Nissan Maxima. Instruction — part 722
HAC-64
< ECU DIAGNOSIS INFORMATION >
[WITH COLOR DISPLAY]
A/C AUTO AMP.
Fail-Safe
INFOID:0000000010051010
FAIL-SAFE FUNCTION
• If a communication error exists between the A/C auto amp., the AV control unit and A/C and AV switch
assembly for 30 seconds or longer, air conditioner is controlled under the following conditions:
DTC Inspection Priority Chart
INFOID:0000000010051011
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
10
L/R
LAN signal
ON
—
11
L/W
Power supply for each door motor
ON
—
Battery voltage
15
O
Sunload sensor
ON
—
0 - 5V
16
R/G
Intake sensor
ON
—
0 - 5V
17
V/Y
Power supply from ACC
ACC
—
Battery voltage
19
B
Ground
ON
—
0V
20
G
Power supply from IGN
ON
—
Battery voltage
27
—
—
—
—
Circuits not use for this model
32
L/Y
Blower motor control signal
ON
Fan
speed:1st
speed
(instruction)
35
O/B
Ambient sensor
ON
—
0 - 5V
36
LG
In-vehicle sensor
ON
—
0 - 5V
37
B/Y
Sensor ground
—
—
0V
39
B
Ground
—
—
0V
40
Y/R
Power supply from BATT
—
—
Battery voltage
Terminal
No.
Wire col-
or
Item
Ignition
switch
Condition
Value
(Approx.)
SJIA1453J
JSIIA0096ZZ
Compressor
: ON
Air outlet
: AUTO
Air inlet
: FRE (Fresh)
Blower fan speed
: AUTO
Set temperature
: Setting before communication error occurs
Display
: OFF
A/C AUTO AMP.
HAC-65
< ECU DIAGNOSIS INFORMATION >
[WITH COLOR DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
DTC Index
INFOID:0000000010051012
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
DTC
Items
(CONSULT 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)
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
HAC-66
< ECU DIAGNOSIS INFORMATION >
[WITH COLOR DISPLAY]
A/C AUTO AMP.
*: Perform self-diagnosis under direct sunlight. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-
diagnosis indicates a DTC even though the sunload sensor is functioning normally.
AIR CONDITIONER CONTROL
HAC-67
< WIRING DIAGRAM >
[WITH COLOR DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
WIRING DIAGRAM
AIR CONDITIONER CONTROL
Wiring Diagram - With Color Display
INFOID:0000000010051013
ABIWA0341GB
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