Infiniti M35/M45 Y50. Manual — part 586
TROUBLE DIAGNOSIS
EC-817
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
ECM Harness Connector Terminal Layout
NBS005AL
ECM Terminals and Reference Value
NBS005AM
PREPARATION
1.
ECM (1) is located behind the passenger side instrument lower
panel. For this inspection, remove passenger side instrument
lower panel.
2.
Remove ECM harness connector.
3.
When disconnecting ECM harness connector, loosen (A) it with
levers (2) as far as they will go as shown in the figure.
●
ECM (1)
●
Fasten (B)
4.
Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.
●
Use extreme care not to touch 2 pins at one 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 ECMs transistor. Use a ground other than ECM terminals, such as the ground.
MBIB0045E
PBIB2703E
PBIB2714E
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
1
B
ECM ground
[Engine is running]
●
Idle speed
Body ground
2
SB
A/F sensor 1 heater
(bank 1)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 5V
PBIB1584E
EC-818
[VK45DE]
TROUBLE DIAGNOSIS
3
R
Throttle control motor relay
power supply
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
4
W
Throttle control motor
(Close)
[Ignition switch: ON]
●
Engine: Stopped
●
Selector lever: D
●
Accelerator pedal: Released
0 - 14V
5
B
Throttle control motor
(Open)
[Ignition switch: ON]
●
Engine: Stopped
●
Selector lever: D
●
Accelerator pedal: Fully depressed
0 - 14V
6
R/L
Heated oxygen sensor 2
heater (bank 1)
[Engine is running]
●
Engine speed: Below 3,600 rpm after the
following conditions are met
–
Engine: After warming up
–
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: Above 3,600 rpm
BATTERY VOLTAGE
(11 - 14V)
10
W/G
Intake valve timing control
solenoid valve (bank 1)
[Engine is running]
●
Warm-up condition
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed: 2,000rpm
7 - 12V
11
G/O
Intake valve timing control
solenoid valve (bank 2)
[Engine is running]
●
Warm-up condition
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed: 2,000rpm
7 - 12V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB1104E
PBIB1105E
PBIB1790E
PBIB1790E
TROUBLE DIAGNOSIS
EC-819
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
12
R/G
Power steering pressure
sensor
[Engine is running]
●
Steering wheel: Being turned
0.5 - 4.5V
[Engine is running]
●
Steering wheel: Not being turned
0.4 - 0.8V
13
W/R
Crankshaft position sensor
(POS)
[Engine is running]
●
Warm-up condition
●
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle
1.0 - 2.0V
[Engine is running]
●
Engine speed: 2,000 rpm
1.0 - 2.0V
14
G
Camshaft position sensor
(PHASE)
[Engine is running]
●
Warm-up condition
●
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idle
1.0 - 4.0V
[Engine is running]
●
Engine speed: 2,000 rpm
1.0 - 4.0V
15
W
Knock sensor (bank 1)
[Engine is running]
●
Idle speed
Approximately 2.5V
16
W/L
A/F sensor 1 (bank 1)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 3.1V
35
GR/L
Approximately 2.6V
56
LG/B
Approximately 2.3V
75
Y
Approximately 2.3V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB1041E
PBIB1042E
PBIB1039E
PBIB1040E
EC-820
[VK45DE]
TROUBLE DIAGNOSIS
21
22
23
40
41
42
44
63
W/B
R/Y
R/B
V/R
P/L
R/W
O
G/Y
Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1
Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2
Fuel injector No. 7
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)
24
SB
A/F sensor 1 heater
(bank 2)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 5V
25
P/B
Heated oxygen sensor 2
heater (bank 2)
[Engine is running]
●
Engine speed: Below 3,600 rpm after the
following conditions are met
–
Engine: After warming up
–
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: Above 3,600 rpm
BATTERY VOLTAGE
(11 - 14V)
29
V
VIAS control solenoid valve
[Engine is running]
●
Selector lever: P or N
0 - 1.0V
[Engine is running]
●
Selector lever: D
●
Engine speed: Below 5,000 rpm
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Engine speed: Above 5,000 rpm
0 - 1.0V
32
R/G
EVAP control system pres-
sure sensor
[Ignition switch: ON]
Approximately 1.8 - 4.8V
34
Y/G
Intake air temperature sen-
sor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with intake
air temperature.
36
W
Knock sensor (bank 2)
[Engine is running]
●
Idle speed
Approximately 2.5V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB0042E
PBIB0043E
PBIB1584E
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