Infiniti Q45 (FY33). Manual — part 467
RHA335H
PROCEDURE (With navigation system):
1. Check Memory Function
1.
Set the temperature 85°F or 32°C.
2.
Press OFF switch.
3.
Turn the ignition off.
4.
Turn the ignition on.
5.
Press the AUTO switch.
6.
Confirm that the set temperature remains at previous tempera-
ture.
7.
Press OFF switch.
RHA329H
2. Check Blower
1.
Press fan switch (up side) one time.
Blower should operate on low speed.
The fan symbol should have one blade lit
.
2.
Press fan switch (up side) one more time, and continue check-
ing blower speed and fan symbol until all speeds are checked.
3.
Leave blower on MAX speed
.
RHA330H
3. Check Discharge Air
1.
Press MODE switch four times and DEF button.
2.
Each position indicator should change shape.
RHA167F
3.
Confirm that discharge air comes out according to the air dis-
tribution table at left.
Refer to “Discharge Air Flow” HA-27.
NOTE:
Confirm that the compressor clutch is engaged (visual inspection)
and intake door position is at FRESH when the DEF
is
selected.
Intake door position is checked in the next step.
RHA331H
4. Check Recirculation
1.
Press REC
switch.
Recirculation indicator should illuminate.
2.
Listen for intake door position change (you should hear blower
sound change slightly).
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
EL
IDX
TROUBLE DIAGNOSES
Operational Check (Cont’d)
HA-33
RHA332H
5. Check Temperature Decrease
I
Turn the temperature dial counterclockwise until 18°C (65°F)
is displayed.
I
Check for cold air at discharge air outlets.
SHA278F
6. Check Temperature Increase
I
Turn the temperature dial clockwise until 32°C (85°F) is dis-
played.
I
Check for hot air at discharge air outlets.
RHA333H
7. Check ECON (Economy) Mode
1.
Set the temperature 75°F or 25°C.
2.
Press ECON switch.
3.
Display should indicate ECON (no AUTO).
Confirm that the compressor clutch is not engaged (visual
inspection).
(Discharge air and blower speed will depend on ambient, in-
vehicle and set temperatures.)
RHA334H
8. Check AUTO Mode
1.
Press AUTO switch.
2.
Display should indicate AUTO (no ECON).
Confirm that the compressor clutch engages (audio or visual
inspection).
(Discharge air and blower speed will depend on ambient, in-
vehicle and set temperatures.)
SHA286H
9. Check Ambient Display
1.
Press AUTO switch.
2.
Press AMB switch.
3.
Display should show the outside (ambient) temperature for
approximately 5 seconds.
TROUBLE DIAGNOSES
Operational Check (Cont’d)
HA-34
If all operational check are OK (symptom can not be duplicated),
go to “Incident Simulation Tests” (GI section) and perform tests as
outlined to simulate driving conditions environment. If symptom
appears, refer to “Symptom Chart” (HA-36) and perform applicable
trouble diagnosis procedures.
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
EL
IDX
TROUBLE DIAGNOSES
Operational Check (Cont’d)
HA-35
Symptom Chart
DIAGNOSTIC TABLE
PROCEDURE
Self-diagnosis
Preliminary Check
Diagnostic Procedure
SYMPTOM
DIAGNOSTIC
ITEM
AND
REFERENCE
P
AGE
STEP
1
(HA-38)*1
(HA-45)*2
STEP
2
(HA-39)*1
(HA-46)*2
STEP
3
(HA-40)
STEP
4
(HA-41)
STEP
5
(HA-41)*1
(HA-49)*2
AUXILIAR
Y
MECHANISM
(HA-43)
Preliminary
Check
1
(HA-55)
Preliminary
Check
2
(HA-56)
Preliminary
Check
3
(HA-57)
Preliminary
Check
4
(HA-58)
Preliminary
Check
5
(HA-59)
Preliminary
Check
6
(HA-60)
Preliminary
Check
7
(HA-61)
Preliminary
Check
8
(HA-62)
Self-diagnosis
circuit
(HA-88)
Multiplex
communication
circuit
(HA-89)*2
Ambient
sensor
circuit
(HA-90)
In-vehicle
sensor
circuit
(HA-93)
Intake
sensor
circuit
(HA-96)
Sunload
sensor
circuit
(HA-97)
Intake
door
motor
circuit
(HA-109)
LAN
system
circuit
(HA-106)
Blower
motor
circuit
(HA-1
Magnet
clutch
circuit
(HA-1
Rear
vent
door
motor
circuit
(HA-122)
Air outlet does not change.
q
q
q
q
q
q
q
q
q
q
q
q
q
Intake door does not change.
q
q
q
q
q
q
q
q
q
q
q
q
Insufficient cooling
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
Insufficient heating
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
Blower motor operation is malfunctioning.
q
q
q
q
q
q
q
q
q
q
q
Magnet clutch does not engage.
q
q
q
q
q
q
q
q
q
q
q
Discharged air temperature does not change.
q
q
q
q
q
q
q
q
q
q
q
Noise
Mode door motor does not operate normally.
q
q
q
q
q
q
q
q
q
q
Air mix door motor does not operate normally.
q
q
q
q
q
q
q
q
q
q
q
Bi-level door motor does not operate normally.
q
q
q
q
q
q
q
q
q
q
Intake door motor does not operate normally.
q
q
q
q
q
q
q
q
q
q
q
Blower motor operation is malfunctioning under out
of Starting Fan Speed Control.
q
q
q
q
q
q
q
q
q
q
q
Magnet clutch does not operate after performing Pre-
liminary Check 6.
q
q
q
q
Rear ventilator door motor does not operate nor-
mally.
q
q
q
q
q
q
q
q
q
Self-diagnosis cannot be performed.
Memory function does not operate.
ECON mode does not operate.
Multiplex communication error.
,
: The number means checking order.
q
: As for the order of inspection, refer to each flow chart. (It depends on malfunctioning portion.)
*1: Without navigation system
*2: With navigation system
TROUBLE DIAGNOSES
HA-36
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