Infiniti Q45 (FY33). Manual — part 479
THA282
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
EL
IDX
TROUBLE DIAGNOSES
Wiring Diagram — A/C, A —/With Navigation
System (Cont’d)
HA-81
THA283
TROUBLE DIAGNOSES
Wiring Diagram — A/C, A —/With Navigation
System (Cont’d)
HA-82
RHA950F
Auto Amp. Terminals and Reference Value
INSPECTION OF AUTO AMP.
I
Measure voltage between each terminal and body ground by
following “AUTO AMP. INSPECTION TABLE”.
I
Pin connector terminal layout
RHA159H
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
EL
IDX
TROUBLE DIAGNOSES
HA-83
AUTO AMP. INSPECTION TABLE
TERMINAL
NO.
ITEM
CONDITION
Voltage
V
1
Intake sensor
—
—
2
Ambient sensor
—
—
3
In-vehicle sensor
—
—
4
Vehicle speed sensor
When moving vehicle at 2 to 3 km/h (1 to 2 MPH).
Varies from 0 to 5
5
Rear window defogger
Defogger switch
ON
Approximately 12
OFF
Approximately 0
6
Intake door position switch
Intake door position
FRESH or 20% FRESH
Approximately 0
RECIRCULATION
Approximately 4.6
7
Multiplex communication (TX) signal
—
—
8
Multiplex communication (RX) signal
—
—
9
Sensor ground
—
Approximately 0
10
Sunload sensor
—
—
11
Thermal transmitter
Engine coolant tempera-
ture
Approximately
56°C (133°F)
Approximately 9.8
Approximately
80°C (176°F)
Approximately 7 - 8
Approximately
105°C (221°F)
Approximately 2.2
12
Ground (for Canada)
—
Approximately 0
14
A/C LAN signal
—
—
15
Power supply for rear vent door
motor
Mode switch: VENT
Set temperature:
18°C (65°F)
Approximately 0
Except above
Approximately 12
16
Mode switch: VENT
Set temperature:
18°C (65°F)
Approximately 12
Except above
Approximately 0
18
Intake door position switch
Intake door position
20% FRESH or RECIR-
CULATION
Approximately 0
FRESH
Approximately 4.6
19
Intake door position switch
Intake door position
FRESH or RECIRCULA-
TION
Approximately 0
20% FRESH
Approximately 4.6
20
Multiplex communication (CLK) signal
—
—
21
Power supply for mode door motor,
air mix door motor and bi-level door
motor
—
Approximately 12
22
Compressor ON signal
Compressor
ON
Approximately 0
OFF
Approximately 4.6
23
IACV-FICD solenoid valve
Ambient air temperature
Above 23.5°C
(74.3°F)
Approximately 0
Below 20.5°C
(68.9°F)
Approximately 12
24
Power supply for BAT.
—
Approximately 12
25
Power supply for IGN.
—
Approximately 12
26
Power supply for intake door motor
Recirculation switch
OFF
,
ON
*1
32
Ground
—
Approximately 0
TROUBLE DIAGNOSES
Auto Amp. Terminals and Reference Value
(Cont’d)
HA-84
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