NISSAN X-TRAIL 2001 Service Repair Manual

TROUBLE DIAGNOSIS
ATC-105
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AT C
Sunload Sensor CircuitEJS001HD
COMPONENT DESCRIPTION
The sunload sensor is located on the left defroster grille. It detects
sunload entering through windshield by means of a photo diode. The
sensor converts the sunload into a current value which is then input
into the auto amplifier.
SUNLOAD INPUT PROCESS
The auto amp. also includes a processing circuit which averages the variations in detected sunload over a
period of time. This prevents drastic swings in the ATC system operation due to small or quick variations in
detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the sun-load sensor will vary whenever the trees obstruct the sunlight. The processing circuit
averages the detected sun-load over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the ATC system operation. On the other hand, shortly
after entering a long tunnel, the system will recognize the change in sun-load, and the system will react
accordingly.
DIAGNOSTIC PROCEDURE
SYMPTOM: Sunload sensor circuit is open or shorted. (25 or -25) is
indicated on auto amp. as a result of conducting Self-diagnosis
STEP 2.)
1.CHECK SUN-LOAD SENSOR CIRCUIT BETWEEN SUNLOAD SENSOR AND GROUND
Disconnect sunload sensor harness connector.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
RJIA0050E
SHA601F
Te r m i n a l s
Voltage (+)
(-)
ConnectorTe r m i n a l ( W i r e
color)
M74 1 (OR) Ground Approx. 5V
RJIA0563E

ATC-106
TROUBLE DIAGNOSIS
2. CHECK SUNLOAD SENSOR CIRCUIT BETWEEN SUNLOAD SENSOR AND AUTO AMP. (LCU)
Disconnect auto amp. (LCU) harness connector.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK SUNLOAD SENSOR.
Refer to ATC-107, "
Sunload Sensor" .
OK or NG
OK >> 1. Replace auto amp. (LCU).
2. Go to self-diagnosis AT C - 4 7 , "
PROCEDURE" and perform self-diagnosis STEP-2. Confirm
that code No. 20 is displayed.
NG >> 1. Replace sunload sensor.
2. Go to self-diagnosis AT C - 4 7 , "
PROCEDURE" and perform self-diagnosis STEP-2. Confirm
that code No. 20 is displayed.
4. CHECK SUNLOAD SENSOR CIRCUIT BETWEEN SUNLOAD SENSOR AND AUTO AMP. (LCU)
Disconnect auto amp. (LCU) harness connector.
OK or NG
OK >> 1. Replace auto amp.
2. Go to self-diagnosis AT C - 4 7 , "
PROCEDURE" and
perform self-diagnosis STEP-2. Confirm that code
No. 20 is displayed.
NG >> Repair harness or connector.
Terminals
Continuity
ConnectorTerminal (Wire
color)ConnectorTerminal (Wire
color)
M74 2 (B/Y) M53 24 (B/Y) Yes
RJIA0564E
Terminals
Continuity
ConnectorTerminal (Wire
color)ConnectorTerminal
(Wirecolor)
M74 1 (OR) M52 10(OR) Yes
RJIA0565E

TROUBLE DIAGNOSIS
ATC-107
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AT C
COMPONENT INSPECTION
Sunload Sensor
Measure voltage between auto amp. terminal 10 and ground.
If NG, replace auto amp.
●When checking sunload sensor, select a place where sun shines directly on it.
RJIA0566E
SHA930E

ATC-108
TROUBLE DIAGNOSIS
Intake Sensor Circuit
EJS001HE
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on the heater & cooling unit. It converts
temperature of air after it passes through the evaporator into a resis-
tance value which is then input to the auto amp.
After disconnecting intake sensor harness connector, measure resis-
tance between terminals 1 and 2 at sensor harness side, using the
table below.
If NG, replace intake sensor.
DIAGNOSTIC PROCEDURE
SYMPTOM: Intake sensor circuit is open or shorted. (24 or -24) is
indicated on auto amp. as a result of conducting Self-diagnosis
STEP 2.)
Temperature °C (°F)Resistance kΩ
With gasoline engine With diesel engine
-15 (5) 12.34 18.63
-10 (14) 9.62 14.15
-5 (23) 7.56 10.86
0 (32) 6.00 8.41
5 (41) 4.80 6.58
10 (50) 3.87 5.19
15 (59) 3.15 4.12
20 (68) 2.57 3.30
25 (77) 2.12 2.67
30 (86) 1.76 2.17
35 (95) 1.47 1.78
40 (104) 1.23 1.46
45 (113) 1.04 1.21
RJIA0051E
RJIA0567E

TROUBLE DIAGNOSIS
ATC-109
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AT C
1.CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND BODY GROUND
Disconnect intake sensor harness connector.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND AUTO AMP. (LCU)
Disconnect auto amp. (LCU) harness connector.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
Engine modelTerminals
Vo l ta g e (+)
(-)
ConnectorTe r m i n a l ( W i r e
color)
With gasoline
engineM68 1 (BR/Y)
Ground Approx. 5V
With diesel engine M69 1 (BR/Y)
RJIA0568E
Engine modelTerminals
Continuity Intake sensor Auto amp.
ConnectorTe r m i n a l ( W i r e
color)ConnectorTerminal (Wire
color)
With gasoline
engineM68 2 (B/Y)
M5324 (B/Y)
Ye s
With diesel engine M69 2 (B/Y) 24 (B/Y)
RJIA0569E

ATC-110
TROUBLE DIAGNOSIS
3. CHECK INTAKE SENSOR
Refer to ATC-108, "
Intake Sensor"
OK or NG
OK >> 1. Replace auto amp.
2. Go to self-diagnosis AT C - 4 7 , "
PROCEDURE" and perform self-diagnosis STEP-2. Confirm
that code No. 20 is displayed.
NG >> 1. Replace intake sensor.
2. Go to self-diagnosis AT C - 4 7 , "
PROCEDURE" and perform self-diagnosis STEP-2. Confirm
that code No. 20 is displayed.
4. CHECK INTAKE SENSOR CIRCUIT BETWEEN INTAKE SENSOR AND AUTO AMP. (LCU)
Disconnect auto amp. (LCU) harness connector.
OK or NG
OK >> 1. Replace auto amp.
2. Go to self-diagnosis AT C - 4 7 , "
PROCEDURE" and perform self-diagnosis STEP-2. Confirm
that code No. 20 is displayed.
NG >> Repair harness or connector.
Engine modelTerminals
Continuity Intake sensor Auto amp.
Connector Terminal (Wire
colorConnectorTerminal (Wire
color)
With gasoline
engineM68 1 (BR/Y)
M5325 (BR/Y)
Ye s
With diesel engine M69 1 (BR/Y) 25 (BR/Y)
RJIA0570E

CONTROLLER
ATC-111
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AT C
CONTROLLERPFP:27500
Removal and InstallationEJS001F2
1. Remove the audio assembly.
2. Remove the controller.
Disassembly and AssemblyEJS001F3
RJIA0046E
*1 REC knob *2 FRE knob *3 OFF knob
*4 FAN knob *5 MODE knob *6 DEF knob
*7 A/C knob *8 AUTO knob *9 TEMP knob
*10 A/C panel *11 Rear REC knob *12 Rear FRE knob
*13 Illumination plate *14 Rear OFF knob *15 Rear FAN knob
*16 Rear MODE knob *17 Rear DEF knob *18 Rear A/C knob
-19 Rear AUTO knob *20 Circuit board assembly *21 Long bulb
*22 PCB case *23 Screw *24 Short bulb
RJIA0047J

ATC-112
AMBIENT SENSOR
AMBIENT SENSOR
PFP:27722
Removal and InstallationEJS000UH
1. Remove the front grille.
2. Remove the ambient sensor.
RJIA0048E

IN-VEHICLE SENSOR
ATC-113
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AT C
IN-VEHICLE SENSORPFP:27720
Removal and InstallationEJS000UI
1. Remove the cluster lid A.
2. Remove the in-vehicle sensor.
RJIA0049E

ATC-114
SUNLOAD SENSOR
SUNLOAD SENSOR
PFP:27721
Removal and InstallationEJS000UJ
1. Remove the sunload sensor garnish.
2. Remove the sunload sensor.
RJIA0050E