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:
Air conditioner operation (if so equipped)
Start the engine, turn the fan control dial to the
desired position, and press the
button to
activate the air conditioner. When the air conditioner
is on, cooling and dehumidifying functions
are added to the heater operation.
The air conditioner cooling function operates
only whe ...
L terminal circuit (short)
Description
The terminal “l” circuit controls the charge warning lamp. The charge warning
lamp turns on when the ignition
switch is set to on or start. When the generator is providing sufficient voltage
with the engine running,
the charge warning lamp turns off. If the charge warni ...
Fuel injector
Component Function Check
1.INSPECTION START
Turn ignition switch to START.
Is any cylinder ignited?
YES >> GO TO 2.
NO >> Proceed to EC-450, "Diagnosis Procedure".
2.CHECK FUEL INJECTOR FUNCTION
With CONSULT
Start engine.
Perform “POWER BALANCE” in Р...
