Nissan Sentra B18 (2020-2025) Service Manual: Driver Assistance Buzzer Circuit
Component Function Check
Component Function Check
-
CHECK DRIVER ASSISTANCE BUZZER
CONSULT-
Select “ADAS buzzer 2” in “Active Test” mode of “ICC/ADAS 2”.
-
Check that the function operates normally.
Is the inspection result normal?
YES >>Inspection End.
NO >>Refer to Diagnosis Procedure.
-
Diagnosis Procedure
Diagnosis Procedure
-
CHECK DRIVER ASSISTANCE BUZZER POWER SUPPLY CIRCUIT
-
Turn ignition switch OFF.
-
Disconnect the driver assistance buzzer harness connector.
-
Turn ignition switch ON.
-
Check voltage between the driver assistance buzzer harness connector and ground.
Terminal
Voltage
(Approx.)
(+)
(−)
Driver assistance buzzer
Ground
Connector
Terminal
M149
1
Battery voltage
Is the inspection result normal?
YES >>GO TO 2.
NO >>Repair the driver assistance buzzer power supply circuit.
-
-
CHECK DRIVER ASSISTANCE BUZZER CONTROL CIRCUIT
-
Turn ignition switch OFF.
-
Disconnect the ADAS control unit 2 harness connector.
-
Check continuity between the ADAS control unit 2 harness connector and driver assistance buzzer harness connector.
ADAS control unit 2
Driver assistance buzzer
Continuity
Connector
Terminal
Connector
Terminal
M148
1
M149
1
Yes
-
Check continuity between the ADAS control unit 2 harness connector and ground.
ADAS control unit 2
Ground
Continuity
Connector
Terminal
M148
13
No
Is the inspection result normal?
YES >>Replace the driver assistance buzzer. Refer to Removal and Installation.
NO >>Repair the harness or connector.
-
Other materials:
Intelligent Key Button Operation Has Poor Range (all Keys)
Description
Description
Intelligent Key button operation has poor
range.
SYMPTOM TABLE (BOTH INTELLIGENT KEYS HAVE
THE SAME SYMPTOMS)
Door lock operation (remote
keyless entry)
...
Mode Door Motor
Diagnosis Procedure
Diagnosis Procedure
CHECK MODE DOOR MOTOR POWER SUPPLY
Ignition switch ON.
Check voltage between mode door motor harness connector
and ground.
...
Instrument Panel. Precaution. Precautions
Precautions
Precaution for Supplemental Restraint System (srs) "air Bag" and "seat Belt Pre-Tensioner"
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as
“AIR BAG” and “SEAT BELT PRE-T ...