Infiniti G20 (P11). Manual — part 426
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8
CHECK ACTUATORS
Refer to the following chart and confirm discharge air flow, air temperature, blower motor voltage and compressor opera-
tion.
Checks must be made visually, by listening to any noise, or by touching air outlets with your hand, etc. for
improper operation.
MTBL0375
MTBL0128
OK or NG
OK
©
GO TO 9.
NG
©
I
Air outlet does not change.
Go to “Mode Door Motor” (HA-48).
I
Intake door does not change.
Go to “Intake Door Motor” (HA-58).
I
Blower motor operation is malfunctioning.
Go to “Blower Motor” (HA-65).
I
Magnet clutch does not engage.
Go to “Magnet Clutch” (HA-73).
I
Discharge air temperature does not change.
Go to “Air Mix Door Motor” (HA-54).
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
AUTO
Self-diagnosis (Cont’d)
HA-35
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9
STEP 5 - TEMPERATURE OF EACH SENSOR IS CHECKED
Press
(HOT) switch.
Code No.
appears on the display.
RHA492A
©
GO TO 10.
10
CHECK AMBIENT SENSOR
Press
(DEF) switch one time, temperature detected by ambient sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual temperature, check sensor circuit first, then inspect sensor.
RHA499G
OK or NG
OK
©
GO TO 11.
NG
©
Go to Ambient Sensor Circuit (HA-92).
TROUBLE DIAGNOSES
AUTO
Self-diagnosis (Cont’d)
HA-36
![](/vehicles/zatt/wheiso/zix/zyowini.png)
11
CHECK IN-VEHICLE SENSOR
Press
(DEF) switch the second time, temperature detected by in-vehicle sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual temperature, check sensor circuit first, then inspect sensor.
RHA500G
OK or NG
OK
©
GO TO 12.
NG
©
Go to In-vehicle Sensor Circuit (HA-95).
12
CHECK INTAKE SENSOR
Press
(DEF) switch the third time, temperature detected by intake sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual temperature, check sensor circuit first, then inspect sensor.
RHA500G
OK or NG
OK
©
1. Press
(DEF) switch the fourth time. Display returns to original presentation 5.
2. Turn ignition switch OFF or
(AUTO) switch ON.
3. END
NG
©
Go to Intake Sensor Circuit (HA-102).
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
AUTO
Self-diagnosis (Cont’d)
HA-37
![](/vehicles/zatt/wheiso/zix/eve.png)
13
CHECK MALFUNCTIONING SENSOR
Refer to the following chart for malfunctioning code No.
(If two or more sensors malfunction, corresponding code Nos. blink respectively two times.)
MTBL0083
*1: Conduct self-diagnosis STEP 2 under sunshine.
When conducting indoors, aim a light (more than 60W) at sunload sensor, otherwise Code No.
will indicate despite that
sunload sensor is functioning properly.
*2: HA-92
*3: HA-95
*4: HA-102
*5: HA-99
*6: HA-104
RHA455G
RHA501A
©
INSPECTION END
TROUBLE DIAGNOSES
AUTO
Self-diagnosis (Cont’d)
HA-38
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