2005 NISSAN X-TRAIL check

ATC-24
LUBRICANT

LUBRICANTPFP:KLG00
Maintenance of Lubricant Quantity in CompressorEJS000TH
The lubricant in the compressor circulates through the system with the refrigerant. Add lubricant to compres-
sor when replacing any component or after a large refrigerant leakage occurred. It is important to maintain the
specified amount.
If lubricant quantity is not maintained properly, the following malfunctions may result:

Lack of lubricant: May lead to a seized compressor

Excessive lubricant: Inadequate cooling (thermal exchange interference)
LUBRICANT
LUBRICANT RETURN OPERATION
Adjust the lubricant quantity according to the test group shown below.
1. CHECK LUBRICANT RETURN OPERATION
Can lubricant return operation be performed?

A/C system works properly.

There is no evidence of a large amount of lubricant leakage.
CAUTION:
If excessive lubricant leakage is noted, do not perform the lubricant return operation.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. PERFORM LUBRICANT RETURN OPERATION, PROCEEDING AS FOLLOWS:
1. Start engine, and set the following conditions:
–Test condition
Engine speed: Idling to 1,200 rpm
A/C switch: ON
Blower speed: Max. position
Temp. control: Optional [Set so that intake air temperature is 25 to 30°C (77 to 86°F).]
Intake position: Recirculation (REC)
2. Perform lubricant return operation for about 10 minutes.
3. Stop engine.
>> GO TO 3.
3. CHECK REPLACEMENT PART
Should the compressor be replaced?
YES >> GO TO AT C - 2 5 , "LUBRICANT ADJUSTING PROCEDURE FOR COMPRESSOR REPLACE-
MENT" .
NO >> GO TO AT C - 2 5 , "
LUBRICANT ADJUSTING PROCEDURE FOR COMPONENTS REPLACE-
MENT EXCEPT COMPRESSOR" . With gasoline engine
(CWV-615M Compressor)With diesel engine
(DKV-11G Compressor)
Name Nissan A/C System Oil Type S Nissan A/C System Oil Type R
Part number KLH00-PAGS0 KLH00-PAGR0

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

AIR CONDITIONER CONTROL
ATC-27
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AIR CONDITIONER CONTROLPFP:27500
Description of Air Conditioner LAN Control SystemEJS000TI
The LAN (Local Area Network) system consists of auto amp., mode door motor, air mix door motor and intake
door motor.
A configuration of these components is shown in the diagram below.
System ConstructionEJS000TJ
A small network is constructed between the auto amp., air mix door motor, mode door motor and intake door
motor. The auto amp. and motors are connected by data transmission lines and motor power supply lines. The
LAN network is built through the ground circuits of each door motor.
Addresses, motor opening angle signals, motor stop signals and error checking messages are all transmitted
through the data transmission lines connecting the auto amp. and each door motor.
The following functions are contained in LCUs built into air mix door motor, mode door motor and intake door
motor.

Address

Motor opening angle signal

Data transmission

Motor stop and drive decision

Opening angle sensor (PBR function)

Comparison

Decision (Auto amp. indicated value and motor opening angle comparison)
OPERATION
The auto amp. receives data from each of the sensors. The auto amp. sends mode door, air mix door and
intake door opening angle data to the mode door motor LCU, air mix door motor LCU and intake door motor
LCU.
The mode door motor, air mix 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 is compared by the LCUs in each motor with the existing decision and opening angles. Subsequently,
HOT/COLD, DEFROST/VENT or FRESH/RECIRCULATION operation is selected. The new selection data is
returned to the auto amp.
RJIA0480E
RHA350H

ATC-28
AIR CONDITIONER CONTROL

TRANSMISSION DATA AND TRANSMISSION ORDER
Auto amp. data is transmitted consecutively to each of the door motors following the form shown in figure
below.
Start:
Initial compulsory signal sent to each of the door motors.
Address:
Data sent from the auto amp. is selected according to data-based decisions made by the air mix door motor,
mode door motor and intake door motor.
If the addresses are identical, the opening angle data and error check signals are received by the door motor
LCUs. The LCUs then make the appropriate error decision. If the opening angle data is usual, door control
begins.
If an error exists, the received data is rejected and corrected data received. Finally, door control is based upon
the corrected opening angle data.
Opening Angle:
Data that shows the indicated door opening angle of each door motor.
Error Check:
Procedure by which sent and received data is checked for errors. Error data is then compiled. The error check
prevents corrupted data from being used by the air mix door motor, mode door motor and intake door motor.
Error data can be related to the following symptoms.

Malfunction electrical frequency

Poor electrical connections

Signal leakage from transmission lines

Signal level fluctuation
RHA351H

ATC-34
TROUBLE DIAGNOSIS

TROUBLE DIAGNOSISPFP:00004
How to Perform Trouble Diagnoses for Quick and Accurate RepairEJS004GO
WORK FLOW
SYMPTOM TABLE
*1ATC-65, "Operational Check"
SHA900E
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System.ATC-67, "
Power
Supply and
Ground Circuit for
Auto Amp."
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor. (LAN)ATC-73, "Mode
Door Motor Cir-
cuit"Mode door motor does not operate normally.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor. (LAN)AT C - 7 6 , "
Air Mix
Door Motor Cir-
cuit"Air mix door motor does not operate nor-
mally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor. (LAN)AT C - 7 9 , "
Intake
Door Motor Cir-
cuit"Intake door motor does not operate normally.
Blower motor operation is malfunctioning.
Go to Trouble Diagnosis Procedure for Blower Motor.AT C - 8 2 , "
Blower
Motor Circuit"Blower motor operation is malfunctioning
under out of starting fan speed control.
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.AT C - 8 8 , "
Magnet
Clutch Circuit"
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.ATC-96, "Insuffi-
cient Cooling"
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.ATC-105, "Insuffi-
cient Heating"
Noise Go to Trouble Diagnosis Procedure for Noise.ATC-107, "Noise"
Self-diagnosis cannot be performed. Go to Trouble Diagnosis Procedure for Self-diagnosis.ATC-108, "Self-
Diagnosis"

TROUBLE DIAGNOSIS
ATC-59
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FUNCTION CONFIRMATION PROCEDURE
1. SET IN SELF-DIAGNOSTIC MODE (STEP-1 TO 4)
1. Set the fan control dial to OFF position.
2. Turn ignition switch ON.
3. Set in self-diagnostic mode as follows. Within 10 seconds after starting engine (ignition switch is turned
ON.), press A/C switch for at least 5 seconds.
CAUTION:
If battery voltage drops below 12V during diagnosis step-3, actuator speed becomes slower and as a
result, the system may generate an error even when operation is usual. To avoid this, start engine
before performing this diagnosis.
>> GO TO 2.
2. STEP-1: LEDS ARE CHECKED
Check intake and A/C switch LEDs illumination.
OK >> GO TO 3.
NG >> Refer to ATC-108, "
Self-Diagnosis" .
3. CHECK TO ADVANCE SELF-DIAGNOSIS STEP-2
1. Turn fan control dial to AUTO position.
CAUTION:
When switched to STEP-2, LED of REC position blinks for
approximately 25 seconds.
2. Advance to self-diagnosis STEP-2?
Check A/C switch LED illumination.
YES >> GO TO 4.
NO >> Replace controller.
4. CHECK TO RETURN SELF-DIAGNOSIS STEP-1
Turn fan control dial to OFF position.
Return to self
-diagnosis STEP-1?
YES >> GO TO 5.
NO >> Replace controller.
SJIA0389E
SJIA0390E

ATC-60
TROUBLE DIAGNOSIS

5. STEP-2: SENSOR CIRCUITS ARE CHECKED FOR OPEN OR SHORT CIRCUIT
1. Turn fan control dial to AUTO position.
2. Turn mode control dial to AUTO position.
CAUTION:
When switched to STEP-2, LED of REC position blinks for
approximately 25 seconds.
3. Check A/C switch LED is illuminate.
OK or NG
OK >> GO TO 6.
NG >> GO TO 9.
6. STEP-3: MODE DOOR AND INTAKE DOOR POSITIONS ARE CHECKED
1. Turn fan control dial to 1st–12th speed.
2. Check A/C switch LED is illuminate.
CAUTION:
When switched to STEP-3, LED of REC position blinks for
approximately 50 seconds.
OK or NG
OK >> GO TO 7.
NG >> GO TO 10.
7. STEP-4: OPERATION OF EACH ACTUATOR IS CHECKED
1. Turn fan control dial to 13th–25th speed.
2. Change operation status of air conditioner by changing mode control dial position.
>> GO TO 8.
SJIA0391E
SJIA0392E

TROUBLE DIAGNOSIS
ATC-61
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8. CHECK ACTUATORS
Refer to the following chart and confirm discharge air flow, air tem-
perature, blower motor voltage and compressor operation.
Checks must be made visually, by listening to any noise, or by touching air outlets with your hand, etc. for
improper operation.
*1: Step No. 41 to 46 are for differentiation and will not be displayed.
*2: FOOT position during automatic control. Refer to AT C - 6 3 , "
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER" .
OK or NG
OK >> 1. Turn ignition switch OFF or intake switch ON.
2. INSPECTION END
NG >>

Air outlet does not change.
Go to Mode Door Motor Circuit. Refer to AT C - 7 3 , "
Mode Door Motor Circuit" .

Intake door does not change.
Go to Intake Door Motor Circuit. Refer to AT C - 7 9 , "
Intake Door Motor Circuit" .

Blower motor operation is malfunctioning.
Go to Blower Motor Circuit. Refer to AT C - 8 2 , "
Blower Motor Circuit" .

Magnet clutch does not engage.
Go to Magnet Clutch Circuit. Refer to AT C - 8 8 , "
Magnet Clutch Circuit" .

Discharge air temperature does not change.
Go to Air Mix Door Motor Circuit. Refer to AT C - 7 6 , "
Air Mix Door Motor Circuit" .
RJIA0492E
Mode control dial position
STEP-No.
*1STEP-41 STEP-42 STEP-43 STEP-44 STEP-45 STEP-46
Mode control dial posi-
tionAUTO VENT B/LFOOT or
FOOT2D/F or D/F2 DEF
Mode door position VENT VENT B/L
FOOT
*2D/F DEF
Intake door position REC REC REC FRE FRE FRE
Air mix door position FULL COLD FULL COLD FULL COLD FULL HOT FULL HOT FULL HOT
Blower motor voltage Approx. 4.5V Approx. 10.5V Approx. 8.5V Approx. 8.5V Approx. 8.5V Approx. 12V
Compressor ON ON OFF OFF ON ON