ESP NISSAN 350Z 2007 Z33 Automatic Air Conditioner Workshop Manual

PREPARATION
ATC-17
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Revision: 2006 November2007 350Z
(J-43926)
Refrigerant dye leak detection kit
Kit includes:
(J-42220)
UV lamp and UV safety goggles
(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce
bottle
(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles)
(J-43872)
Refrigerant dye cleanerPower supply:
DC 12 V (Battery terminal)
(J-42220)
UV lamp and UV safety gogglesPower supply:
DC 12 V (Battery terminal)
For checking refrigerant leak when
fluorescent dye is installed in A/C
system
Includes:
UV lamp and UV safety goggles
(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles)Application:
For HFC-134a (R-134a) PAG oil
Container:
1/4 ounce (7.4 cc) bottle
(Includes self-adhesive dye
identification labels for affixing to
vehicle after charging system with
dye.)
(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce
bottleFor injecting 1/4 ounce of fluorescent
leak detection dye into A/C system
(J-43872)
Refrigerant dye cleanerFor cleaning dye spills
(J-39183)
Manifold gauge set (with hoses
and couplers)Identification:

The gauge face indicates HFC-134a
(R-134a).
Fitting size: Thread size

1/2″-16 ACME Tool number
(Kent-Moore No.)
Tool nameDescription
ZHA200H
SHA438F
SHA439F
SHA440F
SHA441F
RJIA0196E

AIR CONDITIONER CONTROL
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Revision: 2006 November2007 350Z
OPERATION
The unified meter and A/C amp. receives data from each of the sensors. The unified meter and A/C amp.
sends mode door, air mix door and intake door opening angle data to the mode door motor LCU, air mix door
motor LCU and intake door motor LCU.
The mode door motor, air mix door motor and intake door motor read their respective signals according to the
address signal. Opening angle indication signals received from the unified meter and A/C amp. and each of
the motor position sensors is compared by the LCUs in each motor with the existing decision and opening
angles. Subsequently, HOT/COLD, DEF/VENT and FRE/REC operation is selected. The new selection data
are returned to the unified meter and A/C amp.
TRANSMISSION DATA AND TRANSMISSION ORDER
Unified meter and A/C amp. data is transmitted consecutively to each of the door motors following the form
shown in figure below.
Start:
Initial compulsory signal sent to each of the door motors.
Address:
Data sent from the unified meter and A/C amp. are selected according to data-based decisions made by the
air mix door motor, mode door motor and intake door motor.
If the addresses are identical, the opening angle data and error check signals are received by the door motor
LCUs. The LCUs then make the appropriate error decision. If the opening angle data have no error, door con-
trol begins.
If an error exists, the received data are rejected and corrected data received. Finally, door control is based
upon the corrected opening angle data.
Opening Angle:
Data that shows the indicated door opening angle of each door motor.
Error Check:
In this procedure, transmitted and received data are checked for errors. Error data are then compiled. The
error check prevents corrupted data from being used by the air mix door motor, the mode door motor and the
intake door motor. Error data can be related to the following symptoms.

Malfunction of electrical frequency

Poor electrical connections

Signal leakage from transmission lines

Signal level fluctuation
SJIA0264E

TROUBLE DIAGNOSIS
ATC-49
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Revision: 2006 November2007 350Z
9. CHECK MALFUNCTIONING SENSOR AND DOOR MOTOR
Refer to the following chart.
*1: Perform self-diagnosis STEP-2 under sunshine.
When performing indoors, aim a light (more than 60 W) at sunload
sensor, otherwise LED of A/C switch will not indicate despite that
sunload sensor is functioning properly.
NOTE:
When switched to STEP-2, LED of REC position blinks for approxi-
mately 25 seconds.
*2: AT C - 9 2 , "
DIAGNOSIS PROCEDURE FOR AMBIENT SENSOR" .
*3: AT C - 9 5 , "
DIAGNOSIS PROCEDURE FOR IN-VEHICLE SENSOR" .
*4: AT C - 9 7 , "
DIAGNOSIS PROCEDURE FOR SUNLOAD SENSOR" .
*5: ATC-100, "
DIAGNOSIS PROCEDURE FOR INTAKE SENSOR" .
*6: AT C - 6 5 , "
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR MOTOR PBR" .
>> INSPECTION END
10. CHECK MALFUNCTIONING DOOR MOTOR POSITION SWITCH
Mode and/or intake door motor PBR(s) is/are malfunctioning.
NOTE:
When switched to STEP-3, LED of REC position blinks for approxi-
mately 50 seconds.
*1: AT C - 6 2 , "
DIAGNOSIS PROCEDURE FOR MODE DOOR
MOTOR" .
*2: AT C - 6 8 , "
DIAGNOSIS PROCEDURE FOR INTAKE DOOR
MOTOR" .
>> INSPECTION END
S J I A 111 5 E
Mode control dial position Unusual Malfunctioning sensor and door motor (Including circuits) Reference page
VENT
A/C LED: OFFAmbient sensor *2
B/L In-vehicle sensor *3
FOOT or FOOT2
Sunload sensor
*1*4
D/F or D/F2 Intake sensor *5
DEF Air mix door motor (LCU) PBR *6
Unusual Mode or intake door position Reference page
REC LED: ON Mode door motor *1
FRE LED: ON Intake door motor *2
S J I A 111 6 E

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
SYSTEM DESCRIPTION
Component Parts
Mode door control system components are:

Unified meter and A/C amp.

Mode door motor (LCU)

A/C LAN system (PBR built-in mode door motor, air mix door motor and intake door motor)

In-vehicle sensor

Ambient sensor

Sunload sensor

Intake sensor
System Operation
The unified meter and A/C amp. receives data from each of the sensors. The unified meter and A/C amp.
sends air mix door, mode door and intake door opening angle data to the air mix door motor LCU, mode door
motor LCU and intake door motor LCU.
The air mix door motor, mode door motor and intake door motor read their respective signals according to the
address signal. Opening angle indication signals received from the unified meter and A/C amp. and each of
the motor position sensors are compared by the LCUs in each door motor with the existing decision and open-
ing angles. Subsequently, HOT/COLD, DEF/VENT and FRE/REC operation is selected. The new selection
data are returned to the unified meter and A/C amp.
Mode Door Control Specification
*10ATC-56, "DIAGNOSIS PROCE-
DURE FOR LAN CIRCUIT"
*11AT C - 11 6 , "MODE DOOR MOTOR"*12AT C - 3 4 , "SYMPTOM TABLE"
*13ATC-100, "Intake Sensor Circuit"
RJIA1380E
RJIA1778E

ATC-64
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
SYSTEM DESCRIPTION
Component Parts
Air mix door control system components are:

Unified meter and A/C amp.

Air mix door motor (LCU)

A/C LAN system (PBR built-in mode door motor, air mix door motor and intake door motor)

In-vehicle sensor

Ambient sensor

Sunload sensor

Intake sensor
System Operation
The unified meter and A/C amp. receives data from each of the sensors. The unified meter and A/C amp.
sends air mix door, mode door and intake door opening angle data to the air mix door motor LCU, mode door
motor LCU and intake door motor LCU.
The air mix door motor, mode door motor and intake door motor read their respective signals according to the
address signal. Opening angle indication signals received from the unified meter and A/C amp. and each of
the motor position sensors are compared by the LCUs in each door motor with the existing decision and open-
ing angles. Subsequently, HOT/COLD, DEF/VENT and FRE/REC operation is selected. The new selection
data are returned to the unified meter and A/C amp.
Air Mix Door Control Specification
RJIA1382E
RJIA1782E

DUCTS AND GRILLES
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Revision: 2006 November2007 350Z
DUCTS AND GRILLESPFP:27860
Removal and InstallationNJS0001T
COMPONENT LAYOUT
REMOVAL
Removal of Center Ventilator Grilles
1. Remove instrument driver and passenger panel upper. Refer to IP-10, "INSTRUMENT PANEL ASSEM-
BLY" .
2. Remove mounting screws, and then remove center ventilator
grilles.
1. Defroster nozzle 2. Side defroster duct 1 (left) 3. Side ventilator duct 1 (left)
4. Side defroster duct 2 (left) 5. Instrument side finisher (left) 6. Side ventilator duct 2 (left)
7. Side ventilator grille (left) 8. Center ventilator grille (left) 9. Center ventilator grille (right)
10. Side ventilator grille (right) 11. Side ventilator duct 2 (right) 12. Instrument side finisher (right)
13. Instrument panel 14. Side defroster duct 2 (right) 15. Side ventilator duct 1 (right)
16. Side defroster duct 1 (right) 17. Center ventilator duct
RJIA1423E
RJIA1424E

REFRIGERANT LINES
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Revision: 2006 November2007 350Z
REFRIGERANT LINESPFP:92600
HFC-134a (R-134a) Service ProcedureNJS0001U
SETTING OF SERVICE TOOLS AND EQUIPMENT
Discharging Refrigerant
WARNING:
Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from A/C system using certified service equipment meeting
requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment] or J-2209 [HFC-134a (R-134a)
recovery equipment]. If accidental system discharge occurs, ventilate work area before resuming ser-
vice. Additional health and safety information may be obtained from refrigerant and lubricant manu-
facturers.
Evacuating System and Charging Refrigerant
WJIA0614E
WJIA0615E