2007 NISSAN TIIDA light

SELF-DIAGNOSIS FUNCTION
HAC-101
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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Press (DEF) switch one time. Temperature detected by ambient
sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual tempera-
ture, check sensor circuit first, then inspect sensor.
OK or NG
OK >> GO TO 11.
NG >> Go to Ambient Sensor Circuit. Refer to HAC-130, "
Ambi-
ent Sensor Diagnosis Procedure".
11 .CHECK IN-VEHICLE SENSOR
Press (DEF) switch second time. Temperature detected by in-
vehicle sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual tempera-
ture, check sensor circuit first, then inspect sensor.
OK or NG
OK >> GO TO 12.
NG >> Go to In-vehicle Sensor Circuit. Refer to HAC-133, "
In-
Vehicle Sensor Diagnosis Procedure".
12.CHECK INTAKE SENSOR
Press (DEF) switch third time. Temperature detected by intake
sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual tempera-
ture, check sensor circuit first, then inspect sensor.
OK or NG
OK >> 1. Turn ignition switch OFF or AUTO switch ON.
2. INSPECTION END
NG >> Go to Intake Sensor Circuit. Refer to HAC-139, "
Intake
Sensor Diagnosis Procedure".
13.CHECK MALFUNCTIONING SENSOR
Refer to the following chart for malfunctioning code No.
(If two or more sensors malfunction, corresponding code No. blink respectively twice.)
*1: Perform self-diagnosis STEP-2 under sunshine.
When performing indoors, aim a light (more than 60W) at sunload sensor, otherwise code No.25 will indicate
despite that sunload sensor is functioning properly.
*2: HAC-130, "
Ambient Sensor Diagnosis Procedure".
*3: HAC-133, "
In-Vehicle Sensor Diagnosis Procedure".
*4: HAC-139, "
Intake Sensor Diagnosis Procedure".
*5: HAC-136, "
Sunload Sensor Diagnosis Procedure".
SJIA0744E
SJIA0746E
SJIA0748E
Code No. Malfunctioning sensor (Including circuits) Reference page
21 /
AUTO 21Ambient sensor *2
22 /
AUTO 22In-vehicle sensor *3
24 /
AUTO 24Intake sensor *4
25 /
AUTO 25 Sunload sensor *1*5
26 /
AUTO 26Intake door motor PBR *6

INTAKE DOOR MOTOR
HAC-115
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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The intake door motor is attached to the A/C unit assembly. It rotates
so that air is drawn from inlets set by the front air control Motor rota-
tion is conveyed to a lever which activates the intake door.
Intake Door Motor Component Function CheckINFOID:0000000001569474
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - INTAKE DOOR
1. Press REC ( ) switch one time. The recirculation indicator should illuminate.
2. Press FRE ( ) switch one time. The fresh indicator should illuminate.
3. Listen for intake door position change (you should hear blower sound change slightly).
Can a symptom be duplicated?
YES >> GO TO 2.
NO >> Perform a complete operational check. Refer to HAC-87, "
Operational Check".
2.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 3.
3.PERFORM SELF-DIAGNOSIS.
Perform the self-diagnosis function. Refer to HAC-98, "
Front Air Control Self-Diagnosis".
Are any self-diagnosis codes present?
YES >> Repair as necessary.
NO >> GO TO 4.
4. CHECK AMBIENT SENSOR CIRCUIT
Perform diagnostic procedure for the ambient sensor circuit. Refer to HAC-130, "
Ambient Sensor Diagnosis
Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair as necessary.
5. CHECK IN-VEHICLE SENSOR CIRCUIT
Perform diagnostic procedure for the in-vehicle sensor circuit. Refer to HAC-133, "
In-Vehicle Sensor Diagno-
sis Procedure".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair as necessary.
6. CHECK SUNLOAD SENSOR CIRCUIT
Perform diagnostic procedure for the sunload sensor circuit. Refer to HAC-136, "
Sunload Sensor Diagnosis
Procedure".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair as necessary.
7. CHECK INTAKE SENSOR CIRCUIT
SJIA0814E

HAC-136
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
SUNLOAD SENSOR
SUNLOAD SENSOR
System DescriptionINFOID:0000000001547443
COMPONENT DESCRIPTION
Sunload Sensor
The sunload sensor (1) is located on the instrument upper mask. It
detects sunload entering through windshield by means of a photo
diode. The sensor converts the sunload into a current value which is
then input into the front air control.
SUNLOAD INPUT PROCESS
The front air control also includes a processing circuit which averages the variations in detected sunload over
a period of time. This prevents drastic swings in the ATC system operation due to small or quick variations in
detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the sunload sensor will vary whenever the trees obstruct the sunlight. The processing circuit aver-
ages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the ATC system operation. On the other hand, shortly
after entering a long tunnel, the system will recognize the change in sunload, and the system will react accord-
ingly.
Sunload Sensor Diagnosis ProcedureINFOID:0000000001547442
DIAGNOSTIC PROCEDURE FOR SUNLOAD SENSOR
SYMPTOM: Sunload sensor circuit is open or shorted. (25 or AUTO25
is indicated on front air control as a result of performing self-diagno-
sis STEP-2.)
1.CHECK VOLTAGE BETWEEN SUNLOAD SENSOR AND GROUND
1. Turn ignition switch OFF.
2. Disconnect sunload sensor connector M94.
3. Turn ignition switch ON.
4. Check voltage between sunload sensor harness connector M94
terminal 1 and ground.
Is the inspection result normal?
SJIA0819E
AWIIA0312GB
Te r m i n a l s
Voltag e
(Approx.) (+) (−)
Connector Terminal
Ground
Sunload sensor: M94 1 5V
SJIA0821E

HAC-166
< ECU DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
AIR CONDITIONER CONTROL
14 WRear window defogger ON
signalONWhen rear window defogger
switch is depressed.Approx. 0
When rear window defogger
switch is released.Approx. 5
15 GR Blower PWM ONBlower motor speed: 1st step
(manual)
16 GR Illumination signal ONLight switch: ON Approx. 12
Light switch: OFF Approx. 0
17 O Power supply for IGN 1 ON - Battery voltage
19 BR
Air mix door motor drive sig-
nalONImmediately after temperature
adjustment switch operation 20 G
21 LG
22 R
23 GR
Mode door motor drive signal ONImmediately after mode switch
operation 24 W
25 Y
26 V
27 GIntake door motor drive sig-
nalONREC or
FRE switchREC→FRE Approx. 0
FRE→REC Approx. 12
28 LG In-vehicle sensor - - -
29 O Intake sensor - - -
30 SB Ambient sensor - - -
31 P Sunload sensor - - -
32 RRear window defogger feed-
back signalONRear window defogger: ON Approx. 12
Rear window defogger: OFF Approx. 0
33 BR Sensor ground ON - Approx. 0
34 L Gas sensor signal ON - Approx. 0.5 - 5
35 SBIntake door motor feedback
signalONREC position Approx. 5
FRE position Approx. 0
36 VIntake door motor drive sig-
nalONREC or
FRE switchREC→FRE Approx. 12
FRE→REC Approx. 0 Te r m i n a l
No.Wire
colorItemIgnition
switchConditionVoltag e
(V)
ZJIA0863J
HAK0627D
HAK0627D

INSUFFICIENT COOLING
HAC-191
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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P Both High- and Low-pressure Sides are Too Low
Low-pressure Side Sometimes Becomes Negative
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too low
and low-pressure side is too
high.High- and low-pressure sides
become equal soon after com-
pressor operation stops.Compressor pressure operation
is improper.
↓
Damaged inside compressor
packings.Replace compressor.
No temperature difference be-
tween high- and low-pressure
sides.Compressor pressure operation
is improper.
↓
Damaged inside compressor
packings.Replace compressor.
AC356A
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure
sides are too low. There is a big temperature dif-
ference between liquid tank
outlet and inlet. Outlet tem-
perature is extremely low.
 Liquid tank inlet and expan-
sion valve are frosted.Liquid tank inside is slightly
clogged. Replace liquid tank.
 Check oil for contamination.
 Temperature of expansion
valve inlet is extremely low as
compared with areas near liq-
uid tank.
 Expansion valve inlet may be
frosted.
 Temperature difference oc-
curs somewhere in high-pres-
sure side.High-pressure pipe located be-
tween liquid tank and expansion
valve is clogged. Check and repair malfunc-
tioning parts.
 Check oil for contamination.
Expansion valve and liquid tank
are warm or only cool when
touched.Low refrigerant charge.
↓
Leaking fittings or componentsCheck refrigerant for leaks.
Refer to XXXX CHECKING OF
REFRIG LEAKS .
There is a big temperature dif-
ference between expansion
valve inlet and outlet while the
valve itself is frosted.Expansion valve closes a little
compared with the specification.
↓
1. Improper expansion valve
adjustment.
2. Malfunctioning expansion
valve.
3. Outlet and inlet may be
clogged. Remove foreign particles by
using compressed air.
 Replace expansion valve.
 Check oil for contamination.
An area of the low-pressure pipe
is colder than areas near the
evaporator outlet.Low-pressure pipe is clogged or
crushed. Check and repair malfunc-
tioning parts.
 Check oil for contamination.
Air flow volume is not enough or
is too low.Evaporator is frozen. Check intake sensor circuit.
Refer to XXXX INTAKE
SENSOR CIR .
 Replace compressor.
 Repair evaporator fins.
 Replace evaporator.
 Refer to XXXX BLOWER
MOTOR CIR..
AC353A

HAC-202
< BASIC INSPECTION >[AUTO AIR CONDITIONER (W/NAVI)]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
Operational CheckINFOID:0000000001547306
The purpose of the operational check is to confirm that the system operates properly.
CHECKING BLOWER
1. Turn blower control dial to 1st speed. Blower should operate on low speed.
2. Turn blower control dial to 2nd speed, and continue checking blower motor until all speed are checked.
3. Leave blower on max. speed.
If NG, go to trouble diagnosis procedure for HAC-234, "
Front Blower Motor Diagnosis Procedure".
If OK, continue the check.
CHECKING DISCHARGE AIR
1. Turn mode control dial to each position.
2. Confirm that discharge air comes out according to the air distribution table. Refer to HAC-208, "
Discharge
Air Flow".
Intake door position is checked in the next step.
If NG, go to trouble diagnosis procedure for HAC-222, "
Mode Door Motor Diagnosis Procedure".
If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at
FRESH when the DEF is selected.
CHECKING INTAKE DOOR
1. Press intake switch. Recirculation indicator should illuminate.
2. Press intake switch again. Fresh indicator should illuminate.
3. Listen for intake door position change (you should hear blower sound change slightly).
If NG, go to trouble diagnosis procedure for HAC-230, "
Intake Door Motor Diagnosis Procedure".
If OK, continue the check.
CHECKING TEMPERATURE DECREASE
1. Turn temperature control dial counterclockwise until 18°C (64°F).
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for HAC-299, "
Component Function Check".
If OK, continue the check.
CHECKING TEMPERATURE INCREASE
1. Turn temperature control dial clockwise until 32°C (90°F).
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for HAC-307, "
Component Function Check".
If OK, continue the check.
CHECKING A/C SWITCH
1. Turn blower control dial to ON.
2. Press A/C switch.
3. A/C switch indicator will turn ON.
 Confirm that the compressor clutch engages (sound or visual inspection).
If NG, go to trouble diagnosis procedure for HAC-239, "
Magnet Clutch Diagnosis Procedure".
If OK, continue the check.
CHECKING AUTO MODE
1. Set mode control dial and blower control dial to AUTO position.
2. Press A/C switch.Conditions : Engine running at usual operating temperature

HAC-216
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
SELF-DIAGNOSIS FUNCTION
Go to Magnet Clutch Circuit. Refer to HAC-239, "Magnet Clutch Diagnosis Procedure".
9.CHECK MALFUNCTION SENSOR
Refer to the following chart.
*1: Perform self-diagnosis STEP-2 under sunshine.
When performing indoors, aim a light (more than 60W) at sunload
sensor, otherwise LED of rear window defogger switch will illuminate
despite that sunload sensor is functioning properly.
*2: HAC-244, "
Ambient Sensor Diagnosis Procedure".
*3: HAC-247, "
In-Vehicle Sensor Diagnosis Procedure".
*4: HAC-253, "
Intake Sensor Diagnosis Procedure".
*5: HAC-250, "
Sunload Sensor Diagnosis Procedure".
*6: HAC-226, "
Air Mix Door Motor Diagnosis Procedure".
*7: HAC-222, "
Mode Door Motor Diagnosis Procedure".
*8: HAC-230, "
Intake Door Motor Diagnosis Procedure".
In case of a break in the ambient sensor, front air control regards ambient temperature as extreme cold
(approximately –42°C or less) and then start warming.
>> INSPECTION END
10.CHECK MALFUNCTION DOOR MOTOR POSITION SWITCH
Usual: LED for A/C switch and intake switch turn ON.
Unusual: LED for malfunctioning door motor blinks. If unusual condi-
tions are detected in multiple door motor-positions, appropriate
switch LED blink twice respectively.
AWIIA0330ZZ
AWIIA0331GB
SJIA0862E

INTAKE DOOR MOTOR
HAC-229
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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The intake door motor is attached to the A/C unit assembly. It rotates
so that air is drawn from inlets set by the front air control Motor rota-
tion is conveyed to a lever which activates the intake door.
Intake Door Motor Component Function CheckINFOID:0000000001547334
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - REC ( )
1. Turn mode control dial to vent mode( ).
2. Press REC ( ) switch. The REC ( )indicator should illuminate.
3. Press REC ( ) switch again. The REC ( ) indicator should go out.
4. Listen for intake door position change (you should hear blower sound change slightly).
Can a symptom be duplicated?
YES >> GO TO 3.
NO >> GO TO 2.
2.PERFORM COMPLETE OPERATIONAL CHECK
Perform a complete operational check and check for any symptoms. Refer to HAC-202, "
Operational Check".
Can a symptom be duplicated?
YES >> Refer to HAC-201, "How to Perform Trouble Diagnosis For Quick And Accurate Repair".
NO >> System OK.
3.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4.
4.PERFORM SELF-DIAGNOSIS.
Set in Self-diagnostic mode. Refer to HAC-213, "
Front Air Control Self-Diagnosis".
Are any self-diagnosis codes present?
YES >> Repair as necessary.
NO >> GO TO 5.
5. CHECK AMBIENT SENSOR CIRCUIT
Perform diagnostic procedure for the ambient sensor circuit. Refer to HAC-244, "
Ambient Sensor Diagnosis
Procedure".
YES or NO
YES >> GO TO 7
NO >> Repair as necessary.
6. CHECK IN-VEHICLE SENSOR CIRCUIT
Perform diagnostic procedure for the in-vehicle sensor circuit. Refer to XXXX IN-VEHICLE SENS DIAG.
YES or NO
YES >> GO TO 8
NO >> Repair as necessary.
7. CHECK SUNLOAD SENSOR CIRCUIT
SJIA0814E