turn signal INFINITI QX56 2010 Factory Service Manual
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< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
DTC Inspection Priority Chart
INFOID:0000000005337693
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000005337694
NOTE: Details of time display
• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni- tion switch OFF → ON again.
• 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condition if the malfunction is detected again.
Display contents of CONS ULTFail-safe Cancellation
U1000: CAN COMM CIRCUIT I nhibit engine crankingWhen the BCM re-establishes communication with the other mod-
ules.
Priority
DTC
1 • U1000: CAN COMM CIRCUIT
2 • B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM
• B2013: STRG COMM 1
• B2552: INTELLIGENT KEY
• B2590: NATS MALFUNCTION
3 • C1729: VHCL SPEED SIG ERR
• C1735: IGNITION SIGNAL
4 • C1708: [NO DATA] FL
• C1709: [NO DATA] FR
• C1710: [NO DATA] RR
• C1711: [NO DATA] RL
• C1712: [CHECKSUM ERR] FL
• C1713: [CHECKSUM ERR] FR
• C1714: [CHECKSUM ERR] RR
• C1715: [CHECKSUM ERR] RL
• C1716: [PRESSDATA ERR] FL
• C1717: [PRESSDATA ERR] FR
• C1718: [PRESSDATA ERR] RR
• C1719: [PRESSDATA ERR] RL
• C1720: [CODE ERR] FL
• C1721: [CODE ERR] FR
• C1722: [CODE ERR] RR
• C1723: [CODE ERR] RL
• C1724: [BATT VOLT LOW] FL
• C1725: [BATT VOLT LOW] FR
• C1726: [BATT VOLT LOW] RR
• C1727: [BATT VOLT LOW] RL
CONSULT display
Fail-safeIntelligent Key
warning lamp ON Tire pressure
monitor warning lamp ON Reference page
No DTC is detected.
further testing
may be required. ————
U1000: CAN COMM CIRCUIT ———BCS-32
B2190: NATS ANTENNA AMP ———SEC-31
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TROUBLE DIAGNOSIS
Condition of Error DetectionINFOID:0000000005152906
DTC of CAN communication is indi](/img/42/57032/w960_57032-2604.png "INFINITI QX56 2010 Factory Service Manual LAN
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TROUBLE DIAGNOSIS
Condition of Error DetectionINFOID:0000000005152906
DTC of CAN communication is indi")
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Condition of Error DetectionINFOID:0000000005152906
DTC of CAN communication is indicated on SELF-DIA
G RESULTS on CONSULT-III if a CAN communication
signal is not transmitted or received between units for 2 seconds or more.
NOTE:
DTCs of CAN communication are follows:
• U0101
• U0140
• U0164
• U1000
• U1001
CAN COMMUNICATION SYSTEM ERROR
• CAN communication line open (CAN-H, CAN-L, or both)
• CAN communication line short (ground, betw een CAN communication lines, other harnesses)
• Error of CAN communication control circuit of the unit connected to CAN communication line
WHEN DTC OF CAN COMMUNICATION IS INDICATED EVEN THOUGH CAN COMMUNICATION
SYSTEM IS NORMAL
• Removal/installation of parts: Error may be detec ted when removing and installing CAN communication unit
and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be
detected.)
• Fuse blown out (removed): CAN communication of the unit may cease.
• Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition switch ON (Depending on the control unit which carries out CAN communication).
• Error may be detected if the power supply circuit of the control unit, which carries out CAN communication,
malfunctions (Depending on the control unit which carries out CAN communication).
• Error may be detected if reprogramming is not completed normally.
CAUTION:
CAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG
RESULTS of CONSULT-III under th e above conditions. Erase the memory of the self-diagnosis of each
unit.
Symptom When Error Occurs in CAN Communication SystemINFOID:0000000005146445
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit
and receive signals if any error occurs on CAN communicati on line. Under this condition, multiple control units
related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE
NOTE:
• Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring.
• Refer to LAN-36, "
Abbreviation List" for the unit abbreviation.
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NOTE:
• When data link connector branch line is open, transmi
ssion and reception of CAN communicati](/img/42/57032/w960_57032-2606.png "INFINITI QX56 2010 Factory Service Manual LAN
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NOTE:
• When data link connector branch line is open, transmi
ssion and reception of CAN communicati")
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NOTE:
• When data link connector branch line is open, transmi
ssion and reception of CAN communication signals
are not affected. Therefore, no symptoms occur. However, be sure to repair malfunctioning circuit.
• When data link connector branch line is open, “ECU list ” displayed on the CONSULT-III “CAN DIAG SUP-
PORT MNTR” may be the same as when the CAN comm unication line has short-circuit. However, symp-
toms differ depending on the case. See below chart for the differences.
Example: Main Line Between Data Link Connector and ABS Actuator and Electr ic Unit (Control Unit) Open Circuit
Unit name Symptom
ECM
Normal operation.
BCM
EPS control unit
Combination meter
ABS actuator and electric
unit (control unit)
TCM
IPDM E/R
“ECU list” on the “CAN DIAG SUPPORT MNTR”(CONSULT-III) Difference of symptom
Data link connector branch line open circuit All Diag on CAN units are not
indicated.Normal operation.
CAN-H, CAN-L harness short-circuit Most of the units which are connected to the CAN
communication system enter fail-safe mode or are
deactivated.
SKIB8740E
Unit name
Symptom
ECM Engine torque limiting is affected, and shift harshness increases.
BCM • Reverse warning chime does not sound.
• The front wiper moves under continuous operation mode even though the front wip-
er switch being in the intermittent position.
EPS control unit The steering effort increases.
Combination meter • The shift position indicator and OD OFF indicator turn OFF.
• The speedometer is inoperative.
• The odo/trip meter stops.
ABS actuator and electric unit (control unit) Normal operation.
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DIAGNOSIS AND REPAIR WORKFLOWLAN-31
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b. Reception item of “ABS”: Assume that the unit
could not receive the signal from ECM](/img/42/57032/w960_57032-2628.png "INFINITI QX56 2010 Factory Service Manual LAN
DIAGNOSIS AND REPAIR WORKFLOWLAN-31
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b. Reception item of “ABS”: Assume that the unit
could not receive the signal from ECM")
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b. Reception item of “ABS”: Assume that the unit
could not receive the signal from ECM. Draw a line
between ABS and ECM (line 3-b in the figure below).
4. Search for the possible cause using CAN communication signal chart using information from the interview with the customer.
NOTE:
For the details of CAN communication signal, refer to LAN-44, "
CAN Communication Signal Chart".
a. ABS warning lamp turned ON and speedometer did not move: This means that “ABS warning lamp signal”
and “Vehicle speed signal” could not communicate between M&A and ABS (4-a in the figure below).
PKID1223E
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DIAGNOSIS AND REPAIR WORKFLOW
b. The tachometer moved normally: This means that “Engine speed signal” could communicate normally
between ECM and M&A (4](/img/42/57032/w960_57032-2629.png "INFINITI QX56 2010 Factory Service Manual LAN-32
< BASIC INSPECTION >[CAN FUNDAMENTAL]
DIAGNOSIS AND REPAIR WORKFLOW
b. The tachometer moved normally: This means that “Engine speed signal” could communicate normally
between ECM and M&A (4")
LAN-32
< BASIC INSPECTION >[CAN FUNDAMENTAL]
DIAGNOSIS AND REPAIR WORKFLOW
b. The tachometer moved normally: This means that “Engine speed signal” could communicate normally
between ECM and M&A (4-b in the figure below).
5. Fill out the diagnosis sheet based on information from step 4.
a. The ABS warning lamp turned ON and speedometer did not move: Assume that a possible cause is no communication between M&A and ABS. Draw a line between M&A and ABS. (Line 5-a in the figure
below).
SKIB8895E
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< FUNCTION DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
NOTE:
CAN data of the air bag diagnosis sensor unit is not us
ed by usual service work, thus it is omitted.
Tire pressure data signal R T
T](/img/42/57032/w960_57032-2643.png "INFINITI QX56 2010 Factory Service Manual LAN-46
< FUNCTION DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
NOTE:
CAN data of the air bag diagnosis sensor unit is not us
ed by usual service work, thus it is omitted.
Tire pressure data signal R T
T")
LAN-46
< FUNCTION DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
NOTE:
CAN data of the air bag diagnosis sensor unit is not us
ed by usual service work, thus it is omitted.
Tire pressure data signal R T
Tire pressure signal R TR
Turn indicator signal TR
Buzzer output signal TR
Door lock/unlock request signal RT
Hazard request signal RT
Hazard warning lamp request signal RT
Ignition knob switch signal RT
KEY warning signal TR
LOCK warning signal TR
Panic alarm request signal RT
Power window open request signal RT
1st position switch signal R T
4th position switch signal R T
Distance to empty signal RT
Fuel level low warning signal RT
Fuel level sensor signal R T
Parking brake switch signal RT
Seat belt buckle switch signal RT
Stop lamp switch signal R T
Tow mode switch signal R T
Vehicle speed signal RRR RRR R T
RRRT
Steering angle sensor signal TR
ABS malfunction signal RT
ABS warning lamp signal RT
Brake pressure sensor signal RT
Brake warning lamp signal RT
SLIP indicator lamp signal RT
TCS malfunction signal RT
VDC malfunction signal RT
VDC OFF indicator lamp signal RRT
VDC operation signal RT
Front wiper stop position signal RT
High beam status signal R T
Hood switch signal RT
Low beam status signal R T
Rear window defogger control signal R RT
Signal name/Connecting unit
ECM
TCM
LASER ICC
ADP
AV
BCM
HVAC I-KEY M&A
STRG 4WDABS
IPDM-E
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CAN Diagnostic Support MonitorINFOID:0000000005146464
Use “CAN DIAG SUPPORT MNTR” for detec](/img/42/57032/w960_57032-2644.png "INFINITI QX56 2010 Factory Service Manual LAN
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TROUBLE DIAGNOSIS
CAN Diagnostic Support MonitorINFOID:0000000005146464
Use “CAN DIAG SUPPORT MNTR” for detec")
LAN
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CAN Diagnostic Support MonitorINFOID:0000000005146464
Use “CAN DIAG SUPPORT MNTR” for detecting the root cause.
MONITOR ITEM LIST (CONSULT-III)
ECM
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→
ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
TCM
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
ICC Unit
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
ITEMCAN DIAG SUP-
PORT MNTR Description Normal
Error
PRSNT PAST PRSNT PAST
ECM TRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0
VDC/TCS/ABS
Signal receivin
g status from the ABS actua-
tor and electric unit (control unit)
METER/M&A Signal receiving status from the combina-
tion meter
BCM/SEC Signal receiving status from the BCM
ICC Signal receiving status from the ICC unit
HVAC Not used even though indicated
TCM Signal receiving status from the TCM OKOK
or
1 – 39
*UNKWN 0
EPS Not used even though indicated
IPDM E/R Signal receiving status from the IPDM E/R OK OK
or
1 – 39
*UNKWN 0
e4WD Not used even though indicated
AWD/4WD Signal receiving status from the transfer
control unit OKOK
or
1 – 39
*UNKWN 0
ITEM CAN DIAG SUP-
PORT MNTR DescriptionNormal Error
PRSNT
TCM INITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN
ECM Signal receiving status from the ECM
VDC/TCS/ABS
Signal receiving status from the ABS
actuator and electric unit (con-
trol unit)
METER/M&A Signal receiving status from the combination meter
ICC/e4WD Signal receiving status from the ICC unit
AWD/4WD Signal receiving status from the transfer control unit
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Driver Seat Control Unit
0: Error at present, 1 – 39: Error in the past (Number m
eans the number of times the ignition switch is turned OFF →O](/img/42/57032/w960_57032-2645.png "INFINITI QX56 2010 Factory Service Manual LAN-48
< FUNCTION DIAGNOSIS >[CAN]
TROUBLE DIAGNOSIS
Driver Seat Control Unit
0: Error at present, 1 – 39: Error in the past (Number m
eans the number of times the ignition switch is turned OFF →O")
LAN-48
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TROUBLE DIAGNOSIS
Driver Seat Control Unit
0: Error at present, 1 – 39: Error in the past (Number m
eans the number of times the ignition switch is turned OFF →ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
AV Control Unit
0: Error at present, 1 – 39: Error in the past (Number m eans the number of times the ignition switch is turned OFF →ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
BCM
ITEM CAN DIAG SUP-
PORT MNTR DescriptionNormal Error
PRSNT
ICC INITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN
ECM
Signal receiving status from the ECM
VDC/TCS/ABS Signal receiving status from the ABS actuator and electric unit (con-
trol unit)
TCM Signal receiving status from the TCM
METER/M&A Not used even though indicated
LANE KEEP
ECM (l)
ICC SENSOR Signal receiving status from the ICC sensor OK UNKWN
STRG
Not used even though indicated
METER/M&A (l)
ERROR (l)
LANE DETEC-
TOR
TCM (l)
BCM/SEC Signal receiving status from the BCM
OK UNKWN
ITEMCAN DIAG SUP-
PORT MNTR Description Normal
Error
PRSNT PAST PRSNT PAST
ADP TRANSMIT DIAG
Not used even though indicated
METER/M&A Signal receiving status from the combina-
tion meter
OKOK
or
1 – 39
*UNKWN 0
BCM/SEC Signal receiving status from the BCM
TCM Signal receiving status from the TCM
ITEMCAN DIAG SUP-
PORT MNTR Description Normal
Error
PRSNT PAST PRSNT PAST
AV TRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0
ECM
Signal receiving status from the ECM
METER/M&A Signal receiving status from the combina-
tion meter
BCM/SEC Signal receiving status from the BCM
HVAC Signal receiving status from the A/C auto
amp.
STRG Not used even though indicated
IPDM E/R Signal receiving status from the IPDM E/R OK OK
or
1 – 39
*UNKWN 0
TIRE-P Not used even though indicated
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NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
A/C Auto Amp.
0: Error at present, 1](/img/42/57032/w960_57032-2646.png "INFINITI QX56 2010 Factory Service Manual LAN
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NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
A/C Auto Amp.
0: Error at present, 1")
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NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
A/C Auto Amp.
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→
ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
Intelligent Key Unit
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
Combination Meter
ITEMCAN DIAG SUP-
PORT MNTR DescriptionNormal Error
PRSNT
BCM INITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN
ECM Signal receiving status from the ECM
IPDM E/R Signal receiving status from the IPDM E/R
METER/M&A Signal receiving status from the combination meter
I-KEY Not used even though indicated
ITEM
CAN DIAG SUP-
PORT MNTR Description Normal
Error
PRSNT PAST PRSNT PAST
HVAC TRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0
ECM Signal receiving status from the ECM
TCM Not used even though indicated
BCM/SEC Signal receiving status from the BCM OKOK
or
1 – 39
*UNKWN 0
VDC/TCS/ABS Signal receivin
g status from the ABS actua-
tor and electric unit (control unit)
IPDM E/R Not used even though indicated
DISPLAY Signal receiving status from the AV control
unit
OKOK
or
1 – 39
*UNKWN 0
I-KEY
Not used even though indicated
EPS
AWD/4WD
e4WD
ICC
LANE CAMERA
TIRE-P
ITEM
CAN DIAG SUP-
PORT MNTR Description Normal
Error
PRSNT PAST PRSNT PAST
I-KEY TRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0
ECM
Signal receiving status from the ECM
METER/M&A Signal receiving status from the combina-
tion meter
BCM/SEC Signal receiving status from the BCM
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0: Error at present, 1 – 39: Error in the past (Number m
eans the number of times the ignition switch is turned OFF →ON)
*: 39 or higher number](/img/42/57032/w960_57032-2647.png "INFINITI QX56 2010 Factory Service Manual LAN-50
< FUNCTION DIAGNOSIS >[CAN]
TROUBLE DIAGNOSIS
0: Error at present, 1 – 39: Error in the past (Number m
eans the number of times the ignition switch is turned OFF →ON)
*: 39 or higher number")
LAN-50
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TROUBLE DIAGNOSIS
0: Error at present, 1 – 39: Error in the past (Number m
eans the number of times the ignition switch is turned OFF →ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
Transfer Control Unit
0: Error at present, 1 – 39: Error in the past (Number m eans the number of times the ignition switch is turned OFF →ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
ABS Actuator and Electric Unit (Control Unit)
CAUTION:ITEM
CAN DIAG SUP-
PORT MNTR Description Normal
Error
PRSNT PAST PRSNT PAST
M&A TRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0
ECM
Signal receiving status from the ECM
TCM Signal receiving status from the TCM
BCM/SEC Signal receiving status from the BCM
VDC/TCS/ABS Signal receiving stat
us from the ABS actua-
tor and electric unit (control unit)
IPDM E/R Signal receiving status from the IPDM E/R
DISPLAY Not used even though indicated
I-KEY Signal receiving status from the Intelligent
Key unit
OKOK
or
1 – 39
*UNKWN 0
EPS Not used even though indicated
AWD/4WD
e4WD
ICC Signal receiving status from the ICC unit OK OK
or
1 – 39
*UNKWN 0
LANE CAMERA Not used even though indicated
TIRE-P
ITEM CAN DIAG SUP-
PORT MNTR Description Normal
Error
PRSNT PAST PRSNT PAST
4WD TRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0
ECM
Signal receiving status from the ECM
VDC/TCS/ABS Signal receiving stat
us from the ABS actua-
tor and electric unit (control unit)
TCM Signal receiving status from the TCM
STRG Signal receiving status from the steering an-
gle sensor
ITEMCAN DIAG SUP-
PORT MNTR DescriptionNormal Error
PRSNT
ABS INITIAL DIAG Status of CAN controller
OKNG
Caution
TRANSMIT DIAG Signal transmission status
UNKWN
ECM Signal receiving status from the ECM
TCM Signal receiving status from the TCM
METER/M&A Not used even though indicated
STRG Signal receiving status from the steering angle sensor
OK UNKWN
ICC Signal receiving status from the ICC unit
AWD/4WD Signal receiving status from the transfer control unit
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