Nissan Sentra Service Manual: U0140 Lost communication (BCM)
DTC Logic
DTC DETECTION LOGIC
| DTC | CONSULT screen terms [Trouble diagnosis content] | DTC detection condition | Possible causes |
| U0140 | LOST COMM (BCM) [Lost Communication With Body Control Module] | When the ignition switch is ON, TCM is unable to receive the CAN communications signal from BCM continuously for 2 seconds or more. |
|
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
- Start the engine and wait for at least 5 seconds.
- Check the DTC.
Is “U0140” detected? YES >> Go to TM-154, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
For the diagnosis procedure, refer to LAN-16, "Trouble Diagnosis Flow Chart".
U0141 LOST COMMUNICATION (BCM A)
DTC Logic
DTC DETECTION LOGIC
| DTC | CONSULT screen terms [Trouble diagnosis content] | DTC detection condition | Possible causes |
| U0141 | LOST COMM (BCM A) [Lost Communication With Body Control Module A] | When the ignition switch is turned ON, TCM continues no reception of the CAN communication signal from IPDM E/R for 2 seconds or more. |
|
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
- Start the engine and wait for at least 5 seconds.
- Check the DTC.
Is “U0141” detected? YES >> Go to TM-155, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
For the diagnosis procedure, refer to LAN-16, "Trouble Diagnosis Flow Chart".
DTC/Circuit diagnosis
U0073 COMMUNICATION BUS A OFF
DTC Logic
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
U0073
COMM BU ...
U0155 Lost communication (IPC)
DTC Logic
DTC DETECTION LOGIC
DTC
CONSULT screen terms
[Trouble diagnosis content]
DTC detection condition
Possible causes
U0155
LOST COMM (IPC)
[Lost Communication ...
Other materials:
Interior lights
The interior light can be turned ON regardless
of door position. The light will go off after
a period of time unless the ignition switch is
placed in the ON position when any door is
opened.
The interior lights can be set to operate
when the doors are opened. To turn off the
int ...
Brake pedal
Adjustment
BRAKE PEDAL HEIGHT
Remove instrument lower panel LH. Refer to IP-21, "Removal and
Installation".
Disconnect the harness connectors from the brake pedal position switch
(if equipped) and the stop lamp
switch.
Turn the stop lamp switch and brake pedal position swi ...
Washing
Wash dirt off with a wet sponge and plenty of
water. Clean the vehicle thoroughly using a mild
soap, a special vehicle soap or general purpose
dishwashing liquid mixed with clean, lukewarm
(never hot) water.
CAUTION
Do not use car washes that use acid in
the detergent. Some car washes, es ...
