Fuel INFINITI QX56 2011 Factory Owners Manual

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-86
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
78
(L/R) 175
(B) A/F sensor 1 (bank 2) Input [Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm2.2 - 2.8V
Output voltage varies with air fuel
ratio.
79
(B) 97
(W) Throttle position sensor 2 Input [Ignition switch: ON]
 Engine: Stopped
 Selector lever: D position
 Accelerator pedal: Fully released
Less than 4.75 V
[Ignition switch: ON]
 Engine: Stopped
 Selector lever: D position
 Accelerator pedal: Fully depressed More than 0.36 V
80
(L/W) 175
(B) A/F sensor 1 (bank 2) Input [Ignition switch: ON] 3.0 V
81
(G) 97
(W) Sensor power supply
[Throttle position sensor (bank
1)]
— [Ignition switch: ON] 5 V
83
(LG/ R) 99
(LG/ B) Sensor power supply
[Camshaft position sensor (bank
2)]
— [Ignition switch: ON] 5 V
85
(GR/
R) 70
(W/L) Sensor power supply
(Manifold absolute pressure
sensor)
— [Ignition switch: ON] 5 V
86
(R/ W) 98
(G/ W) Crankshaft position sensor Input [Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle 4.0 - 5.0 V
[Engine is running]
 Engine speed: 2,000 rpm 4.0 - 5.0 V
87
(L/W) 100
(R) Heated oxygen sensor 2 (bank
2)
Input[Engine is running]
 Revving engine from idle to 3,000
rpm quickly after the following condi-
tions 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 - 1.0 V
88
(B) 175
(B) A/F sensor 1 (bank 1) Input [Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm2.2 - 2.8 V
Output voltage varies with air fuel
ratio.
90
(W) 175
(B)
A/F sensor 1 (bank 1) Input [Ignition switch: ON] 3.0 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JMBIA0041GB
JMBIA0042GB
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

EC-90
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
111
(R) 175
(B) Fuel injector driver power supply Input [Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14 V)
11 2
(SB) 175
(B) Fuel injector driver power supply Input [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
11 4 (B) — ECM ground — — —
11 5 (B) — ECM ground — — —
120 (Y) 175
(B) EVAP canister vent control valve Output [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
122
(BR/ W) 175
(B) VVEL actuator motor relay abort
signal (VVEL control module)
Input [Ignition switch: ON] 0 V
123
(V/R) 175
(B) Throttle control mo
tor relay Output [Ignition switch: ON
→ OFF] 0 - 1.0 V
↓
BATTERY VOLTAGE
(11 - 14 V)
↓
0 V
[Ignition switch: ON] 0 - 1.0 V
125
(GR) 175
(B) Fuel pump control module
(FPCM)
Output[When cranking engine] 0 - 0.5 V
[Engine is running]
 Warm-up condition
0 - 4.0 V
126 (O) 129
(P/L) Accelerator pedal position sen-
sor 2
Input[Ignition switch: ON]
 Engine: Stopped
 Accelerator pedal: Fully released
0.28 - 0.48 V
[Ignition switch: ON]
 Engine: Stopped
 Accelerator pedal: Fully depressed 2.0 - 2.5 V
128 (Y) 130
(R) ASCD steering switch Input [Ignition switch: ON]
 ASCD steering switch: OFF
4 V
[Ignition switch: ON]
 MAIN switch: Pressed 0 V
[Ignition switch: ON]
 CANCEL switch: Pressed 1 V
[Ignition switch: ON]
 RESUME/ACCELERATE switch: Pressed 3 V
[Ignition switch: ON]
 SET/COAST switch: Pressed 2 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JPBIA3344ZZ
Revision: 2010 May2011 QX56

ECM
EC-91
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
128
(Y) 175
(B) ICC steering switch Input [Ignition switch: ON]
 ICC steering switch: OFF
4.2 V
[Ignition switch: ON]
 MAIN switch: Pressed 0 V
[Ignition switch: ON]
 CANCEL switch: Pressed 1.9 V
[Ignition switch: ON]
 RESUME/ACCELERATE switch: Pressed 3.7 V
[Ignition switch: ON]
 SET/COAST switch: Pressed 3.2 V
[Ignition switch: ON]
 DISTANCE switch: Pressed 2.6 V
[Ignition switch: ON]
 DYNAMIC DRIVER ASSISTANCE switch: Pressed 1.0 V
129
(P/L) —Sensor ground
(Accelerator pedal position sen-
sor 2)
—— —
130 (R) —Sensor ground
(ASCD steering switch/ICC
steering switch) —— —
131
(L/W) 129
(P/L) Sensor power supply
(Accelerator pedal position sen-
sor 2)
— [Ignition switch: ON] 5 V
133
(SB) 150
(R) Sensor power supply
(Refrigerant pressure sensor/
Battery current sensor/EVAP
control system pressure sensor)
— [Ignition switch: ON] 5 V
134
(V/W) 175
(B) Fuel temperature sensor Input
[Engine is running]
 Warm-up condition2.8 V
136 (W/
R) 140
(R/Y) Accelerator pedal position sen-
sor 1
Input[Ignition switch: ON]
 Engine: Stopped
 Accelerator pedal: Fully released
0.65 - 0.87 V
[Ignition switch: ON]
 Engine: Stopped
 Accelerator pedal: Fully depressed 4.3 - 4.8 V
137 (W/
G) 140
(R/Y) Sensor power supply
(Accelerator pedal position sen-
sor 1)
— [Ignition switch: ON] 5 V
138 (V) 150
(R) Battery current sensor Input [Engine is running]
 Battery: Fully charged*
2
 Idle speed2.6 - 3.5 V
139 (G) 175
(B) Battery temperature sensor Input [Engine is running]
 Battery temperature: 25
°C
 Idle speed 3.3 V
140
(R/Y) —Sensor ground
(Accelerator pedal position sen-
sor 1) —— —
141
(SB) 175
(B) Ignition switch Input [Ignition switch: OFF] 0 V
[Ignition switch: ON]
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
Revision: 2010 May2011 QX56

EC-92
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
142
(R/W) 175
(B) Fuel pump control module
(FPCM) check
Input[When cranking engine] 0 V
[Engine is running]
 Warm-up condition
 Idle speed
9 V
143
(L/Y) 150
(R) EVAP control system pressure
sensor
Input [Ignition switch: ON] 1.8 - 4.8 V
144
(O/B) 150
(R) Refrigerant pressure sensor Input [Engine is running]
 Warm-up condition
 Both A/C switch and blower fan mo-
tor switch: ON (Compressor oper-
ates) 1.0 - 4.0 V
146 (L) — CAN communication line — — —
147
(G/Y) 175
(B) ASCD/ICC brake switch Input [Ignition switch: ON]
 Brake pedal: Slightly depressed
0 V
[Ignition switch: ON]
 Brake pedal: Fully released BATTERY VOLTAGE
(11 - 14 V)
150 (R) —Sensor ground
(Refrigerant pressure sensor/
Battery current sensor/EVAP
control system pressure sensor) —— —
151 (P) — CAN communication line — — —
156 (L) 175
(B) Power supply
for ECM (Back-
up) Input [Ignition switch: OFF] BATTERY VOLTAGE
(11 - 14 V)
158
(W/B) 175
(B) Stop lamp switch Input [Ignition switch: OFF]
 Brake pedal: Fully released
0 V
[Ignition switch: OFF]
 Brake pedal: Slightly depressed BATTERY VOLTAGE
(11 - 14 V)
161 (R/W) — ENG communication line — — —
163
(L/G) 175
(B) ECM relay (Self shut-off) Output [Engine is running]
[Ignition switch: OFF]
 A few seconds after turning ignition
switch OFF 0 - 1.5 V
[Ignition switch: OFF]
 More than a few seconds after turn- ing ignition switch OFF BATTERY VOLTAGE
(11 - 14 V)
165
(GR/ R) —
NOTE:
Not used —— —
166 (W) — ENG communication line — — —
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
Revision: 2010 May2011 QX56

ECM
EC-93
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
*1: This may vary depending on internal resistance of the tester.
*2: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to PG-159, "
How to Handle Battery".
Fail-safeINFOID:0000000006217731
NON DTC RELATED ITEM
DTC RELATED ITEM
169
(G/B) 175
(B) Engine speed signal output Input [Engine is running]
 Warm-up condition
 Idle speed
NOTE:
The pulse cycle changes depending
on rpm at idle 0 - 7.0 V
[Engine is running]
 Warm-up condition
 Engine speed: 2,000 rpm 0 - 7.0 V
171 (W) 175
(B) Power supply for ECM Input [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
172 (W) 175
(B) Power supply for ECM Input [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
173 (O) 175
(B) Throttle contro
l motor power
supply Input [Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14 V)
174 (B) — ECM ground — — —
175 (B) — ECM ground — — —
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
OutputJPBIA3352ZZ
JPBIA3354ZZ
Detected items Engine operating condition
in fail-safe mode RemarksReference
page
Malfunction indicator
circuit Engine speed will not rise
more than 2,500 rpm due
to the fuel cut When there is an open circuit on MIL circuit, the ECM cannot warn
the driver by illuminating MIL when there is malfunction on engine
control system.
Therefore, when electrical controlled throttle and part of ECM related
diagnoses are continuously detected as NG for 5 trips, ECM warns
the driver that engine control system malfunctions and MIL circuit is
open by means of operating the fail-safe function.
The fail-safe function also operates when above diagnoses except
MIL circuit are detected and demands the driver to repair the malfunc-
tion. EC-515
Revision: 2010 May2011 QX56

EC-94
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
DTC No. Detected items Engine operating condition in fail-safe mode
U0113
U1003
U1024 Can communication circuit VVEL actuator
motor relay is turned off, and VVEL value is become at a minimum angle.
Engine speed will not rise more than 3,500 rpm due to the fuel cut.
P0011
P0021 Intake valve timing control The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
P0087 FRP control system  Engine torque is limited.
 VVEL value is maintained at a fixed angle.
P0088 Engine speed is limited.
P008A Low fuel pressure control
system Engine torque is limited.
P0090 FRP control system  Engine torque is limited.
 VVEL value is maintained at a fixed angle.
P0102
P0103 Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118 Engine coolant tempera-
ture sensor circuit
Engine coolant temperature will be determined by ECM based on the following condition.
CONSULT-III displays the engine coolant temperature decided by ECM.
Condition Engine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned ON
or START 40
°C (104 °F)
Approx. 4 minutes or more after
engine starting 80
°C (176 °F)
Except as shown above 40 - 80 °C (104 - 176 °F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P2135 Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
Therefore, the acceleration will be poor.
P0190 FRP sensor  Engine speed is limited.
 High pressure fuel pump is activated at maximum discharge pressure.
P0201
P0202
P0203
P0204
P0205
P0206
P0207
P0208 Injector  Engine torque is limited.
 Fuel injection shut-off of malfunction cylinder.
 Mixture ratio feedback control does not function.
 Idle engine speed is increased.
P0500 Vehicle speed sensor The cooling fan operates (Highest) while engine is running.
P0524 Engine oil pressure The signal is not energized to the intake valve timing control solenoid valve and the valve
control does not function.
Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0605 ECM (When ECM calculation function is malfunctioning:)
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
ECM deactivates ASCD operation.
P0607 ECM VVEL actuator motor relay is
turned off, and VVEL value is become at a minimum angle.
Engine speed will not rise more than 3,500 rpm due to the fuel cut.
Revision: 2010 May2011 QX56