Ecd System Terminals Of Ecm

Measure the voltage of the ECM connector.

УКАЗАНИЕ:

Each ECM terminal's standard voltage is shown in the table below.

In the table, first follow the information in "Condition". Look at "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown in "Specified Condition".

Use the illustration above as a reference for the ECM terminals.

УКАЗАНИЕ:

*: w/ Entry and start system.

Using an oscilloscope, check the waveform 1.

Waveform 1:

Suction control valve signal

Item	Content
Symbols (Terminal No.)	PCV+ (B32-42) - PCV- (B32-41)
Tool Setting	10 V/DIV., 5 msec./DIV.
Condition	Idling or cranking with warm engine

УКАЗАНИЕ:

The waveform varies depending on the suction control valve operation.

Using an oscilloscope, check the waveform 2.

Waveform 2:

No. 1 injector injection signal
No. 2 injector injection signal
No. 3 injector injection signal
No. 4 injector injection signal

Item	Content
Symbols (Terminal No.)	(a) #1 (B32-50) - E1 (B32-109) (b) #3 (B32-49) - E1 (B32-109) (c) #4 (B32-48) - E1 (B32-109) (d) #2 (B32-47) - E1 (B32-109)
Tool Setting	5 V/DIV., 20 msec./DIV.
Condition	Idling with warm engine

УКАЗАНИЕ:

The waveform varies depending on the injector injection.

Using an oscilloscope, check the waveform 3.

Waveform 3:

Injector injection confirmation signal

Item	Content
Symbols (Terminal No.)	INJF (B32-51) - E1 (B32-109)
Tool Setting	2 V/DIV., 20 msec./DIV.
Condition	Idling with warm engine

УКАЗАНИЕ:

The waveform varies depending on the injector injection.

Using an oscilloscope, check the waveform 4.

Waveform 4:

Crankshaft position sensor signal

Camshaft position sensor signal

Item	Content
Symbols (Terminal No.)	(a) NE+ (B32-78) - NE- (B32-77) (b) G+ (B32-80) - G- (B32-79)
Tool Setting	5 V/DIV., 20 msec./DIV.
Condition	Idling with warm engine

УКАЗАНИЕ:

The waveform varies depending on the engine revolution.

Using an oscilloscope, check the waveform 5.

Waveform 5:

VRV for turbocharger control signal

Item	Content
Symbols (Terminal No.)	VN (B32-84) - E1 (B32-109)
Tool Setting	5 V/DIV., 1 msec./DIV.
Condition	Idling with warm engine

УКАЗАНИЕ:

The waveform changes depending on the electric vacuum regulating valve for turbocharger operation.

Using an oscilloscope, check the waveform 6.

Waveform 6:

Diesel throttle signal

Item	Content
Symbols (Terminal No.)	LUSL (B32-86) - E1 (B32-109)
Tool Setting	1 V/DIV., 2 msec./DIV.
Condition	Warm engine with engine racing

УКАЗАНИЕ:

The waveform varies depending on the throttle valve operation.

Using an oscilloscope, check the waveform 7.

Waveform 7:

Vehicle speed signal

Item	Content
Symbols (Terminal No.)	SPD (A12-14) - E1 (B32-109)
Tool Setting	5 V/DIV., 20 msec./DIV.
Condition	Driving the vehicle

УКАЗАНИЕ:

The wavelength becomes shorter as the vehicle speed increases.

Using an oscilloscope, check the waveform 8.

Waveform 8:

Engine speed signal

Item	Content
Symbols (Terminal No.)	TACH (A12-13) - E1 (B32-109)
Tool Setting	5 V/DIV., 20 msec./DIV.
Condition	Idling with warm engine

УКАЗАНИЕ:

The wavelength becomes shorter as the engine speed increases.

Using an oscilloscope, check the waveform 9.

Waveform 9:

Generator signal

Item	Content
Symbols (Terminal No.)	ALT (B32-54) - E1 (B32-109)
Tool Setting	5 V/DIV., 5 msec./DIV.
Condition	Idling

Using an oscilloscope, check the waveform 10.

Waveform 10:

EGR position sensor signal

Item	Content
Symbols (Terminal No.)	EGRS (B32-85) - EEGL (B32-95)
Tool Setting	5 V/DIV., 5 msec./DIV.
Condition	Idling

Using an oscilloscope, check the waveform 11.

Waveform 11:

CAN communication signal

Item	Content
Symbols (Terminal No.)	CANH (A12-38) - E1 (B32-109)
Tool Setting	1 V/DIV., 10 μsec./DIV.
Condition	Engine stopped and ignition switch on (IG)

УКАЗАНИЕ:

The waveform varies depending on the CAN communication signal.

Using an oscilloscope, check the waveform 12.

Waveform 12:

CAN communication signal

Item	Content
Symbols (Terminal No.)	CANL (A12-46) - E1 (B32-109)
Tool Setting	1 V/DIV., 10 μsec./DIV.
Condition	Engine stopped and ignition switch on (IG)

УКАЗАНИЕ:

The waveform varies depending on the CAN communication signal.