Nissan Murano Z51 (2008 year). Manual — part 228
FLUORESCENT LEAK DETECTOR
HAC-123
< PRECAUTION >
[WITHOUT 7 INCH DISPLAY]
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FLUORESCENT LEAK DETECTOR
General Precautions
INFOID:0000000003073116
CAUTION:
• The A/C system contains a fluorescent leak detection dye used for locating refrigerant leakages. An
ultraviolet (UV) lamp is required to illuminate the dye when inspecting for leakages.
• Always wear fluorescence enhancing UV safety goggles to protect eyes and enhance the visibility of
the fluorescent dye.
• The fluorescent dye leak detector is not a replacement for an electrical leak detector (SST: J-41995).
The fluorescent dye leak detector should be used in conjunction with an electrical leak detector
(SST: J-41995) to pin-point refrigerant leakages.
• Read and follow all manufacture operating instructions and precautions prior to performing the work
for the purpose of safety and customer satisfaction.
• A compressor shaft seal should not necessarily be repaired because of dye seepage. The compres-
sor shaft seal should only be repaired after confirming the leakage with an electrical leak detector
(SST: J-41995).
• Always remove any remaining dye from the leakage area after repairs are completed to avoid a mis-
diagnosis during future service.
• Never allow dye to come into contact with painted body panels or interior components. Clean imme-
diately with the approved dye cleaner if dye is spilled. Fluorescent dye left on a surface for an
extended period of time cannot be removed.
• Never spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).
• Never use more than one refrigerant dye bottle (1/4 ounce /7.4 cc) per A/C system.
• Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Never use
HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system, or CFC-12 (R-12) leak detection
dye in HFC-134a (R-134a) A/C system, or A/C system damage may result.
• The fluorescent properties of the dye remains for three or more years unless a compressor malfunc-
tion occurs.
IDENTIFICATION
NOTE:
Vehicles with factory installed fluorescent dye have a green label.
Vehicles without factory installed fluorescent dye have a blue label.
IDENTIFICATION LABEL FOR VEHICLE
Vehicles with factory installed fluorescent dye have an identification label on the front side of hood.
Revision: 2008 October
2009 Murano
HAC-124
< BASIC INSPECTION >
[WITH 7 INCH DISPLAY]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
INFOID:0000000003469237
OVERALL SEQUENCE
.
HAC-222, "Diagnosis Chart By Symptom"
DETAILED FLOW
1.
OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.
>> GO TO 2.
2.
VERIFY SYMPTOM
Verify the symptom with operational check based on the information obtained from the customer. Refer to
HAC-126, "Description & Inspection"
>> GO TO 3.
JSIIA0943GB
Revision: 2008 October
2009 Murano
DIAGNOSIS AND REPAIR WORKFLOW
HAC-125
< BASIC INSPECTION >
[WITH 7 INCH DISPLAY]
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3.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC. Refer to
Are self-diagnosis results normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
NARROW DOWN THE MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS
Perform symptom diagnosis and narrow down the malfunctioning parts. Refer to
>> GO TO 5.
5.
REPAIR OR REPLACE
Repair or replace malfunctioning parts.
NOTE:
If DTC is displayed, erase DTC after repairing or replacing malfunctioning parts.
>> GO TO 6.
6.
FINAL CHECK
Check that the A/C system operates normally.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 3.
Revision: 2008 October
2009 Murano
HAC-126
< BASIC INSPECTION >
[WITH 7 INCH DISPLAY]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
Description & Inspection
INFOID:0000000003609250
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 dial (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
>> Memory function malfunction:
HAC-231, "Inspection procedure"
2.
CHECK BLOWER MOTOR SPEED
1.
Start the engine.
2.
Operate the fan control dial. Check that the fan speed changes. Check the operation for all fan speeds.
3.
Set the fan speed to speed 7.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Blower motor system malfunction:
HAC-187, "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 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
>> Mode door system malfunction:
HAC-180, "Diagnosis Procedure"
4.
CHECK DISCHARGE AIR (UPPER VENT SWITCH)
1.
Press the UPPER VENT switch.
2.
The UPPER VENT switch indicator is turned ON.
Conditions
: Engine running at normal operating temperature
Revision: 2008 October
2009 Murano
INSPECTION AND ADJUSTMENT
HAC-127
< BASIC INSPECTION >
[WITH 7 INCH DISPLAY]
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3.
Check that the air blown from UPPER VENT does not greatly deviate from the air mix ratio.
4.
Press the UPPER VENT switch again.
5.
The UPPER VENT switch indicator is turned OFF.
6.
The air blown from the UPPER VENT stops.
Does it operate normally?
YES
>> GO TO 5.
NO
>> Upper ventilator door system malfunction:
HAC-185, "Diagnosis Procedure"
.
5.
CHECK INTAKE AIR
1.
Press the intake switch. Indicator is turned ON (REC).
2.
Press the intake switch again. Indicator is turned OFF (FRE).
3.
Listen for the intake door position change. (Slight change of blower sound can be heard.)
NOTE:
Confirm that the 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 6.
NO
>> Intake door system malfunction:
HAC-183, "Diagnosis Procedure"
.
6.
CHECK A/C SWITCH
1.
Press the A/C switch.
2.
The A/C switch indicator is turned ON.
Confirm that the compressor clutch engages (sound or visual inspection).
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Magnet clutch system malfunction:
HAC-191, "Diagnosis Procedure"
7.
CHECK WITH TEMPERATURE SETTING LOWERED
1.
Operate the 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 8.
NO
>> Insufficient cooling:
HAC-223, "Inspection procedure"
8.
CHECK WITH TEMPERATURE SETTING RAISED
1.
Operate the temperature control dial (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 9.
NO
>> Insufficient heating:
HAC-226, "Inspection procedure"
JPIIA0509GB
Revision: 2008 October
2009 Murano
HAC-128
< BASIC INSPECTION >
[WITH 7 INCH DISPLAY]
INSPECTION AND ADJUSTMENT
9.
CHECK LH/RH INDEPENDENT TEMPERATURE ADJUSTMENT FUNCTION
1.
Press the DUAL switch, and then check that “DUAL” is shown on the display.
2.
Operate the temperature control dial (driver side). Check that the discharge air temperature (driver side)
changes.
3.
Operate the temperature control dial (passenger side). Check that the discharge air temperature (passen-
ger side) changes.
4.
Press the DUAL switch, and then check that the temperature setting (LH/RH) is unified to the driver side
temperature setting.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Refer to
HAC-222, "Diagnosis Chart By Symptom"
and perform the appropriate diagnosis.
10.
CHECK AUTO MODE
1.
Press the AUTO switch, and then check that “AUTO” is shown on the display.
2.
Operate the temperature control dial (driver side). Check that the fan speed or outlet changes (the dis-
charge air temperature or fan speed varies depending on the ambient temperature, in-vehicle tempera-
ture, and temperature setting).
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Refer to
HAC-222, "Diagnosis Chart By Symptom"
and perform the appropriate diagnosis.
Temperature Setting Trimmer
INFOID:0000000003469243
Description
If the temperature felt by the customer is different than the air flow 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-III, perform “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC.
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:0000000003469244
Description
In the FOOT mode, the air blowing to the DEF can be turned ON/OFF.
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
Revision: 2008 October
2009 Murano
INSPECTION AND ADJUSTMENT
HAC-129
< BASIC INSPECTION >
[WITH 7 INCH DISPLAY]
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How to set
Using CONSULT-III, perform “BLOW SET” on “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:0000000003469245
Description
• If the ignition switch is turned to the OFF position while the FRE switch is set to ON (fresh air intake), “Per-
form the memory” or “Do not perform the memory” of the FRE switch ON (fresh air intake) condition can be
selected.
• If “Perform the memory” was set, the FRE switch will be ON (fresh air intake) 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-III, perform “FRE MEMORY SET” on “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
FRE switch memory function may be cancelled.
Inlet Port Memory Function (REC)
INFOID:0000000003469246
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) condition 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-III, perform “REC MEMORY SET” on “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
DEF door position
Auto control
Manual control
BLOW SET
Mode 1
OPEN
CLOSE
Mode 2 (initial status)
OPEN
OPEN
Mode 3
CLOSE
OPEN
Mode 4
CLOSE
CLOSE
Work support items
Display
Setting
FRE MEMORY SET
WITHOUT
Perform the memory of manual FRE
WITH (initial status)
Do not perform the memory of manual FRE (auto
control)
Work support items
Display
Setting
REC MEMORY SET
WITHOUT (initial status)
Perform the memory of manual REC
WITH
Do not perform the memory of manual REC (auto
control)
Revision: 2008 October
2009 Murano
HAC-130
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
COMPRESSOR CONTROL FUNCTION
FUNCTION DIAGNOSIS
COMPRESSOR CONTROL FUNCTION
Description
INFOID:0000000003469251
PRINCIPLE OF OPERATION
Compressor is not activated.
Functional circuit diagram
Functional initial inspection chart
×
: Applicable
CAN (1)
: A/C switch signal
: Blower fan motor switch signal
CAN (2)
: A/C compressor request signal
JPIIA0484GB
Control unit
Diagnosis item
Location
A
B
C
D
A/C auto amp.
“HVAC”
Self-diagnosis
×
—
—
—
Data monitor
×
—
—
—
Active test
×
—
—
×
ECM
“ENGINE”
Self-diagnosis function
(CAN system diagnosis)
—
—
×
—
Data monitor
—
×
×
—
IPDM E/R
“IPDM E/R”
Self-diagnosis function
(CAN system diagnosis)
—
—
—
×
Data monitor
—
—
×
—
Auto active test
—
—
—
×
Revision: 2008 October
2009 Murano
COMPRESSOR CONTROL FUNCTION
HAC-131
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
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Fail-Safe
INFOID:0000000003469252
FAIL-SAFE FUNCTION
• If a communication error exists between the A/C auto amp., and the AV control unit and preset switch for 30
seconds or longer, air conditioner is controlled under the following conditions:
Component Part Location
INFOID:0000000003469253
ENGINE COMPARTMENT
Compressor
: ON
Air outlet
: AUTO
Air inlet
: FRE (Fresh)
Blower fan speed
: AUTO
Set temperature
: Setting before communication error occurs
Revision: 2008 October
2009 Murano
HAC-132
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
COMPRESSOR CONTROL FUNCTION
PASSENGER COMPARTMENT
1.
Refrigerant pressure sensor
2.
Compressor (magnet clutch)
3.
Ambient sensor
JPIIA0607ZZ
Revision: 2008 October
2009 Murano
COMPRESSOR CONTROL FUNCTION
HAC-133
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
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1.
Intake door motor
2.
Upper ventilator door motor
3.
Air mix door motor (passenger side)
4.
Air mix door motor (driver side)
5.
Mode door motor
6.
Sunload sensor
7.
In-vehicle sensor
8.
A/C auto amp.
9.
Intake sensor
10. Blower motor
JPIIA0608ZZ
Revision: 2008 October
2009 Murano
HAC-134
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
COMPRESSOR CONTROL FUNCTION
Component’s Role
INFOID:0000000003469254
Component
Reference
Refrigerant pressure sensor
Compressor
Ambient sensor
Intake door motor
Upper ventilator door motor
Air mix door motor (driver side)
Air mix door motor (passenger side)
Mode door motor
Sunload sensor
In-vehicle sensor
A/C auto amp.
HAC-193, "A/C AUTO AMP. : Description"
Intake sensor
Blower motor
Revision: 2008 October
2009 Murano
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-135
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
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AUTOMATIC AIR CONDITIONER SYSTEM
System Diagram
INFOID:0000000003469259
CONTROL SYSTEM
The control system consists of input sensors, switches, the A/C auto amp. (microcomputer) and outputs. The
relationship of these components is as shown in the figure below:
System Description
INFOID:0000000003469260
CONTROL OPERATION
Display
The operation status of the system is displayed on the screen.
JSIIA1542GB
JPIIA0511GB
Revision: 2008 October
2009 Murano
HAC-136
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
AUTOMATIC AIR CONDITIONER SYSTEM
Preset Switch
MODE Switch
The air discharge outlets are controlled with this switch.
Temperature Control Dial (Driver Side)
The set temperature is increased or decreased with this dial.
Temperature Control Dial (Passenger Side)
• The set temperature is increased or decreased with this dial.
• When the temperature control dial is turned, DUAL switch indicator is turned ON.
AUTO Switch
• The compressor, intake doors, air mix doors, mode doors and blower speed are automatically controlled so
that the in-vehicle temperature will reach, and be maintained at the set temperature selected by the operator.
• When pressing the AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automati-
cally controlled.
Defroster (DEF) Switch
Mode doors are set to the defrost position with this switch. Also, intake doors are set to the outside air position,
and compressor turns ON.
UPPER VENT Switch
• When the UPPER VENT switch is pressed, the UPPER VENT switch indicator is turned ON.
• When the UPPER VENT switch indicator is turned ON, the UPPER VENT switch indicator is turned OFF by
pressing the defroster (DEF) switch (after the above operation, the UPPER VENT switch indicator is turned
ON by pressing the UPPER VENT switch).
A/C Switch
Compressor turns ON or OFF with this switch.
(Pressing the A/C switch when the A/C switch is ON turns OFF the A/C switch and compressor.)
Fan Control Dial
The blower speed is manually controlled with this dial. Seven speeds are available for manual control (as
shown on the display screen).
OFF Switch
Compressor and blower turn OFF, intake doors and the mode doors are automatically controlled.
Rear Window Defogger Switch
When indicator is ON, rear window is defogged.
Intake Switch
• When the intake switch is ON, the intake switch indicator is turned ON, and air inlet is set to REC.
• When the intake switch is pressed again, the intake switch indicator is turned OFF, and air inlet is set to FRE.
• When the intake switch is pressed for approximately 1.5 seconds or longer, the intake switch indicator lamps
blink twice. Then, automatic control mode is entered. Inlet status is displayed by indicator even when auto-
matically controlled.
JPIIA0488GB
Revision: 2008 October
2009 Murano
AUTOMATIC AIR CONDITIONER SYSTEM
HAC-137
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
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• When the intake switch indicator is turned OFF, shifting mode position to D/F or DEF, or when compressor is
turned from ON to OFF, intake switch is automatically turned OFF (set to FRE mode). REC mode can be re-
entered by pressing intake switch again, and then compressor is turned ON. (Except D/F or DEF position)
DUAL Switch
• When the DUAL switch indicator is ON, the driver side and passenger side, temperature can each be set
independently.
• When the DUAL switch indicator is OFF, the driver side outlet and setting temperature are applied to both
sides.
Revision: 2008 October
2009 Murano
HAC-138
< FUNCTION DIAGNOSIS >
[WITH 7 INCH DISPLAY]
AUTOMATIC AIR CONDITIONER SYSTEM
DISCHARGE AIR FLOW
JPIIA0512GB
Revision: 2008 October
2009 Murano
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