HAC-3
C
D
E
F
G
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K
L
MA
B
HAC
N
O
P PTC HEATER (300 WATT) .....................................
142
PTC HEATER (300 WATT) : PTC Heater System
Description ............................................................
142
PTC HEATER (300 WATT) : PTC Heater Compo-
nent Description ....................................................
143
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 .............................................................
256
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) - .....................................
294
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
SRC-12
< FUNCTION DIAGNOSIS >
ON BOARD DIAGNOSTIC (OBD) SYSTEM
SRS Air bag warning lamp examples
DIAGNOSTIC PROCEDURE 2
1. Connect CONSULT-III.
2. Diagnostic code is displayed on "SELF-DIAG [CURRENT]".
If no malfunction is detected on "SELF-DIAG [CURRENT]", but malfunction is detected in "SRS Operation
Check" using the "AIR BAG" warning lamp, the following cases may exist:
"SELF-DIAG [PAST]" memory might not be erased.
The SRS system malfunctions intermittently.
Perform DIAGNOSTIC PROCEDURE 4. Refer to SRC-13, "
Self-Diagnosis Function (Without CONSULT-
III)".
“AIR BAG” warning lamp (User mode) SRS condition Reference item
No malfunction is detected.
No further action is necessary.—
The system is malfunctioning and
needs to be repaired as indicated.Proceed to DIAGNOSTIC PROCE-
DURE 2 that follows (with CON-
SULT-III) or SRC-13, "
Trouble
Diagnosis without CONSULT-III"
(without CONSULT-III).
Air bag is deployed.
Seat belt pre-tensioner is deployed.Proceed to COLLISION DIAGNO-
SIS SR-23, "
For Frontal Collision" or
SR-24, "
For Side and Rollover Colli-
sion".
Air bag diagnosis sensor unit is mal-
functioning.
Air bag power supply circuit is mal-
functioning.
SRS air bag warning lamp circuit is
malfunctioning.Refer to SRC-82, "
Air Bag Warning
Lamp Does Not Turn Off".
Air bag diagnosis sensor unit is mal-
functioning.
Air bag warning lamp circuit is mal-
functioning.Refer to SRC-82, "
Air Bag Warning
Lamp Does Not Turn On".
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E