Nissan Maxima. Manual - part 180
AV-540
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/BOSE & NAVI]
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000009471444
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 independent). 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.
DTC Logic
INFOID:0000000009471445
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000009471446
1.
PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of “AV Control Unit”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to LAN system. Refer to
LAN-15, "Trouble Diagnosis Flow Chart"
.
NO
>> Refer to GI section. Refer to
GI-41, "Intermittent Incident"
.
DTC
Display contents of CON-
SULT
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.