Infiniti Q45. Manual - part 517

FUEL INJECTOR

EC-707

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

NBS00276

TBWM1255E

EC-708

FUEL INJECTOR

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

21
22
23
44

W/B
Y
R/L
BR

Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 7

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm 
at idle

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

PBIB0042E

PBIB0043E

FUEL INJECTOR

EC-709

C

D

E

F

G

H

I

J

K

L

M

A

EC

TBWM1256E

EC-710

FUEL INJECTOR

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure

NBS00277

1. 

INSPECTION START

Turn ignition switch to START.
Is any cylinder ignited?

Yes or No

Yes (With CONSULT-II)>>GO TO 2.
Yes (Without CONSULT-II)>>GO TO 3.
No

>> GO TO 3.

2. 

CHECK OVERALL FUNCTION

 With CONSULT-II

1.

Start engine.

2.

Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.

3.

Make sure that each circuit produces a momentary engine
speed drop.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 3.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

40
41
42
63

BR
G
B/R
L

Fuel injector No. 6
Fuel injector No. 4 
Fuel injector No. 2
Fuel injector No. 8

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm 
at idle

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

PBIB0042E

PBIB0043E

PBIB0133E