ECU INFINITI QX56 2010 Factory Service Manual

HAC-20
< FUNCTION DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM (HVAC)
DIAGNOSIS SYSTEM (HVAC)
CONSULT-III Function (HVAC)INFOID:0000000005147681
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
SELF-DIAGNOSIS
Display Item List
DATA MONITOR
Display Item List
Diagnostic mode
Description
SELF-DIAG RESULTS Displays A/C au to amp. self-diagnosis results.
DATA MONITOR Displays A/C auto amp. input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. ECU PART NUMBER A/C auto amp. part number can be read.
DTC Description
Reference page
B2573 Battery voltage out of range CHG-8, "
Inspection Procedure"
B2578 In-vehicle sensor circuit out of range (low)
HAC-78, "In-Vehicle Sensor Diagnosis Procedure"B2579 In-vehicle sensor circuit out of range (high)
B257B Ambient sensor circuit short HAC-75, "
Ambient Sensor Diagnosis Procedure"B257C Ambient sensor circuit open
B257F Optical sensor (Driver) circuit open or short HAC-81, "
Optical Sensor Diagnosis Procedure".
B2580 Optical sensor (Passenger) circuit open or short
B2581 Intake sensor circuit short HAC-83, "
Intake Sensor Diagnosis Procedure"B2582 Intake sensor circuit open
U1000 CAN bus fault LAN-14, "
Trouble Diagnosis Flow Chart"
Monitor itemValue Contents
BATT VIA CAN "V" Displays battery voltage signal.
IGN VIA CAN "ON/OFF" Displays ignition switch signal.
DVR SUNLD SEN "w/m2" Displays optical sensor (driver) signal.
PAS SUNLD SEN "w/m2" Displays optical sensor (passenger) signal.
AMB TEMP SEN "° C" Displays ambient sensor signal.
EVAP TEMP SEN "° C" Displays intake sensor signal.
INCAR TMP SEN "° C" Displays in-vehicle sensor signal.
RR TEMPSET FR "V" Displays air mix door (front) set point signal.
RR TEMPSET RR "V" Displays air mix door (rear) set point signal.
MODE FDBCK "V" Displays mode door motor feedback signal.
DVR MIX FDBCK "V" Displays air mix door motor (driver) feedback signal.
PAS MIX FDBCK "V" Displays air mix door motor (passenger) feedback signal.
RR FDBCK "V" Displays air mix door motor (rear) feedback signal.
DEF FDBCK "V" Displays defroster door motor feedback signal.
Revision: April 20092010 QX56

DIAGNOSIS SYSTEM (BCM)HAC-21
< FUNCTION DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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HAC
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DIAGNOSIS SYSTEM (BCM)
CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000005273928
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
CONSULT-III Function (BCM - AIR CONDITIONER)INFOID:0000000005273929
DATA MONITOR
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to BCS-54, "
DTCIndex".
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION The BCM pa rt number is displayed.
CONFIGURATION • Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.
System
Sub system selection item Diagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
BCM BCM ×
Door lock DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ×
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ××
Air conditioner AIR CONDITONER ×
Intelligent Key system INTELLIGENT KEY ×
Combination switch COMB SW ×
Immobilizer IMMU ××
Interior room lamp battery saver BATTERY SAVER ×××
Back door open TRUNK ××
RAP (retained accessory power) RETAINED PWR ×××
Signal buffer system SIGNAL BUFFER ××
TPMS (tire pressure monitoring sys-
tem) AIR PRESSURE MONITOR
×××
Panic alarm system PANIC ALARM ×
Revision: April 20092010 QX56

AIR CONDITIONER CONTROLHAC-89
< ECU DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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ECU DIAGNOSIS
AIR CONDITIONER CONTROL
A/C Auto Amp. Terminals Reference ValuesINFOID:0000000005147732
Measure voltage between each terminal and ground by following
Terminals and Reference Value for A/C auto amp. (1).
A/C AUTO AMP. HARNESS CO NNECTOR TERMINAL LAYOUT
TERMINALS AND REFERENCE VALUES FOR A/C AUTO AMP.
AWIIA0170ZZ
AWIIA0840ZZ
Te r m i n a l No. Wire
color Item
Ignition
switch Condition
Voltage (V)
(Approx.)
1 G/O Optical sensor (driver) ON- 0 - 5V
2 L Air mix door motor (passe nger) ON-Battery voltage
3 P V ref ACTR (ground) ON- 5V
4 W/R Compressor ON signal ON A/C switch OFF
5V
ON A/C switch ON 0V
5 L/R Fan ON signal ON Blower switch OFF
5V
ON Blower switch ON 0V
6 SB Air mix door motor (driver) feedback ON -0 - 5V
7 GR Mode door motor feedback ON- 0 - 5V
8 R/L Illumination + ON Park lamps ONBattery voltage
9 BR Illumination - - Park lamps ON
10 LG/B Defroster door motor feedback ON -0 - 5V
11 L/B Intake sensor ON- 0 - 5V
12 G/Y Variable blower control (rear) ON- 0 - 5V
13 G/R Variable blower control (front) ON- 0 - 5V
PIIA2344E
Revision: April 20092010 QX56

HAC-90
< ECU DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
AIR CONDITIONER CONTROL
14 G/W Air mix door motor (passenger) CW ON Clockwise rotation
Battery voltage
15 Y/G Power supply for IGN ON- Battery voltage
17 W/G Air mix door motor (driver) CW ON Clockwise rotationBattery voltage
18 G Air mix door motor (driver) CCW ON Coun terclockwise rotationBattery voltage
19 BR/W Mode door motor CW (front) ON Clockwise rotationBattery voltage
20 P/L Mode door motor CCW ON Counterclockwise rotationBattery voltage
21 G/B Intake door motor CCW ON Counterclockwise rotationBattery voltage
22 O Intake door motor CW ON Clockwise rotationBattery voltage
23 LG Defroster door motor CW ON Clockwise rotationBattery voltage
24 P/B Defroster door motor CCW ON Counterclockwise rotationBattery voltage
25 P Ambient sensor ON- 0 - 5V
26 V/R Sensor ground ON- 0V
27 Y/R Power supply for BAT -- Battery voltage
28 Y V ref ACTR (5V) ON- 0 - 5V
29 R/W Air mix door motor (passenger) feed-
back
ON
- 0 - 5V
30 R/Y Mode door motor (Rear) feedback ON -0 - 5V
31 BR/Y In-vehicle sensor motor (+) ON- Battery voltage
32 LG/R In-vehicle sensor signal ON- 0 - 5V
33 R/Y Air mix door motor (Rear) feedback ON -0 - 5V
36 B Ground -- 0V
40 P CAN-L ON- 0 - 5V
41 L CAN-H ON- 0 - 5V
42 W/V Optical sensor (passenger) ON- 0 - 5V
43 GR/R Mode door motor (Rear) CW ON Clockwise rotationBattery voltage
44 L/Y Mode door motor (Rear) CCW ON Counterclockwise rotation Battery voltage
45 Y/L Water valve ONWater valve open
Battery voltage
Water valve closed 0V
46 W/G Water valve ONWater valve open
0V
Water valve closed Battery voltage
47 O LIN BUS (rear) ON- Battery voltage
48 O LIN BUS (front) ON- Battery voltage
49 GR/R Air mix door motor (Rear) CW ONClockwise rotation Battery voltage
50 L/Y Air mix door motor (Rear) CCW ON Counterclockwise rotation Battery voltage
Te r m i n a l
No. Wire
color ItemIgnition
switch Condition Voltage (V)
(Approx.)
Revision: April 20092010 QX56

AIR CONDITIONER CONTROLHAC-91
< ECU DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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Wiring DiagramINFOID:0000000005147733
ABIWA0062GB
Revision: April 20092010 QX56

HAC-92
< ECU DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
AIR CONDITIONER CONTROL
ABIWA0054GB
Revision: April 20092010 QX56

AIR CONDITIONER CONTROLHAC-93
< ECU DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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ABIWA0055GB
Revision: April 20092010 QX56

HAC-94
< ECU DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
AIR CONDITIONER CONTROL
ABIIA0305GB
Revision: April 20092010 QX56

AIR CONDITIONER CONTROLHAC-95
< ECU DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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HAC
N
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ABIIA0306GB
Revision: April 20092010 QX56

HAC-96
< ECU DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
AIR CONDITIONER CONTROL
ABIIA0307GB
Revision: April 20092010 QX56