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Terminals Of ECM

  1. CHECK ECM 
    Fig 1: Identifying ECM Connector Terminals
    GTY287267Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage according to the value(s) in the table below.

      HINT: 

      The standard 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 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 No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G44-24 (BATT) - C30-12 (E1) L - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
      C30-23 (+BM) - C30-12 (E1) P - BR Power source of throttle actuator Always 11 to 14 V
      G45-21 (IGSW) - C30-12 (E1) W - BR Engine switch Engine switch on (IG) 11 to 14 V
      G44-22 (+B) - C30-12 (E1) W - BR Power source of ECM Engine switch on (IG) 11 to 14 V
      G44-23 (+B2) - C30-12 (E1) W - BR Power source of ECM Engine switch on (IG) 11 to 14 V
      C29-19 (OC1+) - C29-20 (OC1-) LG - L-Y Camshaft timing oil control valve (for Intake Side of Bank 1) Idling Pulse generation
      (See waveform 1)
      C28-19 (OC2+) - C28-20 (OC2-) L-R - LG Camshaft timing oil control valve (for Intake Side of Bank 2) Idling Pulse generation
      (See waveform 1)
      C29-21 (OE1+) - C29-22 (OE1-) B-R - G-W Camshaft timing oil control valve (for Exhaust Side of Bank 1) Idling Pulse generation
      (See waveform 1)
      C28-21 (OE2+) - C28-22 (OE2-) B-L- L Camshaft timing oil control valve (for Exhaust Side of Bank 2) Idling Pulse generation
      (See waveform 1)
      G44-9 (MREL) - C30-12 (E1) V - BR EFI relay Engine switch on (IG) 11 to 14 V
      C29-14 (VG) - C29-13 (E2G) R-W - B-W Mass air flow meter Idling, shift lever in P or N, A/C switch off 0.5 to 3.0 V
      C29-15 (THA) - C29-7 (E2) Y - W-R Intake air temperature sensor Idling, intake air temperature 20 °C (68 °F) 0.5 to 3.4 V
      C30-17 (THW) - C29-7 (E2) G - W-R Engine coolant temperature sensor Idling, engine coolant temperature 80 °C (176 °F) 0.2 to 1.0 V
      C30-13 (VCTA) - C30-14 (ETA) R - W Power source of throttle position sensor (fixed voltage) Engine switch on (IG) 4.5 to 5.5 V
      C30-15 (VTA1) - C30-14 (ETA) W-R - W Throttle position sensor (for engine control) Engine switch on (IG),
      throttle valve fully closed      		 0.5 to 1.1 V
      Engine switch on (IG),
      throttle valve fully open      		 3.2 to 4.8 V
      C30-16 (VTA2) - C30-14 (ETA) R-B - W Throttle position sensor (for 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      		 4.6 to 5.0 V
      G45-6 (VPA) - G45-3 (EPA) L - P Accelerator pedal position sensor (for 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
      G45-5 (VPA2) - G45-1 (EPA2) GR - W Accelerator pedal position sensor (for sensor malfunction 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
      G45-4 (VCPA) - G45-3 (EPA) LG - P Power source of accelerator pedal position sensor (for VPA) Engine switch on (IG) 4.5 to 5.5 V
      G45-2 (VCP2) - G45-1 (EPA2) R - W Power source of accelerator pedal position sensor (for VPA2) Engine switch on (IG) 4.5 to 5.5 V
      C31-17 (HA1A) - C31-16 (E04) B-W - W-B Air fuel ratio sensor heater Idling with warm engine Pulse generation
      (See waveform 2)
      C31-17 (HA1A) - C31-16 (E04) B-W - W-B Air fuel ratio sensor heater Engine switch on (IG) 11 to 14 V
      C31-19 (HA2A) - C31-18 (E05) R-L - W-B Air fuel ratio sensor heater Idling with warm engine Pulse generation
      (See waveform 2)
      C31-19 (HA2A) - C31-18 (E05) R-L - W-B Air fuel ratio sensor heater Engine switch on (IG) 11 to 14 V
      C30-1 (A1A+) - C30-12 (E1) Y -BR Air fuel ratio sensor Engine switch on (IG) 3.3 V*
      C30-2 (A1A-) - C30-12 (E1) L - BR Air fuel ratio sensor Engine switch on (IG) 2.9 V*
      C30-7 (A2A+) - C30-12 (E1) P - BR Air fuel ratio sensor Engine switch on (IG) 3.3 V*
      C30-8 (A2A-) - C30-12 (E1) V - BR Air fuel ratio sensor Engine switch on (IG) 2.9 V*
      C31-12 (HT1B) - C31-11 (E03) G-Y - W-B Heated oxygen sensor heater Idling Below 3.0 V
      C31-12 (HT1B) - C31-11 (E03) G-Y - W-B Heated oxygen sensor heater Engine switch on (IG) 11 to 14 V
      C31-13 (HT2B) - C31-11 (E03) P - W-B Heated oxygen sensor heater Idling Below 3.0 V
      C31-13 (HT2B) - C31-11 (E03) P - W-B Heated oxygen sensor heater Engine switch on (IG) 11 to 14 V
      C28-2 (OX1B) - C28-1 (EX1B) B - GR Heated oxygen sensor Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor Pulse generation
      (See waveform 3)
      C28-4 (OX2B) - C28-3 (EX2B) W - L-W
      C31-6 (#10) - C31-14 (E01) B - W-B Fuel injector Engine switch on (IG) 11 to 14 V
      C31-1 (#20) - C31-14 (E01) L - W-B Idling Pulse generation
      (See waveform 4)
      C31-7 (#30) - C31-14 (E01) R - W-B
      C31-2 (#40) - C31-14 (E01) G - W-B
      C31-8 (#50) - C31-14 (E01) GR - W-B
      C31-3 (#60) - C31-14 (E01) P-L - W-B
      C31-9 (#70) - C31-14 (E01) V - W-B
      C31-4 (#80) - C31-14 (E01) LG - W-B
      C29-11 (KNK1) - C29-12 (EKNK) W - B Knock sensor Engine speed maintained at 4000 RPM after warming up engine Pulse generation
      (See waveform 5)
      C29-5 (KNK2) - C29-6 (EKN2) W - B
      C29-9 (KNK3) - C29-10 (EKN3) G - R
      C29-3 (KNK4) - C29-4 (EKN4) G - R
      C28-7 (VV1+) - C28-8 (VV1-) L-B - GB-W VVT sensor (for Intake Side of Bank 1) Idling Pulse generation
      (See waveform 6)
      C28-12 (VV2+) - C28-11 (VV2-) G-B - Y VVT sensor (for Intake Side of Bank 2) Idling Pulse generation
      (See waveform 6)
      C28-13 (EV1+) - C28-14 (EV1-) W - Y VVT sensor (for Exhaust Side of Bank 1) Idling Pulse generation
      (See waveform 17)
      C28-18 (EV2+) - C28-17 (EV2-) V - B-R VVT sensor (for Exhaust Side of Bank 2) Idling Pulse generation
      (See waveform 17)
      C28-6 (NE+) - C28-5 (NE-) L - B Crankshaft position sensor Idling Pulse generation
      (See waveform 6)
      C30-24 (IGT1) - C30-12 (E1) B-L - BR Ignition coil (ignition signal) Idling Pulse generation
      (See waveform 7)
      C29-27 (IGT2) - C30-12 (E1) P-L - BR
      C30-27 (IGT3) - C30-12 (E1) G-W - BR
      C29-26 (IGT4) - C30-12 (E1) P - BR
      C29-25 (IGT5) - C30-12 (E1) W-L - BR
      C30-28 (IGT6) - C30-12 (E1) L-B - BR
      C30-26 (IGT7) - C30-12 (E1) V - BR
      C30-25 (IGT8) - C30-12 (E1) LG - BR
      C30-6 (IGF1) - C30-12 (E1) G-R - BR Ignition coil (ignition confirmation signal) Engine switch on (IG) 4.5 to 5.5 V
      Idling Pulse generation
      (See waveform 7)
      C31-5 (IGF2) - C30-12 (E1) B-W - BR Ignition coil (ignition confirmation signal) Engine switch on (IG) 4.5 to 5.5 V
      Idling Pulse generation
      (See waveform 7)
      C30-18 (PRG) - C30-12 (E1) G-B - BR Purge VSV Engine switch on (IG) 11 to 14 V
      Idling Pulse generation
      (See waveform 8)
      G44-18 (SPD) - C30-12 (E1) R - BR Speed signal from combination meter Driving at 20 km/h (12 mph) Pulse generation
      (See waveform 9)
      G45-10 (STA) - C30-12 (E1) W - BR Starter signal Cranking 5.5 V or higher
      C29-2 (NSW) - C30-12 (E1) B - BR Park/neutral position switch Engine switch on (IG), shift lever position not in P or N 11 to 14 V
      Engine switch on (IG), shift lever in P or N Below 3.0 V
      G45-18 (STP) - C30-12 (E1) V - BR Stop light switch Brake pedal depressed 7.5 to 14 V
      Brake pedal released Below 1.5 V
      G44-8 (ST1-) - C30-12 (E1) B - BR Stop light switch
      (opposite to voltage at 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
      C31-20 (M+) - C31-10 (ME01) W - W-B Throttle actuator Idling with warm engine Pulse generation
      (See waveform 10)
      C30-29 (M-) - C31-10 (ME01) B - W-B Throttle actuator Idling with warm engine Pulse generation
      (See waveform 11)
      G45-8 (FC) - C30-12 (E1) G - BR Fuel pump control Engine switch on (IG) 11 to 14 V
      G44-3 (FPC) - C30-12 (E1) G - BR Fuel pump control Engine switch on (IG) Below 1.5 V
      G44-13 (W) - C30-12 (E1) V - BR MIL Engine switch on (IG) Below 3.0 V
      Idling 11 to 14 V
      G45-28 (TC) - C30-12 (E1) V - BR Terminal TC of DLC3 Engine switch on (IG) 11 to 14 V
      G45-29 (TACH) - C30-12 (E1) P - BR Engine speed Idling Pulse generation
      (See waveform 12)
      G45-19 (VPMP) - C30-12 (E1) L - BR Vent valve (built into canister pump module) Engine switch on (IG) 11 to 14 V
      G45-7 (MPMP) - C30-12 (E1) B - 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
      C28-15 (VCV1) - C29-7 (E2) P-L - W-R Power source for sensor (fixed voltage) Engine switch on (IG) 4.5 to 5.5 V
      C28-16 (VCV2) - C29-7 (E2) G - W-R Power source for sensor (fixed voltage) Engine switch on (IG) 4.5 to 5.5 V
      C29-1 (PPMP) - C29-7 (E2) V - W-R Canister pressure sensor (built into canister pump module) Engine switch on (IG) 3.3 to 4.0 V
      C29-28 (ALT) - C30-12 (E1) L - BR Generator Engine switch on (IG) 11 to 14 V
      G45-32 (CANH) - C30-12 (E1) R - BR CAN communication line Engine switch on (IG) Pulse generation
      (See waveform 13)
      G45-31 (CANL) - C30-12 (E1) W - BR CAN communication line Engine switch on (IG) Pulse generation
      (See waveform 14)
      G45-34 (CANP) - C30-12 (E1) BR - BR CAN communication line Engine switch on (IG) Pulse generation
      (See waveform 13)
      G45-33 (CANN) - C30-12 (E1) GR - BR CAN communication line Engine switch on (IG) Pulse generation
      (See waveform 14)
      C30-19 (ACIS) - C30-12 (E1) B-W - BR Vacuum switching valve for ACIS (Acoustic Control Induction System) operation signal Engine switch on (IG) 11 to 14 V
      C28-26 (AIRV) - C30-12 (E1) P - BR Air switching valve for secondary air injection system Engine switch on (IG) 11 to 14 V
      C29-23 (AIRP) - C30-12 (E1) V-R - BR Air pump control Engine switch on (IG) 11 to 14 V
      C30-20 (AIR1) - C30-12 (E1) L - BR Air switching valve for secondary air injection system Engine switch on (IG) 11 to 14 V
      C29-30 (AIDI) - C30-12 (E1) G - BR Diagnostic information signal for secondary air injection system Secondary air injection system operating Pulse generation
      (See waveform 16)
      G44-1 (AIP) - C29-7 (E2) V - W-R Secondary air injection system pressure signal Engine switch on (IG) 3.0 to 3.6 V
      G44-2 (AIP2) - C29-7 (E2) B - W-R Secondary air injection system pressure signal Engine switch on (IG) 3.0 to 3.6 V
      C28-9 (G2) - C28-10 (G2-) V - Y Camshaft position sensor Idling Pulse generation
      (See waveform 15)
      G45-26 (DI) - C30-12 (E1) GR - BR Fuel pump control Engine switch on (IG) 0 to 3.0 V
      C29-16 (PSP) - C30-12 (E1) LG-B - BR Power steering oil pressure switch Engine switch on (IG) 0.5 to 4.5 V
      C29-8 (PIM) - C29-7 (E2) G-B - W-R Manifold absolute pressure sensor Idling 1.2 to 2.0 V
      C28-23 (EGR1) - C30-12 (E1) W-R - BR EGR valve Engine racing Pulse generation
      (See waveform 18)
      C28-36 (EGR2) - C30-12 (E1) G-W - BR EGR valve Engine racing Pulse generation
      (See waveform 18)
      C28-30 (EGR3) - C30-12 (E1) L-Y - BR EGR valve Engine racing Pulse generation
      (See waveform 18)
      C28-24 (EGR4) - C30-12 (E1) G-R - BR EGR valve Engine racing Pulse generation
      (See waveform 18)
      G44-11 (ELS3) - C30-12 (E1) LG - BR Electric load Vehicle stationary, voltage inverter outputs more than 100W 11 to 14 V
      Vehicle stationary, voltage inverter outputs 100W or less 0 to 1.5 V

      HINT: 

      *: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

    2. Waveform 1:
      Fig 2: Identifying Waveform 1
      GTY133976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAMSHAFT TIMING OIL CONTROL VALVE

      Terminal No. (Symbol) Tool Setting Condition
      C29-19 (OC1+) - C29-20 (OC1-) 5 V/DIV., 1 msec./DIV. Idling
      C28-19 (OC2+) - C28-20 (OC2-) 5 V/DIV., 1 msec./DIV. Idling
      C29-21 (OE1+) - C29-22 (OE1-) 5 V/DIV., 1 msec./DIV. Idling
      C28-21 (OE2+) - C28-22 (OE2-) 5 V/DIV., 1 msec./DIV. Idling
    3. Waveform 2:
      Fig 3: Identifying Waveform 2
      GTY194056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      AIR FUEL RATIO SENSOR HEATER

      Terminal No. (Symbol) Tool Setting Condition
      CH1: C31-17 (HA1A) - C31-16 (E04) 5 V/DIV., 10 msec./DIV. Idling with warm engine
      CH2: C31-19 (HA2A) - C31-18 (E05) 5 V/DIV., 10 msec./DIV. Idling with warm engine

      HINT: 

      The wavelength varies in accordance with the engine operating conditions.

    4. Waveform 3:
      Fig 4: Identifying Waveform 3
      GTY136928Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      HEATED OXYGEN SENSOR

      Terminal No. (Symbol) Tool Setting Condition
      C28-2 (OX1B) - C28-1 (EX1B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor
      C28-4 (OX2B) - C28-3 (EX2B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 RPM for 2 minutes after warming up sensor

      HINT: 

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

    5. Waveform 4:
      Fig 5: Identifying Waveform 4
      GTY145152Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      FUEL INJECTOR NO. 1 (TO NO. 8) INJECTION SIGNAL

      Terminal No. (Symbol) Tool Setting Condition
      C31-6 (#10) - C31-14 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C31-1 (#20) - C31-14 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C31-7 (#30) - C31-14 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C31-2 (#40) - C31-14 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C31-8 (#50) - C31-14 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C31-3 (#60) - C31-14 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C31-9 (#70) - C31-14 (E01) 20 V/DIV., 20 msec./DIV. Idling
      C31-4 (#80) - C31-14 (E01) 20 V/DIV., 20 msec./DIV. Idling

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

    6. Waveform 5:
      Fig 6: Identifying Waveform 5
      GTY145057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      KNOCK SENSOR

      Terminal No. (Symbol) Tool Setting Condition
      C29-11 (KNK1) - C29-12 (EKNK) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      C29-5 (KNK2) - C29-6 (EKN2) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      C29-9 (KNK3) - C29-10 (EKN3) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine
      C29-3 (KNK4) - C29-4 (EKN4) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 RPM after warming up engine

      HINT: 

      • The wavelength becomes shorter as the engine speed increases.
      • The waveforms and amplitudes displayed differ slightly depending on the vehicle.
    7. Waveform 6:
      Fig 7: Identifying Waveform 6
      GTY284900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CRANKSHAFT POSITION SENSOR AND VVT SENSOR FOR INTAKE SIDE

      Terminal No. (Symbol) Tool Setting Condition
      (a) C28-6 (NE+) - C28-5 (NE-) 5 V/DIV., 20 msec./DIV. Idling after engine warmed up
      (b) C28-7 (VV1+) - C28-8 (VV1-) 5 V/DIV., 20 msec./DIV. Idling after engine warmed up
      (c) C28-12 (VV2+) - C28-11 (VV2-) 5 V/DIV., 20 msec./DIV. Idling after engine warmed up

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

    8. Waveform 7:
      Fig 8: Identifying Waveform 7
      GTY145151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      IGNITER IGT SIGNAL (FROM ECM TO IGNITER) AND IGNITER IGF SIGNAL (FROM IGNITER TO ECM)

      Terminal No. (Symbol) Tool Setting Condition
      (a) C30-24 (IGT1) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C29-27 (IGT2) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C30-27 (IGT3) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C29-26 (IGT4) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C29-25 (IGT5) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C30-28 (IGT6) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C30-26 (IGT7) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (a) C30-25 (IGT8) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (b) C30-6 (IGF1) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling
      (b) C31-5 (IGF2) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Idling

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

    9. Waveform 8:
      Fig 9: Identifying Waveform 8
      GTY124315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      PURGE VSV

      Terminal No. (Symbol) Tool Setting Condition
      C30-18 (PRG) - C30-12 (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.

    10. Waveform 9:
      Fig 10: Identifying Waveform 9
      GTY145136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      VEHICLE SPEED SIGNAL

      Terminal No. (Symbol) Tool Setting Condition
      G44-18 (SPD) - C30-12 (E1) 2 V/DIV., 20 msec./DIV. Driving at 20 km/h (12 mph)

      HINT: 

      The wavelength becomes shorter as the vehicle speed increases.

    11. Waveform 10:
      Fig 11: Identifying Waveform 10
      GTY141299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      THROTTLE ACTUATOR POSITIVE TERMINAL

      Terminal No. (Symbol) Tool Setting Condition
      C31-20 (M+) - C31-10 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine

      HINT: 

      The duty ratio varies depending on the throttle actuator operation.

    12. Waveform 11:
      Fig 12: Identifying Waveform 11
      GTY135981Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      THROTTLE ACTUATOR NEGATIVE TERMINAL

      Terminal No. (Symbol) Tool Setting Condition
      C30-29 (M-) - C31-10 (ME01) 5 V/DIV., 1 msec./DIV. Idling with warm engine

      HINT: 

      The duty ratio varies depending on the throttle actuator operation.

    13. Waveform 12:
      Fig 13: Identifying Waveform 12
      GTY147910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      ENGINE SPEED SIGNAL

      Terminal No. (Symbol) Tool Setting Condition
      G45-29 (TACH) - C30-12 (E1) 5 V/DIV., 10 msec./DIV. Idling

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

    14. Waveform 13:
      Fig 14: Identifying Waveform 13
      GTY125249Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAN COMMUNICATION SIGNAL (REFERENCE)

      Terminal No. (Symbol) Tool Setting Condition
      G45-32 (CANH) - C30-12 (E1) 1 V/DIV., 10 μsec./DIV. Engine stopped and engine switch on (IG)
      G45-34 (CANP) - C30-12 (E1) 1 V/DIV., 10 μsec./DIV. Engine stopped and engine switch on (IG)

      HINT: 

      The waveform varies depending on the CAN communication signal.

    15. Waveform 14:
      Fig 15: Identifying Waveform 14
      GTY138976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAN COMMUNICATION SIGNAL (REFERENCE)

      Terminal No. (Symbol) Tool Setting Condition
      G45-31 (CANL) - C30-12 (E1) 1 V/DIV., 10 μsec./DIV. Engine stopped and engine switch on (IG)
      G45-33 (CANN) - C30-12 (E1) 1 V/DIV., 10 μsec./DIV. Engine stopped and engine switch on (IG)

      HINT: 

      The waveform varies depending on the CAN communication signal.

    16. Waveform 15:
      Fig 16: Identifying Waveform 15
      GTY263573Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CRANKSHAFT POSITION SENSOR AND CAMSHAFT POSITION SENSOR

      Terminal No. (Symbol) Tool Setting Condition
      CH1: C28-6 (NE+) - C28-5 (NE-) 5 V/DIV., 20 msec./DIV. Idling after engine warmed up
      CH2: C28-9 (G2) - C28-10 (G2-) 5 V/DIV., 20 msec./DIV. Idling after engine warmed up

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

    17. Waveform 16:
      Fig 17: Identifying Waveform 16
      GTY122665Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TERMINAL DI OF AIR INJECTION CONTROL DRIVER

      Terminal No. (Symbol) Tool Setting Condition
      C29-30 (AIDI) - C30-12 (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. Refer to DTC P1613: Secondary Air Injection Driver Malfunction .

    18. Waveform 17:
      Fig 18: Identifying Waveform 17
      GTY276636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CRANKSHAFT POSITION SENSOR AND VVT SENSOR FOR EXHAUST SIDE

      Terminal No. (Symbol) Tool Setting Condition
      (a) C28-6 (NE+) - C28-5 (NE-) 5 V/DIV., 20 msec./DIV. Idling after engine warmed up
      (b) C28-13 (EV1+) - C28-14 (EV1-) 5 V/DIV., 20 msec./DIV. Idling after engine warmed up
      (c) C28-18 (EV2+) - C28-17 (EV2-) 5 V/DIV., 20 msec./DIV. Idling after engine warmed up

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

    19. Waveform 18:
      Fig 19: Identifying Waveform 18
      GTY180130Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      EGR VALVE

      Terminal No. (Symbol) Tool Setting Condition
      C28-23 (EGR1) - C30-12 (E1) 10 V/DIV., 0.5 msec./DIV. Repeating quick engine speed accelerations
      C28-36 (EGR2) - C30-12 (E1) 10 V/DIV., 0.5 msec./DIV. Repeating quick engine speed accelerations
      C28-30 (EGR3) - C30-12 (E1) 10 V/DIV., 0.5 msec./DIV. Repeating quick engine speed accelerations
      C28-24 (EGR4) - C30-12 (E1) 10 V/DIV., 0.5 msec./DIV. Repeating quick engine speed accelerations
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