Page 3425 of 3833

REFRIGERANT LINES
ATC-149
C
D
E
F
G
H
I
K
L
MA
B
AT C
NOTE:
After removing A/C manifold gauge set from service valves, wipe any residue from valves to prevent any
false readings by leak detector.
Cooling unit (Evaporator)
With engine OFF, turn blower fan on "High" for at least 15 seconds to dissipate any refrigerant trace in the
cooling unit. Wait a minimum of 10 minutes accumulation time (refer to the manufacturer's recommended
procedure for actual wait time) before inserting the leak detector probe into the drain hose.
Keep the probe inserted for at least 10 seconds. Use caution not to contaminate the probe tip with water
or dirt that may be in the drain hose.
5. If a leak detector detects a leak, verify at least once by blowing compressed air into area of suspected
leak, then repeat check as outlined above.
6. Do not stop when one leak is found. Continue to check for additional leaks at all system components.
If no leaks are found, perform steps 7 - 10.
7. Start engine.
8. Set the heater A/C control as follows;
a. A/C switch: ON
b. Face mode
c. Intake position: Recirculation
d. Max cold temperature
e. Fan speed: High
9. Run engine at 1,500 rpm for at least 2 minutes.
10. Turn engine off and perform leak check again following steps 4 through 6 above.
Refrigerant leaks should be checked immediately after stopping the
engine. Begin with the leak detector at the compressor. The pres-
sure on the high pressure side will gradually drop after refrigerant
circulation stops and pressure on the low pressure side will gradually
rise, as shown in the graph. Some leaks are more easily detected
when pressure is high.
11. Before connecting ACR4 to vehicle, check ACR4 gauges. No refrigerant pressure should be displayed. If
pressure is displayed, recover refrigerant from equipment lines and then check refrigerant purity.
12. Discharge A/C system using approved refrigerant recovery equipment. Repair the leaking fitting or com-
ponent as necessary.
13. Evacuate and recharge A/C system and perform the leak test to confirm no refrigerant leaks.
14. Conduct A/C performance test to ensure system works properly.
SHA839E
Page 3426 of 3833

ATC-150
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00030
COMPRESSOREJS00281
LUBRICANTEJS00282
REFRIGERANTEJS00283
ENGINE IDLING SPEEDEJS00284
Refer to EC-38, "IDLE SPEED" for QR25 engine (WITH EURO-OBD), EC-448, "IDLE SPEED" for QR25
engine (WITHOUT EURO-OBD), EC-771, "
IDLE SPEED" for QR20 engine (WITH EURO-OBD), EC-1135,
"IDLE SPEED" for QR20 engine (WITHOUT EURO-OBD), EC-1412, "Basic Inspection" ,see No.3 for YD
engine.
BELT TENSIONEJS00285
Refer to EM-12, "DRIVE BELTS" for QR engine,EM-118, "DRIVE BELTS" for YD engine.
ModelWith gasoline engine With diesel engine
Calsonic Kansei make V-6ZEXEL VALEO CLIMATE CONTROL make
DKV-11G
Type V-6 variable displacement Vane rotary
Displacement
cm
3 (cu in)/revMax. 146 (8.91)
110 (6.71)
Min. 14.5 (0.885)
Cylinder bore × stroke
mm (in)37 (1.46) × [2.3 - 25.0 (0.091 - 0.984)] -
Direction of rotation Clockwise (viewed from drive end)
Drive beltPoly V
ModelWith gasoline engine With diesel engine
Calsonic Kansei make V-6ZEXEL VALEO CLIMATE CON-
TROL make DKV-11G
Name Nissan A/C System Oil Type S Nissan A/C System Oil Type R
Part number KLH00-PAGS0 KLH00-PAGR0
Capacity
m (lmp fl oz)Total in system 180 (6.3)
Compressor (Service part) charg-
ing amount180 (6.3)
Ty p eHFC-134a (R-134a)
Capacity
kg (lb)0.50 (1.10)
Page 3427 of 3833

MTC-1
MANUAL AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
C
D
E
F
G
H
I
K
L
M
SECTION
A
B
MTC
MANUAL AIR CONDITIONER
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Wiring Diagrams and Trouble Diagnosis .................. 2
TROUBLE DIAGNOSIS .............................................. 3
How to Perform Trouble Diagnoses for Quick and
Accurate Repair ....................................................... 3
WORK FLOW ........................................................ 3
SYMPTOM TABLE ................................................ 3
Component Parts and Harness Connector Location ..... 4
PASSENGER COMPARTMENT ........................... 4
Discharge Air Flow ................................................... 5
Wiring Diagram-HEATER ......................................... 6
Operational Check ................................................... 7
CHECKING BLOWER ........................................... 7
CHECKING DISCHARGE AIR .............................. 7
CHECKING RECIRCULATION ............................. 7
CHECKING TEMPERATURE DECREASE .......... 8
CHECKING TEMPERATURE INCREASE ............ 8
Mode Door ............................................................... 9
Air Mix Door ........................................................... 10
Intake Door Motor Circuit ........................................ 11
INSPECTION FLOW ............................................ 11
COMPONENT DESCRIPTION ............................ 11
DIAGNOSTIC PROCEDURE .............................. 12
Blower Motor Circuit ............................................... 14
INSPECTION FLOW ........................................... 14
DIAGNOSTIC PROCEDURE .............................. 15
COMPONENT INSPECTION .............................. 17
Insufficient Heating ................................................. 18
INSPECTION FLOW ........................................... 18CONTROLLER .......................................................... 20
Removal and Installation ........................................ 20
Disassembly and Assembly .................................... 20
BLOWER MOTOR .................................................... 21
Removal and Installation ........................................ 21
BLOWER FAN RESISTOR ....................................... 22
Removal and Installation ........................................ 22
INTAKE DOOR MOTOR ........................................... 23
Removal and Installation ........................................ 23
HEATER UNIT ........................................................... 24
Removal and Installation ........................................ 24
REMOVAL ........................................................... 24
INSTALLATION ................................................... 25
Disassembly and Assembly .................................... 25
HEATER CORE ......................................................
... 26
Removal and Installation ........................................ 26
MODE DOOR ............................................................ 27
Control Linkage adjustment .................................... 27
MODE DOOR CONTROL CABLE ....................... 27
AIR MIX DOOR ......................................................... 28
Control Linkage Adjustment ................................... 28
AIR MIX DOOR CONTROL CABLE .................... 28
DUCTS AND GRILLES ............................................. 29
Removal and Installation ........................................ 29
VENTILATOR DUCT, DEFROSTER NOZZLE
AND DEFROSTER DUCTS ................................ 29
CENTER VENTILATOR GRILLE ......................... 29
SIDE VENTILATOR GRILLE ............................... 29
FOOT DUCT ....................................................... 30
FLOOR DUCT ..................................................... 30
Page 3428 of 3833

MTC-2
PRECAUTIONS
PRECAUTIONS
PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EJS0028D
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
●To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
●Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
●Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness connec-
tors.
Wiring Diagrams and Trouble DiagnosisEJS000WA
When you read wiring diagrams, refer to the following:
●GI-13, "How to Read Wiring Diagrams" in GI section.
●PG-3, "Wiring Diagram — POWER —" in EL section.
When you perform trouble diagnosis, refer to the following:
●GI-9, "How to Follow Trouble Diagnoses" in GI section.
●GI-23, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.
Page 3429 of 3833
TROUBLE DIAGNOSIS
MTC-3
C
D
E
F
G
H
I
K
L
MA
B
MTC
TROUBLE DIAGNOSISPFP:00004
How to Perform Trouble Diagnoses for Quick and Accurate RepairEJS001FB
WORK FLOW
SYMPTOM TABLE
*1MTC-7, "Operational Check".
SHA900E
Symptom Reference Page
Air outlet does not change. Go to Trouble Diagnosis Procedure for Mode Door.MTC-27
Discharge air temperature does not change. Go to Trouble Diagnosis Procedure Air Mix Door.MTC-28
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.MTC-11
Intake door motor does not operate normally.
Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor.MTC-14
Insufficient heating. Go to Trouble Diagnosis Procedure for Insufficient Heating.MTC-18
Page 3430 of 3833
MTC-4
TROUBLE DIAGNOSIS
Component Parts and Harness Connector Location
EJS001FC
PASSENGER COMPARTMENT
RJIA0586E
Page 3431 of 3833
TROUBLE DIAGNOSIS
MTC-5
C
D
E
F
G
H
I
K
L
MA
B
MTC
Discharge Air FlowEJS001HF
RJIA0483E
Page 3432 of 3833
MTC-6
TROUBLE DIAGNOSIS
Wiring Diagram-HEATER
EJS001FD
TJWA0009E