NISSAN TEANA 2003 Service Manual

AIR CONDITIONER CONTROL
ATC-33
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AT C

CAN Communication System DescriptionBJS000FQ
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-4,
"CAN Communication System" .

ATC-34
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TROUBLE DIAGNOSISPFP:00004
CONSULT-II Function (BCM)BJS000FR
CONSULT-II can display each diagnosis item using the diagnosis mode shown following.
CONSULT-II BASIC OPERATION
Refer to GI-34, "CONSULT-II Start Procedure" .
DATA MONITOR
Operation Procedure
1. Touch “AIR CONDITIONER” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on “DATA MONITOR” screen.
4. When “SELECTION FROM MENU” is selected, touch items to be monitored. When “ALL SIGNALS” is
selected, all the items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the monitored item can be recorded. To stop
recording, touch “STOP”.
Display Item List
System part Check item, diagnosis mode Description
BCM Data monitor Displays BCM input data in real time.
All signals Monitors all the items.
Selection from menu Selects and monitors the individual item selected.
Monitor item name “operation
or unit”Contents
IGN ON SW “ON/OFF” Displays “IGN position (ON)/OFF, ACC position (OFF)” status as judged from ignition switch signal.
FAN ON SIG “ON/OFF” Displays “FAN (ON)/FAN (OFF)” status as judged from blower fan motor switch signal.
AIR COND SW “ON/OFF” Displays “COMP (ON)/COMP (OFF)” status as judged from air conditioner switch signal.

TROUBLE DIAGNOSIS
ATC-35
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How to Perform Trouble Diagnosis for Quick and Accurate RepairBJS000FS
WORK FLOW
SYMPTOM TABLE
*1AT C - 5 4 , "Operational Check"
SHA900E
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System.ATC-56, "
Power
Supply and
Ground Circuit for
Auto Amp."
A/C system cannot be controlled.
Go to Integrated Display System.

Go to Integrated Color Display System.AV- 5 8 , "
Unable to
Operate System
with A/C and AV
Switch" (Inte-
grated display sys-
tem), AV-97,
"Unable to Oper-
ate System with A/
C and AV Switch"
(Integrated color
display system)
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor. (LAN)AT C - 6 3 , "
Mode
Door Motor Cir-
cuit"Mode door motor does not operate normally.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor. (LAN)ATC-66, "
Air Mix
Door Motor Cir-
cuit"Air mix door motor does not operate nor-
mally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor. (LAN)AT C - 6 9 , "
Intake
Door Motor Cir-
cuit" Intake door motor does not operate normally.
Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor.ATC-72, "
Blower
Motor Circuit"
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.AT C - 7 8 , "Magnet
Clutch Circuit"
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.AT C - 8 4 , "Insuffi-
cient Cooling"
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.AT C - 9 1 , "Insuffi-
cient Heating"
Noise Go to Trouble Diagnosis Procedure for Noise.ATC-92, "Noise"
Self-diagnosis cannot be performed. Go to Trouble Diagnosis Procedure for Self-diagnosis.AT C - 9 4 , "Self-
diagnosis"
Memory function does not operate. Go to Trouble Diagnosis Procedure for Memory Function.AT C - 9 5 , "Memory
Function"

ATC-36
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Component Parts and Harness Connector LocationBJS000FT
ENGINE COMPARTMENT
RJIA2730E

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ATC-37
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PASSENGER COMPARTMENT
RJIA3238E

ATC-38
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SchematicBJS000FU
TJWM0261E

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ATC-39
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Wiring Diagram — A/C —BJS000FV
TJWM0106E

ATC-40
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TJWM0262E

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ATC-41
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TJWH0045E

ATC-42
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TJWM0263E