Nissan Murano: Door & Lock :: Dtc/circuit Diagnosis / U1000 Can Comm Circuit
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-Nissan Murano vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern Nissan Murano 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 2 communication lines (CAN-High line, CAN-Low line) 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 CAN Communication Signal Chart.
DTC DETECTION LOGIC
| DTC No. |
CONSULT screen items (Trouble diagnosis content) | DTC detecting condition | |
|---|---|---|---|
| U1000–01 |
CAN COMM CIRCUIT (CAN communication circuit) |
Diagnosis condition | All times |
| Signal (terminal) | CAN communication | ||
| Threshold | When automatic back door control module cannot communicate CAN communication signal | ||
| Diagnosis delay time | 2 seconds or more | ||
POSSIBLE CAUSE
CAN communication system
FAIL-SAFE
Inhibit automatic back door system all function
PERFORM DTC CONFIRMATION PROCEDURE
CONSULT
-
Ignition switch OFF.
-
Ignition switch ON and wait for 2 seconds or more.
-
Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.
Is DTC “U1000-01” displayed?
YES>>Refer to DTC Diagnosis Procedure.
NO>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>Confirmation after repair: Inspection End.
PERFORM SELF DIAGNOSTIC
CONSULT
-
Ignition switch OFF.
-
Ignition switch ON and wait for 2 seconds or more.
-
Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.
Is DTC “U1000-01” displayed?
YES>>Refer to Trouble Diagnosis Flow Chart.
NO>>Refer to Intermittent Incident.
U1010 Control Unit(can)
DTC Description
DTC DETECTION LOGIC DTC No.
CONSULT screen items
(Trouble diagnosis content) DTC detecting condition
U1010–49
CONTROL UNIT(CAN)
[Control unit (CAN)]
Diagnosis condition
All times
Signal (terminal)
–
Threshold
Automatic back door control module detected internal CAN communication circuit malfunction
Diagnosis delay time
2 seconds or more
POSSIBLE CAUSEAutomatic back door control moduleFAIL-SAFEInhibit automatic back door system all function
DTC Confirmation Procedure
PERFORM DTC CONFIRMATION PROCEDURE
CONSULT
Ignition switch OFF...
Other information:
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