NISSAN X-TRAIL 2001 Service Repair Manual

TROUBLE DIAGNOSIS
MTC-15
C
D
E
F
G
H
I
K
L
MA
B
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

MTC-16
TROUBLE DIAGNOSIS
4. CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND FAN RESISTOR
Disconnect fan resistor connector.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
5. CHECK FAN RESISTOR
Refer to MTC-17, "
Blower Fan Resistor" .
OK or NG
OK >> GO TO 6.
NG >> Replace fan resistor.
6. CHECK CIRCUIT CONTINUITY BETWEEN FAN RESISTOR AND HEATER CONTROL PANEL
Disconnect heater control panel connector.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7. CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND HEATER CONTROL PANEL
OK or NG
OK >> GO TO 8.
NG >> Repair harness or connector.
8. CHECK FAN SWITCH
Refer to MTC-17, "
Fan Switch" .
OK or NG
OK >> GO TO 9.
NG >> Replace fan switch.
Terminals
Continuity Fan resistor connector Blower motor connector
ConnectorTerminal
(Wire color)ConnectorTerminal
(Wire color)
M66 1 (L/B) M65 2 (L/B) Yes
RJIA0605E
Terminals
Continuity Fan resistor connector Heater control panel connector
ConnectorTerminal
(Wire color)ConnectorTerminal
(Wire color)
M66 2 (L/R) M54 16 (L/R)
Ye s M66 3 (L/Y) M54 15 (L/Y)
M66 4 (L/W) M54 14 (L/W)
RJIA0606E
Terminals
Continuity Blower motor connector Heater control panel connector
ConnectorTerminal
(Wire color)ConnectorTerminal (Wire
color)
M65 2 (L/B) M54 17 (L/B) Yes
RJIA0607E

TROUBLE DIAGNOSIS
MTC-17
C
D
E
F
G
H
I
K
L
MA
B
MTC
9.CHECK GROUND CIRCUIT
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
COMPONENT INSPECTION
Blower Motor
Confirm smooth rotation of the blower motor.
●Ensure that there are no foreign particles inside the intake unit.
Fan Switch
Check continuity between terminals at each switch position.
Blower Fan Resistor
Check continuity between terminals.
Terminals Continuity
ConnectorTe r m i n a l
(Wire color)
Ground Yes
M54 13 (B)
RJIA0608E
RJIA0609E
Switch position Connector Terminals Continuity
OFF
M5413 - 14, 15, 16, 17 No
1 13 - 14
Ye s 2 13 - 15
3 13 - 16
4 13 - 17
RJIA0610E
Terminals Continuity
M66 - 1M66 - 2
Ye s M66 - 3
M66 - 4
RJIA0611E

MTC-18
TROUBLE DIAGNOSIS
Insufficient Heating
EJS001FJ
SYMPTOM: Insufficient heating
INSPECTION FLOW
RJIA0612E

TROUBLE DIAGNOSIS
MTC-19
C
D
E
F
G
H
I
K
L
MA
B
MTC
*1 QR engine; CO-9, "Changing Engine
Coolant" .
YD engine; CO-29, "
Changing
Engine Coolant" .*2 QR engine; CO-12, "
Checking Radi-
ator Cap"
YD engine; CO-33, "Checking Radi-
ator Cap" .*3 QR25 engine; (WITH EURO-OBD)
EC-153, "
ENGINE COOLANT TEM-
PERATURE SENSOR" .
QR25 engine; (WITHOOUT EUR-
OBD)EC-527, "
ENGINE COOLANT
TEMPERATURE SENSOR" .
QR20 engine; (WITH EURO-OBD)
EC-885, "
ENGINE COOLANT TEM-
PERATURE SENSOR" .
QR20 engine; (WITHOUT EURO-
OBD)EC-1213, "
ENGINE COOLANT
TEMPERATURE SENSOR" .
YD engine; EC-1508, "
SYSTEM
DESCRIPTION" .
*4 QR engine; CO-9, "
Changing Engine
Coolant" .
YD engine; CO-29, "
Changing
Engine Coolant" .*5 MTC-7, "
Operational Check"*6MTC-3, "SYMPTOM TABLE"

MTC-20
CONTROLLER
CONTROLLER
PFP:27500
Removal and InstallationEJS001F7
1. Remove the mode control cable and air mix control cable from
heater unit.
2. Remove the cluster lid finisher.
3. Remove the fixing screw from heater control panel.
4. Remove the heater control panel, then remove the heater con-
trol panel connector.
Disassembly and AssemblyEJS001F8
RJIA0089E
RJIA0090E

BLOWER MOTOR
MTC-21
C
D
E
F
G
H
I
K
L
MA
B
MTC
BLOWER MOTORPFP:27226
Removal and InstallationEJS000XK
1. Remove the blower unit.
2. Separate the blower unit.
3. Remove the cooling hose, blower fan resistor and blower fan.
RJIA0054E
RJIA0092E

MTC-22
BLOWER FAN RESISTOR
BLOWER FAN RESISTOR
PFP:27150
Removal and InstallationEJS000XL
1. Remove the glove box cover.
2. Remove the blower fan resistor.
CAUTION:
Do not repair the thermal fuse of the fan resistor.
RJIA0093E

INTAKE DOOR MOTOR
MTC-23
C
D
E
F
G
H
I
K
L
MA
B
MTC
INTAKE DOOR MOTORPFP:27730
Removal and InstallationEJS000XM
1. Remove the blower unit.
2. Remove the intake door motor from blower unit.
RJIA0056E
RJIA0571E

MTC-24
HEATER UNIT
HEATER UNIT
PFP:27100
Removal and InstallationEJS001F9
REMOVAL
1. Drain coolant from cooling system.
2. Disconnect two heater hoses from heater core pipe.
3. Remove the instrument panel.
4. Remove the blower unit.
5. Remove the clips of vehicle harness from steering member.
6. Remove the instrument stay.
NOTE:
This illustration is for RHD models. The layout for LHD models is symmetrically opposite.
RJIA0060E
RJIA0061E
RJIA0062E