Infiniti QX56 (Z62). Manual — part 66
AV-118
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000006216248
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independently). In CAN communication, control units are connected with 2
communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each
control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to
LAN-28, "CAN COMMUNICATION SYSTEM : CAN Communica-
DTC Logic
INFOID:0000000006216249
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000006216250
1.
PERFORM SELF-DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result” of “MULTI AV”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-18, "Trouble Diagnosis Procedure"
.
NO
>> Refer to
GI-40, "Intermittent Incident"
.
DTC
Display contents of CON-
SULT-III
DTC detection condition
Probable malfunction location
U1000
CAN COMM CIRCUIT
[U1000]
AV control unit is not transmitting or receiving
CAN communication signal for 2 seconds or
more.
CAN communication system.
AV
U1010 CONTROL UNIT (CAN)
AV-119
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1010 CONTROL UNIT (CAN)
DTC Logic
INFOID:0000000006216251
DTC DETECTION LOGIC
DTC
Display contents of CON-
SULT-III
DTC detection condition
Probable malfunction factor
U1010
CONTROL UNIT (CAN)
[U1010]
CAN initial diagnosis malfunction is detected.
Replace the AV control unit if the malfunction
occurs constantly.
Refer to
AV-120
< DTC/CIRCUIT DIAGNOSIS >
U1200 AV CONTROL UNIT
U1200 AV CONTROL UNIT
DTC Logic
INFOID:0000000006216252
DTC
Display contents of
CONSULT-III
DTC detection condition
Possible malfunction factor
U1200
Cont Unit
[U1200]
AV control unit malfunction is detected.
Replace the AV control unit if the mal-
function occurs constantly.
Refer to
AV
U1201 AV CONTROL UNIT
AV-121
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1201 AV CONTROL UNIT
DTC Logic
INFOID:0000000006216253
DTC
Display contents of
CONSULT-III
DTC detection condition
Possible malfunction factor
U1201
GYRO NO CONN
[U1201]
AV control unit malfunction is detected.
Replace the AV control unit if the mal-
function occurs constantly.
Refer to
.
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