sensor NISSAN TIIDA 2007 Service Repair Manual

HAC-90
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
FUNCTION INFORMATION
1. Variable blower control M90, M91 2. Intake door motor M89 3. In-vehicle sensor M93
4. Air mix door motor M88 5. Intake sensor M92 6. Mode door motor M87
7. Sunload sensor M94 8. Front blower motor M62 9. Front air control M50, M51
AWIIA0282ZZ

HAC-92
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
AUTOMATIC AIR CONDITIONER SYSTEM
AUTOMATIC AIR CONDITIONER SYSTEM
Control System DiagramINFOID:0000000001547392
CONTROL SYSTEM
The control system consists of input sensors, switches, the front air control (microcomputer) and outputs.
The relationship of these components is shown in the figure below:
Control System DescriptionINFOID:0000000001547393
CONTROL OPERATION
AWIIA0480ZZ
AWIIA0279GB

HAC-94
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
AUTOMATIC AIR CONDITIONER SYSTEM
MAGNET CLUTCH CONTROL
When A/C switch, AUTO switch or DEF switch is pressed, front air control inputs compressor ON signal to
BCM.
BCM sends compressor ON signal to ECM, via CAN communication line.
ECM judges whether compressor can be turned ON, based on each sensor status (refrigerant-pressure sen-
sor signal, throttle angle, etc.). If it judges compressor can be turned ON, it sends compressor ON signal to
IPDM E/R, via CAN communication line.
Upon receipt of compressor ON signal from ECM, IPDM E/R turns air conditioner relay ON to operate com-
pressor.
Discharge Air FlowINFOID:0000000001547394
AWIIA0277GB
Mode door positionAir outlet/distribution
Vent Foot Defroster
100% — —
56% 44% —
16% 64% 20%
16% 53% 31%
17% — 83%
Airflow always present at driver and passenger side demisters
WJIA2190E

HAC-98
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
SELF-DIAGNOSIS FUNCTION
SELF-DIAGNOSIS FUNCTION
Front Air Control Self-DiagnosisINFOID:0000000001547401
DESCRIPTION
The self-diagnostic system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to appli-
cable sections (items) for details. Shifting from usual control to the self-diagnostic system is accomplished by
starting the engine (turning the ignition switch ON) and pressing OFF switch for at least 5 seconds. The OFF
switch must be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This system
will be cancelled by either pressing AUTO switch or turning the ignition switch OFF. Shifting from one step to
another is accomplished by means of pushing front air control switches, as required.
Additionally shifting from STEP-5 to AUXILIARY MECHANISM is accomplished by means of pushing blower
motor switch (UP: ).
FUNCTION CONFIRMATION PROCEDURE
1.SET IN SELF-DIAGNOSTIC MODE
1. Turn ignition switch ON.
2. Set in self-diagnostic mode as follows. Within 10 seconds after starting engine (ignition switch is turned
ON.), press OFF switch for at least 5 seconds.
AWIIA0284GB

SELF-DIAGNOSIS FUNCTION
HAC-99
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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CAUTION:
If battery voltage drops below 12V during diagnosis STEP-3, door motor speed becomes slower and
as a result, the system may generate an error even when operation is usual. To avoid this, start engine
before performing this diagnosis.
>> GO TO 2.
2.STEP-1: LED AND DISPLAY ARE CHECKED
Check display screen (1) and LED illumination (2).
OK or NG
OK >> GO TO 3.
NG >> Malfunction OFF switch or AUTO switch. Refer to HAC-
311, "Self-Diagnosis".
3.CHECK TO ADVANCE SELF-DIAGNOSIS STEP-2
Press temperature control switch (UP: ).
Advance to self
-diagnosis STEP-2?
YES >> GO TO 4.
NO >> Replace front air control (temperature control switch is malfunctioning). Refer to XX.
4.CHECK TO RETURN SELF-DIAGNOSIS STEP-1
Press temperature control switch (DOWN: ).
Return to self
-diagnosis STEP-1?
YES >> GO TO 5.
NO >> Replace front air control (temperature control switch is malfunctioning). Refer to XX.
5.STEP-2: SENSOR CIRCUITS ARE CHECKED FOR OPEN OR SHORT CIRCUIT
Press temperature control switch (UP: ).
Does code No. 20 appear on the display?
YES >> GO TO 6.
NO >> GO TO 13.
6.STEP-3: AIR MIX DOOR AND MODE DOOR POSITIONS ARE CHECKED
Press temperature control switch (UP: ).
Does code No. 30 appear on the display?
YES >> GO TO 7.
NO >> GO TO 14.
AWIIA0285ZZ
SJIA0737E
SJIA0738E

HAC-100
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
SELF-DIAGNOSIS FUNCTION
7.STEP-4: OPERATION OF EACH DOOR MOTOR IS CHECKED
1. Press temperature control switch (UP: ).
2. Press (DEF) switch. Code No. of each door motor test is
indicated on the display.
>> GO TO 8.
8.CHECK ACTUATORS
Refer to HAC-94, "
Discharge Air Flow" and confirm discharge air flow, air temperature, blower motor voltage
and compressor operation.
Checks must be made visually, by listening to any noise, or by touching air outlets with your hand, etc. for
improper operation.
OK or NG
OK >> GO TO 9.
NG >>  Air outlet does not change.
Go to Mode Door Motor Circuit. Refer to HAC-109, "
Mode Door Motor Diagnosis Procedure".
 Intake door does not change.
Go to Intake Door Motor Circuit. Refer to HAC-116, "
Intake Door Motor Diagnosis Procedure".
 Blower motor operation is malfunctioning.
Go to Blower Motor Circuit. Refer to HAC-120, "
Front Blower Motor Diagnosis Procedure".
 Magnet clutch does not engage.
Go to Magnet Clutch Circuit. Refer to HAC-125, "
Magnet Clutch Diagnosis Procedure".
 Discharge air temperature does not change.
Go to Air Mix Door Motor Circuit. Refer to HAC-112, "
Air Mix Door Motor Diagnosis Procedure".
9.STEP-5: TEMPERATURE OF EACH SENSOR IS CHECKED
1. Press temperature control switch (UP: ).
2. Code No. 5 appears on the display.
>> GO TO 10.
10.CHECK AMBIENT SENSOR
RHA495A
Code No. 414243444546
Mode door position VENT B/L 1 B/L 2 FOOT D/F DEF
Intake door position REC REC 20% FRE 80% FRE FRE FRE
Air mix door position FULL COLD FULL COLD 50% 50% FULL HOT FULL HOT
Blower motor voltage 5V 10.5V 8.5V 8.5V 8.5V Battery voltage
Compressor ON ON ON OFF OFF ON
Blower motor ON signal 12V 12V 12V 1V 1V 12V

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

HAC-106
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
MODE DOOR MOTOR
COMPONENT DIAGNOSIS
MODE DOOR MOTOR
System DescriptionINFOID:0000000001547404
SYSTEM DESCRIPTION
Component Parts
Mode door control system components are:
 Front air control
 Mode door motor
 In-vehicle sensor
 Ambient sensor
 Sunload sensor
System Operation
The front air control receives data from each of the sensors. When a drive signal is input from front air control
to door motor, a step motor built into the door motor rotates according to the drive signal, and then stops at the
position of target door.
Mode door changes to manual select mode by pressing MODE/DEF switch of the controller. That allows mode
door to be fixed.
Pressing AUTO switch allows automatic control by front air control, and mode door is fixed in the FOOT posi-
tion by pressing OFF switch.
During automatic operation of mode door, mode door position (VENT, B/L, FOOT) is selected according to the
temperature of discharge air calculated by front air control based on the target opening angle of air mix door
and the amount of sunload. And only when ambient temperature is extremely low with the mode door in the
FOOT position, D/F is selected and prevents windshield fogging.
AWIIA0290GB

HAC-108
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
MODE DOOR MOTOR
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
Perform diagnostic procedure for the intake sensor circuit. Refer to HAC-139, "
Intake Sensor Diagnosis Pro-
cedure".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair as necessary.
8. CHECK AIR MIX DOOR MOTOR PBR CIRCUIT
Perform diagnostic procedure for the air mix door motor PBR circuit. Refer to HAC-112, "
Air Mix Door Motor
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair as necessary.
9. RECHECK FOR SYMPTOMS
Perform a complete operational check and check for any symptoms. Refer to HAC-87, "
Operational Check".
Does another symptom exist?
YES >> Repair as necessary.
NO >> Replace front air control. Refer to XX.

HAC-110
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
AIR MIX DOOR MOTOR
AIR MIX DOOR MOTOR
System DescriptionINFOID:0000000001547407
SYSTEM DESCRIPTION
Component Parts
Air mix door control system components are: Front air control
 Air mix door motor
 In-vehicle sensor
 Intake sensor
 Ambient sensor
 Sunload sensor
System Operation
The front air control receives data from each of the sensors. When setting a target temperature by using tem-
perature button, front air control corrects preset temperature, performs an arithmetical operation based on sig-
nals from sensors and determines opening angle of target air mix door.
Air mix door is constantly controlled so as to keep optimum opening angle of air mix door based on target and
present opening angles of air mix door. Air mix door is fixed in the full cold position when preset temperature is
set to 18°C, and full hot position when set to 32°C.
Drive System of Step Motor Type Door Motor
 Motor is actuated in sequence by energizing four drive coils.
 Rotation direction can be changed by changing pattern of excitation.
AWIIA0292GB
SJIA0970E