HEATER &
AIR CONDITIONER
SECTION
HA
CONTENTS
PRECAUTIONS AND PREPARATION
.......................... 3
Supplemental Restraint System (SRS)
″
AIR
BAG
″
and
″
SEAT BELT PRE-TENSIONER
″
............. 3
Precautions for Working with HFC-134a (R-134a) ... 3
General Refrigerant Precautions ............................... 4
Precautions for Refrigerant Connection .................... 4
Precautions for Servicing Compressor...................... 7
Special Service Tools ................................................ 7
HFC-134a (R-134a) Service Tools and
Equipment.................................................................. 8
Precautions for Service Equipment ......................... 10
DESCRIPTION
............................................................. 12
Refrigeration Cycle .................................................. 12
CSV613 Variable Displacement Compressor.......... 14
Component Layout .................................................. 18
HEATER
DESCRIPTION
............................................................. 19
Control Operation .................................................... 19
Air Flow.................................................................... 19
AUTO
DESCRIPTION
............................................................. 20
Introduction .............................................................. 20
Features................................................................... 20
Control Operation .................................................... 21
Discharge Air Flow................................................... 23
HEATER
TROUBLE DIAGNOSES
............................................. 24
Operational Check ................................................... 24
AUTO
TROUBLE DIAGNOSES
............................................. 26
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ................................................ 26
Symptom Chart........................................................ 28
Checking Resistor.................................................... 30
Preliminary Check.................................................... 30
Performance Test Diagnoses .................................. 33
A/C Performance Chart ........................................... 35
Trouble Diagnoses for Abnormal Pressure ............. 36
Component Location................................................ 39
Wiring Diagram - HEATER -.................................... 40
Circuit Diagram - Air Conditioner............................. 41
Wiring Diagram - A/C - ............................................ 42
Main Power Supply and Ground Circuit Check ...... 51
Diagnostic Procedure 1 ........................................... 52
Diagnostic Procedure 2: Models with relay type 1.. 54
Diagnostic Procedure 2: Models with relay type 2.. 56
Diagnostic Procedure 3: Models with relay type 1.. 57
Diagnostic Procedure 3: Models with relay type 2.. 59
Diagnostic Procedure 4: Models with relay type 1.. 61
Diagnostic Procedure 4: Models with relay type 2.. 63
Diagnostic Procedure 5 ........................................... 65
Diagnostic Procedure 6 ........................................... 66
Diagnostic Procedure 7 ........................................... 68
Diagnostic Procedure 9 ........................................... 69
Diagnostic Procedure 10 ......................................... 70
Diagnostic Procedure 11 ......................................... 74
Diagnostic Procedure 12 ......................................... 75
Diagnostic Procedure 13 ......................................... 76
Diagnostic Procedure 14 ......................................... 77
Electrical Components Inspection ........................... 78
Control Panel System.............................................. 80
HA