AT-414
[ALL]
REMOVAL AND INSTALLATION
12. Remove center member, engine insulator and engine mounting
bracket.
Center member fixing bolts to specified torque, Refer to AT-
413, "Components" .
13. Remove suspension member. Refer to FSU-12, "
FRONT SUS-
PENSION MEMBER" .
14. Remove dust cover from converter housing part.
15. Turn crankshaft, and remove the four tightening bolts for drive
plate and torque converter.
CAUTION:
The crankshaft should be rotated clockwise, viewed from
the front of engine.
16. Support engine with a transmission jack.
17. Remove bolts fixing transaxle to engine.
18. Lower transaxle while supporting it with a transmission jack.
19. Disconnect harness connector and wire harness.
20. Remove A/T fluid charging pipe.
SCIA0794E
AAT259A
ATM0479D
SCIA2595E
SRS-22
TROUBLE DIAGNOSIS
Diagnostic Code ChartEHS000O9
Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”
NO DTC IS
DETECTED.When malfunction is
indicated by the “AIR
BAG” warning lamp in
User mode.
Low battery voltage (Less than 9V)Go to SRS-21, "DIAGNOSTIC PRO-
CEDURE 3" after charging the bat-
tery.
Self-diagnostic result “SELF-DIAG
[PAST]” (previously stored in the
memory) might not be erased after
repair.
Intermittent malfunction has been
detected in the past.
Go to SRS-21, "DIAGNOSTIC PRO-
CEDURE 3" .
No malfunction is detected. —
DRIVER AIRBAG
MODULE
[OPEN]
Driver air bag module circuit is open (including the spiral cable). 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the driver air bag module.
(Before disposal, it must be
deployed.)
4. Replace the spiral cable.
5. Replace the diagnosis sensor unit.
6. Replace the related harness. DRIVER AIRBAG
MODULE
[VB-SHORT]
Driver air bag module circuit is shorted to a power supply circuit
(including the spiral cable).
DRIVER AIRBAG
MODULE
[GND-SHORT]
Driver air bag module circuit is shorted to ground (including the
spiral cable).
DRIVER AIRBAG
MODULE
[SHORT]
Driver air bag module circuit is shorted between lines.
ASSIST A/B MODULE
[OPEN]
Front passenger air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the front passenger air bag
module. (Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. ASSIST A/B MODULE
[VB-SHORT]
Front passenger air bag module circuit is shorted to a power
supply circuit.
ASSIST A/B MODULE
[GND-SHORT]
Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
Front passenger air bag module circuit is shorted between lines.
SIDE MODULE LH
[OPEN]
Front LH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the front LH setback
assembly (front LH side air bag
module).
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. SIDE MODULE LH
[VB-SHORT]
Front LH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE LH
[GND-SHORT]
Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT]
Front LH side air bag module circuit is shorted between lines.
SIDE MODULE RH
[OPEN]
Front RH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the front RH setback
assembly (front RH side air bag
module).
(Before disposal, it must be
deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness. SIDE MODULE RH
[VB-SHORT]
Front RH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE RH
[GND-SHORT]
Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT]
Front RH side air bag module circuit is shorted between lines.
ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION
A
B
AT C
AUTOMATIC AIR CONDITIONER
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions for Working with HFC-134a (R-134a) ..... 4
General Refrigerant Precautions .............................. 5
Lubricant Precautions .............................................. 5
Precautions for Refrigerant Connection ................... 5
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 6
O-RING AND REFRIGERANT CONNECTION ..... 7
Precautions for Servicing Compressor ................... 10
Precautions for Service Equipment ........................ 10
RECOVERY/RECYCLING EQUIPMENT ............ 10
ELECTRONIC LEAK DETECTOR ...................... 10
VACUUM PUMP ................................................. 10
MANIFOLD GAUGE SET .................................... 10
SERVICE HOSES ................................................ 11
SERVICE COUPLERS ......................................... 11
REFRIGERANT WEIGHT SCALE ....................... 11
CALIBRATING ACR4 WEIGHT SCALE ............... 11
CHARGING CYLINDER ...................................... 12
Precautions for Leak Detection Dye ....................... 12
IDENTIFICATION ................................................ 13
IDENTIFICATION LABEL FOR VEHICLE ........... 13
Wiring Diagrams and Trouble Diagnosis ................ 13
PREPARATION ......................................................... 14
Special Service Tools ............................................. 14
WITH GASOLINE ENGINE (CWV-615M COM-
PRESSOR) ......................................................... 14
WITH DIESEL ENGINE (DKV-11G COMPRES-
SOR) ................................................................... 14
HFC-134a (R-134a) Service Tools and Equipment ... 15
REFRIGERATION SYSTEM ..................................... 18
Refrigerant Cycle ................................................... 18
REFRIGERANT FLOW ....................................... 18
FREEZE PROTECTION (WITH GASOLINE
ENGINE: CWV-615M COMPRESSOR) .............. 18
Refrigerant System Protection ............................... 18
REFRIGERANT PRESSURE SENSOR (WITH GASOLINE ENGINE: CWV-615M COMPRES-
SOR) ................................................................... 18
DUAL-PRESSURE SWITCH (WITH DIESEL
ENGINE: DKV-11G COMPRESSOR) .................. 18
PRESSURE RELIEF VALVE (WITH GASOLINE
ENGINE: CWV-615M COMPRESSOR) .............. 18
V-6 Variable Displacement Compressor (With Gas-
oline Engine: CWV-615M Compressor) .................. 19
GENERAL INFORMATION ................................. 19
DESCRIPTION .................................................... 20
Component Layout ................................................. 23
LUBRICANT .............................................................. 24
Maintenance of Lubricant Quantity in Compressor ... 24
LUBRICANT ........................................................ 24
LUBRICANT RETURN OPERATION .................. 24
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR .................................................. 25
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT ....................... 25
AIR CONDITIONER CONTROL ............................... 27
Description of Air Conditioner LAN Control System ... 27
System Construction .............................................. 27
OPERATION ........................................................ 27
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................... 28
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) ..................................... 29
FAN SPEED CONTROL ...................................... 29
INTAKE DOOR CONTROL ................................. 29
OUTLET DOOR CONTROL ................................ 29
MAGNET CLUTCH CONTROL ........................... 29
SELF-DIAGNOSTIC SYSTEM ............................ 29
Description of Control System ................................ 30
Control Operation ................................................... 31
MODE CONTROL DIAL ...................................... 31
TEMPERATURE CONTROL DIAL (POTENTIO
TEMPERATURE CONTROL) .............................. 31
FAN CONTROL DIAL .......................................... 31
REAR WINDOW DEFOGGER SWITCH ............. 31
PRECAUTIONS
ATC-9
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CAUTION:
When replacing or cleaning refrigerant cycle components, observe the following.
When the compressor is removed, store it in the same position as it is when mounted on the car.
Malfunction to do so will cause lubricant to enter the low-pressure chamber.
When connecting tubes, always use a torque wrench and a back-up wrench.
After disconnecting tubes, immediately plug all openings to prevent entry of dirt and moisture.
When installing an air conditioner in the vehicle, connect the pipes as the final stage of the opera-
tion. Do not remove the seal caps of pipes and other components until just before required for
connection.
Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
Thoroughly remove moisture from the refrigeration system before charging the refrigerant.
Always replace used O-rings.
When connecting tube, apply lubricant to circle of the O-rings shown in illustration. Be careful not
to apply lubricant to threaded portion.
O-ring must be closely attached to dented portion of tube.
When replacing the O-ring, be careful not to damage O-ring and tube.
Connect tube until you hear it click, then tighten the nut or bolt by hand until snug. Make sure that
the O-ring is installed to tube correctly.
After connecting line, conduct leak test and make sure that there is no leakage from connections.
When the refrigerant leaking point is found, disconnect that line and replace the O-ring. Then
tighten connections of seal seat to the specified torque.With gasoline engine
(CWV-615M compressor)With diesel engine
(DKV-11G compressor)
Lubricant name : Nissan A/C System Oil Type S Nissan A/C System Oil Type R
Part number : KLH00-PAGS0 KLH00-PAGR0
RHA861F
PRECAUTIONS
ATC-11
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SERVICE HOSES
Be certain that the service hoses display the markings described
(colored hose with black stripe). All hoses must include positive shut-
off devices (either manual or automatic) near the end of the hoses
opposite the manifold gauge.
SERVICE COUPLERS
Never attempt to connect HFC-134a (R-134a) service couplers to a
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. However, if an
improper connection is attempted, discharging and contamination
may occur.
REFRIGERANT WEIGHT SCALE
Verify that no refrigerant other than HFC-134a (R-134a) and speci-
fied lubricants have been used with the scale. If the scale controls
refrigerant flow electronically, the hose fitting must be 1/2″-16
ACME.
CALIBRATING ACR4 WEIGHT SCALE
Calibrate the scale every three months.
To calibrate the weight scale on the ACR4:
1. Press Shift/Reset and Enter at the same time.
2. Press 8787 . “A1 ” will be displayed.
3. Remove all weight from the scale.
4. Press 0 , then press Enter . “0.00 ” will be displayed and change to “A2 ”.
5. Place a known weight (dumbbell or similar weight), between 4.5 and 8.6 kg (10 and 19 lb) on the center of
the weight scale.
6. Enter the known weight using four digits. (Example 10 lb = 10.00, 10.5 lb = 10.50)
7. Press Enter — the display returns to the vacuum mode.
8. Press Shift/Reset and Enter at the same time.
9. Press 6 — the known weight on the scale is displayed.
10. Remove the known weight from the scale. “0.00 ” will be displayed.
11 . P r e s s Shift/Reset to return the ACR4 to the program mode.
RHA272D
Shut-off valve rotation A/C service valve
Clockwise Open
Counterclockwise Close
RHA273D
RHA274D
ATC-12
PRECAUTIONS
CHARGING CYLINDER
Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder's top valve
when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.
Precautions for Leak Detection DyeEJS0027Z
The A/C system contains a fluorescent leak detection dye used for locating refrigerant leaks. An ultraviolet
(UV) lamp is required to illuminate the dye when inspecting for leaks.
Always wear fluorescence enhancing UV safety goggles to protect your eyes and enhance the visibility of
the fluorescent dye.
The fluorescent dye leak detector is not a replacement for an electronic refrigerant leak detector. The fluo-
rescent dye leak detector should be used in conjunction with an electronic refrigerant leak detector to (J-
41995) pin-point refrigerant leaks.
For your safety and your customer’s satisfaction, read and follow all manufacture's operating instructions
and precautions prior to performing the work.
A compressor shaft seal should not be repaired because of dye seepage. The compressor shaft seal
should only be repaired after confirming the leak with an electronic refrigerant leak detector.
Always remove any remaining dye from the leak area after repairs are complete to avoid a misdiagnosis
during a future service.
Do not allow dye to come into contact with painted body panels or interior components. If dye is spilled,
clean immediately with the approved dye cleaner. Fluorescent dye left on a surface for an extended period
of time cannot be removed.
Do not spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).
Do not use more than one refrigerant dye bottle (1/4 ounce / 7.4 cc) per A/C system.
Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Do not use
HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system or CFC-12 (R-12) leak detection
dye in HFC-134a (R-134a) A/C system or A/C system damage may result.
The fluorescent properties of the dye will remain for over three (3) years unless a compressor malfunction
occurs.
ATC-16
PREPARATION
Recovery/Recycling
Recharging equipmentFunction: Refrigerant recovery,
recycling and recharging
Electrical leak detectorPower supply:
DC 12V (Battery terminal)
(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 12V (Battery terminal)
(J-42220)
UV lamp and UV safety gogglesPower supply: DC 12V (Battery
terminal)
For checking refrigerant leak when
fluorescent dye is installed 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)
PA G o i l
Container: 1/4 ounce (7.4cc) bottle
(Includes self-adhesive dye
identification labels for affixing to
vehicle after charging system with
dye.) Tool number
Tool nameDescription
RJIA0195E
SHA705EB
ZHA200H
SHA438F
SHA439F
LUBRICANT
ATC-25
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LUBRICANT ADJUSTING PROCEDURE FOR COMPONENTS REPLACEMENT EXCEPT COM-
PRESSOR
After replacing any of the following major components, add the correct amount of lubricant to the system.
Amount of lubricant to be added
*1: If refrigerant leak is small, no addition of lubricant is needed.
LUBRICANT ADJUSTING PROCEDURE FOR COMPRESSOR REPLACEMENT
1. Before connecting ACR4 to vehicle, check ACR4 gauges. No refrigerant pressure should be displayed. If
NG, recover refrigerant from equipment lines.
2. Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure lubricant discharged into
the recovery/recycling equipment.
3. Drain the lubricant from the old (removed) compressor into a graduated container and recover the amount
of lubricant drained.
4. Drain the lubricant from the new compressor into a separate, clean container.
5. Measure an amount of new lubricant installed equal to amount drained from old compressor. Add this
lubricant to new compressor through the suction port opening.
6. Measure an amount of new lubricant equal to the amount recovered during discharging. Add this lubricant
to new compressor through the suction port opening.
7. If the liquid tank also needs to be replaced, add another 5 m (0.2 Imp fl oz) of lubricant at this time.
Do not add this 5 m (0.2 Imp fl oz) of lubricant only when replaces the compressor.
Part replacedLubricant to be added to system
Remarks
Amount of lubricant
m (Imp fl oz)
Evaporator 75 (2.6) -
Condenser 35 (1.2) -
Liquid tank 10 (0.4) -
In case of refrigerant leak30 (1.1) Large leak
- Small leak *1