NISSAN X-TRAIL 2005 Service Repair Manual

TROUBLE DIAGNOSIS
MTC-17
C
D
E
F
G
H
I
K
L
MA
B
MTC

4. CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND FAN RESISTOR
1. Disconnect fan resistor connector.
2. Check continuity between fan resistor harness connector M66
terminal 1 (L/B) and blower motor harness connector M65 termi-
nal 2 (L/B).
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK FAN RESISTOR
Refer to MTC-18, "
Fan Resistor" .
OK or NG
OK >> GO TO 6.
NG >> Replace fan resistor.
6. CHECK CIRCUIT CONTINUITY BETWEEN FAN RESISTOR AND HEATER CONTROL PANEL
1. Disconnect heater control panel connector.
2. Check continuity between fan resistor harness connector M66
terminal 2 (L/R), 3 (L/Y) or 4 (L/W) and heater control panel har-
ness connector M54 terminal 14 (L/W), 15 (L/Y) or 16 (L/R).
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7. CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND HEATER CONTROL PANEL
Check continuity between blower motor harness connector M65 ter-
minal 2 (L/B) and heater control panel harness connector M54 termi-
nal 17 (L/B).
OK or NG
OK >> GO TO 8.
NG >> Repair harness or connector.
8. CHECK FAN SWITCH
Refer to MTC-18, "
Fan Switch" .
OK or NG
OK >> GO TO 9.
NG >> Replace fan switch.1 – 2 : Continuity should exist.
RJIA2931E
2 – 16 : Continuity should exist.
3 – 15 : Continuity should exist.
4 – 14 : Continuity should exist.
RJIA2932E
2 – 17 : Continuity should exist.
RJIA2933E

MTC-18
TROUBLE DIAGNOSIS

9. CHECK GROUND CIRCUIT
Check continuity between heater control panel harness connector
M54 terminal 13 (B) and ground.
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 heater control connector M54 terminals at
each switch position.
Fan Resistor
Check resistance between fan resister connector M66 terminals.13 – Ground : Continuity should exist.
RJIA2934E
RJIA0609E
Switch position Terminals Continuity
OFF 13 - 14, 15, 16, 17 No
1 13 - 14
Ye s 2 13 - 15
3 13 - 16
4 13 - 17
RJIA0610E
TerminalsResistance (Ω)
LHD RHD
12 0.25 - 0.31 0.28 - 0.34
3 0.58 - 0.70 0.79 - 0.97
4 1.33 - 1.63 1.84 - 2.24
RJIA0611E

TROUBLE DIAGNOSIS
MTC-19
C
D
E
F
G
H
I
K
L
MA
B
MTC

Insufficient HeatingEJS001FJ
SYMPTOM: Insufficient heating
INSPECTION FLOW
SJIA0482E

MTC-20
TROUBLE DIAGNOSIS

*1 QR engine; CO-9, "Changing Engine
Coolant" or YD engine; CO-32,
"Changing Engine Coolant" .*2 QR engine; CO-13, "
Checking Radi-
ator Cap" or YD engine; CO-36,
"Checking Radiator Cap" .*3 QR engine; (WITH EURO-OBD) EC-
165, "DTC P0117, P0118 ECT SEN-
SOR" .
QR engine; (WITHOUT EURO-OBD)
EC-652, "
DTC P0117, P0118 ECT
SENSOR" .
YD engine; (WITH EURO-OBD) EC-
1093, "DTC P0117, P0118 ECT
SENSOR" .
YD engine; (WITHOUT EURO-OBD)
EC-1449, "
DTC P0117, P0118 ECT
SENSOR" .
*4 QR engine; CO-9, "
Changing Engine
Coolant" or YD engine; CO-32,
"Changing Engine Coolant" .*5 MTC-7, "
Operational Check" .*6MTC-3, "SYMPTOM TABLE".

CONTROLLER
MTC-21
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MA
B
MTC

CONTROLLERPFP:27500
Removal and InstallationEJS004HA
REMOVAL
1. Remove mode door cable and air mix door cable from heater unit. Refer to MTC-31, "MODE DOOR" and
MTC-32, "
AIR MIX DOOR" .
2. Remove cluster lid C. Refer to IP-11, "
Removal and Installation" .
3. Remove mounting screws from heater control panel.
4. Remove heater control panel, and then remove heater control
panel connector.
INSTALLATION
Installation is basically the reverse order of removal.
Disassembly and AssemblyEJS004HB
RJIA0089E
1. Mode door cable 2. Clamp 3. Case assembly
4. Heater panel 5. Finisher 6. Dial
7. Air mix door cable 8. Fan switch 9. Bulb
RJIA3153E

MTC-22
BLOWER UNIT

BLOWER UNITPFP:27200
Removal and InstallationEJS004YB
REMOVAL
1. Remove glove box assembly.
2. Remove glove box cover, instrument passenger lower panel and instrument reinforcement. Refer to IP-11,
"Removal and Installation" .
3. Remove ECM with ECM bracket attached.
4. Remove instrument panel mounting screw.
5. Remove blower unit mounting bolt and screw.
6. Disconnect blower motor connector and fan resistor connector.
7. Disconnect intake door motor connector and harness clips.
8. Remove blower unit.
CAUTION:
Slide the blower unit toward the right, remove location pins
(2 pieces), then move it downward.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:

Make sure location pins (2 pieces) are securely installed.
RJIA3161E

BLOWER UNIT
MTC-23
C
D
E
F
G
H
I
K
L
MA
B
MTC

Disassembly and AssemblyEJS004YC
NOTE:
This illustration is for LHD models. The layout for RHD models is symmetrically opposite.
CAUTION:
If retaining tabs are damaged while disassembling blower unit,
use 9 screws (27111-2Y000) to assemble blower unit.
1. Upper case 2 2. Filter cover 3. Fan resistor
4. Screw 5. Blower fan motor assembly 6. Washer
7. Cooling hose 8. Intake door motor 9. Motor bracket
10. Intake door link 11. Intake door lever 2 12. Upper case 1
13. Intake door 2 14. Intake door 1 15. Nut
16. Blower fan 17. Bell mouth 18. Intake door lever 1
SJIA0483E
RJIA3155E

MTC-24
BLOWER MOTOR

BLOWER MOTORPFP:27226
Removal and InstallationEJS004HD
REMOVAL
1. Remove blower unit. Refer to ATC-125, "BLOWER UNIT" .
2. Separate blower unit.
3. Remove cooling hose, fan resistor and blower fan.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
If retaining tabs are damaged while disassembling blower unit,
use 9 screws (27111-2Y000) to assemble blower unit.
RJIA0054E
RJIA0092E
RJIA0097E

BLOWER FAN RESISTOR
MTC-25
C
D
E
F
G
H
I
K
L
MA
B
MTC

BLOWER FAN RESISTORPFP:27150
Removal and InstallationEJS004HE
REMOVAL
1. Remove glove box cover. Refer to IP-11, "Removal and Installation" .
2. Remove mounting screws, and then remove fan resistor.
CAUTION:
Do not repair the thermal fuse of the fan resistor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA0093E

MTC-26
INTAKE DOOR MOTOR

INTAKE DOOR MOTORPFP:27730
Removal and InstallationEJS004HG
REMOVAL
1. Remove blower unit. Refer to ATC-125, "BLOWER UNIT" .
2. Remove mounting screws, and then remove intake door motor
from blower unit.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA0056E
RJIA0571E