SFI SYSTEM(w/o EGR System) TERMINALS OF ECM

  1. CHECK ECM

    A225776N06

    1. Measure the voltage according to the value(s) in the table below.

      Tip:

      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 assembly (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 assembly (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 assembly (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 assembly (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 4.75 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 assembly

      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 - B-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 assembly (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 assembly (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 assembly (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)

      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

      C29-28 (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-W - 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
      Tip:

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

    2. A280823E01

      Waveform 1:

      Table 1. 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. A172534E07

      Waveform 2:

      Table 2. 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
      Tip:

      The wavelength varies in accordance with the engine operating conditions.

    4. A280824E01

      Waveform 3:

      Table 3. 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
      Tip:

      In the Data List, item O2S B1S2 and O2S B2S2 show the ECM input values from the heated oxygen sensor.

    5. A280825E01

      Waveform 4:

      Table 4. Fuel Injector Assembly 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
      Tip:

      The wavelength becomes shorter as the engine speed increases.

    6. A085286E93

      Waveform 5:

      Table 5. 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
      Tip:

      • The wavelength becomes shorter as the engine speed increases.

      • The waveforms and amplitudes displayed differ slightly depending on the vehicle.

    7. A217926E01

      Waveform 6:

      Table 6. 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
      Tip:

      The wavelength becomes shorter as the engine speed increases.

    8. A280826E01

      Waveform 7:

      Table 7. Ignition Coil Assembly Signal (IGT and IGF Signal)

      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
      Tip:

      The wavelength becomes shorter as the engine speed increases.

    9. A218020E13

      Waveform 8:

      Table 8. Purge VSV

      Terminal No. (Symbol)

      Tool Setting

      Condition

      C30-18 (PRG) - C30-12 (E1)

      10 V/DIV., 20 msec./DIV.

      Idling
      Tip:

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

    10. A280828E01

      Waveform 9:

      Table 9. 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)
      Tip:

      The wavelength becomes shorter as the vehicle speed increases.

    11. A208000E06

      Waveform 10:

      Table 10. Throttle Actuator Positive Terminal Signal

      Terminal No. (Symbol)

      Tool Setting

      Condition

      C31-20 (M+) - C31-10 (ME01)

      5 V/DIV., 1 msec./DIV.

      Idling with warm engine
      Tip:

      The duty ratio varies depending on the throttle actuator operation.

    12. A245848E04

      Waveform 11:

      Table 11. Throttle Actuator Negative Terminal Signal

      Terminal No. (Symbol)

      Tool Setting

      Condition

      C30-29 (M-) - C31-10 (ME01)

      5 V/DIV., 1 msec./DIV.

      Idling with warm engine
      Tip:

      The duty ratio varies depending on the throttle actuator operation.

    13. A280831E01

      Waveform 12:

      Table 12. Engine Speed Signal

      Terminal No. (Symbol)

      Tool Setting

      Condition

      G45-29 (TACH) - C30-12 (E1)

      5 V/DIV., 10 msec./DIV.

      Idling
      Tip:

      The wavelength becomes shorter as the engine speed increases.

    14. A280870E01

      Waveform 13:

      Table 13. 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)
      Tip:

      The waveform varies depending on the CAN communication signal.

    15. A280871E01

      Waveform 14:

      Table 14. 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)
      Tip:

      The waveform varies depending on the CAN communication signal.

    16. A211721E01

      Waveform 15:

      Table 15. 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
      Tip:

      The wavelength becomes shorter as the engine speed increases.

    17. A255990E03

      Waveform 16:

      Table 16. Terminal DI of Air Injection Control Driver

      Terminal No. (Symbol)

      Tool Setting

      Condition

      C29-30 (AIDI) - C30-12 (E1)

      5 V/DIV., 50 msec./DIV.

      Performing system check using tester (Secondary Air Injection Check)
      Tip:

      The wavelength changes when the air injection control driver detects malfunctions in the air injection system (Click here).

    18. A217927E01

      Waveform 17:

      Table 17. 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
      Tip:

      The wavelength becomes shorter as the engine speed increases.