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Terminals Of ECM

Fig 1: Identifying Connector Terminals Of ECM
G05751406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT

The standard normal voltage between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the 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 REFERENCE CHART

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
A5-7 (BATT) - E6-1 (E1) L - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
E3-1 (+BM) - E6-1 (E1) Y-B - W-B Power source of throttle actuator Always 11 to 14 V
A5-8 (IGSW) - E6-1 (E1) B-W - W-B Engine switch Engine switch on (IG) 11 to 14 V
A6-2 (+B) - E6-1 (E1) B-R - W-B Power source of ECM Engine switch on (IG) 11 to 14 V
A6-1 (+B2)-E6-1 (E1) B-R - W-B Power source of ECM Engine switch on (IG) 11 to 14 V
E4-4 (OE1+)-E4-3 (OE1-) R - L-W Camshaft timing oil control valve (OCV) (exhaust side for bank 1) Idling Pulse generation (see  1waveform 1)
E5-18 (OE2+) - E5-28 (OE2-) B-W - Y-B Camshaft timing oil control valve (exhaust side for bank 2) Idling Pulse generation (see  1waveform 1)
A5-3 (MREL) - E6-1 (E1) Y - W-B EFI relay Engine switch on (IG) 11 to 14 V
E3-18 (VC) - E3-28 (E2) L - BR Power source for sensor (specific voltage) Engine switch on (IG) 4 5 to 5 0 V
E3-25 (VG) - E3-24 (E2G) B-R - B-W Mass air flow meter Idling, Shift lever in P or N, A/C switch OFF 0 5 to 3 0 V
E3-22 (THA) - E3-28 (E2) B-L - BR Intake air temperature sensor Idling, Intake air temperature (bank 1) 0 to 80°C (32 to 176°F) 0 5 to 3 4 V
E3-19 (THW) - E3-28 (E2) R-L - BR Engine coolant temperature sensor Idling, Engine coolant temperature 60 to 80°C (140 to 176°F) 0 2 to 1 0 V
E4-34 (VCTA) - E4-35 (ETA) R - W Power source for throttle position sensor (specific voltage) Engine switch on (IG) 4 5 to 5 0 V
E4-26 (VTA) - E4-35 (ETA) G-Y - W Throttle position sensor (for 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
E4-27 (VTA2) - E4-35 (ETA) L-B - W Throttle position sensor (for sensor malfunction detection) Engine switch on (IG), Accelerator pedal released 2 1 to 3 1 V
Engine switch on (IG), Accelerator pedal released 4 5 to 5 0 V
A5-29 (VPA) - A5-20 (EPA) L-W - L-Y 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 depressed 2 6 to 4 5 V
A5-28 (VPA2) - A5-21 (EPA2) P-L - G-B 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 depressed 3 4 to 5 0 V
A5-23 (VCPA) - A5-20 (EPA) P - L-Y Power source of accelerator pedal position sensor (for VPA) Engine switch on (IG) 4 5 to 5 0 V
A5-22 (VCP2) - A5-21 (EPA2) G-R - G-B Power source of accelerator pedal position sensor (for VPA2) Engine switch on (IG) 4 5 to 5 0 V
E6-5 (HA1A) - E6-4 (E04)
E6-6 (HA2A) - A5-1 (E05)		 B-R - W-B
B-R - W-B		 Air fuel ratio sensor heater Engine switch on (IG) 11 to 14 V
Idling Pulse generation (see  2waveform 2)
E5-23 (A1A+) - E6-1 (E1) R - W-B Air fuel ratio sensor Engine switch on (IG) 3 3 V*
E5-21 (A2A+) - E6-1 (E1) B - W-B Air fuel ratio sensor Engine switch on (IG) 3 3 V*
E5-22 (A1A-) - E6-1 (E1) G - W-B Air fuel ratio sensor Engine switch on (IG) 2 9 V*
E5-20 (A2A-) - E6-1 (E1) W - W-B Air fuel ratio sensor Engine switch on (IG) 2 9 V*
A6-4 (HT1B) - A6-4 (E03)
A6-3 (HT2B) - A6-4 (E03)		 L-R - W-B
L-W - W-B		 Heated oxygen sensor heater Engine switch on (IG) 11 to 14 V
Idling Below 3 0 V
A6-26 (OX1B) - E3-28 (E2)
A6-27 (OX2B) - E3-28 (E2)		 R - BR
B - BR		 Heated oxygen sensor Maintain engine speed at 2500 rpm for 2 minutes after warming up sensor Pulse generation (see  3waveform 3)
E5-17 (#10) - E6-1 (E1) L - W-B Injector for port injection Engine switch on (IG) 11 to 14 V
E4-11 (#20) - E6-1 (E1) G - W-B Idling Pulse generation (see  4waveform 4)
E5-16 (#30) - E6-1 (E1) W - W-B
E4-10 (#40) - E6-1 (E1) GR - W-B
E5-15 (#50) - E6-1 (E1) Y - W-B
E4-9 (#60) - E6-1 (E1) L - W-B
E5-14 (#70) - E6-1 (E1) R - W-B
E4-8 (#80) - E6-1 (E1) V - W-B
E6-20 (#1) - E6-1 (E1) G-W - W-B Injector for direct injection Engine switch on (IG) 0 to 5 V
E6-10 (#2) - E6-1 (E1) L - W-B Idling Pulse generation (see  5waveform 5)
E6-9 (#3) - E6-1 (E1) R-B - W-B
E6-19 (#4) - E6-1 (E1) W-R - W-B
E6-8 (#5) - E6-1 (E1) G - W-B
E6-18 (#6) - E6-1 (E1) R-W - W-B
E6-17 (#7) - E6-1 (E1) W-L - W-B
E6-7 (#8) - E6-1 (E1) Y-B - W-B
E4-13 (INJ1) - E6-1 (E1) P-L - W-B Fuel injector for direct injection confirmation signal Idling Pulse generation (see  5waveform 5)
E4-12 (INJ2) - E6-1 (E1) R-B - W-B
E4-15 (INJ3) - E6-1 (E1) R-L - W-B Fuel injector for direct injection confirmation signal Idling Pulse generation (see  5waveform 5)
E4-14 (INJ4) - E6-1 (E1) LG - W-B
E6-26 (KNK1) - E6-33 (EKNK) W - B Knock sensor (for bank 1 sensor D Maintain engine speed at 4000 rpm after warming up Pulse generation (see  6waveform 6)
E6-25 (KNK2) - E6-32 (EKN2) G - R Knock sensor (for bank 2 sensor 1) Maintain engine speed at 4000 rpm after warming up Pulse generation (see  6waveform 6)
E6-24 (KNK3) - E6-31 (ENK3) R - W Knock sensor (for bank 1 sensor 2) Maintain engine speed at 4000 rpm after warming up Pulse generation (see  6waveform 6)
E6-23 (KNK4) - E6-30 (ENK4) B - G Knock sensor (for bank 2 sensor 2) Maintain engine speed at 4000 rpm after warming up Pulse generation (see  6waveform 6)
E4-25 (VV1+) - E4-33 (VV1-) B-R - R Variable valve timing (VVT) sensor (intake side for bank 1) Idling Pulse generation (see  7waveform 7)
E5-19 (VV2+) - E5-29 (VV2-) R - W Variable valve timing (VVT) sensor (intake side for bank 2) Idling Pulse generation (see  7waveform 7)
E3-26 (EV1+) - E3-33 (EV1-) B - Y-R Variable valve timing (VVT) sensor (exhaust side for bank 1) Idling Pulse generation (see  8waveform 8)
E6-22 (EV2+) - E6-29 (EV2-) Y - P Variable valve timing (VVT) sensor (exhaust side for bank 2) Idling Pulse generation (see  8waveform 8)
E4-24 (G2+) - E4-32 (G2-) R-W - Y Camshaft position sensor Idling Pulse generation (see  9waveform 9)
E3-27 (NE+) - E3-34 (NE-) W - R Crankshaft position sensor Idling Pulse generation (see  7waveform 7,  88,  99)
E5-27 (IGT1) - E6-1 (E1) G-W - W-B Ignition coil (ignition signal) Idling Pulse generation (see  10waveform 10)
E4-23 (IGT2) - E6-1 (E1) L-R - W-B
E5-26 (IGT3) - E6-1 (E1) L-Y - W-B
E4-22 (IGT4) - E6-1 (E1) B-Y - W-B
E5-25 (IGT5) - E6-1 (E1) P - W-B
E4-21 (IGT6) - E6-1 (E1) R-L - W-B
E5-24 (IGT7) - E6-1 (E1) P-L - W-B
E4-20 (IGT8) - E6-1 (E1) B-W - W-B
E5-32 (IGF1) - E6-1 (E1)
E4-28 (IGF2) - E6-1 (E1)		 LG - W-B
G-B - W-B		 Ignition coil (ignition confirmation signal) Engine switch on (IG) 4 5 to 5 0 V
Idling Pulse generation (see  10waveform 10)
E3-17 (PRG) - E6-1 (E1) R-Y - W-B Purge VSV Engine switch on (IG) 11 to 14 V
Idling Pulse generation (see  11waveform 11)
A5-24 (SPD) - E6-1 (E1) Y-G - W-B Speed signal from combination meter Engine switch on (IG), Rotate driving wheel slowly Pulse generation (see  12waveform 12)
A6-20 (STA) - E6-1 (E1) L-R - W-B STARTER relay operation signal Cranking 11 to 14 V
A5-2 (STAR) - E6-1 (E1) L-Y - W-B STARTER relay drive signal Engine switch on (IG), Shift lever in any position other than P or N 11 to 14 V
Cranking, Shift lever in P or N 0 to 3 0 V
A5-27 (STSW) - E6-1 (E1) Y-B - W-B Engine cranking required signal Cranking, Shift lever in P or N 6 0 V or more
A5-13 (STP) - E6-1 (E1) R-B - W-B Stop light switch Brake pedal depressed 7 5 to 14 V
Brake pedal released Below 1 5 V
A5-12 (ST1-) - E6-1 (E1) G-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
E4-7(M+) - E4-5 (ME01) W - W-B Throttle actuator Idling with warm engine Pulse generation (see  14waveform 14)
E4-6 (M-) - E4-5 (ME01) B - W-B Throttle actuator Idling with warm engine Pulse generation (see  13waveform 13)
A5-5 (FC) - E6-1 (E1) R-G - W-B C/OPN relay Engine switch on (IG) 11 to 14 V
Idling 0 to 3 0 V
A5-6 (FPR) - E6-1 (E1) R-W - W-B F/PMP relay Engine switch on (IG) 11 to 14 V
A5-11 (W) - E6-1 (E1) R-L - W-B MIL Engine switch on (IG) Below 3 0 V
Idling 0 to 14 V
A6-21 (TC) - E6-1 (E1) V - W-B Terminal TC of DLC3 Engine switch on (IG) 11 to 14 V
A5-15 (TACH) - E6-1 (E1) R-W - W-B Engine speed Idling Pulse generation (see  15waveform 15)
E3-16 (VPMP) - E6-1 (E1) L-R - W-B Vent valve (built into canister pump module) Engine switch on (IG) 11 to 14 V
E3-15 (MPMP) - E6-1 (E1) P - W-B Leak detection pump (built into canister pump module) Leak detection pump OFF 0 to 3 0 V
Leak detection pump ON 11 to 14 V
E3-31 (PPMP) - E3-28 (E2) LG - BR Canister pressure sensor (built into canister pump module) Engine switch on (IG) 3 to 3 6 V
E5-10 (FPF1) - E6-1 (E1) V - W-B Fuel pump (for high pressure) (spill control valve) (bank 1) Idling Pulse generation (see  16waveform 16)
E5-11 (FPD) - E6-1 (E1) R-L - W-B Fuel pump (for high pressure) (spill control valve) (bank 1) Idling Pulse generation (see  16waveform 16)
E5-12 (FPF2) - E6-1 (E1) GR - W-B Fuel pump (for high pressure) (spill control valve) (bank 2) Idling Pulse generation (see  17waveform 17)
E5-13 (FPD2) - E6-1 (E1) L-Y - W-B Fuel pump (for high pressure) (spill control valve) (bank 2) Idling Pulse generation (see  17waveform 17)
E6-27 (PR) - E3-28 (E2) L-Y - BR Fuel pressure sensor Idling 1 8 to 2 3 V
A6-14 (CANH) - E6-1 (E1) B - W-B CAN communication line Engine switch on (IG) Pulse generation (see  18waveform 18)
A6-13 (CANL) - E6-1 (E1) W - W-B CAN communication line Engine switch on (IG) Pulse generation (see  19waveform 19)
E3-8 (AICV) - E6-1 (E1) GR - W-B VSV for air intake control valve operation signal Engine switch on (IG) 11 to 14 V
A6-7 (SFTD) - E6-1 (E1) R-B - W-B Down-shift position switch signal Engine switch on (IG) and shift lever in S 11 to 14 V
Engine switch on (IG) and shift lever "-" position (down-shift) Below 1 V
A6-8 (SFTU) - E6-1 (E1) Y - W-B Up-shift position switch signal Engine switch on (IG) and shift lever in S 11 to 14 V
Engine switch on (IG) and shift lever "+" position (upshift) Below 1 V
A6-16 (S) - E6-1 (E1) W-G - W-B S shift position switch signal Engine switch on (IG) and shift lever in S 11 to 14 V
Engine switch on (IG) and shift lever not in S Below 1 V
A6-9 (CAN-) - E6-1 (E1) W - W-B Communication signal with TCM Engine switch on (IG) Pulse generation
A6-10 (CAN+) - E6-1 (E1) B - W-B Communication signal with TCM Engine switch on (IG) Pulse generation
A6-19 (ACCR) - E6-1 (E1) W-L - W-B ACC relay cut signal Engine switch on (IG) → Cranking 11 to 14 V → Below 1 V
A6-29 (NSW) - E6-1 (E1) L - W-B Park/Neutral position switch Engine switch on (IG), shift lever in P or N Below 3 0 V
Engine switch on (IG), Shift lever in any position except P or N 11 to 14 V
A5-4 (IREL) - E6-1 (E1) R-L - W-B INJ, INJ2 relay Engine switch on (IG) 11 to 14 V
E6-11 (R) - E6-1 (E1) G - W-B Park/Neutral position switch signal Engine switch on (IG) and Shift lever in R 11 to 14 V
Engine switch on (IG) and Shift lever not in R Below 1 V
E6-12(P) - E6-1 (E1) W - W-B Park/Neutral position switch signal Engine switch on (IG) and Shift lever in P 11 to 14 V
Engine switch on (IG) and Shift lever not in P Below 1 V
E6-13 (N) - E6-1 (E1) G-R - W-B Park/Neutral position switch signal Engine switch on (IG) and Shift lever in N 11 to 14 V
Engine switch on (IG) and Shift lever not in N Below 1 V
E6-14 (D) - E6-1 (E1) G-Y - W-B Park/Neutral position switch signal Engine switch on (IG) and Shift lever in D 11 to 14 V
Engine switch on (IG) and Shift lever not in D Below 1 V
A5-25 (KSW) - E6-1 (E1) L-R - W-B Park/Neutral position switch signal Engine switch off → on (IG) 0 to 3 0 V
E5-9 (EMD1) - E6-1 (E1) W-R - W-B Camshaft timing control motor signal Idling Pulse generation (see  20waveform 20)
E4-31 (EMD2) - E6-1 (E1) W-R - W-B Camshaft timing control motor signal Idling Pulse generation (see  20waveform 20)
E5-30 (EMR1) - E6-1 (E1) L-B - W-B Camshaft timing control motor signal Idling Pulse generation (see  21waveform 21)
E4-29 (EMR2) - E6-1 (E1) G-W - W-B Camshaft timing control motor signal Idling Pulse generation (see  21waveform 21)
E5-8 (EDT1) - E6-1 (E1) B-L - W-B Camshaft timing control motor signal Idling Pulse generation (see  22waveform 22)
E4-16 (EDT2) - E6-1 (E1) G-R - W-B Camshaft timing control motor signal Idling Pulse generation (see  22waveform 22)
E5-31 (EMF1) - E6-1 (E1) G-R - W-B Camshaft timing control motor signal Idling 0 3 to 1 3 V
E4-30 (EMF2) - E6-1 (E1) Y-B - W-B Camshaft timing control motor signal Idling 0 3 to 1 3 V
HINT
* The ECM terminal voltage is constant regardless of the output voltage from the sensor.
  1. WAVEFORM 1 

    Camshaft Timing Oil Control Valve (Exhaust Side) 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between OE1+ and OE1- or OE2+ and OE2-
    Tester Range 5 V/DIV, 1 msec /DIV
    Condition Idling with warm engine
    Fig 2: Identifying Waveform 1
    G04942634Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. WAVEFORM 2 

    Air Fuel Ratio Sensor Heater 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name CH1 Between HA1A and E04
    CH2 Between HA2A and E05
    Tester Range 5 V/DIV, 10 msec /DIV
    Condition Idling with warm engine

    HINT

    The wavelength becomes shorter as the engine rpm increases.

    Fig 3: Identifying Waveform 2
    G04942635Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. WAVEFORM 3 

    Heated Oxygen Sensor 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between OX1B and E2 or OX2B and E2
    Tester Range 0 2 V/DIV, 200 msec /DIV
    Condition Engine speed maintained at 2500 rpm for 2 minutes after warming up

    HINT

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

    Fig 4: Identifying Waveform 3
    G04942636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. WAVEFORM 4 

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

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between #10 (to #80) and E1
    Tester Range 5 V/DIV, 5 msec /DIV
    Condition Idling and engine coolant temperature 60°C or less

    HINT

    The wavelength becomes shorter as the engine rpm increases

    Fig 5: Identifying Waveform 4
    G04942637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. WAVEFORM 5 

    Injector for Direct Injection No. 1 (to No. 8) Injection Signal and Injection Confirmation Signal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name CH1 Between #1 or #6 and E1
    CH2 Between INJ1 and E1
    CH1 Between #4 or #7 and E1
    CH2 Between INJ2 and E1
    CH1 Between #5 or #8 and E1
    CH2 Between INJ3 and E1
    CH1 Between #2 or #3 and E1
    CH2 Between INJ4 and E1
    Tester Range 2 V/DIV, 20 msec /DIV
    Condition Idling with warm engine

    HINT

    The wavelength becomes shorter as the engine rpm increases.

    Fig 6: Identifying Waveform 5
    G04942638Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. WAVEFORM 6 Knock Sensor 
    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between KNK1 and EKNK
    Between KNK2 and EKN2
    Between KNK3 and ENK3
    Between KNK4 and ENK4
    Tester Range 0 01 to 10 V/DIV, 0 01 to 10 msec /DIV
    Condition Engine speed maintained at 4000 rpm after warming up engine
    Fig 7: Identifying Waveform 6
    G04942639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT.

    • The wavelength becomes shorter as the engine rpm increases.
    • The waveforms and amplitudes displayed differ slightly depending on the vehicle.
  7. WAVEFORM 7 

    Crankshaft Position Sensor and VVT Sensors for Intake Side 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name
    1. Between NE+ and NE-
    2. Between VV1+ and VV1-
    3. Between VV2+ and VV2-
    Tester Range 5 V/DIV, 20 msec /DIV
    Condition Idling with warm engine

    HINT.

    The wavelength becomes shorter as the engine rpm increases.

    Fig 8: Identifying Waveform 7
    G04942640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. WAVEFORM 8 

    Crankshaft Position Sensor and VVT Sensors for Exhaust Side 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name
    1. Between NE+ and NE-
    2. Between EV1+ and EV1-
    3. Between EV2+ and EV2-
    Tester Range 5 V/DIV, 20 msec/DIV
    Condition Idling with warm engine

    HINT.

    The wavelength becomes shorter as the engine rpm increases.

    Fig 9: Identifying Waveform 8
    G04942641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. WAVEFORM 9 

    Crankshaft Position Sensor and Camshaft Position Sensor 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name CH1 Between NE+ and NE-
    CH2 Between G2+ and G2-
    Tester Range 5 V/DIV, 20 msec/DIV
    Condition Idling with warm engine

    HINT.

    The wavelength becomes shorter as the engine rpm increases

    Fig 10: Identifying Waveform 9
    G04942642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. WAVEFORM 10 

    Igniter IGT Signal (from ECM to Igniter) and Igniter IGF Signal (from Igniter to ECM) 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name CH1 Between IGT (1 to 8) and E1
    CH2 Between IGF1 and E1 or IGF2 and E1
    Tester Range 2 V/DIV, 20 msec/DIV
    Condition Idling with warm engine

    HINT.

    The wavelength becomes shorter as the engine rpm increases

    Fig 11: Identifying Waveform 10
    G04942643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. WAVEFORM 11 

    Purge VSV 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between PRG and E1
    Tester Range 10 V/DIV, 20 msec/DIV
    Condition Idling with warm engine

    HINT

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

    Fig 12: Identifying Waveform 11
    G04942644Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. WAVEFORM 12 

    Vehicle Speed Signal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between SPD and E1
    Tester Range 2 V/DIV, 20 msec/DIV
    Condition Driving at 12 mph (20 km/h)

    HINT.

    The wavelength becomes shorter as the vehicle speed increases

    Fig 13: Identifying Waveform 12
    G04942645Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. WAVEFORM 13 

    Throttle Actuator Negative Terminal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between M- and ME01
    Tester Range 5 V/DIV, 1 msec /DIV
    Condition Idling with warm engine

    HINT

    The duty ratio varies depending on the throttle actuator operation

    Fig 14: Identifying Waveform 13
    G04942646Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. WAVEFORM 14 

    Throttle Actuator Positive Terminal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between M+ and ME01
    Tester Range 5 V/DIV, 1 msec/DIV
    Condition Idling with warm engine

    HINT

    The duty ratio varies depending on the throttle actuator operation

    Fig 15: Identifying Waveform 14
    G04942647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. WAVEFORM 15 

    Engine Speed Signal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between TACH and E1
    Tester Range 5 V/DIV, 10 msec/DIV
    Condition Idling

    HINT.

    The wavelength becomes shorter as the engine rpm increases

    Fig 16: Identifying Waveform 15
    G04942648Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. WAVEFORM 16 

    Fuel Pump for High Pressure (Spill Control Valve) (Bank 1) 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name CH1 Between FPD and E1
    CH2 Between FPF1 and E1
    Tester Range 2 V/DIV, 5 msec/DIV
    Condition Idling with warm engine
    Fig 17: Identifying Waveform 16
    G04942649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. WAVEFORM 17 

    Fuel Pump for High Pressure (Spill Control Valve) (Bank 2) 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name CH1 Between FPD2 and E1
    CH2 Between FPF2 and E1
    Tester Range 2 V/DIV, 5 msec/DIV
    Condition 1200 rpm with warm engine
    Fig 18: Identifying Waveform 17
    G04942650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. WAVEFORM 18 

    CAN Communication Signal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between CANH and E1
    Tester Range 1 V/DIV, 10 μsec/DIV
    Condition Engine stopped and engine switch on (IG)

    HINT

    The waveform varies depending on the CAN communication signal

    Fig 19: Identifying Waveform 18
    G04942651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. WAVEFORM 19 

    CAN Communication Signal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between CANL and E1
    Tester Range 1 V/DIV, 10 μsec/DIV
    Condition Engine stopped and engine switch on (IG)

    HINT.

    The waveform varies depending on the CAN communication signal

    Fig 20: Identifying Waveform 19
    G04942652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. WAVEFORM 20 

    Camshaft Timing Control Motor EMD Signal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between EMD1 and E1 or EMD2 and E1
    Tester Range 2 V/DIV, 100 msec/DIV
    Condition Idling with warm engine

    HINT.

    The wavelength becomes shorter as the engine rpm increases.

    Fig 21: Identifying Waveform 20
    G04942655Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. WAVEFORM 21 

    Camshaft Timing Control Motor EMR Signal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between EMR1 and E1 or EMR2 and E1
    Tester Range 2 V/DIV, 5 msec /DIV
    Condition Idling with warm engine

    HINT

    The wavelength becomes shorter as the engine rpm increases

    Fig 22: Identifying Waveform 21
    G04942656Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. WAVEFORM 22 

    Camshaft Timing Control Motor EDT Signal 

    WAVEFORM REFERENCE CHART

    ECM Terminal Name Between EDT1 and E1 or EDT2 and E1
    Tester Range 1 V/DIV, 5 msec/DIV
    Condition Idling with warm engine

    HINT:

    The wavelength becomes shorter as the engine rpm increases

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