Nissan Pathfinder. Manual - part 788
LAN
U1000 CAN COMM CIRCUIT
LAN-105
< DTC/CIRCUIT DIAGNOSIS >
[CAN GATEWAY]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000009174993
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with two communication lines (CAN-H and 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-36, "CAN COMMUNICATION SYSTEM : CAN Communica-
DTC Logic
INFOID:0000000009174994
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000009174995
1.
PERFORM SELF DIAGNOSTIC
1. Turn the ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result”.
Is “U1000: CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-20, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-49, "Intermittent Incident"
.
DTC
CONSULT display descrip-
tion
DTC Detection Condition
Possible cause
U1000
CAN COMM CIRCUIT
When CAN gateway cannot communicate
CAN communication signal continuously for 2
seconds or more.
CAN communication system