OBD port INFINITI QX56 2011 Factory Service Manual

EC-14
< PREPARATION >[VK56VD]
PREPARATION
PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000006217654
Commercial Service ToolsINFOID:0000000006217655
Tool number
(Kent-Moore No.)
Tool nameDescription
KV10118400
(—)
Fuel tube adapter Measures fuel pressure
PBIB3043E
Tool name
(Kent-Moore No.)
Description
Leak detector
i.e.: (J-41416) Locates the EVAP leak
EVAP service port adapter
i.e.: (J-41413-OBD) Applys positive pressure through EVAP service
port
Fuel filler cap adapter
i.e.: (MLR-8382) Checks fuel tank vacuum relief valve opening
pressure
Socket wrench Removes and installs engine coolant temperature sensor
S-NT703
S-NT704
S-NT815
S-NT705
Revision: 2010 May2011 QX56

EC-58
< SYSTEM DESCRIPTION >[VK56VD]
DIAGNOSIS SYSTEM (ECM)
DIAGNOSIS DESCRIPTION : Driving Pattern
INFOID:0000000006217725
DRIVING PATTERN A
 The A counter will be cleared when the malfunction is detected regardless of (1) - (4).
 The A counter will be counted up when (1) - (4) are satisfied without the same malfunction.
 The DTC will not be displayed after the A counter reaches 40.
DRIVING PATTERN B
Driving pattern B means operating vehicle operation as per the following:
All components and systems should be monito red at least once by the OBD system.
 The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
 The B counter will be counted up when driving patt ern B is satisfied without any malfunctions.
 The MIL will turn OFF when the B counter reaches 3.
DRIVING PATTERN C
Driving pattern C means operating vehicle as per the following:
The following conditions should be satisfied at the same time:
Engine speed: (Engine speed in the freeze frame data) ±375 rpm
Calculated load value: (Calculated load value in the freeze frame data) x (1 ±0.1) [%]
Engine coolant temperature (T) condition:
 When the freeze frame data shows lower than 70 °C (158 °F), T should be lower than 70 °C (158 °F).
 When the freeze frame data shows higher than or equal to 70 °C (158 °F), T should be higher than or equal to
70 °C (158 °F).
 The C counter will be cleared when the malfunction is detected regardless of vehicle conditions above.
 The C counter will be counted up when vehicle conditions above are satisfied without the same malfunction.
 The DTC will not be displayed after C counter reaches 80.
 The 1st trip DTC will be cleared when C counter is c ounted once without the same malfunction after DTC is
stored in ECM.
DIAGNOSIS DESCRIPTION : System Readiness Test (SRT) CodeINFOID:0000000006217726
System Readiness Test (SRT) code is spec ified in Service $01 of SAE J1979/ISO 15031-5.
As part of an enhanced emissions test for Inspection & Ma intenance (I/M), certain states require the status of
SRT be used to indicate whether the ECM has completed self-diagnosis of major emission s\
ystems and com-
ponents. Completion must be verified in order for the emissions inspection to proceed.
If a vehicle is rejected for a State emissions inspec tion due to one or more SRT items indicating “INCMP”, use
the information in this Service Manual to set the SRT to “CMPLT”.
In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT
status will indicate “CMPLT” for each application system . Once set as “CMPLT”, the SRT status remains
“CMPLT” until the self-diagnosis memory is erased.
Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's
normal driving pattern; the SRT will indicate “INCMP” for these items.
NOTE:
JMBIA1920GB
Revision: 2010 May2011 QX56

LAN
TROUBLE DIAGNOSISLAN-15
< SYSTEM DESCRIPTION > [CAN FUNDAMENTAL]
C
D
E
F
G H
I
J
K L
B A
O P
N
Self-DiagnosisINFOID:0000000006220520
CAN Diagnostic Support MonitorINFOID:0000000006220521
MONITOR ITEM (CONSULT-III)
Example: CAN DIAG SUPPORT MNTR indication
Without PAST
DTC
Self-diagnosis item
(CONSULT-III indication) DTC detection condition Inspection/Action
U0101 LOST COMM (TCM) When ECM is not transmitting or receiving CAN communi-
cation signal of OBD (emission-related diagnosis) from
TCM for 2 seconds or more.
Start the inspection. Re-
fer to the applicable sec-
tion of the indicated
control unit.
U0140 LOST COMM (BCM)
When ECM is not transmitting or receiving CAN communi-
cation signal of OBD (emission-related diagnosis) from
BCM for 2 seconds or more.
U0164 LOST COMM (HVAC) When ECM is not transmitting or receiving CAN communi-
cation signal of OBD (emission-related diagnosis) from A/
C auto amp. or unified meter and A/C amp. for 2 seconds
or more.
U1000 CAN COMM CIRCUIT ECM
When ECM is not transmitting or receiving CAN
communication signal of OBD (emission-relat-
ed diagnosis) for 2 seconds or more.
Except
for ECM When a control unit (except for ECM) is not
transmitting or receiving CAN communication
signal for 2 seconds or more.
U1001 CAN COMM CIRCUIT When ECM is not transmitting or receiving CAN communi-
cation signal other than OBD (emission-related diagnosis)
for 2 seconds or more.
U1002 SYSTEM COMM When a control unit is not transmitting or receiving CAN
communication signal for 2 seconds or less.
U1010 CONTROL UNIT(CAN) When an error is detected during the initial diagnosis for
CAN controller of each control unit. Replace the control unit
indicating “U1010” or
“P0607”.
P0607 ECM
U1507 LOST COMM (SIDE RDR R) When ADAS control unit is not receiving CAN communica-
tion signal from side radar RH for 2 seconds or more. Start the inspection. Re-
fer to the applicable sec-
tion of the indicated
control unit.
U1508 LOST COMM (SIDE RDR L) When ADAS control unit is not receiving CAN communica-
tion signal from side radar LH for 2 seconds or more.
JSMIA0015GB
Revision: 2010 May2011 QX56

PG-6
< SYSTEM DESCRIPTION >
COMPONENT PARTS
[Example]
HARNESS CONNECTOR (SLIDE-LOCKING TYPE)
 A new style slide-locking type connector is used on certain systems and components, especially those
related to OBD.
 The slide-locking type connectors help prevent incomplete locking and accidental looseness or disconnec-
tion.
 The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the figure below.
CAUTION:
 Never pull the harness or wires when disconnecting the connector.
 Be careful not to damage the connector su pport bracket when disconnecting the connector.
SEL769DA
Revision: 2010 May2011 QX56