Terminals Of ECM [10/2015 - 08/2019]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT: 

The standard voltage, resistance and waveform between each pair of the ECM assembly terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM assembly terminal locations.

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

1. WAVEFORM 1 
   Fig 1: Waveform 1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   IGNITION COIL ASSEMBLY SIGNAL (IGT AND IGF SIGNAL)
   
   

   ECM Assembly 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.

2. WAVEFORM 2 
   Fig 2: Waveform 2

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   EGR VALVE ASSEMBLY SIGNAL (EGR1, EGR3)
   
   

   ECM Assembly Terminal Name	CH1: EGR1 and E1 CH2: EGR3 and E1
   Tester Range	10 V/DIV., 20 ms./DIV.
   Condition	EGR valve operating

3. WAVEFORM 3 
   Fig 3: Waveform 3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   EGR VALVE ASSEMBLY SIGNAL (EGR2, EGR4)
   
   

   ECM Assembly Terminal Name	CH1: EGR2 and E1 CH2: EGR4 and E1
   Tester Range	10 V/DIV., 20 ms./DIV.
   Condition	EGR valve operating

4. WAVEFORM 4 
   Fig 4: Waveform 4

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION) SIGNAL AND INJECTION CONFIRMATION SIGNAL
   
   

   ECM Assembly 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.
5. WAVEFORM 5 
   Fig 5: Waveform 5

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   AIR FUEL RATIO SENSOR (SENSOR 1) HEATER OPERATION SIGNAL
   
   

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

6. WAVEFORM 6 
   Fig 6: Waveform 6

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   CAM TIMING OIL CONTROL SOLENOID ASSEMBLY OPERATION SIGNAL
   
   

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

7. WAVEFORM 7 
   Fig 7: Waveform 7

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) SIGNAL
   
   

   ECM Assembly Terminal Name	Between #10 (to #60) and E1
   Tester Range	5 V/DIV., 20 ms./DIV.
   Condition	Idling, engine coolant temperature 60°C or less

   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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   PURGE VSV OPERATION SIGNAL
   
   

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

   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 9: Waveform 9

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   THROTTLE ACTUATOR NEGATIVE TERMINAL SIGNAL
   
   

   ECM Assembly 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.

10. WAVEFORM 10 
    Fig 10: Waveform 10

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    THROTTLE ACTUATOR POSITIVE TERMINAL SIGNAL
    
    

    ECM Assembly 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.

11. WAVEFORM 11 
    Fig 11: Waveform 11

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    FUEL PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE) SIGNAL
    
    

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

12. WAVEFORM 12 
    Fig 12: Waveform 12

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    CRANKSHAFT POSITION SENSOR SIGNAL
    
    

    ECM Assembly Terminal Name	Between NE+ and NE-
    Tester Range	2 V/DIV., 20 ms./DIV.
    Condition	Idling with warm engine

    HINT: 

    The wavelength becomes shorter as the engine speed increases.

13. WAVEFORM 13 
    Fig 13: Waveform 13

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    VVT SENSOR (FOR INTAKE CAMSHAFT) SIGNAL
    
    

    ECM Assembly Terminal Name	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.

14. WAVEFORM 14 
    Fig 14: Waveform 14

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    KNOCK CONTROL SENSOR SIGNAL
    
    

    ECM Assembly Terminal Name	Between KNK1 and EKNK, or KNK2 and EKN2
    Tester Range	1 V/DIV., 1 ms./DIV.
    Condition	Engine speed maintained at 2500 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.
15. WAVEFORM 15 
    Fig 15: Waveform 15

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    VVT SENSOR (FOR EXHAUST CAMSHAFT) SIGNAL
    
    

    ECM Assembly Terminal Name	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.

16. WAVEFORM 16 
    Fig 16: Waveform 16

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    HEATED OXYGEN SENSOR (SENSOR 2) SIGNAL
    
    

    ECM Assembly Terminal Name	Between OX1B and EX1B, or OX2B and EX2B
    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 assembly values from the heated oxygen sensor.

17. WAVEFORM 17 
    Fig 17: Waveform 17

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    MASS AIR FLOW METER SUB-ASSEMBLY SIGNAL
    
    

    ECM Assembly Terminal Name	Between VG and E2G
    Tester Range	1 V/DIV., 100 μs./DIV.
    Condition	Power switch on (IG)

18. WAVEFORM 18 
    Fig 18: Waveform 18

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    CAN COMMUNICATION SIGNAL (REFERENCE)
    
    

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

    HINT: 

    The waveform varies depending on the CAN communication signal.

19. WAVEFORM 19 
    Fig 19: Waveform 19

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ENGINE SPEED SIGNAL
    
    

    ECM Assembly 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.

20. WAVEFORM 20 
    Fig 20: Waveform 20

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    CAN COMMUNICATION SIGNAL (REFERENCE)
    
    

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

    HINT: 

    The waveform varies depending on the CAN communication signal.

21. WAVEFORM 21 
    Fig 21: Waveform 21

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    CAMSHAFT REVOLUTION SIGNAL FROM INVERTER WITH CONVERTER ASSEMBLY
    
    

    ECM Assembly Terminal Name	Between G2O and E1
    Tester Range	5 V/DIV., 20 ms./DIV.
    Condition	Idling with warm engine

    HINT: 

    The wavelength becomes shorter as the engine speed increases.

22. WAVEFORM 22 
    Fig 22: Waveform 22

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    FUEL LID OPERATION SIGNAL FOR COMBINATION METER ASSEMBLY
    
    

    ECM Assembly Terminal Name	Between LSTM and E1
    Tester Range	5 V/DIV., 20 ms./DIV.
    Condition	Multi-information display displays "PLEASE WAIT NOW OPENING"

23. WAVEFORM 23 
    Fig 23: Waveform 23

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    FUEL LID OPERATION SIGNAL FOR COMBINATION METER ASSEMBLY
    
    

    ECM Assembly Terminal Name	Between LSTM and E1
    Tester Range	5 V/DIV., 20 ms./DIV.
    Condition	Multi-information display displays "CLOSE FUEL LID"

24. WAVEFORM 24 
    Fig 24: Waveform 24

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    FUEL LID OPERATION SIGNAL FOR COMBINATION METER ASSEMBLY
    
    

    ECM Assembly Terminal Name	Between LSTM and E1
    Tester Range	5 V/DIV., 20 ms./DIV.
    Condition	Multi-information display displays "REFUEL READY"

25. WAVEFORM 25 
    Fig 25: Waveform 25

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    COOLING FAN CONTROL SIGNAL
    
    

    ECM Assembly Terminal Name	Between RFC and E1
    Tester Range	1 V/DIV., 20 ms./DIV.
    Condition	Power switch on (IG), A/C ON (MAX Cool)

    HINT: 

    The duty ratio varies depending on the engine coolant temperature.