Infiniti G37 Coupe. Manual - part 586
ECM
EC-525
< ECU DIAGNOSIS >
[VQ37VHR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
76
(W)
128
(B)
Heated oxygen sensor 2
(bank 1)
Input
[Engine is running]
• Revving engine from idle to 3,000 rpm
quickly 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
77
(SB)
68
(LG)
Mass air flow sensor
(bank 1)
Input
[Engine is running]
• Warm-up condition
• Idle speed
0.7 - 1.2V
[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm
1.3 - 1.7V
78
(G)
84
(B)
Engine oil temperature
sensor
Input
[Engine is running]
0 - 4.8V
Output voltage varies with engine
oil temperature.
79
(BR)
94
(Y)
Mass air flow sensor
(bank 2)
Input
[Engine is running]
• Warm-up condition
• Idle speed
0.7 - 1.2V
[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm
1.3 - 1.7V
80
(O)
128
(B)
Heated oxygen sensor 2
(bank 2)
Input
[Engine is running]
• Revving engine from idle to 3,000 rpm
quickly 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
81
(R)
128
(B)
Fuel injector No. 3
Output
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending on
rpm at idle
BATTERY VOLTAGE
(11 - 14V)
82
(V)
Fuel injector No. 6
85
(BR)
Fuel injector No. 2
86
(W)
Fuel injector No. 5
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm
BATTERY VOLTAGE
(11 - 14V)
89
(GR)
Fuel injector No. 1
90
(O)
Fuel injector No. 4
83
(LG)
94
(Y)
Intake air temperature
sensor (bank 2)
Input
[Engine is running]
0 - 4.8V
Output voltage varies with intake
air temperature.
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0047GB
JMBIA0048GB