Infiniti F50. Manual - part 364

 

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Infiniti F50. Manual - part 364

 

 

TROUBLE DIAGNOSIS

EC-97

C

D

E

F

G

H

I

J

K

L

M

A

EC

Circuit Diagram

EBS00LW1

TBWM0100E

EC-98

TROUBLE DIAGNOSIS

TBWM0120E

TROUBLE DIAGNOSIS

EC-99

C

D

E

F

G

H

I

J

K

L

M

A

EC

ECM Harness Connector Terminal Layout

EBS00LW2

ECM Terminals and Reference Value

EBS00LW3

PREPARATION

1.

ECM is located behind the glove box. For this inspection,
remove glove box.

2.

Remove ECM harness protector.

3.

Perform all voltage measurements with the connector con-
nected. Extend tester probe as shown to perform tests easily.

Open harness securing clip to make testing easier.

Use extreme care not to touch 2 pins at 1 time.

Data is for comparison and may not be exact.

ECM INSPECTION TABLE

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.

PBIB0075E

PBIB0028E

MEC486B

EC-100

TROUBLE DIAGNOSIS

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

5
6
7

13
14
15
16
17

B/W
L
BR
P
OR/L
B/R
OR
G

Injector No. 1
Injector No. 2
Injector No. 3
Injector No. 4
Injector No. 5
Injector No. 6
Injector No. 7
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 is 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

8

BR

Heated oxygen sensor 1 
heater (bank 1)

[Engine is running]

Warm-up condition

Engine speed is below 3,600 rpm.

Approximately 7V

[Engine is running]

Engine speed is above 3,600 rpm.

BATTERY VOLTAGE
(11 - 14V)

9

G/Y

Heated oxygen sensor 1 
heater (bank 2)

[Engine is running]

Warm-up condition

Engine speed is below 3,600 rpm.

Approximately 7V

[Engine is running]

Engine speed is above 3,600 rpm.

BATTERY VOLTAGE
(11 - 14V)

10

GY

Heated oxygen sensor 2 
heater (bank 1)

[Engine is running]

Engine speed is below 3,600 rpm after the 
following conditions are met.

Warm-up condition

Keeping the engine speed between 3,500 
and 4,000 rpm for 1 minute and at idle for 1 
minute under no load

0 - 1.0V

[Ignition switch “ON”]

Engine stopped

[Engine is running]

Engine speed is above 3,600 rpm.

BATTERY VOLTAGE
(11 - 14V)

PBIB0042E

PBIB0043E

PBIB0519E

PBIB0519E

 

 

 

 

 

 

 

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