Nissan Teana J32. Manual — part 679
A/C AUTO AMP.
HAC-85
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
DTC Inspection Priority Chart
INFOID:0000000003846377
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC Index
INFOID:0000000003846378
Compressor
: ON
Air outlet
: AUTO
Air inlet
: FRE (Fresh)
Blower fan speed
: AUTO
Set temperature
: Setting before communication error occurs
Priority
Detected items (DTC)
1
• U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)
2
• B257B: AMB TEMP SEN (SHORT)
• B257C: AMB TEMP SEN (OPEN)
• B2578: IN CAR SENSOR (OUT OF RANGE [LOW])
• B2579: IN CAR SENSOR (OUT OF RANGE [HI])
• B2581: EVAP TEMP SEN (SHORT)
• B2582: EVAP TEMP SEN (OPEN)
• B2630: SUNLOAD SEN (SHORT)
• B2631: SUNLOAD SEN (OPEN)
• B2632: DR AIRMIX ACTR (SHORT)
• B2633: DR AIRMIX ACTR (OPEN)
• 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
• B2656: BTC FRE DOOR FAIL
DTC
Items
(CONSULT-III screen terms)
Reference
U1000
CAN COMM CIRCUIT
U1010
CONTROL UNIT (CAN)
B257B
AMB TEMP SEN (SHORT)
B257C
AMB TEMP SEN (OPEN)
B2578
IN CAR SENSOR (OUT OF RANGE [LOW])
B2579
IN CAR SENSOR (OUT OF RANGE [HI])
B2581
EVAP TEMP SEN (SHORT)
B2582
EVAP TEMP SEN (OPEN)
B2630
*
SUNLOAD SEN (SHORT)
B2631
*
SUNLOAD SEN (OPEN)
B2632
DR AIRMIX ACTR (SHORT)
B2633
DR AIRMIX ACTR (OPEN)
B2634
PASS AIRMIX ACTR (SHORT)
HAC-86
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
A/C AUTO AMP.
*: 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.
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
B2656
BTC FRE DOOR FAIL
DTC
Items
(CONSULT-III screen terms)
Reference
AIR CONDITIONER CONTROL
HAC-87
< SYMPTOM DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Diagnosis Chart By Symptom
INFOID:0000000003846383
Symptom
Reference
A/C system does not activate.
Go to Trouble Diagnosis Procedure for A/C Control Signal
Circuit.
A/C display dose not work.
Go to Trouble Diagnosis Procedure for A/C Display.
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.
HAC-88
< SYMPTOM DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
INSUFFICIENT COOLING
INSUFFICIENT COOLING
Description
INFOID:0000000003846386
Symptom
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
Inspection procedure
INFOID:0000000003846387
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-10, "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 switch 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 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 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
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