INFINITI QX56 2011 Factory Service Manual

ECM
EC-107
< ECU DIAGNOSIS INFORMATION > [VK56VD]
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SEC-
OND-
ARY AIR
71H Secondary Air system P0411 80H 01H
Secondary Air Injection System Incor-
rect Flow Detected
Bank1: P0491
Bank2: P0492 81H 01H
Secondary Air Injection System Insuffi-
cient Flow
P2445 82H 01H Secondary Air Injection System Pump
Stu c k O ff
P2448 83H 01H Secondary Air Injection System High
Airflow
Bank1: P2440
Bank2: P2442 84H 01H
Secondary Air Injection System Switch-
ing Valve Stuck Open
P2440 85H 01H Secondary Air Injection System Switch-
ing Valve Stuck Open
P2444 86H 01H Secondary Air Injection System Pump
Stu c k O n
FUEL
SYSTEM 81H
Fuel injection system function
(Bank 1) P0171 or P0172 80H 2FH Long term fuel trim
P0171 or P0172 81H 24H The number of lambda control clamped
82H Fuel injection system function
(Bank 2) P0174 or P0175 80H 2FH Long term fuel trim
P0174 or P0175 81H 24H The number of lambda control clamped
Item
OBD-
MID Self-diagnostic test item DTC Test value and Test
limit
(GST display) Description
TID Unit and
Scaling ID
Revision: 2010 May2011 QX56

EC-108
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
MISFIRE A1H Multiple Cylinder MisfiresP0301 80H 24H
Misfiring counter at 1000 revolution of
the first cylinder
P0302 81H 24H Misfiring counter at 1000 revolution of
the second cylinder
P0303 82H 24H Misfiring counter at 1000 revolution of
the third cylinder
P0304 83H 24H Misfiring counter at 1000 revolution of
the fourth cylinder
P0305 84H 24H Misfiring counter at 1000 revolution of
the fifth cylinder
P0306 85H 24H Misfiring counter at 1000 revolution of
the sixth cylinder
P0307 86H 24H Misfiring counter at 1000 revolution of
the seventh cylinder
P0308 87H 24H Misfiring counter at 1000 revolution of
the eighth cylinder
P0300 88H 24H Misfiring counter at 1000 revolution of
the multiple cylinders
P0301 89H 24H Misfiring counter at 200 revolution of the
first cylinder
P0302 8AH 24H Misfiring counter at 200 revolution of the
second cylinder
P0303 8BH 24H Misfiring counter at 200 revolution of the
third cylinder
P0304 8CH 24H Misfiring counter at 200 revolution of the
fourth cylinder
P0305 8DH 24H Misfiring counter at 200 revolution of the
fifth cylinder
P0306 8EH 24H Misfiring counter at 200 revolution of the
sixth cylinder
P0307 8FH 24H Misfiring counter at 200 revolution of the
seventh cylinder
P0308 90H 24H Misfiring counter at 200 revolution of the
eighth cylinder
P0300 91H 24H Misfiring counter at 1000 revolution of
the single cylinder
P0300 92H 24H Misfiring counter at 200 revolution of the
single cylinder
P0300 93H 24H Misfiring counter at 200 revolution of the
multiple cylinders
Item
OBD-
MID Self-diagnostic test item DTC Test value and Test
limit
(GST display) Description
TID Unit and
Scaling ID
Revision: 2010 May2011 QX56

ECM
EC-109
< ECU DIAGNOSIS INFORMATION > [VK56VD]
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MISFIRE A2H No. 1 Cylinder Misfire
P0301 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0301 0CH 24H Misfire counts for last/current driving cy-
cles
A3H No. 2 Cylinder Misfire P0302 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0302 0CH 24H Misfire counts for last/current driving cy-
cles
A4H No. 3 Cylinder Misfire P0303 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0303 0CH 24H Misfire counts for last/current driving cy-
cles
A5H No. 4 Cylinder Misfire P0304 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0304 0CH 24H Misfire counts for last/current driving cy-
cles
A6H No. 5 Cylinder Misfire P0305 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0305 0CH 24H Misfire counts for last/current driving cy-
cles
A7H No. 6 Cylinder Misfire P0306 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0306 0CH 24H Misfire counts for last/current driving cy-
cles
A8H No. 7 Cylinder Misfire P0307 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0307 0CH 24H Misfire counts for last/current driving cy-
cles
A9H No. 8 Cylinder Misfire P0308 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0308 0CH 24H Misfire counts for last/current driving cy-
cles
Item
OBD-
MID Self-diagnostic test item DTC Test value and Test
limit
(GST display) Description
TID Unit and
Scaling ID
Revision: 2010 May2011 QX56

EC-110
< ECU DIAGNOSIS INFORMATION >[VK56VD]
VVEL CONTROL MODULE
VVEL CONTROL MODULE
Reference ValueINFOID:0000000006217735
TERMINAL LAYOUT
PHYSICAL VALUES
NOTE:
 VVEL control module is located under the battery. Temporarily remove the battery to check voltage of the
terminals.
 Specification data are reference values and are measured between each terminals.
 Pulse signal is measured by CONSULT-III.
JMBIA0857ZZ
Terminal No. Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
1
(R) 14
(B) VVEL actuator motor power
supply (bank 2)
Input [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
2
(L/W) 14
(B) VVEL actuator motor
(High lift) (bank 2)
Output[Engine is running]
 Warm-up condition
 Idle speed
0 - 14 V
[Engine is running]
 Warm-up condition
 When revving engine up to 2,000 rpm quickly 0 - 14 V
3
(W) 6
(R) VVEL control shaft position
sensor 1 (bank 1)
Input[Engine is running]
 Warm-up condition
 Idle speed
0.25 - 1.40 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0.25 - 4.75 V
4
(L/W) —Sensor ground
[VVEL control shaft position
sensor 1 (bank 2)] —— —
JMBIA0854ZZ
JMBIA0855ZZ
Revision: 2010 May2011 QX56

VVEL CONTROL MODULEEC-111
< ECU DIAGNOSIS INFORMATION > [VK56VD]
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5
(L/R) 4
(L/W) VVEL control shaft position
sensor 1 (bank 2)
Input[Engine is running]
 Warm-up condition
 Idle speed
0.25 - 1.40 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0.25 - 4.75 V
6
(R) —Sensor ground
[VVEL control shaft position
sensor 1 (bank 1)] —— —
7
(B) 6
(R) Sensor power supply
[VVEL control shaft position
sensor 1 (bank 1)]
— [Ignition switch: ON] 5 V
8
(W/L) 14
(B) Power supply for VVEL con-
trol module
— [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
9
(L) 4
(L/W) Sensor power supply
[VVEL position sensor 1
(bank 2)]
— [Ignition switch: ON] 5 V
11
(W) — ENG communication line Input/
Output ——
12
(L/W) 14
(B) VVEL actuator motor
(High lift) (bank 1)
Output[Engine is running]
 Warm-up condition
 Idle speed
0 - 14 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0 - 14 V
13
(R) 14
(B) VVEL actuator motor power
supply (bank 1)
Input [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14 V)
14
(B) —VVEL control module
ground
—— —
Terminal No. Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JMBIA0854ZZ
JMBIA0855ZZ
Revision: 2010 May2011 QX56

EC-112
< ECU DIAGNOSIS INFORMATION >[VK56VD]
VVEL CONTROL MODULE
15
(L/B) 14
(B) VVEL actuator motor
(Low lift) (bank 2)
Output[Engine is running]
 Warm-up condition
 Idle speed
0 - 14 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0 - 14 V
16
(L/R) 19
(L) VVEL control shaft position
sensor 2 (bank 1)
Input[Engine is running]
 Warm-up condition
 Idle speed
3.50 - 4.75 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0.25 - 4.75 V
17
(O) —Sensor ground
[VVEL control shaft position
sensor 2 (bank 2)] —— —
18
(W/L) 17
(O) VVEL control shaft position
sensor 2 (bank 2)
Input[Engine is running]
 Warm-up condition
 Idle speed
3.50 - 4.75 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0.25 - 4.75 V
19
(L) —Sensor ground
[VVEL control shaft position
sensor 2 (bank 1)]
—— —
20
(L/W) 19
(L) Sensor power supply
[VVEL control shaft position
sensor 2 (bank 1)]
— [Ignition switch: ON] 5 V
21
(BR/
W) 14
(B) VVEL actuator motor relay
abort signal
(ECM)
Input
[Engine is running]
 Warm-up condition
 Idle speed 0 V
22
(W) 17
(O) Sensor power supply
[VVEL control shaft position
sensor 2 (bank 2)]
— [Ignition switch: ON] 5 V
23
(BR/ Y) 14
(B) VVEL control motor relay Output [Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON] 0 - 1.0 V
24
(R/W) — ENG communication line
Input/
Output——
Terminal No. Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JMBIA0854ZZ
JMBIA0855ZZ
Revision: 2010 May2011 QX56

VVEL CONTROL MODULEEC-113
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: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) 25
(L/B) 14
(B) VVEL control motor
(Low lift) (bank 1)
Output[Engine is running]
 Warm-up condition
 Idle speed
0 - 14 V
[Engine is running]
 Warm-up condition
 When revving engine up to 3,000 rpm quickly 0 - 14 V
Terminal No. Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
JMBIA0854ZZ
JMBIA0855ZZ
Revision: 2010 May2011 QX56

EC-114
< WIRING DIAGRAM >[VK56VD]
ENGINE CONTROL SYSTEM
WIRING DIAGRAM
ENGINE CONTROL SYSTEM
Wiring DiagramINFOID:0000000006217736
JCBWM2089GB
Revision: 2010 May2011 QX56

ENGINE CONTROL SYSTEMEC-115
< WIRING DIAGRAM > [VK56VD]
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JCBWM2090GB
Revision: 2010 May2011 QX56

EC-116
< WIRING DIAGRAM >[VK56VD]
ENGINE CONTROL SYSTEM
JCBWM2091GB
Revision: 2010 May2011 QX56