2009 INFINITI QX56 Factory Service Manual

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Page 2617 of 4171

INFINITI QX56 2009 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

Page 2618 of 4171

INFINITI QX56 2009 Factory Service Manual LAN
TROUBLE DIAGNOSISLAN-49
< FUNCTION DIAGNOSIS > [CAN]
C
D
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F
G H
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B A
O P
N
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
A/C Auto Amp.
0: Error at present, 1

Page 2619 of 4171

INFINITI QX56 2009 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
< 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 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 KEEP 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
Revision: December 20092009 QX56

Page 2620 of 4171

INFINITI QX56 2009 Factory Service Manual LAN
TROUBLE DIAGNOSISLAN-51
< FUNCTION DIAGNOSIS > [CAN]
C
D
E
F
G H
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K L
B A
O P
N
Never replace the unit even when “NG” is indicated on the “INITIAL DIAG” at this stage. Fo
llow the troub

Page 2621 of 4171

INFINITI QX56 2009 Factory Service Manual LAN-52
< COMPONENT DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
COMPONENT DIAGNOSIS
CAN COMMUNICATION SYSTEM
Component Parts LocationINFOID:0000000003776457
1. ECM E16
2. IPDM E/R E122 3. ICC sensor E42

Page 2622 of 4171

INFINITI QX56 2009 Factory Service Manual LAN
CAN COMMUNICATION SYSTEMLAN-53
< COMPONENT DIAGNOSIS > [CAN]
C
D
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Wiring Diagram - CAN SYSTEM -INFOID:0000000003776458
AAMWA0005GB
Revision: December 20092009 QX56

Page 2623 of 4171

INFINITI QX56 2009 Factory Service Manual LAN-54
< COMPONENT DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
ALMWA0061GB
Revision: December 20092009 QX56

Page 2624 of 4171

INFINITI QX56 2009 Factory Service Manual LAN
CAN COMMUNICATION SYSTEMLAN-55
< COMPONENT DIAGNOSIS > [CAN]
C
D
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F
G H
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B A
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N
AAMIA0012GB
Revision: December 20092009 QX56

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