1.CHECK FUNCTION

Is the inspection result normal?
YES >> Front door request switch is OK.
NO >> Refer to DLK "Diagnosis Procedure".
Regarding Wiring Diagram information, refer to DLK "INTELLIGENT KEY SYSTEM : Wiring Diagram".
1.CHECK DOOR REQUEST SWITCH INPUT SIGNAL

Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK DOOR REQUEST SWITCH CIRCUIT


Is the inspection result normal?
YES >> Replace BCM. Refer to BCS "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK DOOR REQUEST SWITCH GROUND CIRCUIT
Check continuity between malfunctioning front door request switch harness
connector and ground. 
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK DOOR REQUEST SWITCH
Refer to DLK "Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning front door request switch.
5.CHECK INTERMITTENT INCIDENT
Refer to GI "Intermittent Incident".
>> Inspection End.
1.CHECK DOOR REQUEST SWITCH

Is the inspection result normal?
YES >> Inspection End.
NO >> Replace malfunctioning front door request switch.
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 ...
Primary speed sensor
Exploded View
1. Transaxle assembly 2. O-ring 3. Primary speed sensor
Front
: Genuine NISSAN CVT Fluid NS-3
Removal and Installation
REMOVAL
Remove the front LH wheel and tire. Refer to WT "Adjustment".
Remove the LH fender protector. Refer to EXT "Removal and Install ...