Nissan Murano: Dtc/circuit Diagnosis / U0101 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 independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
DTC DETECTION LOGIC
When ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) with TCM for 2 seconds or more.
| DTC |
CONSULT screen terms
(Trouble diagnosis content) |
DTC detection condition |
| U0101 |
LOST COMM (TCM)
(Lost Communication with TCM) |
Diagnosis condition |
Ignition switch ON |
| Signal (terminal) |
CAN communication signal |
| Threshold |
ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) with TCM. |
| Diagnosis delay time |
2 seconds or more |
POSSIBLE CAUSE
FAIL-SAFE
| Engine operating condition in fail-safe mode |
| Fail safe mode | Nissan Murano Vehicle behavior |
| CAN communication line |
ECM operates active grille shutter to fully-open position. |
DTC Confirmation Procedure
PERFORM DTC CONFIRMATION PROCEDURE
-
Turn ignition switch ON and wait at least 3 seconds.
-
Check DTC.
Is DTC detected?
YES>>
Proceed to Diagnosis Procedure.
NO>>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>
Confirmation after repair: INSPECTION END
Diagnosis Procedure
Perform the trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow .
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
C053C
Wheel speed sensor
(Wheel speed sensor generic range/performance)
Diagnosis condition
Engine running
Signal
Nissan Murano Vehicle speed signal
Threshold
Wheel sensor signal is invalid...
DTC Description
DTC DETECTION LOGICWhen ECM cannot receive the engine communication signal from active grille shutter. DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
U0284
LOST COMM (A/GRLL SHTTR MDL A)
(Lost communication with active grille air shutter module A)
Diagnosis condition
Ignition switch ON
Signal (terminal)
Engine communication signal
Threshold
ECM cannot receive the engine communication signal from active grille shutter
Diagnosis delay time
—
POSSIBLE CAUSE
Harness and connectors (Engine communication line is open or circuit shorted...
Other information:
System Description
SYSTEM DIAGRAMDISTANCE SENSOR (ICC SENSOR) INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description
ADAS control unit
ITS communication
ADAS sensor signal
State of ADAS
Output Signal Item Reception unit Signal name Description
ADAS control unit
ITS communication
Distance sensor (ICC sensor) signal
Transmits information for ICC
ADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Reception unit Signal name Description
ECM
CAN communication
Engine speed signal
Receives engine speed
Accelerator pedal position signal
Receives accelerator pedal position (angle)
Closed throttle position signal
Receives idle position state (ON/OFF)
ICC prohibition signal
Receives operable/inoperable state of the ICC system
ICC steering switch signal
Main switch signal
Receives the operational state of the ICC steering switch
SET/COAST switch signal
CANCEL switch signal
RESUME/ACCELERATE switch signal
DISTANCE switch signal
Stop lamp switch signal
Receives an operational state of the brake pedal
Brake pedal position switch signal
Receives an operational state of the brake pedal
TCM
CAN communication
Input speed signal
Receives the number of revolutions of input shaft
Output shaft revolution signal
Receives the number of revolutions of output shaft
Current gear position signal
Receives a current gear position
Shift position signal
Receives a selector lever position
ABS actuator and electric unit (control unit)
CAN communication
ABS malfunction signal
Receives a malfunction state of ABS
ABS operation signal
Receives an operational state of ABS
ABS warning lamp signal
Receives an ON/OFF state of ABS warning lamp
TCS malfunction signal
Receives a malfunction state of TCS
TCS operation signal
Receives an operational state of TCS
VDC OFF switch signal
Receives an ON/OFF state of VDC
VDC malfunction signal
Receives an malfunction state of VDC
VDC operation signal
Receives an operational state of VDC
Nissan Murano Vehicle speed signal (ABS)
Receives wheel speeds of four wheels
Stop lamp switch signal
Receives an operational state of the brake pedal
Yaw rate signal
Receives yaw rate acting on Nissan Murano vehicle
Combination meter
CAN communication
Parking brake switch signal
Receives an operational state of the parking brake
System selection signal
Receives a selection state of AEB system
Steering angle sensor
CAN communication
Steering angle sensor malfunction signal
Receives a malfunction state of steering angle sensor
Steering angle sensor signal
Receives the number of revolutions and turning direction of the steering wheel
Steering angle speed signal
Receives the turning angle speed of the steering wheel
Distance sensor (ICC sensor)
ITS communication
Distance sensor (ICC sensor) signal
Receives detection information, such as the presence or absence of a leading Nissan Murano vehicle, and distance from the vehicle...
System Description
SYSTEM DIAGRAMDESCRIPTION
Controls for improvement of the transmission efficiency by engaging the torque converter clutch in the torque converter and eliminating slip of the converter. Achieves comfortable driving with slip control of the torque converter clutch...