NISSAN ALMERA N16 2003 Electronic Repair Manual

Operational Check=NJHA0130The purpose of the operational check is to confirm that the system
operates properly.
CONDITIONS:NJHA0130S01Engine running and at usual operating temperature.
NHA374
PROCEDURE:NJHA0130S021. Check BlowerNJHA0130S02011. Turn fan switch to 1-speed.
Blower should operate on 1-speed.
2. Then turn fan switch to 2-speed, and continue checking blower
speed until all speeds are checked.
3. Leave blower on 4-speed.
If NG, go to trouble diagnosis procedure for blower motor (HA-45).
If OK, continue with next check.
NHA375
2. Check Discharge AirNJHA0130S02021. Turn mode control knob to each position.
RHA280I
2. Confirm that discharge air comes out according to the air dis-
tribution table at left.
Refer to “Discharge Air Flow”, HA-19.
If NG, go to trouble diagnosis procedure for mode door motor
(HA-41).
If OK, continue with next check.
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TROUBLE DIAGNOSESMANUAL
Operational Check
HA-35

NHA377
3. Check RecirculationNJHA0130S02031. Press the Recirculation (REC) switch. Recirculation indicator
should illuminate.
2. Listen for intake door position change.
If NG, go to trouble diagnosis procedure for intake door (HA-37).
If OK, continue with next check.
NHA378
4. Check Temperature DecreaseNJHA0130S02041. Turn the temperature control knob to full cold.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for insufficient cooling
(HA-66).
If OK, continue with next check.
NHA379
5. Check Temperature IncreaseNJHA0130S02051. Turn the temperature control knob to full hot.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for insufficient heating
(HA-75).
NHA380
6. Check Air Conditioner SwitchNJHA0130S0206Turn the fan control switch to the desired (1 to 4 speed) position
and push the A/C switch to turn ON the air conditioner.
The indicator lamp should come on when air conditioner is ON.
If NG, go to trouble diagnosis procedure for magnet clutch (HA-52).
TROUBLE DIAGNOSESMANUAL
Operational Check (Cont’d)
HA-36

Intake Door
TROUBLE DIAGNOSIS PROCEDURE FOR INTAKE DOOR=NJHA0133SYMPTOM:
Intake door does not change.
INSPECTION FLOW
NHA381
*1: HA-35 *2: HA-34 *3: HA-38
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TROUBLE DIAGNOSESMANUAL
Intake Door
HA-37

RHA623H
COMPONENT DESCRIPTIONNJHA0209Intake Door MotorNJHA0209S01The intake door motor is attached to the intake unit. It rotates so
that air is drawn from inlets set by the heater control panel. Motor
rotation is conveyed to a lever which activates the intake door.
DIAGNOSTIC PROCEDURE FOR INTAKE DOOR
MOTOR CIRCUIT
NJHA0210
1 CHECK POWER SUPPLY FOR HEATER CONTROL PANEL
Do approx. 12 volts exist between heater control panel harness terminal No. 1 and body ground?
RHA251I
YesorNo
Ye s G O T O 2 .
No Check 10A (No. 15) fuse at fuse block. Refer to EL-14, “Wiring Diagram — POWER —”.
2 CHECK RECIRCULATION (REC) SWITCH
Refer to HA-40.
OK or NG
OK GO TO 3.
NG Replace recirculation (REC) switch.
TROUBLE DIAGNOSESMANUAL
Intake Door (Cont’d)
HA-38

3 CHECK GROUND CIRCUIT FOR RECIRCULATION (REC) SWITCH
Check circuit continuity between heater control panel harness terminal No. 5 and body ground.
RHA252I
Continuity should exist.
If OK, check harness for short.
OK or NG
OK GO TO 4.
Ng Repair harness or connector.
4 CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR
Do approx. 12 volts exist between intake door motor harness terminal No. 1,2 and body ground?
NHA497
YesorNo
Yes Replace intake door motor.
No GO TO 5.
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TROUBLE DIAGNOSESMANUAL
Intake Door (Cont’d)
HA-39

5 CHECK CIRCUIT CONTINUITY BETWEEN HEATER CONTROL PANEL AND INTAKE DOOR MOTOR
Check circuit continuity between heater control panel harness terminal No. 10 (11) and intake door motor harness terminal
No. 2 (1)
RHA253I
Continuity should exist.
If OK, check harness for short.
OK or NG
OK Replace heater control panel.
NG Repair harness or connector.
RHA254I
ELECTRICAL COMPONENT INSPECTIONNJHA0216Recirculation (REC) SwitchNJHA0216S01Check continuity between terminals.
Terminals REC switch Continuity
1-5ON Yes
OFF No
NHA500
Intake Door MotorNJHA0216S02Supply 12V direct current to intake door motor terminal No. 1 and
2.
12V direct current supply terminals
Intake door position
+−
12FRE
21REC
TROUBLE DIAGNOSESMANUAL
Intake Door (Cont’d)
HA-40

Mode Door
TROUBLE DIAGNOSIS PROCEDURE FOR MODE DOOR=NJHA0137SYMPTOM:
Air outlet does not change.
INSPECTION FLOW
RHA255I
*1: HA-19
*2: HA-35*3: HA-42 *4: HA-34
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TROUBLE DIAGNOSESMANUAL
Mode Door
HA-41

RHA695H
RHA745H
CONTROL LINKAGE ADJUSTMENTNJHA0139Mode DoorNJHA0139S011. Turn the mode control knob to VENT position.
2. Move side link by hand and hold mode door in VENT position.
3. Pull on the cable cover in the direction of the arrow, then clamp
it.
After positioning control cable, check that it operates
properly.
TROUBLE DIAGNOSESMANUAL
Mode Door (Cont’d)
HA-42

Air Mix Door
TROUBLE DIAGNOSIS PROCEDURE FOR AIR MIX DOOR=NJHA0140SYMPTOM:
Air mix door does not change.
INSPECTION FLOW
RHA284I
*1: HA-44
*2: HA-35*3: HA-35 *4: HA-34
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TROUBLE DIAGNOSESMANUAL
Air Mix Door
HA-43

RHA697H
RHA746H
CONTROL LINKAGE ADJUSTMENTNJHA0143Air Mix DoorNJHA0143S011. Turn the temperature control knob to full hot position.
2. Move air mix door lever by hand and hold it at the full hot
position.
3. Pull on the cable cover in the direction of the arrow, then clamp
it.
After positioning control cable, check that it operates
properly.
TROUBLE DIAGNOSESMANUAL
Air Mix Door (Cont’d)
HA-44