Nissan Sentra Service Manual: The parking brake release warning continues sounding, or does not sound
Description
- The parking brake warning buzzer sounds continuously during vehicle travel though the parking brake is released.
- The parking brake warning buzzer does not sound at all even though driving the vehicle with the parking brake applied.
Diagnosis procedure
1.Check parking brake warning lamp
- Start the engine.
- Check the operation of the brake warning lamp by operating the parking brake.
Is the inspection result normal? Yes >> replace combination meter. Refer to mwi-77, "removal and installation".
No >> go to 2.
2.Check parking brake switch signal circuit
Check the parking brake switch signal circuit. Refer to mwi-60, "diagnosis procedure".
Is the inspection result normal? Yes >> go to 3.
No >> repair or replace harness or connector.
3.Check parking brake switch
Check the parking brake switch. Refer to mwi-61, "component inspection".
Is the inspection result normal? Yes >> replace combination meter. Refer to mwi-77, "removal and installation".
No >> replace parking brake switch. Refer to pb-7, "exploded view".
Warning chime system symptoms
Symptom table
Caution:
Perform the self-diagnosis with consult before the symptom diagnosis.
Perform the trouble diagnosis
if any dtc is detected.
...
The seat belt reminder warning
continues sounding, or does not
sound
Description
Seat belt reminder warning does not sound.
Seat belt reminder warning sounds continuously.
Diagnosis procedure
1.Check seat belt warning lamp
Turn ignition switch on.
Chec ...
Other materials:
Evaporative emission system
EVAPORATIVE EMISSION SYSTEM : System Description
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*
EVAP canister
purge flow control
EVAP canister purge volume
control ...
P0643 Sensor power supply
Description
ECM supplies a voltage of 5.0 V to some of the sensors systematically divided
into 2 groups, respectively.
Accordingly, when a short circuit develops in a sensor power source, a
malfunction may occur simultaneously
in the sensors belonging to the same group as the shorted-circui ...
Precaution
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-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injur ...