2003 NISSAN X-TRAIL clutch

TROUBLE DIAGNOSIS
ATC-65
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Operational CheckEJS004GU
The purpose of the operational check is to confirm that the system operates properly.
CHECKING BLOWER
1. Turn fan control dial to 1st speed. Blower should operate on low
speed.
2. Turn fan control dial to 2nd speed, and continue checking
blower speed until all speeds are checked.
3. Leave blower on Max. speed.
If NG, go to trouble diagnosis procedure for AT C - 8 2 , "
Blower Motor
Circuit" .
If OK, continue the check.
CHECKING DISCHARGE AIR
1. Turn mode control dial to each position.
2. Confirm that discharge air comes out according to the air distri-
bution table. Refer to AT C - 3 2 , "
Discharge Air Flow" .
Intake door position is checked in the next step.
If NG, go to trouble diagnosis procedure for AT C - 7 3 , "
Mode Door
Motor Circuit" .
If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual
inspection) and intake door position is at FRESH when the D/F, D/F2
or DEF position is selected.
CHECKING INTAKE DOOR
1. Press intake switch. Recirculation indicator should illuminate.
2. Press intake switch again. Fresh indicator should illuminate.
3. Listen for intake door position change (you should hear blower
sound change slightly).
If NG, go to trouble diagnosis procedure for AT C - 7 9 , "
Intake Door
Motor Circuit" .
If OK, continue the check.Conditions : Engine running at usual operating temperature
SJIA0395E
SJIA0396E
RJIA0492E
SJIA0397E

ATC-66
TROUBLE DIAGNOSIS

CHECKING TEMPERATURE DECREASE
1. Turn temperature control dial until 18°C.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for AT C - 9 6 , "
Insufficient
Cooling" .
If OK, continue the check.
CHECKING TEMPERATURE INCREASE
1. Turn temperature control dial until 32°C.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for ATC-105, "
Insufficient
Heating" .
If OK, continue the check.
CHECKING A/C SWITCH
1. Turn fan control dial to AUTO position.
2. Press A/C switch.

Confirm that the compressor clutch engages (sound or visual
inspection). (Discharge air and blower speed will depend on
ambient, in-vehicle, and set temperatures.)
If NG, go to AT C - 6 7 , "
Power Supply and Ground Circuit for Auto
Amp." , then if necessary, trouble diagnosis procedure for AT C - 8 8 ,
"Magnet Clutch Circuit" .
If all operational checks are OK (symptom cannot be duplicated), go
to Incident Simulation Tests in GI-23, "
How to Perform Efficient Diag-
nosis for an Electrical Incident" and perform tests as outlined to sim-
ulate driving conditions environment. If symptom appears, refer to
AT C - 3 4 , "
SYMPTOM TABLE" and perform applicable trouble diagnosis procedures.
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SJIA0399E
SJIA0400E

ATC-88
TROUBLE DIAGNOSIS

Magnet Clutch CircuitEJS004YO
SYMPTOM: Magnet clutch does not engage.
INSPECTION FLOW
*1AT C - 6 5 , "Operational Check".*2ATC-59, "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 1.*3ATC-59, "
FUNCTION CONFIRMA-
TION PROCEDURE", see No. 5 to
7.
*4ATC-109, "
Ambient Sensor Circuit".*5ATC-117, "Intake Sensor Circuit".*6ATC-34, "SYMPTOM TABLE".
*7AT C - 5 9 , "
FUNCTION CONFIRMA-
TION PROCEDURE", see No. 9.*8ATC-89, "
DIAGNOSTIC PROCE-
DURE FOR MAGNET CLUTCH".*9ATC-102, "
TROUBLE DIAGNOSIS
FOR UNUSUAL PRESSURE".
RJIA3103E

TROUBLE DIAGNOSIS
ATC-89
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SYSTEM DESCRIPTION
Auto amp. controls compressor operation by ambient temperature, intake air temperature (with diesel engine)
and signal from ECM.
Low Temperature Protection Control (With Gasoline Engine)
Auto amp. will turn compressor ON or OFF as determined by a sig-
nal detected by ambient sensor.
When ambient temperatures are higher than −2°C (28°F), compres-
sor turns ON. Compressor turns OFF when ambient temperatures
are lower than −5°C (23°F).
Evaporator Freeze Protection Control (With Diesel Engine)
Auto amp. will turn compressor ON or OFF as determined by a sig-
nal detected by intake sensor.
When intake air temperatures are higher than 4°C (39°F), compres-
sor turns ON. Compressor turns OFF when intake temperatures are
lower than 2.5°C (37°F).
DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage when A/C switch is ON.
RHA094GB
RHA094GD
RJIA2835E

ATC-90
TROUBLE DIAGNOSIS

1. CHECK POWER SUPPLY FOR COMPRESSOR
1. Disconnect compressor connector.
2. Start the engine.
3. Turn fan control dial to AUTO position.
4. Press A/C switch.
5. Check voltage between compressor harness connector E34 ter-
minal 1 (L/R) and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK MAGNET CLUTCH CIRCUIT
Check for operation sound when applying battery voltage direct cur-
rent to terminal.
OK or NG
OK >> 1. Repair harness or connector.
2. Go to self-diagnosis procedure AT C - 5 9 , "
FUNCTION
CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-4. Confirm that magnet clutch opera-
tion is usual.
NG >> 1. Replace magnet clutch. Refer to ATC-146, "
Removal
and Installation of Compressor Clutch" .
2. Go to self-diagnosis procedure AT C - 5 9 , "
FUNCTION
CONFIRMATION PROCEDURE" and perform self-diagnosis STEP-4. Confirm that magnet
clutch operation is usual.
3. CHECK CIRCUIT CONTINUITY BETWEEN A/C RELAY AND COMPRESSOR
1. Turn ignition switch OFF.
2. Disconnect A/C relay connector.
3. Check continuity between A/C relay harness connector E5 ter-
minal 5 (L/R) and compressor harness connector E34 terminal 1
(L/R).
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.1 – Ground : Battery voltage
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5 – 1 : Continuity should exist.
RJIA2870E

TROUBLE DIAGNOSIS
ATC-91
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4. CHECK POWER SUPPLY FOR A/C RELAY
1. Turn ignition switch ON.
2. Check voltage between A/C relay harness connector E5 termi-
nal 1 (BR/Y), 3 (BR/Y) and ground.
OK or NG
OK >> GO TO 5.
NG >> Check power supply circuit and 10A fuse [No. 15
located in the fuse block (J/B)]. Refer to PG-75, "
FUSE
BLOCK - JUNCTION BOX (J/B)" .

If OK, check harness for open circuit. Repair or replace if necessary.

If NG, replace fuse and check harness for short circuit. Repair or replace if necessary.
5. CHECK A/C RELAY AFTER DISCONNECTING IT
Refer to AT C - 9 4 , "
A/C Relay" .
OK or NG
OK >> GO TO 6.
NG >> 1. Replace A/C relay.
2. Go to self-diagnosis procedure AT C - 5 9 , "
FUNCTION CONFIRMATION PROCEDURE" and
perform self-diagnosis STEP-4. Confirm that magnet clutch operation is usual.
6. CHECK COIL SIDE CIRCUIT OF A/C RELAY
1. Turn ignition switch OFF.
2. Reconnect A/C relay connector.
3. Start the engine.
4. Check voltage between ECM harness connector F43 terminal
105 (BR/W) or 19 (L) and ground.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7. CHECK AMBIENT SENSOR
Refer to ATC-109, "
Ambient Sensor Circuit" .
OK or NG
OK >>
With gasoline engine: GO TO 8.

With diesel engine: GO TO 14.
NG >> Repair or replace the malfunctioning part(s).
8. CHECK REFRIGERANT PRESSURE SENSOR (QR ENGINE)
Refer to AT C - 9 4 , "
Refrigerant Pressure Sensor (With Gasoline Engine)" .
OK or NG
OK >> GO TO 9.
NG >> Repair or replace the malfunctioning part(s).1 – Ground : Battery voltage
3 – Ground : Battery voltage
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105 – Ground (Gasoline engine) : Battery voltage
19 – Ground (Diesel engine) : Battery voltage
RJIA2836E

TROUBLE DIAGNOSIS
ATC-97
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*10ATC-82, "Blower Motor Circuit".*11AT C - 8 8 , "Magnet Clutch Circuit". *12 QR engine; (WITH EURO-OBD) EC-
348, "System Description" .
QR engine; (WITHOUT EURO-OBD)
EC-700, "
System Description" .
YD engine; (WITH EURO-OBD) EC-
1011, "System Description" .
YD engine; (WITHOUT EURO-OBD)
EC-1320, "
System Description" .
*13ATC-98, "
PERFORMANCE TEST
DIAGNOSIS".

TROUBLE DIAGNOSIS
ATC-99
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*1ATC-146, "Removal and Installation
of Compressor Clutch".*2 AT C - 8 2 , "
Blower Motor Circuit" . *3 QR engine; EM-13, "Checking Drive
Belts" or YD engine; EM-131,
"Checking Drive Belts" .
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