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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