Terminals Of ECM [10/2016 - 10/2017]

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HINT: 

The standard 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 voltage for that pair of terminals, and displayed in the "Specified Condition" column.

The illustration above can be used as a reference to identify the ECM terminal locations.

1. *1: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
2. *2: for 2WD models.

1. WAVEFORM 1 
   Fig 1: Waveform 1

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   CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) OPERATION SIGNAL
   
   

   ECM Terminal Name	Between OC1+ and OC1-, or OC2+ and OC2-
   Tester Range	5 V/DIV., 1 ms./DIV.
   Condition	Idling

2. WAVEFORM 2 
   Fig 2: Waveform 2

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   CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) OPERATION SIGNAL
   
   

   ECM Terminal Name	Between OE1+ and OE1-, or OE2+ and OE2-
   Tester Range	5 V/DIV., 1 ms./DIV.
   Condition	Idling

3. WAVEFORM 3 
   Fig 3: Waveform 3

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   AIR FUEL RATIO SENSOR (SENSOR 1) HEATER OPERATION SIGNAL
   
   

   ECM Terminal Name	Between HA1A and E04, or HA2A and E05
   Tester Range	5 V/DIV., 10 ms./DIV.
   Condition	Idling

4. WAVEFORM 4 
   Fig 4: Waveform 4

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   HEATED OXYGEN SENSOR (SENSOR 2) SIGNAL
   
   

   ECM Terminal Name	Between OX1B and E2, or OX2B and E2
   Tester Range	0.2 V/DIV., 200 ms./DIV.
   Condition	Engine speed maintained at 2500 rpm for 2 minutes after warming up engine

   HINT: 

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

5. WAVEFORM 5 
   Fig 5: Waveform 5

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   FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION) SIGNAL
   
   

   ECM Terminal Name	Between #1 (to #6) and E1
   Tester Range	2 V/DIV., 20 ms./DIV.
   Condition	Idling with warm engine

   HINT: 

   • The wavelength becomes shorter as the engine speed increases.
   • When the direct injection injectors are operating, Direct is displayed for Injection Way of the Data List.
6. WAVEFORM 6 
   Fig 6: Waveform 6

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   FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) SIGNAL
   
   

   ECM Terminal Name	Between #10 (to #60) and E01
   Tester Range	20 V/DIV., 20 ms./DIV.
   Condition	Idling, engine coolant temperature 60°C or less

   HINT: 

   • The wavelength becomes shorter as the engine speed increases.
   • When the port injection injectors are operating, Port is displayed for Injection Way of the Data List.
7. WAVEFORM 7 
   Fig 7: Waveform 7

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   KNOCK CONTROL SENSOR SIGNAL
   
   

   ECM Terminal Name	Between KNK1 and EKNK, or KNK2 and EKN2
   Tester Range	1 V/DIV., 1 ms./DIV.
   Condition	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 condition.
8. WAVEFORM 8 
   Fig 8: Waveform 8

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   CRANKSHAFT POSITION SENSOR SIGNAL AND VVT SENSOR (FOR INTAKE CAMSHAFT) SIGNAL
   
   

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

   HINT: 

   The wavelength becomes shorter as the engine speed increases.

9. WAVEFORM 9 
   Fig 9: Waveform 9

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   CRANKSHAFT POSITION SENSOR SIGNAL AND VVT SENSOR (FOR EXHAUST CAMSHAFT) SIGNAL
   
   

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

   HINT: 

   The wavelength becomes shorter as the engine speed increases.

10. WAVEFORM 10 
    Fig 10: Waveform 10

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    IGNITION COIL ASSEMBLY SIGNAL (IGT AND IGF SIGNAL)
    
    

    ECM Terminal Name	CH1: IGT1, 3 or 5 and E1 CH2: IGF1 and E1
    	CH1: IGT2, 4 or 6 and E1 CH2: IGF2 and E1
    Tester Range	2 V/DIV., 20 ms./DIV.
    Condition	Idling with warm engine

    HINT: 

    The wavelength becomes shorter as the engine speed increases.

11. WAVEFORM 11 
    Fig 11: Waveform 11

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    PURGE VSV OPERATION SIGNAL
    
    

    ECM Terminal Name	Between PRG and E1
    Tester Range	10 V/DIV., 20 ms./DIV.
    Condition	Idling, under purge control

    HINT: 

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

12. WAVEFORM 12 
    Fig 12: Waveform 12

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    VEHICLE SPEED SIGNAL
    
    

    ECM Terminal Name	Between SPD and E1
    Tester Range	5 V/DIV., 20 ms./DIV.
    Condition	Driving at 20 km/h (12 mph)

    HINT: 

    The wavelength becomes shorter as the vehicle speed increases.

13. WAVEFORM 13 
    Fig 13: Waveform 13

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    THROTTLE ACTUATOR POSITIVE TERMINAL SIGNAL
    
    

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

    HINT: 

    The duty ratio varies depending on the throttle actuator operation.

14. WAVEFORM 14 
    Fig 14: Waveform 14

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    THROTTLE ACTUATOR NEGATIVE TERMINAL SIGNAL
    
    

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

    HINT: 

    The duty ratio varies depending on the throttle actuator operation.

15. WAVEFORM 15 
    Fig 15: Waveform 15

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    ENGINE SPEED SIGNAL
    
    

    ECM Terminal Name	Between TACH and E1
    Tester Range	5 V/DIV., 10 ms./DIV.
    Condition	Idling with warm engine

    HINT: 

    The wavelength becomes shorter as the engine speed increases.

16. WAVEFORM 16 
    Fig 16: Waveform 16

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    FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION) SIGNAL AND INJECTION CONFIRMATION SIGNAL
    
    

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

    HINT: 

    • The wavelength becomes shorter as the engine speed increases.
    • When the direct injection injectors are operating, Direct is displayed for Injection Way of the Data List.
17. WAVEFORM 17 
    Fig 17: Waveform 17

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    FUEL PUMP FOR HIGH PRESSURE SIDE SIGNAL (SPILL CONTROL VALVE)
    
    

    ECM Terminal Name	CH1: Between FPD and E1 CH2: Between FPF1 and E1
    Tester Range	2 V/DIV., 5 ms./DIV.
    Condition	Idling with warm engine

18. WAVEFORM 18 
    Fig 18: Waveform 18

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    CAN COMMUNICATION SIGNAL (REFERENCE)
    
    

    ECM Terminal Name	Between CANH and E1 Between CAN+ and E1
    Tester Range	1 V/DIV., 10 μs./DIV.
    Condition	Engine switch on (IG)

    HINT: 

    The waveform varies depending on the CAN communication signal.

19. WAVEFORM 19 
    Fig 19: Waveform 19

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    CAN COMMUNICATION SIGNAL (REFERENCE)
    
    

    ECM Terminal Name	Between CANL and E1 Between CAN- and E1
    Tester Range	1 V/DIV., 10 μs./DIV.
    Condition	Engine switch on (IG)

    HINT: 

    The waveform varies depending on the CAN communication signal.

20. WAVEFORM 20 
    Fig 20: Waveform 20

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    ENGINE SPEED SIGNAL
    
    

    ECM Terminal Name	Between NEO and E1
    Tester Range	1 V/DIV., 2 ms./DIV.
    Condition	Idling with warm engine

    HINT: 

    The wavelength becomes shorter as the engine speed increases.

21. WAVEFORM 21 
    COOLING FAN CONTROL SIGNAL
    
    

    ECM Terminal Name	Between RFC and E1
    Tester Range	1 V/DIV., 20 ms./DIV.
    Condition	Engine switch on (IG), A/C switch on (max cool)

    HINT: 

    The duty ratio varies depending on the engine coolant temperature.

    Fig 21: Waveform 21

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