NISSAN TIIDA 2010 Service Repair Manual

MTC-52
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Both High- and Low-pressure Sides are Too Low
Low-pressure Side Sometimes Becomes Negative
Low-pressure Side Becomes Negative
Gauge indication Refrigerant cycle Probable causeCorrective action
Both high- and low-pressure
sides are too low. • There is a big temperature dif-
ference between liquid tank
outlet and inlet. Outlet tem-
perature is extremely low.
• Liquid tank inlet and expan- sion valve are frosted. Liquid tank inside is slightly
clogged.
• Replace liquid tank.
• Check oil for contamination.
• Temperature of expansion valve inlet is extremely low as
compared with areas near liq-
uid tank.
• Expansion valve inlet may be
frosted.
• Temperature difference oc- curs somewhere in high-pres-
sure side. High-pressure pipe located be-
tween liquid tank and expansion
valve is clogged.
• Check and repair malfunc-
tioning parts.
• Check oil for contamination.
Expansion valve and liquid tank
are warm or only cool when
touched. Low refrigerant charge.
↓
Leaking fittings or componentsCheck refrigerant for leaks.
Refer to
MTC-92, "
Checking of
Refrigerant Leaks" .
There is a big temperature dif-
ference between expansion
valve inlet and outlet while the
valve itself is frosted. Expansion valve closes a little
compared with the specification.
↓
1. Improper expansion valve
adjustment.
2. Malfunctioning expansion valve.
3. Outlet and inlet may be clogged. • Remove foreign particles by
using compressed air.
• Replace expansion valve.
• Check oil for contamination.
An area of the low-pressure pipe
is colder than areas near the
evaporator outlet. Low-pressure pipe is clogged or
crushed.• Check and repair malfunc-
tioning parts.
• Check oil for contamination.
Air flow volume is not enough or
is too low. Evaporator is frozen.• Check thermo control amp.
Refer to MTC-38, "
Magnet
Clutch Circuit (If Equipped)"
.
• Replace compressor.
• Repair evaporator fins.
• Replace evaporator.
•Refer to MTC-34, "
Front
Blower Motor Circuit" .
AC353A
Gauge indication Refrigerant cycleProbable causeCorrective action
Low-pressure side sometimes be-
comes negative. • Air conditioning system does
not function and does not cy-
clically cool the compart-
ment air.
• The system constantly func-
tions for a certain period of
time after compressor is
stopped and restarted. Refrigerant does not discharge
cyclically.
↓
Moisture is frozen at expan-
sion valve outlet and inlet.
↓
Water is mixed with refrigerant.
• Drain water from refrigerant
or replace refrigerant.
• Replace liquid tank.
AC354A
Revision: January 20102010 Versa

TROUBLE DIAGNOSISMTC-53
< SERVICE INFORMATION >
C
DE
F
G H
I
K L
M A
B
MTC
N
O P
Insufficient HeatingINFOID:0000000005396504
SYMPTOM: Insufficient heating
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERAT IONAL CHECK - TEMPERATURE INCREASE
1. Turn temperature control dial clockwise to maximum heat position.
2. Check for hot air at discharge air outlets.
Can the symptom be duplicated?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to MTC-31, "
Operational Check" .
Does another symptom exist?
YES >> Refer to MTC-23, "How to Perform Trouble Diagnosis for Quick and Accurate Repair" .
NO >> System OK.
3.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4.
4.CHECK COOLANT SYSTEM
1. Check engine coolant level. Refer to CO-12, "
Inspection" (HR16DE) or CO-36, "Inspection" (MR18DE).
2. Check hoses for leaks or kinks.
3. Check Radiator cap. Refer to CO-15, "
Checking Radiator Cap" HR16DE or CO-39, "Checking Radiator
Cap" (MR18DE).
OK or NG
OK >> GO TO 5.
NG >> Repair/replace as necessary.
5.CHECK AIR MIX DOOR CABLE
Check air mix door cable operation. Refer to MTC-65, "
Air Mix Door Cable Adjustment" .
OK or NG
Gauge indication Refrigerant cycleProbable causeCorrective action
Low-pressure side becomes nega-
tive. Liquid tank or front/rear side of
expansion valve’s pipe is frost-
ed or dewed.High-pressure side is closed
and refrigerant does not flow.
↓
Expansion valve or liquid tank
is frosted.Leave the system at rest until
no frost is present. Start it
again to check whether or not
the malfunction is caused by
water or foreign particles.
• If water is the cause, initially
cooling is okay. Then the wa-
ter freezes causing a block-
age. Drain water from
refrigerant or replace refrig-
erant.
• If due to foreign particles, re-
move expansion valve and
remove the particles with dry
and compressed air (not
shop air).
• If either of the above meth- ods cannot correct the mal-
function, replace expansion
valve.
• Replace liquid tank.
• Check oil for contamination.
AC362A
Revision: January 20102010 Versa

MTC-54
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
YES >> GO TO 6.
NO >> Adjust or replace air mix door cable. Refer to MTC-65, "
Air Mix Door Cable Adjustment" .
6.CHECK AIR DUCTS
Check ducts for air leaks.
OK or NG
OK >> GO TO 7.
NG >> Repair air leaks.
7.CHECK HEATER HOSE TEMPERATURES
1. Start engine and warm it up to normal operating temperature.
2. Touch both the inlet and outlet heater hoses. The inlet hose should be hot and the outlet hose should be
warm.
Is the inlet hose hot and the outlet hose warm?
YES >> GO TO 8.
NO >> Both hoses warm: GO TO 9.
8.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check engine control temperature sensor. Refer to EC-690, "
Component Inspection" (MR18DE) or EC-163,
"Component Inspection" (HR16DE).
OK or NG
OK >> System OK.
NG >> Repair or replace as necessary. Retest.
9.CHECK HEATER HOSES
Check heater hoses for proper installation.
OK or NG
OK >> GO TO 10.
NG >> Repair /replace as necessary. Retest GO TO 7.
10.BACK FLUSH HEATER CORE
1. Back flush heater core.
2. Drain the water from the system.
3. Refill system with new engine coolant. Refer to CO-12, "
Changing Engine Coolant" (HR16DE) or CO-36,
"Changing Engine Coolant" (MR18DE) .
4. Start engine and warm it up to normal operating temperature.
5. Touch both the inlet and outlet heater hoses. The inlet hose should be hot and the outlet hose should be
warm.
Is the inlet hose hot and the outlet hose warm?
YES >> System OK.
NO >> Replace heater core and refill engine coolant. Refer to MTC-68, "
Removal and Installation" .
NoiseINFOID:0000000005396505
SYMPTOM: Noise
INSPECTION FLOW
Revision: January 20102010 Versa

TROUBLE DIAGNOSISMTC-55
< SERVICE INFORMATION >
C
DE
F
G H
I
K L
M A
B
MTC
N
O P
*1. MTC-31, "Operational Check"*2.EM-14, "Checking" (HR16DE) or EM-
132, "Checking Drive Belts"
(MR18DE) *3.
MTC-46, "
Insufficient Cooling"
*4.MTC-92, "Removal and Installation of
Expansion Valve"
*5.MTC-79, "Removal and Installation of
Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com-
pressor - MR18DE"
*6 MTC-79, "Removal and Installation of
Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com-
pressor - MR18DE"
*7. MTC-79, "Removal and Installation of
Compressor - HR16DE" or MTC-81,
"Removal and Installation of Com-
pressor - MR18DE"
*8.MTC-17, "Maintenance of Oil Quanti-
ty in Compressor"
*9 MTC-90, "Removal and Installation of
Liquid Tank"
AWIIA1001GB
Revision: January 20102010 Versa

MTC-56
< SERVICE INFORMATION >
CONTROLLER
CONTROLLER
Removal and InstallationINFOID:0000000005396506
REMOVAL
1. Remove cluster lid C and instrument finisher D. Refer to IP-11, "Component Parts" .
2. Remove intake door lever knob. Refer to MTC-57, "
Disassembly and Assembly" .
3. Remove mounting screws and clips, and then remove controller finisher.
4. Remove mounting screws, and then pull out controller.
5. Remove instrument panel and pad. Refer to IP-11, "
Component Parts" .
6. Remove air mix door cable, mode door cable and intake door cable from A/C unit assembly.
7. Disconnect connector, and then remove controller.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Adjust the door cables duri ng installation. Refer to MTC-64, "
Intake Door Cable Adjustment" , MTC-66,
"Mode Door Cable Adjustment" and MTC-65, "Air Mix Door Cable Adjustment" .
ZJIA0697E
ZJIA0698E
Revision: January 20102010 Versa

CONTROLLERMTC-57
< SERVICE INFORMATION >
C
DE
F
G H
I
K L
M A
B
MTC
N
O P
Disassembly and AssemblyINFOID:0000000005396507
CAUTION:
Install inner cable of each do or cable to the corresponding
lever, as shown in the figure. Pr ess outer cable until it hooks on
the tabs and becomes secure.
1. Air mix door cable 2. Intake door cable3. Mode door cable
4. A/C controller assembly 5. Mode control dial6. Rear DEF button
7. A/C button 8. Temperature control dial9. Illumination bulb
10. Intake door lever knob 11. Fan control dial
ZJIA0106J
MJIA0038E
Revision: January 20102010 Versa

MTC-58
< SERVICE INFORMATION >
THERMO CONTROL AMPLIFIER
THERMO CONTROL AMPLIFIER
Removal and InstallationINFOID:0000000005396508
NOTE:
Only MR18DE - TYPE 2 systems are equipped with a thermo control amplifier.
REMOVAL
1. Remove evaporator. Refer to MTC-91, "Removal and Installation of Evaporator" .
CAUTION:
Cap or wrap the joint of the pipe with suitable ma terial such as vinyl tape to avoid the entry of air.
2. Mark the mounting position of the thermo control amp. and then
remove thermo control amp. (1) from evaporator (2).
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace O-rings for A/C piping with new ones, and apply compressor oil when installing.
• Install the thermo control amp. at the mark made during removal of the thermo control amp.
• When recharging refrigerant, check for leaks.
ZJIA0798J
Revision: January 20102010 Versa

A/C UNIT ASSEMBLYMTC-59
< SERVICE INFORMATION >
C
DE
F
G H
I
K L
M A
B
MTC
N
O P
A/C UNIT ASSEMBLY
Removal and InstallationINFOID:0000000005396509
REMOVAL
1. Use a recovery/recycling equipment (f or HFC-134a) to discharge refrigerant.
2. Drain coolant from cooling system. Refer to CO-36, "
Changing Engine Coolant".
3. Remove cowl top cover. Refer to EI-22, "
Removal and Installation".
4. Remove upper clip and position the lower dash insulator aside.
5. Remove bolt (A), and then disconnect low-pressure flexible hose (1) and high-pressure pipe (2) from evaporator.
CAUTION:
Cap or wrap the joint of the pi pe with suitable material such
as vinyl tape to avoid the entry of air.
6. Remove clamps (A), and then disconnect heater hoses (1) from heater core.
7. Remove console box assembly. Refer to IP-11, "
Component Parts".
A. A/C unit assembly boltsB. Steering member boltsC. Steering column nuts
SJIA0648E
SJIA0644E
SJIA0645E
Revision: January 20102010 Versa

MTC-60
< SERVICE INFORMATION >
A/C UNIT ASSEMBLY
8. Remove instrument stay nuts (A) and harness clamps (B), andthen remove instrument stay (1).
9. Disconnect thermo control amp. connector (1) for MR18DE - TYPE 2 systems as shown. Di sconnect the thermo control amp.
short connector for MR18DE - TYPE 1 and HR16DE systems.
10. Remove instrument panel and pad. Refer to IP-11, "
Component Parts".
11. Remove side ventilator ducts. Refer to MTC-70, "
Removal and Installation".
12. Remove center ventilator ducts. Refer to MTC-70, "
Removal and Installation".
13. Remove side kicking plates. Refer to EI-39, "
Component".
14. Disconnect the fuel filler door cable and the rear hatch door cable.
15. Remove A/C unit assembly bolts, steering member bolts, steering column nuts and harness clips.
16. Remove steering member, and then remove A/C unit assembly.
INSTALLATION
Installation is in the reverse order of removal.
• When filling radiator with coolant, refer to CO-36, "
Changing Engine Coolant".
• Recharge the refrigerant.
CAUTION:
• Replace O-rings for A/C piping with new ones, and apply compressor oil when installing.
• When recharging refrigerant, check for leaks.
SJIA0646E
SJIA0647E
A/C unit assembly bolt : 6.9 N·m (0.7 kg-m, 61 in-lb)
Steering member bolt : 12 N·m (1.25 kg-m, 9 ft-lb)
Steering column nut : Refer to PS-9, "
Removal and Installation".
Revision: January 20102010 Versa

A/C UNIT ASSEMBLYMTC-61
< SERVICE INFORMATION >
C
DE
F
G H
I
K L
M A
B
MTC
N
O P
Disassembly and AssemblyINFOID:0000000005396510
1. Blower case (right) 2. Foot duct (right) 3. Blower motor
4. Sub ventilator·defroster door lever 5. Sub ventilator·defroster door rod 6. Ventilator·defroster door lever
7. Ventilator·defroster door rod 8. Intake door lever 9. Ventilator·defroster door link
10. Main link 11. Thermo control amp.
(MR18DE - TYPE1) 12. Heater pipe packing
13. Lower blower case 14. Heater pipe cover 15. Heater pipe clip
16. Intake door link 17. Blower fan resistor 18. Intake case (left)
19. Center defroster duct 20. Blower case (left) 21. Cover
22. Cover 23. Expansion valve cover 24. Foot door lever
25. Foot door link 26. Expansion valve 27. Air conditioner filter
28. Evaporator cover 29. Heater core 30. Spring
31. Water valve rod 32. Air mix door lever 33. Intake door
34. Intake case (right) 35. Foot duct (left) 36. Ventilator·defroster door
37. Foot door 38. Air mix door 39. Seal
SJIA1515E
Revision: January 20102010 Versa