#30) - C53-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C53-108 (#40) - C53-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C53-84 (#50) - C53-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C53-107 (#60) - C53-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C53-83 (#70) - C53-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C53-106 (#80) - C53-43 (E01) 20 V/DIV., 20 msec./DIV. Idling
      Fig 4: Waveform Graph (Waveform 3)
      G05627815Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The wavelength becomes shorter as the engine speed increases.

    5. WAVEFORM 4:

      Knock Sensor 

      WAVEFORM REFERENCE 4

      Terminal No. (Symbol) Tool Setting Condition
      C53-94 (KNK1) - C53-93 (EKNK) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4,000 rpm after warming up engine
      C53-117 (KNK2) - C53-116 (EKN2) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4,000 rpm after warming up engine
      C53-96 (KNK3) - C53-95 (EKN3) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4,000 rpm after warming up engine
      C53-119 (KNK4) - C53-118 (EKN4) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4,000 rpm after warming up engine
      Fig 5: Waveform Graph (Waveform 4)
      G05627816Courtesy 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 5

      Terminal No. (Symbol) Tool Setting Condition
      (a) C53-110 (NE+) - C53-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (b) C53-92 (VV1+) - C53-91 (VV1-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (C) C53-87 (VV2+) - C53-88 (VV2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up

      HINT:

      The wavelength becomes shorter as engine speed increases.

      Fig 6: Waveform Graph (Waveform 5)
      G05627817Courtesy 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: Waveform Graph (Waveform 6)
      G05627818Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM REFERENCE 6

      Terminal No. (Symbol) Tool Setting Condition
      (a) C53-40 (IGT1) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C53-33 (IGT2) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C53-37 (IGT3) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C53-34 (IGT4) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C53-35 (IGT5) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C53-36 (IGT6) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C53-38 (IGT7) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C53-39 (IGT8) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (b)C53-104 (IGF1) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (b)C53-105 (IGF2) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling

      HINT:

      The wavelength becomes shorter as engine speed increases.

    8. WAVEFORM 7:

      Purge VSV 

      WAVEFORM REFERENCE 7

      Terminal No. (Symbol) Tool Setting Condition
      C53-63 (PRG) - C53-81 (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: Waveform Graph (Waveform 7)
      G05627819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. WAVEFORM 8:

      Vehicle Speed Signal 

      WAVEFORM REFERENCE 8

      Terminal No. (Symbol) Tool Setting Condition
      A38-13 (SPD) - C53-81 (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: Waveform Graph (Waveform 8)
      G05627820Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. WAVEFORM 9:

      Throttle Actuator Positive Terminal 

      WAVEFORM REFERENCE 9

      Terminal No. (Symbol) Tool Setting Condition
      C53-19 (M+) - C53-82 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine

      HINT:

      The duty ratio varies depending on the throttle actuator operation.

      Fig 10: Waveform Graph (Waveform 9)
      G05627821Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    11. WAVEFORM 10:

      Throttle Actuator Negative Terminal 

      WAVEFORM REFERENCE 10

      Terminal No. (Symbol) Tool Setting Condition
      C53-18 (M-) - C53-82 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine

      HINT:

      The duty ratio varies depending on the throttle actuator operation.

      Fig 11: Waveform Graph (Waveform 10)
      G05627822Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    12. WAVEFORM 11:

      Engine Speed Signal 

      WAVEFORM REFERENCE 11

      Terminal No. (Symbol) Tool Setting Condition
      A38-15 (TACH) - C53-81 (E1) 5 V/DIV., 10 msec./DIV. Idling

      HINT:

      The wavelength becomes shorter as the engine speed increases.

      Fig 12: Waveform Graph (Waveform 11)
      G05627823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    13. WAVEFORM 12:

      CAN Communication Signal 

      WAVEFORM REFERENCE 12

      Terminal No. (Symbol) Tool Setting Condition
      A38-10 (CANH) - C53-81 (E1) 1 V/DIV., 10 μsec./DIV. Engine stops and engine switch on (IG)

      HINT:

      The waveform varies depending on the CAN communication signal.

      Fig 13: Waveform Graph (Waveform 12)
      G05627824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    14. WAVEFORM 13:

      CAN Communication Signal 

      WAVEFORM REFERENCE 13

      Terminal No. (Symbol) Tool Setting Condition
      A38-11 (CANL) - C53-81 (E1) 1 V/DIV., 10 μsec/DIV. Engine stops and engine switch on (IG)

      HINT:

      The waveform varies depending on the CAN communication signal.

      Fig 14: Waveform Graph (Waveform 13)
      G05627825Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    15. WAVEFORM 14:

      Crankshaft Position Sensor and Camshaft Position Sensor 

      WAVEFORM REFERENCE 14

      Terminal No. (Symbol) Tool Setting Condition
      CH1: C53-110 (NE+) - C53-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      CH2: C53-90 (G2) - C53-89 (G2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up

      HINT:

      The wavelength becomes shorter as the engine speed increases.

      Fig 15: Waveform Graph (Waveform 14)
      G05627826Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    16. WAVEFORM 15:

      Terminal PI of Air Injection Control Driver 

      WAVEFORM REFERENCE 15

      Terminal No. (Symbol) Tool Setting Condition
      C53-30 (AIDI) - C53-81 (E1) 5 V/DIV., 20 to 40 msec./DIV. Performing system check using Techstream (air injection check)
      C53-29 (AID2) - C53-81 (E1) 5 V/DIV., 20 to 40 msec./ DIV. Performing system check using Techstream (air injection check)

      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 ).

      Fig 16: Waveform Graph (Waveform 15)
      G05627827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    17. WAVEFORM 16:

      Crankshaft Position Sensor and VVT Sensor for Exhaust Side 

      WAVEFORM REFERENCE 16

      Terminal No. (Symbol) Tool Setting Condition
      (a) C53-110 (NE+) - C53-111 (NE-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (b) C53-69 (EV1+) - C53-68 (EV1-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up
      (c) C53-64 (EV2+) - C53-65 (EV2-) 5 V/DIV., 20 msec./DIV. Idle after engine warmed up

      HINT:

      The wavelength becomes shorter as engine speed increases.

      Fig 17: Waveform Graph (Waveform 16)
      G05627828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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