Nissan Sentra Service Manual: Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
DETAILED FLOW
1.LISTEN TO CUSTOMER COMPLAINT
Listen to customer complaint. Get detailed information about the conditions and environment when the symptom occurs.
>> GO TO 2.
2.VERIFY THE SYMPTOM WITH OPERATIONAL CHECK
Verify the symptom with operational check. Refer to HAC-157, "Work Procedure".
>> GO TO 3.
3.GO TO APPROPRIATE TROUBLE DIAGNOSIS
Go to appropriate trouble diagnosis. Refer to HAC-181, "Symptom Table".
>> GO TO 4.
4.REPAIR OR REPLACE
Repair or replace the specific parts.
>> GO TO 5.
5.FINAL CHECK
Final check.
Is the inspection result normal? YES >> Inspection End.
NO >> GO TO 3.
OPERATION INSPECTION
Work Procedure
DESCRIPTION
The purpose of the operational check is to check that the individual system operates normally.
Check condition : Engine running at normal operating temperature.
Check condition : Blower control dial in OFF position.
Check condition : REC off (LED extinguished).
Check condition : VENT selected (LED illuminated).
Check condition : DEF off (LED extinguished).
OPERATION INSPECTION
1.CHECK BLOWER
- Rotate the blower control dial clockwise one detent. Blower should operate on low speed.
- Rotate the blower control dial one detent at a time, and continue checking blower speed until all speeds are checked.
- Leave blower on maximum speed.
Is the test result normal? YES >> GO TO 2.
NO >> Refer to HAC-174, "Diagnosis Procedure".
2.CHECK A/C SWITCH LED
- Press A/C switch.
- A/C switch indicator should turn ON.
Is the test result normal? YES >> GO TO 3.
NO >> Refer to HAC-168, "Diagnosis Procedure".
3.CHECK A/C SWITCH
Confirm that the compressor clutch engages (sound or visual inspection).
Is the test result normal? YES >> GO TO 4.
NO >> Refer to HAC-178, "Diagnosis Procedure".
4.CHECK FRONT AIR CONTROL MODE LEDS
- Press D/F (
), FOOT (
), B/L
, and VENT
, MAX A/C, and DEF (
). - Each button indicator should illuminate.
Is the test result normal? YES >> GO TO 5.
NO >> Refer to HAC-160, "A/C SWITCH ASSEMBLY : Diagnosis Procedure".
5.CHECK DISCHARGE AIR
- Press D/F (
), FOOT (
), B/L
, and VENT
and DEF (
). - Confirm that discharge air comes out according to the air distribution table. Refer to HAC-123, "Door Control".
Is the test result normal? YES >> GO TO 6.
NO >> Refer to HAC-181, "Symptom Table".
6.CHECK REC LED
- Press DEF (
) and make sure
LED is off. - Make sure VENT (
) or B/L (
) is selected. - Press REC (
) switch one
time. REC indicator should illuminate. - Press REC (
) switch one
more time. REC indicator should go off.
Is the test result normal? YES >> GO TO 7.
NO >> Refer to HAC-160, "A/C SWITCH ASSEMBLY : Diagnosis Procedure".
7.CHECK INTAKE DOOR OPERATION
- Press REC (
) switch one
time. REC indicator should illuminate. - Listen to the sound of the air coming out of the vent.
- Press REC (
) switch one
more time. REC indicator should go off. - There should be an audible change to the sound of the air flowing out of the vent.
Is the test result normal? YES >> GO TO 8.
NO >> Refer to HAC-165, "Diagnosis Procedure".
8.CHECK TEMPERATURE DECREASE
- Press A/C switch.
- Rotate temperature control dial counterclockwise until maximum cold.
- Check for cold air at selected discharge air outlets.
Is the test result normal? YES >> GO TO 9.
NO >> Refer to HAC-182, "Component Function Check".
9.CHECK TEMPERATURE INCREASE
- Rotate temperature control dial clockwise until maximum hot.
- Check for hot air at appropriate discharge air outlets.
Is the test result normal? YES >> Inspection End.
NO >> Refer to HAC-184, "Component Function Check".
Wiring diagram
Manual air conditioning system
Wiring Diagram
Manual heater system
Wiring Diagram
...
DTC/circuit diagnosis
POWER SUPPLY AND GROUND CIRCUIT
A/C AUTO AMP.
A/C AUTO AMP. : Diagnosis Procedure
Regarding Wiring Diagram information, refer to HAC-145, "Wiring Diagram" or
HAC-152, "Wiring Diagr ...
Other materials:
Fog light switch (if so equipped)
To turn the fog lights on, turn the headlight switch
to the position, then turn the
fog light
switch to the position.
If the headlight switch is in the AUTO position
and the fog light switch is moved to the ON
position, both the fog lights and the headlights
(including all other ...
How to read the displayed lines
Guiding lines which indicate the vehicle width
and distances to objects with reference to the
vehicle body line A are displayed on the monitor.
Distance guide lines:
Indicate distances from the vehicle body.
Red line 1 : approx. 1.5 ft (0.5 m)
Yellow line 2 : approx. 3 ft (1 m)
Green ...
When reading the manual
This manual includes information for all features
and equipment available on this model. Features
and equipment in your vehicle may vary depending
on model, trim level, options selected, order,
date of production, region or availability. Therefore,
you may find information about features or
eq ...
