ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION AT C
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AT C
AUTOMATIC AIR CONDITIONER
PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 5
OPERATION PROCEDURE ................................. 5
Precautions for Working with HFC-134a (R-134a) ..... 5
General Refrigerant Precautions .............................. 6
Precautions for Refrigerant Connection ................... 6
ABOUT ONE-TOUCH JOINT ................................ 6
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 8
O-RING AND REFRIGERANT CONNECTION ..... 9
Precautions for Servicing Compressor .................... 11
Precautions for Service Equipment ........................ 12
RECOVERY/RECYCLING EQUIPMENT ............ 12
ELECTRICAL LEAK DETECTOR ....................... 12
VACUUM PUMP ................................................. 12
MANIFOLD GAUGE SET .................................... 12
SERVICE HOSES ............................................... 13
SERVICE COUPLERS ........................................ 13
REFRIGERANT WEIGHT SCALE ...................... 13
CALIBRATING ACR4 WEIGHT SCALE .............. 13
CHARGING CYLINDER ...................................... 14
Precautions for Leak Detection Dye ....................... 14
IDENTIFICATION ................................................ 14
IDENTIFICATION LABEL FOR VEHICLE ........... 14
PREPARATION ......................................................... 15
Special Service Tools ............................................. 15
HFC-134a (R-134a) Service Tools and Equipment ... 16
Commercial Service Tools ...................................... 18
REFRIGERATION SYSTEM ..................................... 19
Refrigerant Cycle ................................................... 19
REFRIGERANT FLOW ....................................... 19
FREEZE PROTECTION ..................................... 19
Refrigerant System Protection ............................... 19
REFRIGERANT PRESSURE SENSOR ............. 19
PRESSURE RELIEF VALVE ............................... 19
Component Layout ................................................. 20LUBRICANT .............................................................. 21
Maintenance of Lubricant Quantity in Compressor ... 21
LUBRICANT ........................................................ 21
LUBRICANT RETURN OPERATION .................. 21
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR .................................................. 22
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT ....................... 22
AIR CONDITIONER CONTROL ............................... 24
Description of Air Conditioner LAN Control System ... 24
System Construction .............................................. 24
OPERATION ........................................................ 24
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................... 25
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) ..................................... 26
FAN SPEED CONTROL ...................................... 26
INTAKE DOOR CONTROL ................................. 26
MODE DOOR CONTROL ................................... 26
MAGNET CLUTCH CONTROL ........................... 27
SELF-DIAGNOSIS SYSTEM .............................. 27
Description of Control System ................................ 28
Control Operation ................................................... 29
DISPLAY SCREEN .............................................. 29
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (DRIVER
SIDE) ................................................................... 29
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (PASSEN-
GER SIDE) .......................................................... 29
AUTO SWITCH ................................................... 29
A/C SWITCH ....................................................... 29
FAN SWITCH ...................................................... 29
INTAKE SWITCH ................................................. 30
MODE SWITCH .................................................. 30
DEFROSTER (DEF) SWITCH ............................. 30
REAR WINDOW DEFOGGER SWITCH ............. 30
DUAL SWITCH .................................................... 30
Fail-safe Function ................................................... 30
BL-2 Check Door Lock Actuator Output Signal ............... 39
Check Door Lock Actuator Circuit .......................... 40
(DRIVER SIDE AND REAR LH) .......................... 40
(PASSENGER SIDE AND REAR RH) ................. 41
Check Door Unlock Sensor .................................... 42
FUEL FILLER LID OPENER ..................................... 44
Component Part and Harness Connector Location ... 44
Wiring Diagram –F/LID– ......................................... 45
REMOTE KEYLESS ENTRY SYSTEM ..................... 46
Component Parts and Harness Connector Location ... 46
System Description ................................................. 46
INPUTS ............................................................... 46
OPERATED PROCEDURE ................................. 47
CAN Communication System Description .............. 48
CAN Communication Unit ....................................... 48
Schematic ............................................................... 49
Wiring Diagram — KEYLES— ................................ 50
FIG. 1 ................................................................... 50
FIG. 2 ................................................................... 51
FIG. 3 ................................................................... 52
Terminals and Reference Value for BCM ................ 53
Terminals and Reference Value for IPDM E/R ........ 54
CONSULT-II Function (BCM) .................................. 54
CONSULT-II START PROCEDURE .................... 54
CONSULT-II APPLICATION ITEMS .................... 54
Work Flow ............................................................... 56
Trouble Diagnosis Symptom Chart ......................... 56
Check Key Fob Battery and Function ..................... 57
Check ACC Switch ................................................. 58
Check Door Switch ................................................. 59
CHECK DOOR SWITCH (EXCEPT TRUNK
ROOM LAMP SWITCH) ...................................... 59
CHECK TRUNK ROOM LAMP SWITCH ............ 61
Check Key Switch ................................................... 63
Check Hazard Function .......................................... 64
Check Map Lamp and Ignition Keyhole Illumination
Function .................................................................. 64
ID Code Entry Procedure ....................................... 64
KEY FOB ID SET UP WITH CONSULT-II ........... 64
KEY FOB ID SET UP WITHOUT CONSULT-II .... 66
Key Fob Battery Replacement ................................ 67
INTELLIGENT KEY SYSTEM ................................... 68
Component Parts and Harness Connector Location ... 68
System Description ................................................. 70
DOOR LOCK/UNLOCK, TRUNK OPEN FUNC-
TION .................................................................... 70
REMOTE KEYLESS ENTRY FUNCTIONS ......... 71
ENGINE START FUNCTION ............................... 72
WARNING AND ALARM FUNCTION .................. 73
CHANGE SETTINGS FUNCTION ....................... 76
INTELLIGENT KEY REGISTRATION .................. 76
STEERING LOCK UNIT REGISTRATION .......... 77
CAN Communication System Description .............. 77
CAN Communication Unit ....................................... 77
Schematic ............................................................... 78
Wiring Diagram — I/KEY— .................................... 80
Terminals and Reference Value for Intelligent Key
Unit ......................................................................... 88
Terminals and Reference Value for Steering Lock Unit .......................................................................... 90
Terminals and Reference Value for BCM ................ 90
Diagnosis Procedure ............................................... 91
WORK FLOW ...................................................... 91
ENGINE START FUNCTION DIAGNOSTIC
PROCEDURE ...................................................... 92
CONSULT-II Functions (INTELLIGENT KEY) ......... 93
CONSULT-II Inspection Procedure ......................... 93
BASIC OPERATION ............................................ 93
CONSULT-II Application Items ................................ 93
SELF-DIAGNOSTIC RESULTS ........................... 93
DATA MONITOR .................................................. 93
WORK SUPPORT ............................................... 94
ACTIVE TEST ...................................................... 95
Trouble Diagnosis Symptom Chart ......................... 96
ALL FUNCTIONS OF THE INTELLIGENT KEY
ARE NOT OPERATING ....................................... 96
REMOTE KEYLESS ENTRY FUNCTION MAL-
FUNCTION .......................................................... 96
DOOR LOCK FUNCTION MALFUNCTION ......... 97
TRUNK OPEN FUNCTION MALFUNCTION ....... 97
HAZARD REMINDER FUNCTION MALFUNC-
TION .................................................................... 98
ENGINE START FUNCTION MALFUNCTION .... 98
WARNING CHIME FUNCTION MALFUNCTION ... 99
Check CAN Communication System ....................100
Check Intelligent Key Unit Power Supply and
Ground Circuit .......................................................100
Check Key Switch (Intelligent Key Unit Input) .......101
Check Key Switch (BCM Input) .............................102
Check Ignition knob Switch ...................................103
Check Door Switch ...............................................105
CHECK DOOR SWITCH (EXCEPT TRUNK
ROOM LAMP SWITCH) .....................................105
CHECK TRUNK ROOM LAMP SWITCH ...........107
Check Door Request Switch .................................109
Check Intelligent Key Warning Buzzer .................. 111
Check Outside Key Antenna .................................112
Check Inside Key Antenna ....................................114
Check Steering Lock Unit ......................................115
Check Headlamp Function ....................................117
Removal and Installation of Intelligent Key Unit ....117
REMOVAL ..........................................................117
INSTALLATION ..................................................117
Intelligent Key Battery Replacement .....................117
DISASSEMBLY AND ASSEMBLY OF INTELLI-
GENT KEY .........................................................117
INTELLIGENT KEY BATTERY INSPECTION ...118
DOOR ......................................................................119
Fitting Adjustment .................................................119
FRONT DOOR ...................................................119
REAR DOOR .....................................................119
STRIKER ADJUSTMENT ..................................120
Removal and Installation of Front Door ................120
REMOVAL ..........................................................120
INSTALLATION ..................................................120
Removal and Installation of Rear Door .................120
REMOVAL ..........................................................121
REMOTE KEYLESS ENTRY SYSTEM
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Check Key Fob Battery and FunctionBIS000WP
1. CHECK KEY FOB BATTERY
1. Remove key fob battery. Refer to BL-67, "
Key Fob Battery Replacement" .
2. Measure voltage between battery positive and negative termi-
nals, (+) and (−).
NOTE:
Key fob does not function if battery is not set correctly.
OK or NG
OK >> GO TO 2.
NG >> Replace battery.
2. CHECK KEY FOB FUNCTION
With CONSULT-II
Check key fob function in “DATA MONITOR” mode with CONSULT-II. When pushing each button of key fob,
the corresponding monitor item should be turned as follows.
OK or NG
OK >> Key fob is OK.
NG >> Replace key fob.Voltage : 2.5 – 3.0V
SEL237W
Condition Monitor item
Pushing LOCK KEYLESS LOCK : ON
Pushing UNLOCK KEYLESS UNLOCK : ON
Pushing PANIC KEYLESS PANIC : ON
PIIB0595E
REMOTE KEYLESS ENTRY SYSTEM
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NOTE:
If a key fob is lost, the ID code of the lost key fob must be erased to prevent unauthorized use. A specific
ID code can be erased with CONSULT-II. However, when the ID code of a lost key fob is not known, all
controller ID codes should be erased. After all ID codes are erased, the ID codes of all remaining and/or
new key fobs must be re-registered.
To erase all ID codes in memory, register one ID code (key fob) five times. After all ID codes are erased,
the ID codes of all remaining and/or new key fobs must be re-registered.
When registering an additional key fob, the existing ID codes in memory may or may not be erased. If five
ID codes are stored in memory, when an additional code is registered, only the oldest code is erased. If
less than five ID codes are stored in memory, when an additional ID code is registered, the new ID code is
added and no ID codes are erased.
If you need to activate more than two additional new key fobs, repeat the procedure “Additional ID code
entry” for each new key fob.
Entry of maximum five ID codes is allowed. When more than six ID codes are entered, the oldest ID code
will be erased.
Even if same ID code that is already in the memory is input, the same ID code can be entered. The code
is counted as an additional code.
Key Fob Battery ReplacementBIS000WX
PIIB8752E
INTELLIGENT KEY SYSTEM
BL-117
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Check Headlamp FunctionBIS000XO
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-II, then perform the trouble diagnosis of
malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BCS-14, "
CAN Communication
Inspection Using CONSULT-II (Self-Diagnosis)" .
1. CHECK HEADLAMP OPERATION
Does headlamp come on when turning lighting switch “ON”?
YES or NO
YES >> Headlamp operation circuit is OK.
NO >> Check headlamp system. Refer to LT- 6 , "
HEADLAMP - XENON TYPE -" .
Removal and Installation of Intelligent Key UnitBIS001TH
REMOVAL
1. Remove the instrument driver lower panel. Refer to IP-10, "Component Parts Location" .
2. Disconnect Intelligent Key unit connector, remove screw and
Intelligent Key unit.
INSTALLATION
Install in the reverse order of removal.
Intelligent Key Battery ReplacementBIS001TI
DISASSEMBLY AND ASSEMBLY OF INTELLIGENT KEY
1. Release the lock knob at the back of the Intelligent Key and remove the mechanical key.
2. Insert a flat-blade screwdriver (A) wrapped with a close into the
slit of the corner and twist it to separate the upper part from the
lower part.
CAUTION:
Be careful not to touch the circuit board or battery termi-
nal.
The key fob is water-resistant. However, if it does get wet,
immediately wipe it dry.
3. Replace the battery with new one.
4. Align the tips of the upper and lower parts, and then push them
together until it is securely closed.
CAUTION:
When replacing battery, be sure to keep dirt, grease, and
other foreign materials off the electrode contact area.
After replacing the battery, check to make sure all Intelli-
gent Key functions work normally.
PIIB0276E
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TROUBLE DIAGNOSIS
CVT-25
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CVT
Step Motor
If an unexpected signal is sent from the step motor to the TCM, the step motor coil phases “A” through “D” are
all turned OFF to hold the gear ratio used right before the non-standard condition occurred.
CVT Lock-up Select Solenoid
If an unexpected signal is sent from the solenoid to the TCM, the CVT lock-up select solenoid is turned OFF to
cancel the lock-up.
TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the memory back-up power supply (for
controlling) from the battery is not supplied to TCM. Normal statues is restored when turning the ignition switch
OFF to ON after the normal power supply.
How to Perform Trouble Diagnosis for Quick and Accurate RepairBCS001GG
INTRODUCTION
The TCM receives a signal from the vehicle speed sensor, PNP
switch and provides shift control or lock-up control via CVT solenoid
valves.
Input and output signals must always be correct and stable in the
operation of the CVT system. The CVT system must be in good
operating condition and be free of valve seizure, solenoid valve mal-
function, etc.
It is much more difficult to diagnose an error that occurs intermit-
tently rather than continuously. Most intermittent errors are caused
by poor electric connections or improper wiring. In this case, careful
checking of suspected circuits may help prevent the replacement of
good parts.
A visual check only may not find the cause of the errors. A road test
with CONSULT-II or a circuit tester connected should be performed.
Follow the CVT-26, "
WORK FLOW" .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such errors, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “DIAGNOSTIC WORKSHEET” as
shown on the example (Refer to CVT-27
) should be used.
Start your diagnosis by looking for “conventional” errors first. This will
help troubleshoot driveability errors on an electronically controlled
engine vehicle.
Also check related Service bulletins.
SAT631IB
SAT632I
SEF234G
EM-2 CAMSHAFT ............................................................... 41
Removal and Installation ........................................ 41
REMOVAL ........................................................... 41
INSPECTION AFTER REMOVAL ........................ 44
INSTALLATION .................................................... 47
INSPECTION AFTER INSTALLATION ................ 49
Valve Clearance ...................................................... 50
INSPECTION ....................................................... 50
ADJUSTMENT .................................................... 51
TIMING CHAIN .......................................................... 53
Removal and Installation ........................................ 53
REMOVAL ........................................................... 54
INSPECTION AFTER REMOVAL ........................ 57
INSTALLATION .................................................... 58
OIL SEAL .................................................................. 62
Removal and Installation of Valve Oil Seal ............. 62
REMOVAL ........................................................... 62
INSTALLATION .................................................... 62
Removal and Installation of Front Oil Seal ............. 63
REMOVAL ........................................................... 63
INSTALLATION .................................................... 63
Removal and Installation of Rear Oil Seal .............. 64
REMOVAL ........................................................... 64
INSTALLATION .................................................... 64
CYLINDER HEAD ..................................................... 65
On-Vehicle Service ................................................. 65
CHECKING COMPRESSION PRESSURE ......... 65
Removal and Installation ........................................ 66
REMOVAL ........................................................... 66
INSPECTION AFTER REMOVAL ........................ 67
INSTALLATION .................................................... 68
INSPECTION AFTER INSTALLATION ................ 68
Disassembly and Assembly .................................... 70
DISASSEMBLY ................................................... 70
ASSEMBLY ......................................................... 71
Inspection After Disassembly ................................. 72
VALVE DIMENSIONS .......................................... 72
VALVE GUIDE CLEARANCE .............................. 73
VALVE GUIDE REPLACEMENT ......................... 73
VALVE SEAT CONTACT ..................................... 75
VALVE SEAT REPLACEMENT ........................... 75
VALVE SPRING SQUARENESS ......................... 76
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................... 76
ENGINE ASSEMBLY ................................................ 77
Removal and Installation ........................................ 77
REMOVAL ........................................................... 78
INSTALLATION .................................................... 79
INSPECTION AFTER INSTALLATION ................ 80
CYLINDER BLOCK ................................................... 81
Disassembly and Assembly .................................... 81
DISASSEMBLY ................................................... 82
ASSEMBLY ......................................................... 86
How to Select Piston and Bearing .......................... 91
DESCRIPTION .................................................... 91
HOW TO SELECT PISTON ................................. 92
HOW TO SELECT CONNECTING ROD BEAR-ING ....................................................................... 92
HOW TO SELECT MAIN BEARING .................... 95
Inspection After Disassembly .................................. 99
CRANKSHAFT END PLAY .................................. 99
CONNECTING ROD SIDE CLEARANCE ........... 99
PISTON TO PISTON PIN OIL CLEARANCE ....... 99
PISTON RING SIDE CLEARANCE ...................100
PISTON RING END GAP ..................................100
CONNECTING ROD BEND AND TORSION .....101
CONNECTING ROD BIG END DIAMETER ......101
CONNECTING ROD BUSHING OIL CLEAR-
ANCE .................................................................101
CYLINDER BLOCK DISTORTION ....................102
MAIN BEARING HOUSING INNER DIAMETER .103
PISTON TO CYLINDER BORE CLEARANCE ..103
CRANKSHAFT MAIN JOURNAL DIAMETER ...104
CRANKSHAFT PIN JOURNAL DIAMETER ......105
OUT-OF-ROUND AND TAPER OF CRANK-
SHAFT ...............................................................105
CRANKSHAFT RUNOUT ..................................105
CONNECTING ROD BEARING OIL CLEAR-
ANCE .................................................................105
MAIN BEARING OIL CLEARANCE ...................106
MAIN BEARING CRUSH HEIGHT ....................107
CONNECTING ROD BEARING CRUSH
HEIGHT .............................................................107
LOWER CYLINDER BLOCK MOUNTING BOLT
OUTER DIAMETER ...........................................107
CONNECTING ROD BOLT OUTER DIAMETER .107
SERVICE DATA AND SPECIFICATIONS (SDS) ....108
Standard and Limit ................................................108
GENERAL SPECIFICATIONS ...........................108
DRIVE BELT ......................................................108
EXHAUST MANIFOLD ......................................108
SPARK PLUG ....................................................108
CYLINDER HEAD ..............................................108
VALVE ................................................................109
CAMSHAFT AND CAMSHAFT BEARING .........113
CYLINDER BLOCK ............................................113
PISTON, PISTON RING AND PISTON PIN ......114
CONNECTING ROD ..........................................115
CRANKSHAFT ...................................................115
MAIN BEARING .................................................117
CONNECTING ROD BEARING .........................118
VQ
PRECAUTIONS .......................................................119
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................119
OPERATION PROCEDURE ..............................119
Precautions for Drain Engine Coolant ...................119
Precautions for Disconnecting Fuel Piping ...........119
Precautions for Removal and Disassembly ..........119
Precautions for Inspection, Repair and Replace-
ment ......................................................................119
Precautions for Assembly and Installation ............119
PRECAUTIONS
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[QR]PRECAUTIONSPFP:00001
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectBBS005KH
NOTE:
This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT
SYSTEM).
Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.
Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Drain Engine CoolantBBS005KI
Drain engine coolant when engine is cooled.
Precautions for Disconnecting Fuel PipingBBS005KJ
Before starting work, make sure no fire or spark producing items are in the work area.
Release fuel pressure before disassembly.
After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyBBS005KK
When instructed to use special service tools, use the specified tools. Always be careful to work safely,
avoid forceful or uninstructed operations.
Exercise maximum care to avoid damage to mating or sliding surfaces.
Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials.
Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.
When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified.
Precautions for Inspection, Repair and ReplacementBBS005KL
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationBBS005KM
Use torque wrench to tighten bolts or nuts to specification.