Nissan Juke Service and Repair Manual : U0140 lost communication (BCM)
Description
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a 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-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 Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Start the engine and wait for at least 5 seconds.
2. Check the DTC.
Is “U0140” detected? YES >> Go to TM-392, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
For the diagnosis procedure, refer to LAN-17, "Trouble Diagnosis Flow Chart".
U0100 lost communication (ECM A)
Description CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle multiplex communication line with high data communication speed and excellen ...U0141 lost communication (BCM A)
Description CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle multiplex communication line with high data communication speed and excellen ...Other materials:
Option harness
Wiring Diagram
For connector terminal arrangements, harness layouts, and alphabets in a
(option abbreviation; if not
described in wiring diagram), refer to GI-12, "Connector Information/Explanation
of Option Abbreviation".
...
System
Engine control system : System Diagram
Engine control system : System Description
ECM performs various controls such as fuel injection control and ignition
timing control.
MULTIPORT FUEL INJECTION SYSTEM
Multiport fuel injection system : System Diagram
Multiport fuel injection system : ...
Steering switch signal A circuit
Description
Transmits the steering switch signal to NAVI control unit.
Diagnosis Procedure
1.CHECK STEERING SWITCH SIGNAL A CIRCUIT
1. Disconnect NAVI control unit connector and spiral cable connector.
2. Check continuity between NAVI control unit harness connector and spiral cable
harness co ...