Nissan X-Trail 2005 Owner's Manual
MANUAL AIR CONDITIONER
J AIR CONDITIONER
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SECTION MTC
MANUAL AIR CONDITIONER
CONTENTS
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Rest raint 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
INSPECTION FLOW ............................................. 9
Air Mix Door ........................................................... 10
INSPECTION FLOW ........................................... 10
Intake Door Motor Circuit ........................................11
INSPECTION FLOW ............................................11
COMPONENT DESCRIPTION ............................11
DIAGNOSTIC PROCEDURE FOR INTAKE
DOOR MOTOR ................................................... 12
Blower Motor Circuit ............................................... 15
INSPECTION FLOW ........................................... 15
DIAGNOSTIC PROCEDURE FOR BLOWER
MOTOR .................................... ........................... 16
COMPONENT INSPECTION .............................. 18
Insufficient Heating ................................................. 19
INSPECTION FLOW ........................................... 19
CONTROLLER ......................................................... 21
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21
INSTALLATION ................................................... 21
Disassembly and Assembly ....................................21
BLOWER UNIT . ...... ....... ...... ....... ...... ....... ...... ....... .... 22
Removal and Installation ........................................ 22
REMOVAL ........................................................... 22
INSTALLATION ................................................... 22
Disassembly and Assembly ....................................23
BLOWER MOTOR .. ....... ....................................... .... 24
Removal and Installation ........................................ 24
REMOVAL ........................................................... 24
INSTALLATION ................................................... 24
BLOWER FAN RESISTOR ............... ....... ...... ....... ....25
Removal and Installation ........................................ 25
REMOVAL ........................................................... 25
INSTALLATION ................................................... 25
INTAKE DOOR MOTOR ........................................... 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSTALLATION ................................................... 26
HEATER UNIT ........................................................... 27
Removal and Installation ........................................ 27
REMOVAL ........................................................... 27
INSTALLATION ................................................... 28
Disassembly and Assembly ....................................29
HEATER CORE ......................................................... 30
Removal and Installation ........................................ 30
REMOVAL ........................................................... 30
INSTALLATION ................................................... 30
MODE DOOR ............................................................31
Control Linkage Adjustment ...................................31
MODE DOOR CONTROL CABLE .......................31
AIR MIX DOOR ......................................................... 32
Control Linkage Adjustment ...................................32
AIR MIX DOOR CONTROL CABLE ....................32
DUCTS AND GRILLES .............................................33
Removal and Installation ........................................ 33
REMOVAL ........................................................... 33
INSTALLATION ................................................... 36
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MTC-1
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front sea t belt , helps t o redu ce th e r isk or s everi ty of injury to th e driv er an d front passenge r for c ertain
types of collision. Info rmation necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
● To avoid rendering the SRS inoperativ e, which cou ld increase the risk of persona l injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.
● Improper maintenance, in cluding incorrect removal a nd installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For rem ova l of Sp iral Ca ble an d Air
Bag Module, see the SRS section.
● Do not use electrical test equipme nt on any circuit related to the SRS unle ss instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors .
EJS004L7
Wiring Diagrams and Trouble Diagnosis EJS000WA
When you read wiring diagrams, refer to the following:
● GI-14, "How to Read Wiring Diagrams" in GI section.
● PG-3, "Wiring Diagram — POWER —" in PG section.
When you perfo rm trouble diagnosis, refer to the following:
● GI-10, "How to Follow Trouble Diagnoses" in GI section.
● GI-23, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.
MTC-2
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS PFP:00004
How to Perform Trouble Diagnoses for Quick and Accurate Repair EJS001FB
WORK FLOW
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*1 MTC-7, "Operational Check"
SYMPTOM TABLE
Symptom Reference Page
Air outlet does not change. Go to Trouble Diagnosis Procedure for Mode Door.
Discharge air temperature does not change. Go to Trouble Diagnosis Procedure Air Mix Door.
Intake door does not change.
Intake door motor does not operate normally.
Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor Circuit.
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.
Go to Trouble Diagnosis Procedure for Intake Door Motor Circuit.
SHA900E
MTC-9, "
MTC-10, "
MTC-11, "Intake
Door Motor Cir-
MTC-15, "
Motor Circuit"
MTC-19, "
cient Heating"
Mode
Door"
Air Mix
Door"
cuit"
Blower
Insuffi-
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MTC-3
TROUBLE DIAGNOSIS
Component Parts and Harness Connector Location EJS001FC
PASSENGER COMPARTMENT
RJIA2845E
MTC-4
TROUBLE DIAGNOSIS
Discharge Air Flow EJS001HF
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SJIA0441E
MTC-5
TROUBLE DIAGNOSIS
Wiring Diagram —HEATER— EJS001FD
TJWA0076E
MTC-6
TROUBLE DIAGNOSIS
Operational Check EJS001FE
The purpose of the operational check is to confirm that the system operates properly.
Conditions :Engine running at usual operating temperature
CHECKING BLOWER
1. Turn fan switch to 1st-speed. Blower should operate on low
speed.
2. Then turn fan switch to 2nd-speed, and continue checking
blower speed until all speeds are checked.
3. Leave blower on Max. speed.
If NG, go to trouble diagn osis procedure for MTC- 15, "
Circuit" .
If OK, continue with the check.
Blower Motor
RJIA0587E
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CHECKING DISCHARGE AIR
1. Turn mode control dial to each position.
2. Confirm that discharg e air come s out acco rding to th e air distri bution table. Refer to MTC-5, "
If NG, go to trouble diagnosis procedure for MTC-9, "
Discharge Air Flow" .
Mode Door" .
If OK, continue the check.
CHECKING RECIRCULATION
1. Press REC switch. Recirculation indicator shou ld eliminate.
2. Press REC switch ag ain. Recircul ation indic ator should no t illuminate.
3. Listen for intake door p osition change (y ou should hear bl ower
sound change slightly).
If NG, go to trouble diagnos is procedure for MTC-11, "
Motor Circuit" .
If OK, continue the check.
Intake Door
RJIA0588E
RJIA0492E
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RJIA0589E
MTC-7
TROUBLE DIAGNOSIS
CHECKING TEMPERATURE DECREASE
1. Turn temperature cont rol di al to ful l co ld po si tion.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis proced ure for MTC-10, "
If OK, continue the check.
CHECKING TEMPERATURE INCREASE
1. Turn temperature cont rol di al to ful l hot pos iti on .
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for MTC-19, "
Heating" .
If all operational check are OK (symptom cannot be duplicated), go
to Incident Si mul a ti on Tests in GI-23, "
nosis for an Ele ctr ic al Inci de nt" and perform te sts as outlin ed to si m-
ulate driving conditions environment. If symptom appears, refer to
MTC-3, "
SYMPTOM TABLE" and perfo rm ap plic able tr oub le di agno -
sis procedures.
How to Perform Efficient Diag-
Air Mix Door"
Insufficient
RJIA0590E
RJIA0591E
MTC-8
TROUBLE DIAGNOSIS
Mode Door EJS001FF
SYMPTOM: Air outlet does not change.
INSPECTION FLOW
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*1 MTC-5, "Discharge Air Flow".*2MTC-7, "Operational Check".*3MTC-31, "MODE DOOR".
*4 MTC-3, "SYMPTOM TABLE".
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RJIA0592E
MTC-9
TROUBLE DIAGNOSIS
Air Mix Door EJS001FG
SYMPTOM: Air mix door does not change.
INSPECTION FLOW
*1 MTC-32, "AIR MIX DOOR".*2MTC-3, "SYMPTOM TABLE".*3MTC-7, "Operational Check".
MTC-10
RJIA0593E
TROUBLE DIAGNOSIS
Intake Door Motor Circuit EJS004HC
SYMPTOM:
● Intake door does not change.
● Intake door mo tor does not operate normally.
INSPECTION FLOW
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*1 MTC-11, "Intake Doo r Mo to r Circuit".*2MTC-7, "Operational Check".*3MTC-3, "SYMPTOM TABLE".
COMPONENT DESCRIPTION
Intake Door Motor
The intake door motor is attached to the intake unit. It rotates so that
air is drawn from inlets set by the heater control panel. Motor rotation
is conveyed to a lever which activates the intake door.
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RJIA0594E
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RJIA0519E
MTC-11
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