MTC-1
AIR CONDITIONER
C
D
E
F
G
H
I
K
L
M
SECTION MTC
A
B
MTC
N
O
P
CONTENTS
MANUAL AIR CONDITIONER
SERVICE INFORMATION ............................3
PRECAUTIONS ...................................................3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
3
Precaution for Procedure without Cowl Top Cover ......3
Precaution for Working with HFC-134a (R-134a) ......3
General Refrigerant Precaution ................................4
Oil Precaution ............................................................4
Precaution for Refrigerant Connection ......................4
Precaution for Service of Compressor ......................7
Precaution for Service Equipment .............................7
Precaution for Leak Detection Dye ...........................9
PREPARATION ..................................................10
Special Service Tool ...............................................10
HFC-134a (R-134a) Service Tool and Equipment ....10
Commercial Service Tool ........................................13
REFRIGERATION SYSTEM ..............................14
Refrigerant Cycle ....................................................14
Refrigerant System Protection ................................14
Component Part Location .......................................15
OIL ......................................................................16
Maintenance of Oil Quantity in Compressor ...........16
AIR CONDITIONER CONTROL .........................19
Control Operation ....................................................19
Discharge Air Flow ..................................................20
System Description .................................................20
CAN Communication System Description ...............21
TROUBLE DIAGNOSIS .....................................22
CONSULT-III Function (BCM) .................................22
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ......................................................
22
Component Parts and Harness Connector Loca-
tion ..........................................................................
23
Schematic ...............................................................25
Wiring Diagram - Heater - .......................................26
Wiring Diagram - A/C,M - ........................................27
Operational Check ...................................................30
Mode Door ...............................................................31
Air Mix Door .............................................................32
Intake Door ..............................................................33
Front Blower Motor Circuit .......................................33
Magnet Clutch Circuit (If Equipped) .........................37
Insufficient Cooling ..................................................45
Insufficient Heating ..................................................52
Noise .......................................................................53
CONTROLLER ..................................................55
Removal and Installation .........................................55
Disassembly and Assembly .....................................56
THERMO CONTROL AMPLIFIER ....................57
Removal and Installation .........................................57
A/C UNIT ASSEMBLY ......................................58
Removal and Installation .........................................58
Disassembly and Assembly .....................................60
BLOWER MOTOR ............................................62
Removal and Installation .........................................62
INTAKE DOOR ..................................................63
Intake Door Cable Adjustment .................................63
AIR MIX DOOR .................................................64
Air Mix Door Cable Adjustment ...............................64
MODE DOOR ....................................................65
Mode Door Cable Adjustment .................................65
BLOWER FAN RESISTOR ...............................66
Removal and Installation .........................................66
HEATER CORE .................................................67
Removal and Installation .........................................67
AIR CONDITIONER FILTER .............................68
Removal and Installation .........................................68
PG-58
< SERVICE INFORMATION >
HARNESS
Wiring Diagram Codes (Cell Codes)
INFOID:0000000001704709
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
D3 D404 W/3 : Rear wiper motor
D4 D405 W/4 : Back door lock assembly
D4 D406 W/2 : Back door request switch
E2 D407 W/2 : High mounted stop lamp
D4 D408 BR/2 : Back door opener switch
E4 D409 B/1 : Condenser-1
C2 D410 — : Body ground
E3 D411 B/1 : Condenser-1
E1 D412 B/1 : Rear window defogger (+)
C2 D413 B/1 : Rear window defogger (-)
F3 D414 — : Body ground
Code Section Wiring Diagram Name
ABS BRC Anti-lock Brake System
A/C,M MTC Manual Air Conditioner
APPS1 EC Accelerator Pedal Position Sensor
A/F EC Air Fuel Ratio Sensor 1
A/FH EC Air Fuel Ratio Sensor 1 Heater
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC ASCD Brake Switch
ASC/SW EC ASCD Steering Switch
ASCBOF EC ASCD Brake Switch
ASCIND EC ASCD Indicator
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
BACK/L LT Back-up Lamp
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
B/DOOR BL Back Door Opener
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN CVT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
COOL/F EC Cooling Fan Control
COMBSW LT Combination Switch
CVTIND DI CVT Indicator Lamp
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
ECTS EC Engine Coolant Temperature Sensor
ENGSS AT Engine Speed Signal
EPS STC Electronic Controlled Power Steering
ETC1 EC Electric Throttle Control Function
RF-1
BODY
C
D
E
F
G
H
J
K
L
M
SECTION RF
A
B
RF
N
O
P
CONTENTS
ROOF
PRECAUTION ...............................................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution .................................................................2
PREPARATION ............................................3
PREPARATION ...................................................3
Commercial Service Tool ..........................................3
SYMPTOM DIAGNOSIS ...............................4
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ................................................................
4
Work Flow .................................................................4
Generic Squeak and Rattle Troubleshooting ............6
Diagnostic Worksheet ...............................................8
FUNCTION DIAGNOSIS ..............................10
TROUBLE DIAGNOSIS .....................................10
Component Parts and Harness Connector Loca-
tion ..........................................................................
10
System Description ..................................................10
CAN Communication System Description ...............12
Wiring Diagram - SROOF - ......................................13
Terminal and Reference Value for BCM ..................14
Terminal and Reference Value for Sunroof Motor
Assembly .................................................................
15
Work Flow ................................................................15
CONSULT-III Function (BCM) .................................15
Work Support ...........................................................16
Active Test ...............................................................16
Data Monitor ............................................................16
Trouble Diagnosis Chart by Symptom .....................16
BCM Power Supply and Ground Circuit Inspection
....
16
Sunroof Switch System Inspection ..........................16
Sunroof Motor Assembly Power Supply and
Ground Circuit Inspection ........................................
18
Door Switch Check ..................................................19
ON-VEHICLE REPAIR .................................21
SUNROOF .........................................................21
Removal and Installation .........................................21
Fitting Adjustment ....................................................26
Inspection ................................................................27
RF-6
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
The following materials, not available through NISSAN Parts Department, can also be used to repair squeaks
and rattles.
UHMW(TEFLON) TAPE
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used in place of UHMW tape that will be visible or not fit.
Note: Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingINFOID:0000000001704189
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the areas with felt cloth tape or insulator foam blocks from
the NISSAN Squeak and Rattle Kit (J-43980) to repair the noise.
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid bumpers out of adjustment
SE-6
< SERVICE INFORMATION >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
SILICONE GREASE
Used instead of UHMW tape that will be visible or not fit.
Note: Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingINFOID:0000000001704260
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the areas with felt cloth tape or insulator foam blocks from
the NISSAN Squeak and Rattle Kit (J-43980) to repair the noise.
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid bumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket