Terminals Of ECM [09/2015 - 08/2017]

Fig 1: ECM Connector Terminal Identification

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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.

HINT: 

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

1. WAVEFORM 1:
   Fig 2: Waveform 1

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   CAMSHAFT OIL CONTROL VALVE (OCV)
   
   

   ECM Terminal Name	Tester Range	Condition
   Between OC1+ and OC1- Between OC2+ and OC2- Between OE1+ and OE1- Between OE2+ and OE2-	5 V/DIV., 1 msec./DIV.	Idling

2. WAVEFORM 2:
   Fig 3: Waveform 2

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   A/F SENSOR HEATER SIGNAL
   
   

   ECM Terminal Name	Tester Range	Condition
   Between HA1A and E04 Between HA2A and 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: Waveform 3

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   HEATED OXYGEN SENSOR
   
   

   ECM Terminal Name	Tester Range	Condition
   Between OX1B and EX1B Between OX2B and 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: Waveform 4

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   INJECTOR NO. 1 (TO NO. 8) INJECTION SIGNAL
   
   

   ECM Terminal Name	Tester Range	Condition
   Between #10 and E01 Between #20 and E01 Between #30 and E01 Between #40 and E01 Between #50 and E01 Between #60 and E01 Between #70 and E01 Between #80 and E01	20 V/DIV., 20 msec./DIV.	Idling

   HINT: 

   The wavelength becomes shorter as the engine speed increases.

5. WAVEFORM 5:
   Fig 6: Waveform 5

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   KNOCK SENSOR
   
   

   ECM Terminal Name	Tester Range	Condition
   Between KNK1 and EKNK Between KNK2 and EKN2 Between KNK3 and EKN3 Between KNK4 and 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: Waveform 6

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   CRANKSHAFT POSITION SENSOR AND VVT SENSOR FOR INTAKE SIDE
   
   

   ECM Terminal Name	Tester Range	Condition
   (a) Between NE+ and NE- (b) Between VV1+ and VV1- (c) Between VV2+ and 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: Waveform 7

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   IGNITION COIL ASSEMBLY SIGNAL (IGT AND IGF SIGNAL)
   
   

   ECM Terminal Name	Tester Range	Condition
   CH1: IGT1, 4, 6 or 7 and E1 CH2: IGF1 and E1	2 V/DIV., 20 msec./DIV.	Idling
   CH1: IGT2, 3, 5 or 8 and E1 CH2: IGF2 and E1

   HINT: 

   The wavelength becomes shorter as engine speed increases.

8. WAVEFORM 8:
   Fig 9: Waveform 8

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   PURGE VSV
   
   

   ECM Terminal Name	Tester Range	Condition
   Between PRG and E1	10 V/DIV., 20 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: Waveform 9

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   VEHICLE SPEED SIGNAL
   
   

   ECM Terminal Name	Tester Range	Condition
   Between SPD and 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: Waveform 10

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    THROTTLE ACTUATOR POSITIVE TERMINAL
    
    

    ECM Terminal Name	Tester Range	Condition
    Between M+ and 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: Waveform 11

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    THROTTLE ACTUATOR NEGATIVE TERMINAL
    
    

    ECM Terminal Name	Tester Range	Condition
    Between M- and 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: Waveform 12

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    ENGINE SPEED SIGNAL
    
    

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

    HINT: 

    The wavelength becomes shorter as the engine speed increases.

13. WAVEFORM 13:
    Fig 14: Waveform 13

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    CAN COMMUNICATION SIGNAL (REFERENCE)
    
    

    ECM Terminal Name	Tester Range	Condition
    Between CANH and E1 Between CANP and 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: Waveform 14

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    CAN COMMUNICATION SIGNAL (REFERENCE)
    
    

    ECM Terminal Name	Tester Range	Condition
    Between CANL and E1 Between CANN and 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: Waveform 15

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    CRANKSHAFT POSITION SENSOR AND CAMSHAFT POSITION SENSOR
    
    

    ECM Terminal Name	Tester Range	Condition
    CH1: Between NE+ and NE- CH2: Between G2+ and VV1-	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: Waveform 16

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    TERMINAL DI OF AIR INJECTION CONTROL DRIVER
    
    

    ECM Terminal Name	Tester Range	Condition
    Between AIDI and E1 Between AID2 and E1	5 V/DIV., 50 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 [09/2015 - ] ).

17. WAVEFORM 17:
    Fig 18: Waveform 17

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    CRANKSHAFT POSITION SENSOR AND VVT SENSOR FOR EXHAUST SIDE
    
    

    ECM Terminal Name	Tester Range	Condition
    (a) Between NE+ and NE- (b) Between EV1+ and VV1- (c) Between EV2+ and VV2-	5 V/DIV., 20 msec./DIV.	Idle after engine warmed up

    HINT: 

    The wavelength becomes shorter as engine speed increases.

18. WAVEFORM 18:
    Fig 19: Waveform 18

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    ENGINE SPEED SIGNAL
    
    

    ECM Terminal Name	Tester Range	Condition
    Between NEO and E1	1 V/DIV., 2 msec./DIV.	Idle after engine warmed up