2001 NISSAN X-TRAIL ignition

TROUBLE DIAGNOSIS
ATC-75
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AT C
1.CHECK POWER SUPPLY FOR BLOWER MOTOR
Disconnect blower motor harness connector.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 15A fuses [Nos. 19 and
24, located in the fuse block (J/B)]. Refer toPG-3, "
BAT-
TERY POWER SUPPLY — IGNITION SW. IN ANY POSITION" .
●If OK, check for open circuit in wiring harness. Repair or replace as necessary.
●If NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary.
2.CHECK FAN FEED BACK CIRCUIT
Disconnect auto amp. harness connector.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK BLOWER MOTOR
Refer to ATC-77, "
COMPONENT INSPECTION" .
OK or NG
OK >> GO TO 4.
NG >> Replace blower motor.
4.CHECK POWER SUPPLY FOR FAN CONTROL AMP.
1. Reconnect blower motor connector and auto amp. connector.
2. Disconnect fan control amp. harness connector.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
Te r m i n a l s
Voltage (+)
(-)
ConnectorTerminal (Wire
color)
M65 1 (L/W) Ground Approx. 12V
RJIA0524E
Te r m i n a l s
Voltage (+)
(-)
ConnectorTe r m i n a l ( W i r e
color)
M52 20 (L/W) Ground Approx. 12V
RJIA0525E
Terminals
Vo lta g e (+)
(-)
ConnectorTerminal (Wire
color)
M67 3 (R) Ground Approx. 12V
RJIA0526E

ATC-80
TROUBLE DIAGNOSIS
1. CHECK POWER SUPPLY FOR COMPRESSOR
Disconnect compressor harness connector.
OK or NG
OK >> Check magnet clutch coil.
1. If NG, replace magnet clutch. Refer to ATC-135,
"Removal and Installation for Compressor Clutch" .
2. Go to self-diagnosis AT C - 4 7 , "
PROCEDURE" and perform self-diagnosis STEP-4. Confirm
that magnet clutch operation is normal.
NG >> Disconnect A/C relay. And GO TO 2.
2. CHECK CIRCUIT CONTINUITY BETWEEN A/C RELAY AND COMPRESSOR
OK or NG
OK >> Check harness for short. And GO TO 3.
NG >> Repair harness or connector.
3. CHECK POWER SUPPLY FOR A/C RELAY
Disconnect A/C relay.
OK or NG
OK >> GO TO 4.
NG >> Check power supply circuit and 10A fuse [No.15 located
in the fuse block (J/B)]. Refer to PG-3, "
BATTERY POWER SUPPLY — IGNITION SW. IN ANY
POSITION" .
●If OK, check for open circuit in wiring harness. Repair or replace as necessary.
●If NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary.
Te r m i n a l s
Voltag e (+)
(-)
ConnectorTe r m i n a l ( W i r e
color
E34 1 (L/R) Ground Battery voltage
RJIA0295E
Terminals
Continuity A/C relay Compressor
ConnectorTerminal
(Wire color)ConnectorTerminal
(Wire color)
E5 5 (L/R) E34 1 (L/R) Yes
RJIA0536E
Te r m i n a l s
Voltage (+)
(-)
ConnectorTe r m i n a l ( W i r e
color)
E5 1 (BR/Y)
Ground Battery voltage
E5 3 (BR/Y)
RJIA0537E

MTC-12
TROUBLE DIAGNOSIS
DIAGNOSTIC PROCEDURE
SYMPTOM: Intake door does not change.
1. CHECK POWER SUPPLY FOR HEATER CONTROL PANEL
Disconnect heater control panel harness connector.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 10 A fuse [No. 15,
located in the fuse block (J/B)]. Refer to PG-3, "
BAT-
TERY POWER SUPPLY — IGNITION SW. IN ANY POSITION" .
●If OK, check for open circuit in wiring harness. Repair or replace as necessary.
●If NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary.
2. CHECK BODY GROUND CIRCUIT FOR HEATER CONTROL PANEL
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK RECIRCULATION SWITCH CIRCUIT
OK or NG
OK >> GO TO 4.
NG >> Replace heater control panel.
RJIA0595E
Terminals
Voltage (+)
(-)
ConnectorTerminal
(Wire color)
M55 1 (BR/Y) Ground Approx. 12V
RJIA0596E
Terminals
Continuity
ConnectorTerminal
(Wire color)-
M55 5 (B) Ground Yes
RJIA0597E
Terminals
Continuity
ConnectorTerminal
(Wire color)Connector Terminal
(Wire color)
M55 1 (BR/Y) M55 5 (B) Yes
RJIA0598E

TROUBLE DIAGNOSIS
MTC-15
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MTC
DIAGNOSTIC PROCEDURE
SYMPTOM: Blower motor operation is malfunctioning.
1.CHECK POWER SUPPLY FOR BLOWER MOTOR
Disconnect blower motor harness connector.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 15A fuses [Nos. 19 and
24, located in the fuse block (J/B)]. Refer toPG-3, "
BAT-
TERY POWER SUPPLY — IGNITION SW. IN ANY POSITION" .
●If OK, check for open circuit in wiring harness. Repair or replace as necessary.
●If NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary.
2.CHECK BODY GROUND CIRCUIT FOR BLOWER MOTOR
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3.CHECK BLOWER MOTOR
Refer to MTC-14, "
Blower Motor Circuit" .
OK or NG
OK >> INSPECTION END
NG >> Replace blower motor.
RJIA0602E
Te r m i n a l s
Vo lta g e (+)
(-)
ConnectorTerminal
(Wire color)
M65 1 (L/W) Ground Approx. 12V
RJIA0603E
Terminals Condition Continuity
ConnectorTerminal
(Wire color)
Ground FAN SW: ON Yes
M65 2 (B)
RJIA0604E

SC-12
CHARGING SYSTEM
CHARGING SYSTEM
PFP:00011
System Description EKS00316
The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Power is supplied at all times
●to alternator terminal 4 (S)
●through 10A fuse (No.34, located in the fuse and fusible link box)
●to alternator terminal B
●through 120A (Gasoline engine models) or 100A (Diesel engine models) fusible link (letter A, located in
the fuse and fusible link box).
Terminal B supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is
controlled by the IC regulator at terminal 4 (S) detecting the input voltage. The charging circuit is protected by
the 120A (Gasoline engine models) or 100A (Diesel engine models) link.
The alternator is grounded to the engine block.
With the ignition switch in the ON or START position, power is supplied
●through 10A fuse [No. 11, located in the fuse block (J/B)]
●to combination meter terminal 46 (LHD models) or terminal 59 (RHD models) for the charge warning
lamp.
Ground is supplied with power and ground supplied
●to terminal 64 (LHD models) or terminal 54 ( RHD models) of the combination meter
●through terminal 3 (L) of the alternator
●to terminal E of the alternator
●through body ground E30.
The charge warning lamp will illuminate. When the alternator is providing sufficient voltage with the engine
running, the ground is opened and the charge warning lamp will go off.
If the charge warning lamp illuminates with the engine running, a malfunction is indicated.

SC-20
STARTING SYSTEM
STARTING SYSTEM
PFP:00011
System Description EKS0031F
M/T MODELS
Power is supplied at all times
●through 30A fusible link (letter J, located in the fuse and fusible link box)
●to ignition switch terminal 1.
With the ignition switch in the START position, power is supplied
●from ignition switch terminal 5
●to starter motor harness connector terminal 1.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.
A/T MODELS
Power is supplied at all times
●through 30A fusible link (letter J, located in the fuse and fusible link box)
●to ignition switch terminal 1.
With the ignition switch in the START position, power is supplied
●from ignition switch terminal 5
●to park/neutral position relay terminal 5.
With the ignition switch in the ON or START position, power is supplied
●through 10A fuse [No,13 located in the fuse block (J/B)]
●to park/neutral position relay terminal 1.
With the selector lever in the P or N position, ground is supplied
●to park/neutral position relay terminal 2
●through the park/neutral position switch terminals 1 and 2,and
●through body grounds F9 and F10.
Then park/neutral position relay is energized and power is supplied
●from park/neutral position relay terminal 3
●to starter motor harness connector terminal 1.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.

HEADLAMP - DAYTIME LIGHT SYSTEM -
LT-9
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LT
HEADLAMP - DAYTIME LIGHT SYSTEM -PFP:26010
System DescriptionEKS003BB
DESCRIPTION
The headlamp system on vehicles for North Europe contains a daytime light control unit. The unit activates the
following whenever the engine is running with the lighting switch in the OFF position:
●Low beam headlamps
●Parking, license, tail and illumination lamps
Power is supplied at all times
●through 10A fuse (No. 31, located in the fuse and fusible link box)
●to daytime light control unit terminal 1 and
●to lighting switch terminal 11.
Power is also supplied at all times
●through 15A fuse (No. 41, located in the fuse and fusible link box)
●to daytime light control unit terminal 3 and
●to lighting switch terminal 5.
Power is also supplied at all times
●through 15A fuse (No. 40, located in the fuse and fusible link box)
●to daytime light control unit terminal 2 and
●to lighting switch terminal 8.
With the ignition switch in the ON or START position, power is supplied
●through 10A fuse [No. 13, located in the fuse block (J/B)]
●to daytime light control unit terminal 7.
With the ignition switch in the START position, power is supplied
●through 10A fuse [No. 7, located in the fuse block (J/B)]
●to daytime light control unit terminal 6.
HEADLAMP OPERATION (DAYTIME LIGHT CANCEL OPERATION)
When the lighting switch is turned to the 1st or 2nd position, power is supplied
●through lighting switch terminal 12,
●to daytime light control unit terminal 11.
Then daytime light will be canceled. And the lighting system operation will be the same as no daytime light
system.
DAYTIME LIGHT OPERATION
With the engine running and the lighting switch in the OFF position, power is supplied
●from alternator terminal 3
●to daytime light control unit terminal 8,
●through daytime light control unit terminal 5
●to terminal 3 of headlamp LH,
●through daytime light control unit terminal 4
●to terminal 3 of headlamp RH and
●through daytime light control unit terminal 10
●to tail lamp and illumination.
Ground is supplied to terminal 2 of each headlamp through body grounds E24 and E50.
SMA for models with roof mounted driving lamp

LT-14
HEADLAMP - DAYTIME LIGHT SYSTEM -
Trouble Diagnoses
EKS003CO
DAYTIME LIGHT CONTROL UNIT INSPECTION TABLE
*: Daytime light operating: Lighting switch in “OFF” position with engine running.
Bulb ReplacementEKS003CP
Refer toLT-4, "HEADLAMP"
Aiming AdjustmentEKS003BE
Refer toLT-4, "HEADLAMP"
Terminal
No.WIRE
COLORConnectionsINPUT (I)/
OUTPUT
(O)Operated conditionVoltage (V)
(Approximate val-
ues)
1 G/WPower source for illumi-
nation & tail lamp—— 12
2LGPower source for head-
lamp LH—— 12
3R/WPower source for head-
lamp RH—— 12
4 G/Y Headlamp RH OON (daytime light operating*) 12
OFF 0
5 Y/G Headlamp LH OON (daytime light operating*) 12
OFF 0
6 B/Y Start signal I Ignition switchSTART 12
ON, ACC or OFF 0
7 BR IGN power supply — Ignition switchON or START 12
ACC or OFF 0
8 Y/R Alternator “L” terminal I EngineRunning 12
Stopped 0
9 B Ground — — —
10 R/L Illumination & tail lamp OON (daytime light operating*) 12
OFF 0
11 R/L Lighting switch I1ST·2ND position 12
OFF 0