Nissan Sentra Service Manual: B terminal circuit
Description
Terminal “B” is constantly supplied with battery power.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to STR-10, "Wiring Diagram" (with Intelligent Key system) or STR-15, "Wiring Diagram" (without Intelligent Key system).
CAUTION:
Perform diagnosis under the condition that the engine cannot start by the following procedure.
- Remove fuel pump fuse.
- Crank or start the engine (where possible) until the fuel pressure is released.
1.CHECK “B” TERMINAL CIRCUIT
- Turn ignition switch OFF
- Check that starter motor B” terminal connection is clean and tight.
- Check voltage between starter motor connector F27 and ground.
Is the inspection result normal? YES >> GO TO 2.
NO >> Check harness between battery and starter motor for open circuit.
2.CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST)
- Shift selector lever to P (Park) or N (Neutral) position (CVT Models) or the clutch pedal is depressed (M/T Models).
- Check voltage between battery positive terminal and starter motor B terminal.
Is the inspection result normal? YES >> GO TO 3.
NO >> Check harness between the battery and starter motor for continuity.
3.CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
- Shift selector lever to P (Pack) or N (Neutral) position (CVT Models) or the clutch pedal is depressed (M/T Models).
- Check voltage between starter motor case and battery negative terminal.
Is the inspection result normal? YES >> “B” terminal circuit is OK. Further inspection is necessary. Refer to STR-20, "Work Flow (With GR8-1200 NI)" or STR-24, "Work Flow (Without GR8-1200 NI)".
NO >> Check the starter motor case to engine mounting for high resistance.
S connector circuit
Description
The starter motor magnetic switch is supplied with power when the ignition
switch is turned to the START position
while the selector lever is in the P (Park) or N (Neutral) position (C ...
Other materials:
P0453 EVAP Control system pressure sensor
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0453
EVAP SYS PRES SEN
(Evaporative emission system
pressure sensor/switch high)
An excessively high voltage from the
sensor is ...
Warning signals
To help prevent the vehicle from moving unexpectedly
by erroneous operation of the Intelligent
Key or to help prevent the vehicle from being
stolen, a chime or buzzer sounds from inside and
outside the vehicle and a warning light comes on
in the instrument panel.
When a chime or beep sounds ...
Service Notice and Precautions for EPS System
Check the following item when performing the trouble
diagnosis.
Check any possible causes by interviewing the symptom and
it′s condition from the customer if any malfunction,
such as EPS warning lamp is turned ON, occurs.
Check if air pressure and size of tires are proper, t ...
