Nissan Murano Z51. Instruction — part 864
INSUFFICIENT COOLING
HAC-111
< SYMPTOM DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
NO-1
>> Air outlet does not change. Refer to
.
NO-2
>> Air inlet does not change. Refer to
.
NO-3
>> Discharge air temperature does not change. Refer to
.
NO-4
>> Blower motor does not operate normally. Refer to
NO-5
>> Magnet clutch does not operate. Refer to
7.
CHECK AMBIENT TEMPERATURE DISPLAY
Check that there is not much difference between actual ambient temperature and indicated temperature on
information display in combination meter.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Perform the diagnosis for the A/C auto amp. connection recognition signal. Refer to
8.
CHECK DRIVE BELT
Check tension of the drive belt. Refer to
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Adjust or replace drive belt.
9.
CHECK AIR LEAKAGE FROM DUCT
Check duct and nozzle, etc, of the A/C system for air leakage.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace parts according to the inspection results.
HAC-112
< SYMPTOM DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
INSUFFICIENT HEATING
INSUFFICIENT HEATING
Description
INFOID:0000000005514655
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Inspection procedure
INFOID:0000000005514656
1.
CHECK COOLING SYSTEM
1.
Check engine coolant level and check for leakage. Refer to
.
2.
Check radiator cap. Refer to
CO-15, "RADIATOR CAP : Inspection"
3.
Check water flow sounds of engine coolant. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Refill the engine coolant and repair or replace the parts according to the inspection results.
2.
CHECK OPERATION
1.
Press temperature switch (driver side) and raise temperature setting to 32
°
C (90
°
F) after warming up the
engine.
2.
Check that warm air blows from the outlets.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 3.
3.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER
Using CONSULT-III, check the setting of “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC. Refer to
HAC-9, "Temperature Setting Trimmer"
1.
Check that the temperature setting trimmer is set to “
−
direction”.
NOTE:
The control temperature can be set by the temperature setting trimmer.
2.
Set temperature control dial to “0”.
Are the malfunction solved?
YES
>> Perform the setting separately if necessary. END.
NO
>> GO TO 4.
4.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1.
Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2.
Check if any DTC No. is displayed in the trouble diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
.
Is any DTC No. displayed?
YES
>> Perform the diagnosis that is applicable to the sensor and the door motor. Refer to
.
NO
>> GO TO 5.
5.
CHECK WITH ACTIVE TEST OF CONSULT-III
1.
Using CONSULT-III, perform “HVAC TEST” in “ACTIVE TEST” of HVAC to check each output device.
Refer to
HAC-39, "CONSULT-III Function"
NOTE:
Perform the ACTIVE TEST after starting the engine because the compressor is operated.
2.
Refer to the table and check the outlet, inlet, air flow temperature, blower motor control signal, magnet
clutch operation, and air mix ratio. Visually check each operating condition, by listening for noise, touch-
ing air outlets with a hand, etc.
INSUFFICIENT HEATING
HAC-113
< SYMPTOM DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
NOTE:
Perform the inspection of each output device after starting the engine because the compressor is operated.
Does it operate normally?
YES
>> GO TO 6.
NO-1
>> Air outlet does not change. Refer to
.
NO-2
>> Air inlet does not change. Refer to
.
NO-3
>> Discharge air temperature does not change. Refer to
.
NO-4
>> Blower motor does not operate normally. Refer to
NO-5
>> Magnet clutch does not operate. Refer to
Test item
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MODE 6
MODE 7
Mode door position
VENT1
VENT2
B/L1
B/L2
FOOT
D/F
DEF
Intake door position
REC
REC
20%FRE
20%FRE
FRE
FRE
FRE
Air mix door position
(driver & passenger
side)
FULL COLD
FULL HOT
FULL COLD
FULL HOT
FULL HOT
FULL HOT
FULL HOT
Blower motor duty ratio
35%
35%
61%
61%
81%
81%
35%
Compressor (Magnet
clutch)
ON
ON
ON
ON
OFF
OFF
ON
Upper ventilator door
OPEN
SHUT
OPEN
SHUT
SHUT
SHUT
SHUT
JPIIA0509GB
JPIIA0510GB
HAC-114
< SYMPTOM DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
INSUFFICIENT HEATING
6.
CHECK AIR LEAKAGE FROM DUCT
Check duct and nozzle, etc, of the A/C system for air leakage.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace parts according to the inspection results.
7.
CHECK HEATER HOSE INSTALLATION CONDITION
Check the heater hose installation condition visually (for twists, crushes, etc.).
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace parts according to the inspection results.
8.
CHECK TEMPERATURE OF HEATER HOSE
1.
Check the temperature of inlet hose and outlet hose of heater core.
2.
Check that the inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the
inlet side.
CAUTION:
Always perform the temperature inspection in a short period of time because the engine coolant
temperature is very hot.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace the heater core after performing the procedures after the cooling system inspection. GO
TO 1.
9.
REPLACE HEATER CORE
Replace the heater core. Refer to heater core. Refer to
.
Are the malfunction solved?
YES
>> INSPECTION END
NO
>> Perform the procedures again after the cooling system inspection. GO TO 1.
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