2011 INFINITI QX56 Factory Service Manual

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Page 2129 of 5598

INFINITI QX56 2011 Factory Service Manual
ECM
EC-105
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
HO2S 05H
Air fuel ratio (A/F) sensor 1
(Bank 2) P0151 83H 0BH
Minimum sensor output voltage for test
cycle
P0151 84

Page 2130 of 5598

INFINITI QX56 2011 Factory Service Manual
EC-106
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
EGR
SYSTEM31H EGR function P0400 80H 96H
Low Flow Faults: EGR temp change
rate (short term)
P0400 81H 96H Low Flow Faults: EGR temp change
rate (lo

EC-106
< ECU DIAGNOSIS INFORMATION >[VK56VD]
ECM
EGR
SYSTEM31H EGR function P0400 80H 96H
Low Flow Faults: EGR temp change
rate (short term)
P0400 81H 96H Low Flow Faults: EGR temp change
rate (long term)
P0400 82H 96H Low Flow Faults: Difference between
max EGR temp and EGR temp under
idling condition
P0400 83H 96H Low Flow Faults: Max EGR temp
P1402 84H 96H High Flow Faults: EGR temp increase
rate
VVT
SYSTEM 35H VVT Monitor (Bank1)
P0011 80H 9DH
VTC intake function diagnosis (VTC
alignment check diagnosis)
P0014 81H 9DH VTC exhaust function diagnosis (VTC
alignment check diagnosis)
P0011 82H 9DH VTC intake function diagnosis (VTC
drive failure diagnosis)
P0014 83H 9DH VTC exhaust function diagnosis (VTC
drive failure diagnosis)
36H VVT Monitor (Bank2) P0021 80H 9DH
VTC intake function diagnosis (VTC
alignment check diagnosis)
P0024 81H 9DH VTC exhaust function diagnosis (VTC
alignment check diagnosis)
P0021 82H 9DH VTC intake function diagnosis (VTC
drive failure diagnosis)
P0024 83H 9DH VTC exhaust function diagnosis (VTC
drive failure diagnosis)
EVAP
SYSTEM 39H
EVAP control system leak
(Cap Off) P0455 80H 0CH
Difference in pressure sensor output
voltage before and after pull down
3BH EVAP control system leak
(Small leak) P0442 80H 05H
Leak area index (for more than 0.04
inch)
3CH EVAP control system leak
(Very small leak) P0456 80H 05H
Leak area index (for more than 0.02
inch)
P0456 81H FDH Maximum internal pressure of EVAP
system during monitoring
3DH Purge flow system P0441 83H 0CH Difference in pressure sensor output
voltage before and after vent control
valve close
O2 SEN-
SOR
HEATER 41H
A/F sensor 1 heater
(Bank 1) Low Input:P0031
High Input:P0032 81H 0BHConverted value of Heater electric cur-
rent to voltage
42H Heated oxygen sensor 2 heat-
er (Bank 1) Low Input:P0037
High Input:P0038 80H 0CH
Converted value of Heater electric cur-
rent to voltage
43H Heated oxygen sensor 3 heat-
er (Bank 1) P0043 80H 0CHConverted value of Heater electric cur-
rent to voltage
45H A/F sensor 1 heater
(Bank 2) Low Input:P0051
High Input:P0052
81H 0BHConverted value of Heater electric cur-
rent to voltage
46H Heated oxygen sensor 2 heat-
er (Bank 2) Low Input:P0057
High Input:P0058 80H 0CH
Converted value of Heater electric cur-
rent to voltage
47H Heated oxygen sensor 3 heat-
er (Bank 2) P0063 80H 0CHConverted value of Heater electric cur-
rent to voltage
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

Page 2131 of 5598

INFINITI QX56 2011 Factory Service Manual
ECM
EC-107
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
SEC-
OND-
ARY AIR
71H Secondary Air system P0411 80H 01H
Secondary Air Injection System Incor-
rect Flow Detected
Ba

Page 2132 of 5598

INFINITI QX56 2011 Factory Service Manual
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 100

Page 2133 of 5598

INFINITI QX56 2011 Factory Service Manual
ECM
EC-109
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
MISFIRE A2H No. 1 Cylinder Misfire
P0301 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last

Page 2134 of 5598

INFINITI QX56 2011 Factory Service Manual
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 unde

Page 2135 of 5598

INFINITI QX56 2011 Factory Service Manual
VVEL CONTROL MODULEEC-111
< ECU DIAGNOSIS INFORMATION > [VK56VD]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
5
(L/R) 4
(L/W) VVEL control shaft position
sensor 1 (bank 2)
Input[Engine is running]
Warm-up cond

Page 2136 of 5598

INFINITI QX56 2011 Factory Service Manual
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

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