2005 NISSAN X-TRAIL Sensors

TROUBLE DIAGNOSIS
ATC-57
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Self-diagnosis FunctionEJS004GT
DESCRIPTION
The self-diagnostic system diagnoses sensors, door motors, blower motor, etc. by system line.
Self-diagnosis is step-1 to 7. There are two ways of changing method during self-diagnosis.

Switching to self-diagnosis step-1 to 4.
Shifting from usual control to the self-diagnostic system is accomplished by starting the engine (turning
the ignition switch from OFF to ON) and pressing A/C switch for at least 5 seconds. The A/C switch must
be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This system will be
canceled by either pressing intake switch or turning the ignition switch OFF. Shifting from one step to
another is accomplished be means of turning fan control dial, as required.

Switching to self-diagnosis step-5 to 7 (Auxiliary mechanism).
Shifting from usual control to the self-diagnostic system is accomplished by starting the engine (turning
the ignition switch from OFF to ON) and pressing intake switch for at least 5 seconds. The intake switch
must be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This system
will be canceled by either pressing A/C switch or turning the ignition switch OFF. Shifting from one step to
another is accomplished by means of turning fan control dial, as required.

TROUBLE DIAGNOSIS
ATC-67
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Power Supply and Ground Circuit for Auto Amp.EJS004GV
SYMPTOM: A/C system does not come on.
INSPECTION FLOW
COMPONENT DESCRIPTION
Auto Amp. (Automatic Amplifier)
The auto amp. has a built-in microcomputer which processes infor-
mation sent from various sensors needed for air conditioner opera-
tion. The air mix door motor, mode door motor, intake door motor,
blower motor and compressor are then controlled.
The auto amp. is unitized with control mechanisms. Signals from
various switches and Potentio Temperature Control (PTC) are
directly entered into auto amp.
Self-diagnostic functions are also built into auto amp. to provide
quick check of malfunctions in the auto air conditioner system.
*1AT C - 6 5 , "Operational Check".*2ATC-68, "DIAGNOSTIC PROCE-
DURE FOR A/C SYSTEM".
RJIA2826E
RJIA2824E

ATC-74
TROUBLE DIAGNOSIS

SYSTEM DESCRIPTION
Component Parts
Mode door control system components are:

Auto amp.

Mode door motor (LCU)

A/C LAN system (PBR built-in air mix door motor, mode door motor and intake door motor)

In-vehicle sensor

Ambient sensor

Sunload sensor

Intake sensor
System Operation
The auto amp. receives data from each of the sensors. The auto amp. sends air mix door, mode door and
intake door opening angle data to the air mix door motor LCU, mode door motor LCU and intake door motor
LCU.
The air mix door motor, mode door motor and intake door motor read their respective signals according to the
address signal. Opening angle indication signals received from the auto amp. and each of the motor position
sensors are compared by the LCUs in each motor with the existing decision and opening angles. Subse-
quently, HOT/COLD or DEF/VENT or FRESH/RECIRCULATION operation is selected. The new selection
data is returned to the auto amp.
Mode Door Control Specification
*10ATC-59, "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 9.*11AT C - 6 9 , "
LAN System Circuit".*12ATC-134, "MODE DOOR MOTOR".
*13ATC-34, "
SYMPTOM TABLE".
RJIA2828E
RHA384HA

TROUBLE DIAGNOSIS
ATC-77
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SYSTEM DESCRIPTION
Component Parts
Air mix door control system components are:

Auto amp.

Air mix door motor (LCU)

A/C LAN system (PBR built-in air mix door motor, mode door motor and intake door motor)

In-vehicle sensor

Ambient sensor

Sunload sensor

Intake sensor
System Operation
The auto amp. receives data from each of the sensors. The auto amp sends air mix door, mode door and
intake door opening angle data to the air mix door motor LCU, mode door motor LCU and intake door motor
LCU.
The air mix door motor, mode door motor and intake door motor read their respective signals according to the
address signal. Opening angle indication signals received from the auto amp. and each of the motor position
sensors are compared by the LCUs in each motor with the existing decision and opening angles. Subse-
quently, HOT/COLD or DEF/VENT or FRESH/RECIRCULATION operation is selected. The new selection
data is returned to the auto amp.
Air Mix Door Control Specification
RHA424GB
RHA457H

IDX-8
ALPHABETICAL INDEX
Spark plug(QR20DE-QR25DE) ........................ EM-32
Specification value ............................. EC-120, EC-620
Speedometer ........................................................ DI-4
Spiral cable ..................................................... SRS-33
SROOF - Wiring diagram ................................... RF-11
SRS - See Supplemental Restraint System ..... SRS-6
SRS - Wiring diagram/LHD ............................. SRS-11
SRS - Wiring diagram/RHD ............................ SRS-13
SRS Trouble diagnoses .................................... SRS-8
Stall test (A/T) ...................................... AT-65, AT-257
Standardized relay ............................................. PG-77
START - Wiring diagram ........................ SC-24, SC-25
Start signal ..................................... EC-1345, EC-1696
Starter ................................................................ SC-23
Starting system .................................................. SC-23
Steering gear and linkage inspection ................ MA-45
Steering knuckle ................................................ FAX-7
Steering linkage ................................................. PS-16
Steering wheel and column ..................... PS-8, PS-11
Steering wheel turning force ................................ PS-8
Stop lamp .............................................. LT-98, LT-118
Stop lamp switch ................................ EC-405, EC-809
STOP/L - Wiring diagram ...................... LT-98, LT-118
Suction control valve .... EC-1231, EC-1275, EC-1280,
EC-1570
, EC-1614, EC-1619
Sunload sensor ............. ATC-114, ATC-116, ATC-123
Sunroof .............................................................. RF-10
Super lock .......................................................... BL-42
Supplemental Restraint System ....................... SRS-6
Supplemental restraint system - Wiring diagram/LHD ..
SRS-11
Supplemental restraint system - Wiring diagram/RHD .
SRS-13
Suspension ....................................................... MA-46
Symbols and abbreviations ........................ GI-9, GI-22
Symptom matrix chart .......................... EC-84, EC-584
Synchronizer (M/T) ............................... MT-23, MT-41
System readiness test (SRT) code .................... EC-56
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Tachometer ........................................................... DI-4
Tail lamp ............................................. LT-103, LT-116
TAIL/L - Wiring diagram ...................... LT-103, LT-145
Tailgate lamp .................................................... LT-103
TC boost control solnoid valve ...... EC-1061, EC-1506,
EC-1659
TC boost sensor ............................................ EC-1151
TCC/V - Wiring diagram ................. EC-1062, EC-1660
TCM circuit diagram ........................................... AT-21
TCM inspection table ........................... AT-94, AT-286
THEFT - Wiring diagram .................................. BL-104
Thermal protector ............................................ ATC-95
Thermostat(QR20DE-QR25DE) ....................... CO-23
Thermostat(YD22DDTi) .................................... CO-46
Three way catalyst function ............................. EC-264
Three way catalyst precautions ............................ GI-5
Three way catalyst(QR20DE-QR25DE) ........... EM-25
Throttle control motor relay ................ EC-306, EC-737
Throttle position sensor (TPS) ......... EC-171, EC-231,
EC-368
, EC-370, EC-424, EC-658, EC-680, EC-771,
EC-773
, EC-830
Throwout bearing - See Clutch release bearing CL-14
Time control system .......................................... BCS-3
Timing chain(QR20DE-QR25DE) ..................... EM-46
Timing chain(YD22DDTi) .................. EM-193, EM-198
Torque converter installation ............. AT-415, AT-523
TPS1 - Wiring diagram ..................... EC-233, EC-682
TPS2 - Wiring diagram ..................... EC-173, EC-660
TPS3 - Wiring diagram ..................... EC-426, EC-832
Transmission case (M/T) ...................... MT-22, MT-40
Trouble diagnoses .............................................. GI-10
Turbocharger charge air cooler(YD22DDTi) ... EM-144
Turbocharger precautions ..................................... GI-6
Turbocharger(YD22DDTi) ............................... EM-151
TURN - Wiring diagram .......................... LT-87, LT-89
Turn signal lamp ................................... LT-87, LT-118
Two trip detection logic ....................... EC-52, EC-565
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Vacuum hose (brake system) ............................ BR-25
Vacuum hose drawing (Engine control) EC-32, EC-545
Vacuum pump(YD22DDTi) ............................. EM-163
Valve clearance(QR20DE-QR25DE) ................ EM-64
Valve clearance(YD22DDTi) ........................... EM-185
Valve guide ....................................................... EM-77
Valve guide(QR20DE-QR25DE) ....................... EM-77
Valve lifter(QR20DE-QR25DE) ......................... EM-56
Valve lifter(YD22DDTi) ................................... EM-183
Valve seat(QR20DE-QR25DE) ......................... EM-79
Valve seat(YD22DDTi) ................................... EM-219
Valve spring(QR20DE-QR25DE) ...................... EM-80
Variable induction air control system (VIAS) ... EC-457,
EC-897
Vehicle speed sensor (VSS) EC-276, EC-403, EC-709,
EC-807
VIAS - Wiring diagram ...................... EC-459, EC-899
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WARN - Wiring diagram .......................... DI-36
, DI-44
Warning chime .................................................... DI-56
Warning lamps .................................................... DI-35
Washer, front ..................................................... WW-4
Washer, rear .................................................... WW-14
Water control valve(QR20DE-QR25DE) ........... CO-23
Water pump(QR20DE-QR25DE) ...................... CO-21
Water pump(YD22DDTi) ................................... CO-43
Water temperature gauge ..................................... DI-4
Weatherstrip - See Exterior ............................... BL-21
Wheel alignment (front) .................................... FSU-6
Wheel alignment (rear) ..................................... RSU-6
Wheel balance ....................................... WT-4, MA-43
Wheel bearing (rear) ........................... RAX-6, RAX-10
Wheel hub (front) ............................................... FAX-7
Wheel hub (rear) ............................................. RAX-10
Wheel sensors (ABS) ..................................... BRC-46