2008 INFINITI QX56 Factory Service Manual

Page 2505 of 4083

INFINITI QX56 2008  Factory Service Manual LAN-10
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Self-Diagnosis
INFOID:0000000001374968
CAN Diagnostic Support MonitorINFOID:0000000001374969
CONSULT-III and CAN diagnostic support mon

Page 2506 of 4083

INFINITI QX56 2008  Factory Service Manual LAN
TROUBLE DIAGNOSISLAN-11
< FUNCTION DIAGNOSIS > [CAN FUNDAMENTAL]
C
D
E
F
G H
I
J
K L
B A
O P
N
Example: CAN DIAG SUPPORT MNTR indication
Without PAST
With PAST
MONITOR ITEM (ON-BOARD DIAGNOSIS)
NO

Page 2507 of 4083

INFINITI QX56 2008  Factory Service Manual LAN-12
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Example: Vehicle Display 
ItemResult indi-
cated Error counter
Description
CAN_COMM
(Initial diagnosis) OK
0 Normal at present
NG 1 –

Page 2508 of 4083

INFINITI QX56 2008  Factory Service Manual LAN
DIAGNOSIS AND REPAIR WORKFLOWLAN-13
< BASIC INSPECTION > [CAN FUNDAMENTAL]
C
D
E
F
G H
I
J
K L
B A
O P
N
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Information Needed for Trouble DiagnosisINFO

Page 2509 of 4083

INFINITI QX56 2008  Factory Service Manual LAN-14
< BASIC INSPECTION >[CAN FUNDAMENTAL]
DIAGNOSIS AND REPAIR WORKFLOW
Trouble Diagnosis Flow Chart
INFOID:0000000001374972
Trouble Diagnosis ProcedureINFOID:0000000001374973
INTERVIEW WITH CUSTOM

Page 2510 of 4083

INFINITI QX56 2008  Factory Service Manual LAN
DIAGNOSIS AND REPAIR WORKFLOWLAN-15
< BASIC INSPECTION > [CAN FUNDAMENTAL]
C
D
E
F
G H
I
J
K L
B A
O P
N
• Result: Symptom
NOTE:
• Check normal units as well as error symptoms.
- Example: Circ

Page 2511 of 4083

INFINITI QX56 2008  Factory Service Manual LAN-16
< BASIC INSPECTION >[CAN FUNDAMENTAL]
DIAGNOSIS AND REPAIR WORKFLOW
CAN system type is easily checked with the vehicle equi
pment identification information shown in the chart.
CAN System Type

Page 2512 of 4083

INFINITI QX56 2008  Factory Service Manual LAN
DIAGNOSIS AND REPAIR WORKFLOWLAN-17
< BASIC INSPECTION > [CAN FUNDAMENTAL]
C
D
E
F
G H
I
J
K L
B A
O P
N
CAN system type is easily checked wi
th the vehicle equipment identification information sh