Nissan Murano Z51. Manual — part 893
A/C AUTO AMP.
HAC-227
< ECU DIAGNOSIS INFORMATION >
[WITH 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
*: Perform self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-diag-
nosis indicates even though the sunload sensor is functioning normally.
B2634
PASS AIRMIX ACTR SHORT
B2635
PASS AIRMIX ACTR OPEN
B2636
DR VENT DOOR FAIL
B2637
DR B/L DOOR FAIL
B2638
DR D/F1 DOOR FAIL
B2639
DR DEF DOOR FAIL
B263D
FRE DOOR FAIL
B263E
20P FRE DOOR FAIL
B263F
REC DOOR FAIL
B2654
D/F2 DOOR FAIL
B2655
B/L2 DOOR FAIL
B2661
UPPER VENT DOOR OPEN POSI FAIL
B2662
UPPER VENT DOOR MID POSI FAIL
B2663
UPPER VENT DOOR SHUT POSI FAIL
DTC
Items
(CONSULT-III screen terms)
Reference
HAC-228
< SYMPTOM DIAGNOSIS >
[WITH 7 INCH DISPLAY]
AIR CONDITIONER CONTROL
SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Diagnosis Chart By Symptom
INFOID:0000000005514753
Symptom
Reference
A/C system does not activate.
Go to Trouble Diagnosis Procedure for A/C System.
A/C system cannot be controlled.
Go to Trouble Diagnosis Procedure for Preset Switch Sys-
tem.
(bose audio without navigation)
or
(bose audio with navigation)
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.
(LAN)
Mode door motor does not operate
normally.
Discharge air temperature does not
change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.
(LAN)
(pas-
senger side)
Air mix door motor does not operate
normally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.
(LAN)
Intake door motor does not operate
normally.
Blower motor operation is malfunc-
tioning.
Go to Trouble Diagnosis Procedure for Blower Motor.
Magnet clutch does not engage.
Go to Trouble Diagnosis Procedure for Magnet Clutch.
Insufficient cooling
Go to Trouble Diagnosis Procedure for Insufficient Cooling.
No cool air comes out.
(Air flow volume is normal.)
Insufficient heating
Go to Trouble Diagnosis Procedure for Insufficient Heating.
No warm air comes out.
(Air flow volume is normal.)
Noise
Go to Trouble Diagnosis Procedure for Noise.
Memory function does not operate.
Go to Trouble Diagnosis Procedure for Memory Function.
INSUFFICIENT COOLING
HAC-229
< SYMPTOM DIAGNOSIS >
[WITH 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
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HAC
N
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INSUFFICIENT COOLING
Description
INFOID:0000000005514754
Symptom
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
Inspection procedure
INFOID:0000000005514755
1.
CHECK WITH A GAUGE OF RECOVERY/RECYCLING RECHARGING EQUIPMENT
Connect the recovery/recycling recharging equipment to the vehicle and perform the pressure inspection with
the gauge.
Is there refrigerant?
YES
>> GO TO 2.
NO-1
>> Check for refrigerant leakages with the refrigerant leakage detecting fluorescent leak detector.
.
NO-2
>> GO TO 2 after repairing or replacing the parts according to the inspection results.
2.
CHECK CHARGED REFRIGERANT AMOUNT
1.
Connect recovery/recycling recharging equipment to the vehicle and discharge the refrigerant.
2.
Recharge with the proper amount of refrigerant and perform the inspection with the refrigerant leakage
detecting fluorescent leak detector. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Refill the refrigerant and repair or replace the parts according to the inspection results.
3.
CHECK REFRIGERANT CYCLE PRESSURE
Connect recovery/recycling recharging equipment to the vehicle and perform the performance test. Refer to
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Perform the diagnosis with the gauge pressure. Refer to
HA-8, "Trouble Diagnosis For Unusual
4.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER
Using CONSULT-III, check the setting of “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC. Refer to
HAC-131, "Temperature Setting Trimmer"
.
1.
Check that the temperature setting trimmer is set to “+ direction”.
NOTE:
The control temperature can be set with the setting of 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 5.
5.
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 6.
6.
CHECK WITH ACTIVE TEST OF CONSULT-III
HAC-230
< SYMPTOM DIAGNOSIS >
[WITH 7 INCH DISPLAY]
INSUFFICIENT COOLING
1.
Using CONSULT-III, perform “HVAC TEST” “ACTIVE TEST” of HVAC to check each output device. Refer
to
HAC-161, "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.
NOTE:
Perform the inspection of each output device after starting the engine because the compressor is operated.
Does it operate normally?
YES
>> GO TO 7.
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
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