2010 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE

Terminals Of ECM

  1. CHECK ECM 
    Fig 1: Identifying Terminals Of ECM Connectors
    GTY148669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A38-1 (BATT) - C53-81 (E1) L - W-B Battery (for 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) (for Intake Side of Bank 1) Idling Pulse generation
    (See waveform 1)
    C53-52 (OC2+) - C53-51 (OC2-) L-B - R-B Camshaft oil control valve (OCV) (for Intake Side of Bank 2) Idling Pulse generation
    (See waveform 1)
    C53-56 (OE1+) - C53-55 (OE1-) L-W - L-B Camshaft oil control valve (OCV) (for Exhaust Side of Bank 1) Idling Pulse generation
    (See waveform 1)
    C53-50 (OE2+) - C53-49 (OE2-) L-R - L-B Camshaft oil control valve (OCV) (for Exhaust Side of Bank 2) Idling Pulse generation
    (See 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) B-Y - B Power source of throttle position sensor (specific voltage) Engine switch on (IG) 4.5 to 5.5 V
    C53-78 (VTA1) - C53-79 (ETA) B-L - B Throttle position sensor (for engine control) Engine switch on (IG),
    Accelerator pedal fully released    		 0.5 to 1.1 V
    Engine switch on (IG),
    Accelerator pedal fully depressed    		 3.2 to 4.8 V
    C53-77 (VTA2) - C53-79 (ETA) B-R - B Throttle position sensor (for sensor malfunction detection) Engine switch on (IG),
    Accelerator pedal fully released    		 2.1 to 3.1 V
    Engine switch on (IG),
    Accelerator pedal fully depressed    		 4.6 to 5.0 V
    A38-55 (VPA) - A38-58 (EPA) R - W-L 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
    A38-56 (VPA2) - A38-60 (EPA2) GR-G - BR Accelerator pedal position sensor (for 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 (for 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 (for 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 with warm engine Pulse generation
    (See waveform 2)
    Engine switch on (IG) 11 to 14 V
    C53-20 (HA2A) - C53-21 (E05) G - W-B A/F sensor heater Idling with warm engine Pulse generation
    (See waveform 2)
    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 3.0 V
    Engine switch on (IG) 11 to 14 V
    C53-44 (HT2B) - C53-46 (E03) B - W-B Heated oxygen sensor heater Idling Below 3.0 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 waveform 3)
    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 waveform 3)
    C53-86 (#10) - C53-43 (E01) R-L - W-B Fuel injector Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 4)
    C53-109 (#20) - C53-43 (E01) L - W-B Fuel injector Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 4)
    C53-85 (#30) - C53-43 (E01) R-B - W-B Fuel injector Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 4)
    C53-108 (#40) - C53-43 (E01) Y - W-B Fuel injector Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 4)
    C53-84 (#50) - C53-43 (E01) G - W-B Fuel injector Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 4)
    C53-107 (#60) - C53-43 (E01) R - W-B Fuel injector Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 4)
    C53-83 (#70) - C53-43 (E01) W - W-B Fuel injector Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 4)
    C53-106 (#80) - C53-43 (E01) R-B - W-B Fuel injector Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 4)
    C53-94 (KNK1) - C53-93 (EKNK) R - G Knock sensor Engine speed maintained at 4000 rpm after warming up engine Pulse generation
    (See waveform 5)
    C53-117 (KNK2) - C53-116 (EKN2) W - B Knock sensor Engine speed maintained at 4000 rpm after warming up engine Pulse generation
    (See waveform 5)
    C53-96 (KNK3) - C53-95 (EKN3) W - B Knock sensor Engine speed maintained at 4000 rpm after warming up engine Pulse generation
    (See waveform 5)
    C53-119 (KNK4) - C53-118 (EKN4) R - G Knock sensor Engine speed maintained at 4000 rpm after warming up engine Pulse generation
    (See waveform 5)
    C53-92 (VV1+) - C53-91 (VV1-) R - Y Variable valve timing (VVT) sensor (for Intake Side of Bank 1) Idling Pulse generation
    (See waveform 6)
    C53-87 (VV2+) - C53-88 (VV2-) R - Y Variable valve timing (VVT) sensor (for Intake Side for Bank 2) Idling Pulse generation
    (See waveform 6)
    C53-69 (EV1+) - C53-68 (EV1-) R-L - Y Variable valve timing (VVT) sensor (for Exhaust Side of Bank 1) Idling Pulse generation
    (See waveform 17)
    C53-64 (EV2+) - C53-65 (EV2-) R-L - Y Variable valve timing (VVT) sensor (for Exhaust Side of Bank 2) Idling Pulse generation
    (See waveform 17)
    C53-110 (NE+) - C53-111 (NE-) W - G-W Crankshaft position sensor Idling Pulse generation
    (See waveform 6)
    C53-40 (IGT1) - C53-81 (E1) B-Y - W-B Ignition coil (ignition signal) Idling Pulse generation
    (See waveform 7)
    C53-33 (IGT2) - C53-81 (E1) L-B - W-B Ignition coil (ignition signal) Idling Pulse generation
    (See waveform 7)
    C53-37 (IGT3) - C53-81 (E1) B - W-B Ignition coil (ignition signal) Idling Pulse generation
    (See waveform 7)
    C53-34 (IGT4) - C53-81 (E1) L-B - W-B Ignition coil (ignition signal) Idling Pulse generation
    (See waveform 7)
    C53-35 (IGT5) - C53-81 (E1) G-R - W-B Ignition coil (ignition signal) Idling Pulse generation
    (See waveform 7)
    C53-36 (IGT6) - C53-81 (E1) G - W-B Ignition coil (ignition signal) Idling Pulse generation
    (See waveform 7)
    C53-38 (IGT7) - C53-81 (E1) G-W - W-B Ignition coil (ignition signal) Idling Pulse generation
    (See waveform 7)
    C53-39 (IGT8) - C53-81 (E1) G-B - W-B Ignition coil (ignition signal) Idling Pulse generation
    (See waveform 7)
    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 waveform 7)
    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 waveform 7)
    C53-63 (PRG) - C53-81 (E1) L-B - W-B Purge VSV Engine switch on (IG) 11 to 14 V
    Idling Pulse generation
    (See waveform 8)
    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 waveform 9)
    A38-46 (STA) - C53-81 (E1) R-B - W-B Starter signal Cranking 5.5 V or higher
    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 3.0 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) B-W - W-B Throttle actuator Idling with warm engine Pulse generation
    (See waveform 10)
    C53-18 (M-) - C53-82 (ME01) GR - W-B Throttle actuator Idling with warm engine Pulse generation
    (See waveform 11)
    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 (W) - C53-81 (E1) R-Y - W-B MIL Engine switch on (IG) Below 3.0 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 waveform 12)
    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 3.0 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 waveform 13)
    A38-11 (CANL) - C53-81 (E1) B - W-B CAN communication line Engine switch on (IG) Pulse generation
    (See waveform 14)
    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 waveform 16)
    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 waveform 16)
    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 waveform 15)
    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 higher
    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.

    1. WAVEFORM 1:
      Fig 2: Identifying Waveform 1
      GTY133976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAMSHAFT OIL CONTROL VALVE (OCV)

      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
    2. WAVEFORM 2:
      Fig 3: Identifying Waveform 2
      GTY227486Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      A/F SENSOR SIGNAL

      Terminal No. (Symbol) Tool Setting Condition
      C53-22 (HA1A) - C53-23 (E04) 5 V/DIV., 10 msec./DIV. Idling with warm engine
      C53-20 (HA2A) - C53-21 (E05) 5 V/DIV., 10 msec./DIV. Idling with warm engine

      HINT: 

      The wavelength varies in accordance with the engine operating condition.

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

      Terminal No. (Symbol) Tool Setting Condition
      C53-114 (OX1B) - C53-115 (EX1B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 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 2500 rpm for 2 minutes after warming up sensor

      HINT: 

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

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

      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

      HINT: 

      The wavelength becomes shorter as the engine speed increases.

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

      Terminal No. (Symbol) Tool Setting Condition
      C53-94 (KNK1) - C53-93 (EKNK) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 rpm after warming up engine
      C53-117 (KNK2) - C53-116 (EKN2) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 rpm after warming up engine
      C53-96 (KNK3) - C53-95 (EKN3) 1 V/DIV., 1 msec./DIV. Engine speed maintained at 4000 rpm after warming up engine
      C53-119 (KNK4) - C53-118 (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.
    6. WAVEFORM 6:
      Fig 7: Identifying Waveform 6
      GTY222039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CRANKSHAFT POSITION SENSOR AND VVT SENSOR FOR INTAKE SIDE

      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.

    7. 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) 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 8:
      Fig 9: Identifying Waveform 8
      GTY124315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      PURGE VSV

      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.

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

      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.

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

      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.

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

      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.

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

      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.

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

      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.

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

      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.

    15. WAVEFORM 15:
      Fig 16: Identifying Waveform 15
      GTY217988Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CRANKSHAFT POSITION SENSOR AND CAMSHAFT POSITION SENSOR

      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.

    16. 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
      C53-30 (AIDI) - C53-81 (E1) 5 V/DIV., 20 to 40 msec./DIV. Performing system check using Techstream (Secondary Air Injection Check)
      C53-29 (AID2) - C53-81 (E1) 5 V/DIV., 20 to 40 msec./DIV. Performing system check using Techstream (Secondary Air Injection Check)

      HINT: 

      The wavelength changes when the air injection control driver detects malfunctions in the air injection system. Refer to DTC P0412: Secondary Air Injection System Switching Valve "A" Circuit; DTC P0415: Secondary Air Injection System Switching Valve "B" Circuit .

    17. WAVEFORM 17:
      Fig 18: Identifying Waveform 17
      GTY227947Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CRANKSHAFT POSITION SENSOR AND VVT SENSOR FOR EXHAUST SIDE

      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.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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