Page 3065 of 5598

PREPARATIONHA-9
< PREPARATION >
C
DE
F
G H
J
K L
M A
B
HA
N
O P
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000006276517
The actual shapes of Kent-Moore tools may differ fr om those of special service tools illustrated here.
HFC-134a (R-134a) Service Tool and Equipment
Never mix HFC-134a (R-134a) refrigerant and/or its spec ified lubricant with CFC-12 (R-12) refrigerant and/
or its lubricant.
Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/
lubricant.
Refrigerant container fittings, service hose fittings and service equipment fittings (equipment that handles
refrigerant and/or lubricant) are different between CF C-12 (R-12) and HFC-134a (R-134a). This is to avoid
mixed use of the refrigerants/lubricant.
Never use adapters that convert one size fitting to another. Refrigerant/lubricant contamination occurs and
compressor malfunction may result.
Tool number
(Kent-Moore No.) Tool name Description
KV99106100
(J-41260)
Pulley installer Installing pulley
(ACR2005-NI)
ACR5 A/C Se rvice Center Function: Refrigerant recovery, recycling
and recharging
(J-41995)
Electrical leak detector Power supply:
DC 12 V (Battery terminal)
S-NT235
WJIA0293E
AHA281A
Revision: 2010 May2011 QX56
Page 3066 of 5598

HA-10
< PREPARATION >
PREPARATION
(J-43926)
Refrigerant dye leak detection
kit
Kit includes:
(J-42220)
UV lamp and UV safety goggles
(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce
bottle
(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles)
(J-43872)
Refrigerant dye cleanerPower supply:
DC 12 V (Battery terminal)
(J-42220)
UV lamp and UV safety goggles Power supply:
DC 12 V (Battery terminal)
For checking refrigerant leakage when flu-
orescent dye is equipped in A/C system
Includes:
UV lamp and UV safety goggles
(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles) Application:
For HFC-134a (R-134a) PAG oil
Container:
1/4 ounce (7.4 cc) bottle
(Includes self-adhesive dye identification
labels for affixing to vehicle after charging
system with dye.)
(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce
bottle For injecting 1/4 ounce of fluorescent leak
detection dye into A/C system
(J-43872)
Refrigerant dye cleaner For cleaning dye spills
Tool number
(Kent-Moore No.)
Tool name Description
ZHA200H
SHA438F
SHA439F
SHA440F
SHA441F
Revision: 2010 May2011 QX56
Page 3067 of 5598

PREPARATIONHA-11
< PREPARATION >
C
DE
F
G H
J
K L
M A
B
HA
N
O P
(J-39183)
Manifold gauge set (with hoses
and couplers) Identification:
The gauge face indicates HFC-134a (R-
134a).
Fitting size: Thread size
1/2
″-16 ACME
Service hoses
High-pressure side hose (J-39501-72)
Low-pressure side hose
(J-39502-72)
Utility hose (J-39476-72) Hose color:
Low-pressure side hose: Blue with black
stripe
High-pressure side hose: Red with black stripe
Utility hose: Yellow with black stripe or
green with black stripe
Hose fitting to gauge:
1/2
″-16 ACME
Service couplers
High-pressure side coupler (J-39500-20)
Low-pressure side coupler (J-39500-24) Hose fitting to service hose:
M14 x 1.5 fitting is optional or permanently
attached.
(J-39650)
Refrigerant weight scale For measuring of refrigerant
Fitting size: Thread size
1/2
″-16 ACME
(J-39649)
Va c u u m p u m p
(Including the isolator valve) Capacity:
Air displacement: 4 CFM
Micron rating: 20 microns
Oil capacity: 482 g (17 oz.)
Fitting size: Thread size
1/2
″-16 ACME
Tool number
(Kent-Moore No.)
Tool name Description
RJIA0196E
S-NT201
S-NT202
S-NT200
S-NT203
Revision: 2010 May2011 QX56
Page 3068 of 5598

HA-12
< PREPARATION >
PREPARATION
Commercial Service Tool
INFOID:0000000006276518
Sealant or/and LubricantINFOID:0000000006276143
HFC-134a (R-134a) Service Tool and Equipment
Never mix HFC-134a (R-134a) refrigerant and/or its s pecified lubricant with CFC-12 (R-12) refrigerant and/
or its lubricant.
Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/ lubricant.
Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles
refrigerant and/or lubricant) are different between CF C-12 (R-12) and HFC-134a (R-134a). This is to avoid
mixed use of the refrigerants/lubricant.
Never use adapters that convert one size fitting to another: refrigerant/lubricant contamination occurs and
compressor malfunction may result.
Tool name Description
Refrigerant identifier equipment Checking for refrigerant purity and
system contamination
Power tools For loosening bolts and nuts
RJIA0197E
PBIC0190E
Tool name Description
HFC-134a (R-134a) refrigerant Container color: Light blue
Container marking: HFC-134a (R-
134a)
Fitting size: Thread size
Large container 1/2
″-16 ACME
A/C System Oil Type S (DH-PS) Type: Polyalkylene glycol oil (PAG),
type S (DH-PS)
Application:
HFC-134a (R-134a) swash plate com-
pressors
Capacity: 40 m (1.4 Imp fl oz.)
S-NT196
S-NT197
Revision: 2010 May2011 QX56
Page 3069 of 5598

COMPONENT PARTSHA-13
< SYSTEM DESCRIPTION >
C
DE
F
G H
J
K L
M A
B
HA
N
O P
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006276144
Component DescriptionINFOID:0000000006276145
JMIIA0920ZZ
1. Condenser 2. Refrigerant pressure sensor 3. Liquid tank
4. Compressor 5. Front evaporator 6. Front expansion valve
7. Rear evaporator 8. Rear expansion valve
A. Built-in heater & cooling unit assem- bly B. Built-in rear coolier unit assembly
Component Description
Evaporator The mist form liquid refrigerant transforms to gas by evaporation by the air conveyed from blower
motor. The air is cooled by the heat by evaporation.
Condenser Cools refrigerant discharged from compressor, and transforms it to liquid refrigerant.
Compressor Intakes, compresses, and discharges refrigerant, to circulate refrigerant inside the refrigerant cycle.
Refrigerant pressure sensor Refer to EC-32, "
Refrigerant Pressure Sensor" .
Liquid tank Eliminates foreign matter in refrigerant, and stores temporarily liquid refrigerant.
Expansion valve Transforms high-pressure liquid refrigerant to mist form low-pressure liquid refrigerant by drawing
function.
Revision: 2010 May2011 QX56
Page 3070 of 5598
HA-14
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
System DiagramINFOID:0000000006276146
System DescriptionINFOID:0000000006276147
REFRIGERANT CYCLE
Refrigerant Flow
JMIIA0921GB
Revision: 2010 May2011 QX56
Page 3071 of 5598

SYSTEMHA-15
< SYSTEM DESCRIPTION >
C
DE
F
G H
J
K L
M A
B
HA
N
O P
The refrigerant from the compressor, frows the condens er with liquid tank, the evaporator, and returns to the
compressor. The refrigerant evaporation in the evaporator is controlled by an expansion valve.
Freeze Protection
Automatic air conditioner When intake sensor detects that evaporator surface temperature is 2.5°C (37 °F) or less, A/C auto amp.
requests BCM to turn the compressor OFF.
BCM requests ECM to turn the compressor to OFF by the signal from A/C auto amp., and ECM makes A/C
relay to OFF, and stops the compressor.
REFRIGERANT SYSTEM PROTECTION
Refrigerant Pressure Sensor
The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure
sensor, installed at the condenser exit. The refrigerant pressure sensor detects the pressure inside the
refrigerant line and sends the voltage signal to the ECM if the system pressure rises above, or falls below
the specifications.
ECM turns the A/C relay to OFF and stops the compress or when the high-pressure side detected by refriger-
ant pressure sensor is following conditions;
- Approximately 3,120 kPa (31.8 kg/cm
2, 452 psi) or more (Engine speed is less than 1,500 rpm.)
- Approximately 2,740 kPa (27.9 kg/cm
2, 397 psi) or more (Engine speed is 1,500 rpm or more.)
- Approximately 140 kPa (1.4 kg/cm
2, 20 psi) or less
Pressure Relief Valve
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
The release port on the pressure relief valve automatical ly opens and releases refrigerant into the atmosphere
when the pressure of refrigerant in the system incr eases to an unusual level [more than 3,800 kPa (38.8 kg/
cm
2, 551 psi)].
Revision: 2010 May2011 QX56
Page 3072 of 5598
HA-16
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000006276148
OVERALL SEQUENCE
DETAILED FLOW
1.INTERVIEW FOR MALFUNCTION
Interview the symptom to the customer.
NNIIA0143GB
Revision: 2010 May2011 QX56