2011 INFINITI QX56 BATTERY

EC-78
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
1
(R)
2
(R) 175
(B) Fuel injector No. 8 (HI)
Fuel injector No. 5 (HI)
Output[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
3
(G)
4
(G) 175
(B) Fuel injector No. 3 (LO)
Fuel injector No. 2 (LO)
Input[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
5
(B/R) — ECM ground — — —
JPBIA3345ZZ
JPBIA3347ZZ
JPBIA3355ZZ
JPBIA3356ZZ
Revision: 2010 May2011 QX56

ECM
EC-79
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
6
(R) 7
(R) 175
(B) Fuel injector No. 3 (HI)
Fuel injector No. 2 (HI)
Output[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
8
(G) 9
(G) 175
(B) Fuel injector No. 8 (LO)
Fuel injector No. 5 (LO)
Input[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
10
(B) — ECM ground — — —
11
(BR) 175
(B) PNP switch Input [Ignition switch: ON]
 Selector lever: P or N position
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON]
 Selector lever: Except above posi- tion 0 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
OutputJPBIA3345ZZ
JPBIA3347ZZ
JPBIA3355ZZ
JPBIA3356ZZ
Revision: 2010 May2011 QX56

EC-82
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
37
(V) 175
(B) Cooling fan speed Input [Ignition switch: ON]
 Engine stopped
5 V
[Engine is running]
 Idle speed
 After warm-up condition BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Idle speed
 Before warm-up condition BATTERY VOLTAGE
(11 - 14 V)
39
(P/B) 45
(L/O) Power steering pressure sensor Input [Engine is running]
 Steering wheel: Being turned
0.5 - 4.5 V
[Engine is running]
 Steering wheel: Not being turned 0.4 - 0.8 V
40
(W/L) —Sensor ground
(Fuel rail pressure sensor/En-
gine coolant temperature sen-
sor/Engine oil temperature
sensor) —— —
42
(L/Y) 40
(W/L) Engine oil temperature sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine
oil temperature.
45
(L/O) —Sensor ground
(Power steering pressure sen-
sor/ Low fuel pressure sensor/
Electrically-controlled cooling
fan coupling) —— —
46
(SB) 175
(B) Fuel injector driver power supply Input [Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: OFF] 1.5 V
47
(G) 175
(B) Heated oxygen sensor 2 heater
(bank 1)
Input[Engine is running]
 Engine speed: Below 3,600 rpm af-
ter 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 10 V
[Ignition switch: ON]
 Engine: Stopped
[Engine is running]
 Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14 V)
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JPBIA3332ZZ
JPBIA3733ZZ
JMBIA0037GB
Revision: 2010 May2011 QX56

ECM
EC-83
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
48
(L/W) 175
(B) A/F sensor 1 heater (bank 1) Input [Engine is running]
 Warm-up condition
 Idle speed
(More than 140 seconds after start-
ing engine) 2.9 - 8.8 V
49
(LG/
B) 175
(B) Intake valve timing control sole-
noid valve (bank 1)
Output[Engine is running]
 Warm-up condition
 Idle speed
BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000rpm 7 - 12 V
51
(R) 175
(B) Fuel injector driver power supply Output [Engine is running]
 Warm-up condition
 Idle speed
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: OFF] 1.5 V
52
(L/R) 175
(B) Heated oxygen sensor 2 heater
(bank 2)
Output[Engine is running]
 Engine speed: Below 3,600 rpm af-
ter 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 10 V
[Ignition switch: ON]
 Engine: Stopped
[Engine is running]
 Engine speed: Above 3,600 rpm BATTERY VOLTAGE
(11 - 14 V)
53
(SB) 175
(B) A/F sensor 1 heater (bank 2) Output [Engine is running]
 Warm-up condition
 Idle speed
(More than 140 seconds after start-
ing engine) 2.9 - 8.8 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JPBIA3361ZZ
JMBIA0038GB
JMBIA0037GB
JPBIA3361ZZ
Revision: 2010 May2011 QX56

EC-84
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
54
(G/R) 175
(B) Intake valve timing control sole-
noid valve (bank 2)
Output[Engine is running]
 Warm-up condition
 Idle speed
BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000rpm 7 - 12 V
57
(W) 175
(B) Throttle control motor (Open) Output [Ignition switch: ON]
 Engine: Stopped
 Selector lever: D
 Accelerator pedal: Fully depressed
0 - 14 V
[Ignition switch: ON]
 Engine: Stopped
 Selector lever: D position
 Accelerator pedal: Fully released 0 - 14 V
60
(B) — Shield — — —
63
(R) 175
(B) Throttle control motor (Close) Output [Ignition switch: ON]
 Engine: Stopped
 Selector lever: D position
 Accelerator pedal: In the middle of
releasing operation 0 - 14 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JMBIA0038GB
JMBIA0031GB
JMBIA0032GB
JMBIA0031GB
Revision: 2010 May2011 QX56

ECM
EC-85
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
64
(V/W) 175
(B) EVAP canister purge volume
control solenoid valve
Output[Engine is running]
 Idle speed
 Accelerator pedal: Not depressed
even slightly, after engine starting BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Engine speed: About 2,000 rpm (More than 100 seconds after start-
ing engine) BATTERY VOLTAGE
(11 - 14 V)
67
(V) 175
(B) Manifold absolute pressure sen-
sor
Input[Engine is running]
 Warm-up condition
 Idle speed
1.2 V
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm 1.5 V
68
(BR/
W) —
Sensor ground
[Camshaft position sensor (bank
1)] —— —
70
(W/L) —Sensor ground
(Manifold absolute pressure
sensor)
—— —
73
(P) 99
(LG/ B) Camshaft position sensor (bank
2)
Input[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle 3.0 - 5.0 V
[Engine is running]
 Engine speed: 2,000 rpm 3.0 - 5.0 V
74
(L) 175
(B) A/F sensor 1 (bank 2) Input [Ignition switch: ON] 2.5 V
76
(W/
G) 98
(G/
W) Sensor power supply
(Crankshaft position sensor)
— [Ignition switch: ON] 5 V
77
(Y/R) 68
(BR/ W) Sensor power supply
[Camshaft position sensor (bank
1)]
— [Ignition switch: ON] 5 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
OutputJMBIA0039GB
JMBIA0040GB
JMBIA0045GB
JMBIA0046GB
Revision: 2010 May2011 QX56

EC-88
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
101
(R)
102 (R) 175
(B) Fuel injector No. 1 (HI)
Fuel injector No. 6 (HI)
Input[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
103 (G)
104 (G) 175
(B) Fuel injector No. 7 (LO)
Fuel injector No. 4 (LO)
Output[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
105
(L/W) 175
(B) High pressure fuel pump (HI) Input [Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
OutputJPBIA3345ZZ
JPBIA3347ZZ
JPBIA3355ZZ
JPBIA3356ZZ
JPBIA3340ZZ
JPBIA3341ZZ
Revision: 2010 May2011 QX56

ECM
EC-89
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
106
(R)
107 (R) 175
(B) Fuel injector No. 7 (HI)
Fuel injector No. 4 (HI)
Output[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
108 (G)
109 (G) 175
(B) Fuel injector No. 1 (LO)
Fuel injector No. 6 (LO)
Output[Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
11 0
(L/B) 175
(B) High pressure fuel pump (LO) Input [Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
OutputJPBIA3345ZZ
JPBIA3347ZZ
JPBIA3355ZZ
JPBIA3356ZZ
JPBIA3342ZZ
JPBIA3343ZZ
Revision: 2010 May2011 QX56