Nissan Maxima. Instruction — part 733
HAC-108
< BASIC INSPECTION >
[WITH MONOCHROME DISPLAY]
INSPECTION AND ADJUSTMENT
BASIC INSPECTION
INSPECTION AND ADJUSTMENT
Operational Check
INFOID:0000000010051105
DESCRIPTION
The purpose of the operational check is to check that the individual system operates normally.
INSPECTION PROCEDURE
1.
CHECK MEMORY FUNCTION
1. Start the engine.
2. Operate the temperature control switch (driver side) and raise the temperature setting to 32
°C (90°F).
3. Press the OFF switch.
4. Turn the ignition switch OFF.
5. Turn the ignition switch ON.
6. Press the AUTO switch.
7. Check that the temperature setting, before turning the ignition switch OFF, is stored.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check power and ground circuits for A/C auto amp. Refer to
HAC-165, "A/C AUTO AMP. : Diag-
.
2.
CHECK BLOWER MOTOR SPEED
1. Operate the fan control dial. Check that the fan speed changes.
2. Check the operation for all fan speeds.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check blower motor system. Refer to
HAC-157, "Diagnosis Procedure"
.
3.
CHECK DISCHARGE AIR (MODE SWITCH AND DEF SWITCH)
1. Press the MODE switch and the DEF switch.
2. Check that the air outlets change according to each indicated air outlet by placing a hand in front of the
outlets. Refer to
.
NOTE:
Confirm that the A/C compressor clutch is engaged (sound or visual inspection) and intake door position is at
FRE (
) when the D/F (
) or DEF (
) is selected.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Check mode door system. Refer to
HAC-153, "Diagnosis Procedure"
4.
CHECK INTAKE AIR
1. Press the REC (
) switch. Indicator is turned ON.
2. Press the FRE (
) switch. Indicator is turned ON.
3. Listen for the intake door position change. (Slight change of blower sound can be heard.)
NOTE:
Confirm that the A/C compressor clutch is engaged (sound or visual inspection) and the FRE (
) switch is
pressed when the D/F (
) or DEF (
) is selected.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Check intake door system. Refer to
HAC-156, "Diagnosis Procedure"
5.
CHECK A/C SWITCH
1. Press the A/C switch.
2. The A/C switch indicator is turned ON.
Conditions
: Engine running at normal operating temperature
INSPECTION AND ADJUSTMENT
HAC-109
< BASIC INSPECTION >
[WITH MONOCHROME DISPLAY]
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HAC
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Confirm that the A/C compressor clutch engages (sound or visual inspection).
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Check magnet clutch system. Refer to
HAC-161, "Diagnosis Procedure"
.
6.
CHECK TEMPERATURE DECREASE
1. Operate the A/C compressor.
2. Operate the temperature control switch (driver side) and lower the temperature setting to 18
°C (60°F).
3. Check that the cool air blows from the outlets.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Check for insufficient cooling. Refer to
HAC-183, "Component Function Check"
7.
CHECK TEMPERATURE INCREASE
1. Operate the temperature control switch (driver side) and raise the temperature setting to 32
°C (90°F) after
warming up the engine.
2. Check that the warm air blows from the outlets.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Check for insufficient heating. Refer to
HAC-189, "Component Function Check"
8.
CHECK DUAL MODE FUNCTION
1. Press the DUAL mode switch, and then check that “DUAL” is shown on the display.
2. Operate the temperature control switch (driver side). Check that the discharge air temperature (driver
side) changes.
3. Operate the temperature control switch (passenger side). Check that the discharge air temperature (pas-
senger side) changes.
4. Press the DUAL mode switch, and then check that the temperature setting (driver/passenger) is unified to
the driver side temperature setting.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Refer to
HA-25, "WITH MONOCHROME DISPLAY : Symptom Matrix Chart"
and perform the
appropriate diagnosis.
9.
CHECK AUTO MODE
1. Press the AUTO switch, and then check that “AUTO” is shown on the display.
2. Operate the temperature control switch (driver side). Check that the fan speed, outlet air or intake air
changes. The discharge air temperature or fan speed varies depending on the ambient temperature, in-
vehicle temperature, and temperature setting.
Is the inspection result normal?
YES
>> Inspection End
NO
>> Refer to
HA-25, "WITH MONOCHROME DISPLAY : Symptom Matrix Chart"
and perform the
appropriate diagnosis.
Temperature Setting Trimmer
INFOID:0000000010051106
Description
If the temperature felt by the customer is different than the airflow temperature controlled by the temperature
setting, the auto amplifier control temperature can be adjusted to compensate for the temperature setting.
How to set
Using CONSULT, perform “TEMP SET CORRECT” in “WORK SUPPORT” of HVAC.
HAC-110
< BASIC INSPECTION >
[WITH MONOCHROME DISPLAY]
INSPECTION AND ADJUSTMENT
NOTE:
• When the temperature setting is set to 25.0
°C (77°F) and −3.0°C (−6°F), the temperature controlled by auto amp is 25.0°C (77°F) −
3.0
°C (6°F) = 22.0°C (71°F) and the temperature becomes lower than the temperature setting.
• When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
difference between the temperature setting and control temperature may be cancelled.
Foot Position Setting Trimmer
INFOID:0000000010051107
Description
In the FOOT mode, the air blowing to the DEF can be turned ON/OFF.
How to set
Using CONSULT, perform “BLOW SET” in “WORK SUPPORT” of HVAC.
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V
or less, the setting of the discharge air mix ratio in FOOT mode may be cancelled.
Inlet Port Memory Function (FRE)
INFOID:0000000010051108
Description
• If the ignition switch is turned to the OFF position while the FRE (
) switch is set to ON (fresh air intake),
“Perform the memory” or “Do not perform the memory” of the FRE (
) switch ON (fresh air intake) con-
dition can be selected.
• If “Perform the memory” was set, the FRE (
) switch will be ON (fresh air intake) when turning the igni-
tion switch to the ON position again.
• If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-
tion switch to the ON position again.
How to set
Using CONSULT, perform “FRE MEMORY SET” in “WORK SUPPORT” of HVAC.
Work support items
Display (
°F)
Display (
°C)
TEMP SET CORRECT
6
3.0
5
2.5
4
2.0
3
1.5
2
1.0
1
0.5
0 (initial status)
0 (initial status)
−1
−0.5
−2
−1.0
−3
−1.5
−4
−2.0
−5
−2.5
−6
−3.0
Work support items
Display
DEF door position
Auto control
Instruction control
BLOW SET
Mode 1
OPEN
CLOSE
Mode 2 (initial status)
OPEN
OPEN
Mode 3
CLOSE
OPEN
Mode 4
CLOSE
CLOSE
INSPECTION AND ADJUSTMENT
HAC-111
< BASIC INSPECTION >
[WITH MONOCHROME DISPLAY]
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HAC
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NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
FRE switch memory function may be cancelled.
Inlet Port Memory Function (REC)
INFOID:0000000010051109
Description
• If the ignition switch is turned to the OFF position while the REC (
) switch is set to ON (recirculation),
“Perform the memory” or “Do not perform the memory” of the REC (
) switch ON (recirculation) condi-
tion can be selected.
• If “Perform the memory” was set, the REC (
) switch will be ON (recirculation) when turning the ignition
switch to the ON position again.
• If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-
tion switch to the ON position again.
How to set
Using CONSULT, perform “REC MEMORY SET” in “WORK SUPPORT” of HVAC.
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
REC switch memory function may be cancelled.
Work support items
Display
Setting
FRE MEMORY SET
WITHOUT
Perform the memory of instruction FRE
WITH (initial status)
Do not perform the memory of instruction FRE (auto
control)
Work support items
Display
Setting
REC MEMORY SET
WITHOUT (initial status)
Perform the memory of instruction REC
WITH
Do not perform the memory of instruction REC (auto
control)
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