Nissan Murano: Sonar System :: Dtc/circuit Diagnosis / U1000 Can Comm Circuit
DTC Description
DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-Nissan Murano vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a Nissan Murano 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-High, CAN-Low) 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 terms
(Trouble diagnosis content) | DTC detection condition |
| U1000–01 |
CAN COMM CIRCUIT
(CAN communication circuit) |
Diagnosis condition |
When ignition switch is ON. |
| Signal (terminal) |
— |
| Threshold |
— |
| Diagnosis delay time |
— |
POSSIBLE CAUSE
CAN communication system
FAIL-SAFE
—
DTC Confirmation Procedure
PERFORM DTC CONFIRMATION PROCEDURE
CONSULT
-
Ignition switch ON.
-
Select “Self Diagnostic Result” mode of “SONAR”.
Is DTC U1000–01 detected?
YES>>
Proceed to DTC Diagnosis Procedure.
NO>>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>
Confirmation after repair: Inspection End.
Diagnosis Procedure
PERFORM DTC CONFIRMATION PROCEDURE AGAIN
CONSULT
-
Ignition switch ON.
-
Erase DTC.
-
Select “Self Diagnostic Result” mode of “SONAR”.
Is DTC U1000–01 detected?
YES>>
Perform the trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.
NO>>
Inspection End.
DTC Description
DTC DETECTION LOGIC DTC No.
CONSULT screen terms
(Trouble diagnosis content) DTC detection condition
B2738–11
FRONT SENSOR POWER
(Front sensor power)
—
Diagnosis condition
Ignition switch ON
Signal (terminal)
Front sensor power supply (terminal 11)
Threshold
Front sensor power supply is short to ground
Diagnosis delay time
4 seconds or more
B2738–12
Diagnosis condition
Ignition switch ON
Signal (terminal)
Front sensor power supply (terminal 11)
Threshold
Front sensor power supply is short to voltage
Diagnosis delay time
4 seconds or more
B2738–87
Diagnosis condition
Ignition switch ON
Signal (terminal)
Front sensor power supply (terminal 11)
Threshold
Connection error is detected between sonar control unit and Front sonar sensors
Diagnosis delay time
4 seconds or more
POSSIBLE CAUSE
Harness or connectors
Sonar control unit
FAIL-SAFEObstacle detection function is deactivated
DTC Confirmation Procedure
DTC CONFIRMATION PROCEDURE
CONSULT
Ignition switch ON...
Diagnosis Procedure
CHECK FUSE
Check that the following fuse is not blown:
Terminal No. Signal name Fuse No. Capacity
12
IGN power supply
29
10 A
Is the fuse blown?
YES>>
Replace the blown fuse after repairing the affected circuit...
Other information:
Seat Belt Warning Chime
SYSTEM DIAGRAMWARNING OPERATION CONDITIONSFront Seat BeltsIf all of the following conditions are fulfilled: Operation conditions
Ignition switch
ON
Nissan Murano Vehicle speed
Approximately 9.3 mph (15 km/h) or more.
Front seat belt buckle switch LH
Unfastened (front seat belt buckle switch LH ON)
Front seat belt buckle switch RH
Front passenger seat is occupied, seat belt unfastened (front seat belt buckle switch RH ON)...
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P2765
INPUT SPEED SENSOR B
(Input/Turbine Speed Sensor B Circuit)
Diagnosis condition
When all of the following conditions are satisfied:
TCM power supply voltage: More than 11 V
After range change completion, it spends 2 seconds or more...