SFI SYSTEM > TERMINALS OF ECM

for Preparation Click here

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.

Camshaft timing oil control valve (OCV):

Item	Content
Symbols (Terminal No.)	OC1+ (E8-34) - OC1- (E8-33) OC2+ (E6-9) - OC2- (E6-8) OE1+ (E8-9) - OE1- (E8-8) OE2+ (E6-24) - OE2- (E6-23)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as the engine rpm increases.

Heated oxygen sensor:

Item	Content
Symbols (Terminal No.)	OX1B (A7-28) - O1B- (A7- 29) OX2B (A7-17) - O2B- (A7- 18)
Tool setting	0.2 V/DIV., 200 msec./DIV.
Condition	Engine speed maintained at 2,500 rpm for 2 minutes after warming up engine

HINT:

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

Injector No. 1 (to No. 6) injection signal:

Item	Content
Symbols (Terminal No.)	#10 (E8-15) - E1 (E7-7) #20 (E6-17) - E1 (E7-7) #30 (E8-14) - E1 (E7-7) #40 (E6-16) - E1 (E7-7) #50 (E8-13) - E1 (E7-7) #60 (E6-15) - E1 (E7-7)
Tool setting	2 V/DIV., 20 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as the engine rpm increases.

Knock sensor:

Item	Content
Symbols (Terminal No.)	KNK1 (E7-28) - EKNK (E7-30) KNK2 (E7-29) - EKN2 (E7- 31)
Tool setting	0.01 to 10 V/DIV., 0.01 to 10 msec./DIV.
Condition	Engine speed maintained a 4,000 rpm after warming up engine

HINT:

1. The wavelength becomes shorter as the engine rpm increases.
   
2. The waveforms and amplitudes displayed differ slightly depending on the vehicle.
   

Crankshaft position sensor and VVT sensor for intake camshaft:

Item	Content
Symbols (Terminal No.)	NE+ (E8-32) - NE- (E8-31) VV1+ (E8-21) - VV1- (E8- 20) VV2+ (E8-19) - VV2- (E8- 18)
Tool setting	5 V/DIV., 20 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as the engine rpm increases.

Crankshaft position sensor and VVT sensor for exhaust camshaft:

Item	Content
Symbols (Terminal No.)	NE+ (E8-32) - NE- (E8-31) EV1+ (E6-19) - EV1- (E6- 18) EV2+ (E45-13) - EV2- (E45-12)
Tool setting	5 V/DIV., 20 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as the engine rpm increases.

Igniter IGT signal (from ECM to igniter) and Igniter IGF signal (from igniter to ECM):

Item	Content
Symbols (Terminal No.)	IGT1 (E6-13) - E1 (E7-7) IGT2 (E8-17) - E1 (E7-7) IGT3 (E6-10) - E1 (E7-7) IGT4 (E6-12) - E1 (E7-7) IGT5 (E8-27) - E1 (E7-7) IGT6 (E8-26) - E1 (E7-7) IGF1 (E6-7) - E1 (E7-7) IGF2 (E6-6) - E1 (E7-7)
Tool setting	2 V/DIV., 20 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as the engine rpm increases.

VSV for EVAP:

Item	Content
Symbols (Terminal No.)	PRG (E8-11) - E1 (E7-7)
Tool setting	5 V/DIV., 50 msec./DIV.
Condition	Idling

HINT:

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

Vehicle speed signal:

Item	Content
Symbols (Terminal No.)	SPD (A6-22) - E1 (E7-7)
Tool setting	2 V/DIV., 20 msec./DIV.
Condition	Driving at 20 km/h (12 mph)

HINT:

The wavelength becomes shorter as the vehicle speed increases.

Throttle actuator positive terminal:

Item	Content
Symbols (Terminal No.)	M+ (E8-2) - ME01 (E8-4)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	Idling with warm engine

HINT:

The duty ratio varies depending on the throttle actuator operation.

Throttle actuator negative terminal:

Item	Content
Symbols (Terminal No.)	M- (E8-1) - ME01 (E8-4)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	Idling with warm engine

HINT:

The duty ratio varies depending on the throttle actuator operation.

Engine speed signal:

Item	Content
Symbols (Terminal No.)	TACH (A7-16) - E1 (E7-7)
Tool setting	5 V/DIV., 10 msec./DIV.
Condition	Idling

HINT:

The wavelength becomes shorter as the engine rpm increases.

Injector No. 1 (to No. 6) injection signal and Injection confirmation signal:

Item	Content
Symbols (Terminal No.)	CH1: #10 (E8-15) - E1 (E7-7) CH1: #20 (E6-17) - E1 (E7-7) CH1: #30 (E8-14) - E1 (E7-7) CH1: #40 (E6-16) - E1 (E7-7) CH1: #50 (E8-13) - E1 (E7-7) CH1: #60 (E6-15) - E1 (E7-7) CH2: INJF (E45-26) - E1 (E7-7)
Tool setting	2 V/DIV., 20 msec./DIV.
Condition	Idling with warm engine

HINT:

The wavelength becomes shorter as the engine rpm increases.

High pressure side fuel pump (Spill valve):

Item	Content
Symbols (Terminal No.)	CH1: FPD (E45-33) - E1 (E7-7) CH2: FPF1 (E45-32) - E1 (E7-7)
Tool setting	2 V/DIV., 5 msec./DIV.
Condition	Idling with warm engine

DC motor for SCV positive terminal:

Item	Content
Symbols (Terminal No.)	IA1+ (E45-2) - E01 (E6-2)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	Idling with warm engine

DC motor for SCV negative terminal:

Item	Content
Symbols (Terminal No.)	IA1- (E45-1) - E01 (E6-2)
Tool setting	5 V/DIV., 1 msec./DIV.
Condition	Idling with warm engine

CAN communication signal:

Item	Content
Symbols (Terminal No.)	CANH (A6-25) - E1 (E7-7)
Tool setting	1 V/DIV., 10 μs/DIV.
Condition	Stop engine and engine switch on (IG)

HINT:

The waveform varies depending on the CAN communication signal.

CAN communication signal:

Item	Content
Symbols (Terminal No.)	CANL (A6-24) - E1 (E7-7)
Tool setting	1 V/DIV., 10 μs/DIV.
Condition	Stop engine and engine switch on (IG)

HINT:

The waveform varies depending on the CAN communication signal.