2007 NISSAN TIIDA heating

HAC-3
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P PTC HEATER (300 WATT) .....................................
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PTC HEATER (300 WATT) : PTC Heater System
Description ............................................................
142
PTC HEATER (300 WATT) : PTC Heater Compo-
nent Description ....................................................
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PTC HEATER (300 WATT) : PTC Heater (300
Watt) Diagnosis Procedure ...................................
144
PTC HEATER (300 WATT) : PTC Heater (300
Watt) Component Inspection .................................
151
PTC HEATER (1500 WATT) ...................................153
PTC HEATER (1500 WATT) : System Description ..153
PTC HEATER (1500 WATT) : Component De-
scription .................................................................
154
PTC HEATER (1500 WATT) : PTC Heater (1500
Watt) Diagnosis Procedure ...................................
155
PTC HEATER (1500 WATT) : PTC Heater (1500
Watt) Component Inspection .................................
160
POWER SUPPLY AND GROUND CIRCUIT
FOR CONTROLLER ........................................
163
Component Description .........................................163
Front Air Control Component Function Check ......163
Front Air Control Power and Ground Diagnosis
Procedure ..............................................................
163
ECU DIAGNOSIS .......................................165
AIR CONDITIONER CONTROL .......................165
Front Air Control Terminals Reference Values .....165
Wiring Diagram - Air Conditioner Control - ............167
PTC HEATER CONTROL SYSTEM ................175
PTC HEATER (300 WATT) .....................................175
PTC HEATER (300 WATT) : Wiring Diagram -
PTC Heater (300 Watt) - .......................................
175
PTC HEATER (1500 WATT) ...................................179
PTC HEATER (1500 WATT) : Wiring Diagram -
PTC Heater (1500 Watt) - .....................................
180
SYMPTOM DIAGNOSIS ............................184
AIR CONDITIONER CONTROL .......................184
Symptom Matrix Chart .........................................184
INSUFFICIENT COOLING ...............................185
Component Function Check ..................................185
Performance Test Diagnoses ................................186
Performance Chart ................................................188
Test Reading .........................................................189
Trouble Diagnoses for Unusual Pressure .............189
INSUFFICIENT HEATING ................................193
Component Function Check ..................................193
NOISE ...............................................................195
Component Function Check ..................................195
SELF-DIAGNOSIS CANNOT BE PER-
FORMED ..........................................................
197
Self-Diagnosis .......................................................197
MEMORY FUNCTION DOES NOT OPERATE .198
Memory Function Check ........................................198
PRECAUTION ............................................199
PRECAUTIONS ...............................................199
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
199
Precaution for Procedures Without Cowl Top Cov-
er ...........................................................................
199
Working with HFC-134a (R-134a) .........................199
Precaution for Service Equipment .........................200
AUTO AIR CONDITIONER (W/NAVI)
BASIC INSPECTION .................................
201
DIAGNOSIS AND REPAIR WORKFLOW ......201
How to Perform Trouble Diagnosis For Quick And
Accurate Repair .....................................................
201
INSPECTION AND ADJUSTMENT ................202
Operational Check .................................................202
FUNCTION DIAGNOSIS ............................204
FUNCTION INFORMATION ............................204
Component Part Location ......................................204
REFRIGERATION SYSTEM ...........................206
Refrigerant Cycle ...................................................206
Refrigerant System Protection ...............................206
AUTOMATIC AIR CONDITIONER SYSTEM ..207
Control System Diagram .......................................207
Control System Description ...................................207
Discharge Air Flow ................................................208
Switches And Their Control Function ....................209
CAN COMMUNICATION SYSTEM .................211
System Description ................................................211
DIAGNOSIS SYSTEM (BCM) .........................212
CONSULT-III Function (BCM) ...............................212
SELF-DIAGNOSIS FUNCTION .......................213
Front Air Control Self-Diagnosis ............................213
Front Air Control Self-Diagnosis Code Chart .........218
COMPONENT DIAGNOSIS .......................219
MODE DOOR MOTOR ....................................219
System Description ................................................219
Mode Door Motor Component Function Check .....220
Mode Door Motor Diagnosis Procedure ................222
AIR MIX DOOR MOTOR .................................224
System Description ................................................224
Air Mix Door Motor Component Function Check ...225
Air Mix Door Motor Diagnosis Procedure ..............226

HAC-4
INTAKE DOOR MOTOR ..................................228
System Description ................................................228
Intake Door Motor Component Function Check ....229
Intake Door Motor Diagnosis Procedure ...............230
BLOWER MOTOR CONTROL SYSTEM ........232
System Description ................................................232
Front Blower Motor Component Function Check ...233
Front Blower Motor Diagnosis Procedure ..............234
Front Blower Motor Component Inspection ...........236
MAGNET CLUTCH ..........................................238
System Description ................................................238
Magnet Clutch Component Function Check ..........238
Magnet Clutch Diagnosis Procedure .....................239
AMBIENT SENSOR .........................................244
Component Description .........................................244
Ambient Sensor Diagnosis Procedure ...................244
Ambient Sensor Component Inspection ................245
IN-VEHICLE SENSOR .....................................247
Component Description .........................................247
In-Vehicle Sensor Diagnosis Procedure ................247
In-Vehicle Sensor Component Inspection .............249
SUNLOAD SENSOR .......................................250
Component Description .........................................250
Sunload Sensor Diagnosis Procedure ...................250
Sunload Sensor Component Inspection ................251
INTAKE SENSOR ............................................253
System Description ................................................253
Intake Sensor Diagnosis Procedure ......................253
Intake Sensor Component Inspection ...................254
PTC HEATER CONTROL SYSTEM ................256
PTC HEATER (300 WATT) ......................................256
PTC HEATER (300 WATT) : PTC Heater System
Description .............................................................
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PTC HEATER (300 WATT) : PTC Heater Compo-
nent Description .....................................................
257
PTC HEATER (300 WATT) : PTC Heater (300
Watt) Diagnosis Procedure ....................................
258
PTC HEATER (300 WATT) : PTC Heater (300
Watt) Component Inspection .................................
265
PTC HEATER (1500 WATT) ....................................267
PTC HEATER (1500 WATT) : System Description ..267
PTC HEATER (1500 WATT) : Component De-
scription .................................................................
268
PTC HEATER (1500 WATT) : PTC Heater (1500
Watt) Diagnosis Procedure ....................................
269
PTC HEATER (1500 WATT) : PTC Heater (1500
Watt) Component Inspection .................................
274
POWER SUPPLY AND GROUND CIRCUIT
FOR CONTROLLER .........................................
277
Component Description ........................................277
A/C Auto Amp. Component Function Check .........277
A/C Auto Amp Power and Ground Diagnosis Pro-
cedure ...................................................................
278
ECU DIAGNOSIS ......................................279
AIR CONDITIONER CONTROL .......................279
Front Air Control Terminals Reference Values .....279
Wiring Diagram - Air Conditioner Control - ...........281
PTC HEATER CONTROL SYSTEM .................289
PTC HEATER (300 WATT) .....................................289
PTC HEATER (300 WATT) : Wiring Diagram -
PTC Heater (300 Watt) - .......................................
289
PTC HEATER (1500 WATT) ...................................293
PTC HEATER (1500 WATT) : Wiring Diagram -
PTC Heater (1500 Watt) - .....................................
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SYMPTOM DIAGNOSIS ...........................298
AIR CONDITIONER CONTROL .......................298
Symptom Matrix Chart .........................................298
INSUFFICIENT COOLING ................................299
Component Function Check .................................299
Performance Test Diagnoses ...............................300
Performance Chart ................................................302
Test Reading .........................................................303
Trouble Diagnoses for Unusual Pressure .............303
INSUFFICIENT HEATING ................................307
Component Function Check .................................307
NOISE ...............................................................309
Component Function Check .................................309
SELF-DIAGNOSIS CANNOT BE PER-
FORMED ...........................................................
311
Self-Diagnosis .......................................................311
MEMORY FUNCTION DOES NOT OPERATE ..312
Memory Function Check .......................................312
PRECAUTION ...........................................313
PRECAUTIONS ................................................313
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
313
Precaution for Procedures Without Cowl Top Cov-
er ...........................................................................
313
Working with HFC-134a (R-134a) .........................313
Precaution for Service Equipment ........................314

HAC-6
< BASIC INSPECTION >[MANUAL AIR CONDITIONER]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
Operational CheckINFOID:0000000001203052
The purpose of the operational check is to confirm that the system operates properly.
CHECKING BLOWER
1. Turn blower control dial clockwise to "1" position. Blower should operate on low speed.
2. Turn blower control dial clockwise to "2" position, and continue checking blower speed until all speeds are
checked.
3. Leave blower on Maximum speed.
If NG, go to trouble diagnosis procedure for xxx BLOWER MOTOR CIR HAC-19, "
Front Blower Motor Diagno-
sis Procedure".
If OK, continue the check.
CHECKING DISCHARGE AIR
1. Turn mode door control dial to each position.
2. Confirm that discharge air comes out according to the air distribution table. Refer to XXXX DISCHARGE
AIR FLOW.
If NG, go to trouble diagnosis procedure for HAC-16, "
Mode Door Diagnostic Procedure".
If OK, continue the check.
CHECKING RECIRCULATION
1. Set intake door lever to REC position.
2. Operate intake door lever to FRE position.
3. Listen for intake door position change (you should hear blower sound change slightly).
If NG, go to trouble diagnosis procedure for XXXX INTAKE DOOR.
If OK, continue the check.
CHECKING TEMPERATURE DECREASE
1. Turn temperature control dial counterclockwise to full cold position.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for XXXX INSUFFICIENT COOLING.
If OK, continue the check.
CHECKING TEMPERATURE INCREASE
1. Turn temperature control dial clockwise to full hot position.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for XXXX INSUFFICIENT HEATING.
If OK, continue the check.
CHECKING A/C SWITCH (IF EQUIPPED)
1. Turn fan control dial to the desired (1 to 4 speed) position.
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 XXXX MAG CLUTCH CIR.
If OK, continue the check.
CHECKING DEFROST A/C SWITCH (IF EQUIPPED)
1. Turn fan control dial to the desired (1 to 4 speed) position.
2. Turn mode dial to ( ) DEF.
3. Confirm that the compressor clutch engages (sound or visual inspection). Conditions : Engine running at normal operating temperature

HAC-72
< SYMPTOM DIAGNOSIS >[MANUAL AIR CONDITIONER]
AIR CONDITIONER CONTROL
SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Symptom Matrix ChartINFOID:0000000001203074
SYMPTOM TABLE
Symptom Reference Page
Air outlet does not change. Go to Trouble Diagnosis Procedure for Mode Door.HAC-16
Discharge air temperature does not
change.Go to Trouble Diagnosis Procedure for Air Mix Door.HAC-17
Intake door does not change. Go to Trouble Diagnosis Procedure for Intake Door.HAC-18
Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor.HAC-19
Magnet clutch does not engage in A/C, de-
frost/foot, or defrost mode.Go to Trouble Diagnosis Procedure for Magnet Clutch.HAC-24
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.HAC-73
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.HAC-81
Noise Go to Trouble Diagnosis Procedure for Noise.HAC-83

INSUFFICIENT HEATING
HAC-81
< SYMPTOM DIAGNOSIS >[MANUAL AIR CONDITIONER]
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INSUFFICIENT HEATING
Component Function CheckINFOID:0000000001547078
SYMPTOM: Insufficient heating
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1. Turn temperature control dial clockwise to maximum heat position.
2. Check for hot air at discharge air outlets.
Can the symptom be duplicated?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to HAC-6, "
Operational Check".
Does another symptom exist?
YES >> Refer to HAC-5, "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.CHECK COOLANT SYSTEM
1. Check engine coolant level. Refer to XX-XX, "*****" .
2. Check hoses for leaks or kinks.
3. Check Radiator cap. Refer to XX-XX, "*****" .
OK or NG
OK >> GO TO 5.
NG >> Repair/replace as necessary.
5.CHECK AIR MIX DOOR CABLE
Check air mix door cable operation. Refer to XXXX AIR MIX DOOR CABLE ADJUSTMENT .
OK or NG
YES >> GO TO 6.
NO >> Adjust or replace air mix door cable. Refer to XXXX AIR MIX DOOR CABLE ADJUST. .
6.CHECK AIR DUCTS
Check ducts for air leaks.
OK or NG
OK >> GO TO 7.
NG >> Repair air leaks.
7.CHECK HEATER HOSE TEMPERATURES
1. Start engine and warm it up to normal operating temperature.
2. Touch both the inlet and outlet heater hoses.
Is the inlet hose hot and the outlet hose warm?
YES >> GO TO 8.
NO >> Both hoses warm: GO TO 9.
8.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check engine control temperature sensor. Refer to XX-XX, "*****" .
OK or NG
OK >> System OK.

HAC-82
< SYMPTOM DIAGNOSIS >[MANUAL AIR CONDITIONER]
INSUFFICIENT HEATING
NG >> Repair or replace as necessary. Retest.
9.CHECK HEATER HOSES
Check heater hoses for proper installation.
OK or NG
OK >> GO TO 10.
NG >> Repair /replace as necessary. Retest GO TO 7.
10.BACK FLUSH HEATER CORE
1. Back flush heater core.
2. Drain the water from the system.
3. Refill system with new engine coolant. Refer to XX-XX, "*****" .
4. Start engine and warm it up to normal operating temperature.
5. Touch both the inlet and outlet heater hoses.
Is the inlet hose hot and the outlet hose warm? YES or NO
YES >> System OK.
NO >> Replace heater core and refill engine coolant. Refer to XXXX .

HAC-104
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
SELF-DIAGNOSIS FUNCTION
4. Press temperature control switch as desired. Temperature will change at a rate of 1°C each time a switch
is pressed.
When battery cable is disconnected or battery voltage is 9.0V or less, trimmer operation is cancelled. Set
temperature returns to the initial condition, i.e. 0°C.
A/C System Self-Diagnosis Code ChartINFOID:0000000001547403
SYMPTOM TABLE
AWIIA0288GB
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System.HAC-163
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.HAC-109
Mode door motor does not operate normally.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.HAC-112
Air mix door motor does not operate normally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.HAC-116
Intake door motor does not operate normally.
Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor.HAC-120
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.HAC-125
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.HAC-185
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.HAC-193

HAC-184
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
AIR CONDITIONER CONTROL
SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Symptom Matrix ChartINFOID:0000000001547451
SYMPTOM TABLE
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System.HAC-163
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.HAC-109
Mode door motor does not operate normally.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.HAC-112
Air mix door motor does not operate normally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.HAC-116
Intake door motor does not operate normally.
Blower motor operation is malfunctioning.
Go to Trouble Diagnosis Procedure for Blower Motor.HAC-120
Blower motor operation is malfunctioning un-
der out of starting fan speed control.
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.HAC-125
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.HAC-185
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.HAC-193
Noise Go to Trouble Diagnosis Procedure for Noise.HAC-195
Self-diagnosis cannot be performed. Go to Trouble Diagnosis Procedure for Self-diagnosis.HAC-197
Memory function does not operate. Go to Trouble Diagnosis Procedure for Memory Function.HAC-198