2009 NISSAN TIIDA compressor

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OK >> GO TO 11.
NG >> Repair harness or connector. OK >> Replace the front blower motor resistor. Refer to
MTC-66, " Removal and Installation " .
NG >> Replace front air control. Refer to MTC-58, " Removal and Installation " .
Magnet Clutch Circuit (If Equipped) INFOID:0000000004307072
SYMPTOM: Magnet clutch does not engage.
INSPECTION FLOW YES >> GO TO 3.
NO >> GO TO 2. Operational Check " .
Does another symptom exist? YES >> Refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick and Accurate Repair " .
NO >> System OK. Checking " (HR16DE) or
EM-136, " Checking Drive Belts "
(MR18DE).
OK or NG OK >> GO TO 5.
NG >> Adjust or replace A/C compressor belt. Refer to EM-15, " Removal and Installation " (HR16DE) or
EM-136, " Removal and Installation " (MR18DE).
Insufficient Cooling " .
OK or NG OK >> GO TO 6.
NG >> Perform trouble diagnosis for unusual pressure. Refer to MTC-45, " Insufficient Cooling " .
Terminals Condition Continuity
9 14 Fan control dial: OFF
Yes
10 Fan control dial: 1-speed
11 Fan control dial: 2-speed
12 Fan control dial: 3-speed
13 Fan control dial: 4-speed

OK >> If the symptom still exists, perform
a complete operational check. Refer to MTC-30, " Operational
Check " . If other symptoms exist, refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick
and Accurate Repair " .
NG >> Repair as necessary.
SYSTEM DESCRIPTION
Thermo control amp. controls A/C compressor operat ion by intake air temperature and signal from ECM.
The defrost A/C switch controls A/ C compressor operation by the BCM when the mode switch is turned to the
(DEF) position.
Low Temperature Protection Control
When intake air temperatures are higher than 4 °C (39 °F), the com-
pressor turns ON. The compressor turns OFF when intake air tem-
peratures are lower than 2 °C (36 °F).
DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage in A/C, defrost/foot, or defrost mode.Auto Active Test " .
Does the magnet clutch operate? YES >> GO TO 5.
NO >> Check 10A fuse (No. 42, located in the IPDM E/R). Refer to PG-23, " IPDM E/R Terminal
Arrangement - Type B " .
• If fuse is OK, GO TO 2.
• If fuse is NG, replace fuse and check harness for short circuit. Repair or replace if necessary.

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OK or NG OK >> GO TO 3.
NG >> Check harness for open circuit. Re pair or replace if necessary.OK >> Replace magnet clutch. Refer to
MTC-78, " Removal and
Installation of Compressor - HR16DE " or
MTC-80, " Removal and Installation of Compressor - MR18DE " .
NG >> GO TO 4. OK >> Replace IPDM E/R. Refer to
PG-27, " Removal and
Installation of IPDM E/R " .
NG >> Repair harness or connector. OK >> GO TO 6.
NG >> GO TO 23. CONSULT-II Function (BCM) " .
OK or NG OK >> GO TO 8.
NG >> GO TO 7.

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Check continuity between A/C def
rost switch harness connector
M41 terminal 16 and ground.
OK or NG OK >> Replace defrost A/C switch.
NG >> Repair harness or connector.
Insufficient Cooling INFOID:0000000004307073
SYMPTOM: Insufficient cooling
INSPECTION FLOW YES >> GO TO 3.
NO >> GO TO 2. Operational Check " .
Does another symptom exist? YES >> Refer to
MTC-22, " How to Perform Trouble Diagnosis for Quick and Accurate Repair " .
NO >> System OK. Checking " (HR16DE) or
EM-136, " Checking Drive Belts "
(MR18DE).
OK or NG OK >> GO TO 5.
NG >> Adjust or replace compressor belt. Refer to EM-15, " Removal and Installation " (HR16DE) or
EM- 136, " Removal and Installation " (MR18DE).
Air Mix Door Cable Adjustment " .
Does air mix door operate correctly? YES >> GO TO 6.
NO >> Repair or replace as necessary. Overall Function Check " (MR
TYPE 1), EC-1409, " Overall Function Check " (MR TYPE 2) or
EC-368, " Component Function Check "
(HR16DE).
Does cooling fan motor operate correctly? YES >> GO TO 7.
NO >> Check cooling fan motor. Refer to EC-890, " Diagnosis Procedure " (MR TYPE 1),
EC-1412, " Diag-
nosis Procedure " (MR TYPE 2) or
EC-368, " Component Function Check " (HR16DE).
16 - Ground :Continuity should exist

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*1
MTC-87, " Checking System for
Leaks Using the Fluorescent Leak
Detector " *2
MTC-78, " Removal and Installation of
Compressor - HR16DE " or
MTC-80, " Removal and Installation of Com-
pressor - MR18DE " *3 "PERFORMANCE CHART"
*4 "TROUBLE DIAGNOSIS FOR AB- NORMAL PRESSURE" *5
MTC-32, " Air Mix Door "

Removal and Installation " *2
MTC-33, " Front Blower Motor Circuit " *3
MTC-78, " Removal and Installation of
Compressor - HR16DE " or
MTC-80, " Removal and Installation of Com-
pressor - MR18DE "
*4
EM-14, " Checking " (HR16DE)
EM- 136, " Checking Drive Belts "
(MR18DE) *5
MTC-78, " Removal and Installation of
Compressor - HR16DE " or
MTC-80, " Removal and Installation of Com-
pressor - MR18DE "

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Both High- and Low-pressure Sides are Too Low
Low-pressure Side Some times Becomes Negative
Low-pressure Side Becomes Negative Gauge indication Refrigerant cycle Probable cause Corrective 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 components Check refrigerant for leaks.
Refer to MTC-86, " 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-37, " Magnet
Clutch Circuit (If Equipped) "
.
• Replace compressor.
• Repair evaporator fins.
• Replace evaporator.
• Refer to MTC-33, " Front
Blower Motor Circuit " .

Operational Check " *2.
EM-14, " Checking " (HR16DE) or
EM- 136, " Checking Drive Belts "
(MR18DE) *3.
MTC-45, " Insufficient Cooling "
*4.
MTC-86, " Removal and Installation of
Expansion Valve " *5.
MTC-78, " Removal and Installation of
Compressor - HR16DE " or
MTC-80, " Removal and Installation of Com-
pressor - MR18DE " *6
MTC-78, " Removal and Installation of
Compressor - HR16DE " or
MTC-80, " Removal and Installation of Com-
pressor - MR18DE "
*7.
MTC-78, " Removal and Installation of
Compressor - HR16DE " or
MTC-80, " Removal and Installation of Com-
pressor - MR18DE " *8.
MTC-17, " Maintenance of Oil Quanti-
ty in Compressor " *9
MTC-84, " Removal and Installation of
Liquid Tank "