display NISSAN TEANA 2003 Repair Manual

TROUBLE DIAGNOSIS
ATC-47
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FUNCTION CONFIRMATION PROCEDURE
1. SET IN SELF-DIAGNOSIS MODE
1. Turn ignition switch ON.
2. Set in self-diagnosis mode as follows. Within 10 seconds after starting engine (ignition switch is turned
ON.), press A/C switch for at least 5 seconds.
CAUTION:

Press A/C switch after indicating LED of intake switch.

If battery voltage drops below 12 V during diagnosis STEP-3, door motor speed becomes slower
and as a result, the system may generate an error even when operation is normal. To avoid this,
start engine before performing this diagnosis.

Former STEP-1 (LEDs and display screen are checked) does not exist in this self-diagnosis func-
tion.
>> GO TO 2.
2. STEP-2: SENSOR CIRCUITS ARE CHECKED FOR OPEN OR SHORT CIRCUIT
Does code No. 20 appear on the display?
YES >> GO TO 3.
NO >> GO TO 13.
3. CHECK TO ADVANCE SELF-DIAGNOSIS STEP-3
Press temperature control switch (UP, driver side).
Advance to self
-diagnosis STEP-3?
YES >> GO TO 4.
NO >> Replace A/C and AV switch. (Temperature control switch is malfunctioning.)
4. CHECK TO RETURN SELF-DIAGNOSIS STEP-2
Press temperature control switch (DOWN, driver side).
Return to self
-diagnosis STEP-2?
YES >> GO TO 5.
NO >> Malfunctioning A/C and AV switch or unified meter and A/C amp. Refer to AT C - 9 4 , "
Self-diagno-
sis" .
5. STEP-3: MODE DOOR AND INTAKE DOOR POSITIONS ARE CHECKED
Press temperature control switch (UP, driver side).
Does code No. 30 appear on the display?
YES >> GO TO 6.
NO >> GO TO 14.
RHA970DB
RHA869DD

ATC-48
TROUBLE DIAGNOSIS

6. STEP-4: OPERATION OF EACH DOOR MOTOR IS CHECKED
1. Press temperature control switch (UP, driver side).
2. Press (DEF) switch. Code No. of each door motor test is indi-
cated on the display.
>> GO TO 7.
7. CHECK ACTUATORS
Refer to the following chart and check discharge air flow, air temper-
ature, blower motor voltage and compressor operation.
Checks must be made visually, by listening the sound, or by touching air outlets with hand, etc. for improper
operation.
*1: FOOT position during automatic control. Refer to AT C - 5 3 , "
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER" .
OK or NG
OK >> GO TO 8.
NG >>

Air outlet does not change.
Go to Mode Door Motor Circuit. Refer to AT C - 6 3 , "
Mode Door Motor Circuit" .

Intake door does not change.
Go to Intake Door Motor Circuit. Refer to AT C - 6 9 , "
Intake Door Motor Circuit" .

Discharge air temperature does not change.
Go to Air Mix Door Motor Circuit. Refer to AT C - 6 6 , "
Air Mix Door Motor Circuit" .

Blower motor operation is malfunctioning.
Go to Blower Motor Circuit. Refer to AT C - 7 2 , "
Blower Motor Circuit" .

Magnet clutch does not engage.
Go to Magnet Clutch Circuit. Refer to AT C - 7 8 , "
Magnet Clutch Circuit" .
RHA495A
SJIA1002E
Code No. 41 42 43 44 45 46
Mode door position VENT B/L 1 B/L 2
FOOT
*1D/F DEF
Intake door position REC REC 20%FRE FRE FRE FRE
Air mix door position FULL COLD FULL COLD FULL HOT FULL HOT FULL HOT FULL HOT
Blower motor voltage 5 V 12 V 8.5 V 8.5 V 8.5 V 12 V
Compressor ON ON OFF OFF ON ON

TROUBLE DIAGNOSIS
ATC-49
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8. STEP-5: TEMPERATURE OF EACH SENSOR IS CHECKED
1. Press temperature control switch (UP, driver side).
2. Code No. 51 appears on the display.
>> GO TO 9.
9. CHECK AMBIENT SENSOR
Press (DEF) switch one time. Temperature detected by ambient
sensor is indicated on the display.
NOTE:
If the temperature indicated on the display greatly differs from the
actual temperature, check sensor circuit first, and then check sensor.
OK or NG
OK >> GO TO 10.
NG >> Go to Ambient Sensor Circuit. Refer to AT C - 9 6 , "
Ambi-
ent Sensor Circuit" .
10. CHECK IN-VEHICLE SENSOR
Press (DEF) switch for the second time. Temperature detected
by in-vehicle sensor is indicated on the display.
NOTE:
If the temperature indicated on the display greatly differs from the
actual temperature, check sensor circuit first, and then check sensor.
OK or NG
OK >> GO TO 11.
NG >> Go to In-vehicle Sensor Circuit. Refer to AT C - 9 9 , "
In-
vehicle Sensor Circuit" .
11 . CHECK INTAKE SENSOR
Press (DEF) switch for the third time. Temperature detected by
intake sensor is indicated on the display.
NOTE:
If the temperature indicated on the display greatly differs from the
actual temperature, check sensor circuit first, and then check sensor.
OK or NG
OK >> GO TO 12.
NG >> Go to Intake Sensor Circuit. Refer to ATC-105, "
Intake
Sensor Circuit" .
RJIA3240E
RJIA3241E
RJIA3242E

ATC-50
TROUBLE DIAGNOSIS

12. CHECK CAN COMMUNICATION ERROR
1. Press intake switch.
2. CAN communication error between the unified meter and A/C
amp. and the display unit or display control unit can be detected
as self-diagnosis results. (If plural errors occur, the display of
each error will blink twice for 0-5 second intervals.) .
OK or NG
OK >> 1. Turn ignition switch OFF or AUTO switch ON.
2. INSPECTION END
NG >> Go to CAN communication. Refer to LAN-49, "
CAN Sys-
tem Specification Chart" .

Unified meter and A/C amp. - Display unit or Display
control unit.
13. CHECK MALFUNCTIONING SENSOR
Refer to the following chart for malfunctioning code No.
(If two or more sensors malfunction, corresponding code Nos. blink respectively twice.)
*1: Perform self-diagnosis STEP-2 under sunshine.
When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise code No. 25 will indicate
despite that sunload sensor is functioning properly.
*2: AT C - 9 6 , "
DIAGNOSIS PROCEDURE FOR AMBIENT SENSOR" .
*3: ATC-100, "
DIAGNOSIS PROCEDURE FOR IN-VEHICLE SENSOR" .
*4: ATC-105, "
DIAGNOSIS PROCEDURE FOR INTAKE SENSOR" .
*5: ATC-102, "
DIAGNOSIS PROCEDURE FOR SUNLOAD SENSOR" .
*6: AT C - 6 8 , "
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR MOTOR PBR" .
>> INSPECTION END
RJIA1762E
Code No. Malfunctioning sensor (Including circuits) Reference page
21 / −21 Ambient sensor *2
22 / −22 In-vehicle sensor *3
24 / −24 Intake sensor *4
25 / −25
Sunload sensor
*1*5
26 / −26 Air mix door motor PBR (Driver side)
*6
27 / −27 Air mix door motor PBR (Passenger side)
PJIA0022E

TROUBLE DIAGNOSIS
ATC-51
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14. CHECK MALFUNCTIONING DOOR MOTOR POSITION SWITCH
Mode and/or intake door motor PBR(s) is/are malfunctioning.
(If two or more mode or intake doors are out of order, corresponding code numbers blink respectively twice.)
*1: If mode door motor harness connector is disconnected, the following display pattern will appear.
31 → 32 → 33 → 34 → 35 → 36 → Return to 31
*2: If intake door motor harness connector is disconnected, the following display pattern will appear.
37 → 38 → 39 → Return to 37
*3: FOOT position during automatic control. Refer to AT C - 5 3 , "
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER" .
*4: AT C - 6 5 , "
DIAGNOSIS PROCEDURE FOR MODE DOOR MOTOR" .
*5: AT C - 7 1 , "
DIAGNOSIS PROCEDURE FOR INTAKE DOOR MOTOR" .
>> INSPECTION END
Code No. *1 *2Mode or intake door position Reference page
31 VENT
Mode door motor *4 32 B/L 1
33 B/L 2
34
FOOT
*3
35 D/F
36 DEF
37 FRE
Intake door motor *5 38 20% FRE
39 REC
RJIA0494E

ATC-52
TROUBLE DIAGNOSIS

AUXILIARY MECHANISM: TEMPERATURE SETTING TRIMMER
The trimmer compensates for differences in range of ±3°C between temperature setting (displayed digitally)
and temperature felt by customer.
Operating procedures for this trimmer are as follows:
1. Begin Self-diagnosis STEP-5 mode. Refer to AT C - 4 6 , "
Self-diagnosis Function" .
2. Press fan control switch (UP) to set system in auxiliary mode.
3. Display shows “61” in auxiliary mechanism. It takes approximately 3 seconds to enable setting operation.
4. Press temperature control switch (driver side) as desired. Temperature will change at a rate of 0.5°C each
time a switch is pressed.
CAUTION:
A decimal point is not indicated during a setup of temperature compensation.
When battery cable is disconnected or battery voltage below 10 V, trimmer operation is canceled. Temperature
set becomes that of initial condition, i.e. 0°C.
PJIA0014E

TROUBLE DIAGNOSIS
ATC-53
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AUXILIARY MECHANISM: FOOT POSITION SETTING TRIMMER
Wind distribution ratio in FOOT mode can be set.
Operating procedures for this trimmer are as follows:
1. Begin self-diagnosis STEP-5 mode. Refer to AT C - 4 6 , "
Self-diagnosis Function" .
2. Press fan control switch (UP) to set system in auxiliary mode.
3. Display shows “61” in auxiliary mechanism. It takes approximately 3 seconds to enable setting operation.
4. Press mode switch as desired.
When battery cable is disconnected or battery voltage below 10 V, trimmer operation is canceled. Air distribu-
tion ratio set becomes that of initial condition.
AUXILIARY MECHANISM: INLET PORT MEMORY FUNCTION
When ignition switch is turned from OFF to ON, inlet port memory function at manual mode can be set.
Operating procedures for this trimmer are as follows:
1. Begin self-diagnosis STEP-5 mode. Refer to AT C - 4 6 , "
Self-diagnosis Function" .
2. Press fan control switch (UP) to set system in auxiliary mode.
3. Display shows “61” in auxiliary mechanism.
4. Press the intake switch as desired.
When battery cable is disconnected or battery voltage below 10 V, memory function is canceled. Memory func-
tion set becomes that of initial condition.
SJIA1580E
LED status of intake switch Setting status
Setting changeover
method
REC FRE REC FRE
ON OFFManual REC status is memorized.
(Initial setting)AUTO control (Initial setting)
Intake SW: ON ON ON Manual REC status is memorized. Manual FRE status is memorized.
OFF ON AUTO control Manual FRE status is memorized.
OFF OFF AUTO control AUTO control

ATC-54
TROUBLE DIAGNOSIS

Operational CheckBJS000FY
The purpose of the operational check is to confirm that the system operates properly.
CHECKING MEMORY FUNCTION
1. Press temperature control switch (UP, driver side) until 32°C is displayed.
2. Press fan control switch (DOWN) at least 2 seconds.
3. Turn ignition switch OFF.
4. Turn ignition switch ON.
5. Press AUTO switch.
6. Confirm that the set temperature remains at previous temperature.
7. Press fan control switch (DOWN) at least 2 seconds.
If NG, go to trouble diagnosis procedure for AT C - 9 5 , "
Memory Function" .
If OK, continue the check.
CHECKING BLOWER
1. Press fan control switch (UP). Blower should operate on low speed. The fan symbol should have one
blade lit.
2. Press fan control switch (UP) again, and continue checking blower speed and fan symbol until all speeds
are checked.
3. Leave blower on max. speed.
If NG, go to trouble diagnosis procedure for AT C - 7 2 , "
Blower Motor Circuit" .
If OK, continue the check.
CHECKING DISCHARGE AIR
1. Press MODE switch and DEF switch.
2. Each position indicator should change shape.
3. Confirm that discharge air comes out according to the air distri-
bution table. Refer to AT C - 3 1 , "
Discharge Air Flow" .
If NG, go to trouble diagnosis procedure for AT C - 6 3 , "
Mode Door
Motor Circuit" .
If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual
inspection) and intake door position is at FRESH when the DEF is
selected.
CHECKING INTAKE AIR
1. Press intake switch. Recirculation indicator should illuminate.
2. Press intake switch again. Fresh indicator should illuminate.
3. Listen for intake door position change (Slight change of blower sound can be heard.).
If NG, go to trouble diagnosis procedure for AT C - 6 9 , "
Intake Door Motor Circuit" .
If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at
FRESH when the DEF is selected.
CHECKING TEMPERATURE DECREASE
1. Press temperature control switch (DOWN, driver side) until 18°C is displayed.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for AT C - 8 4 , "
Insufficient Cooling" .
If OK, continue the check.Conditions : Engine running at normal operating temperature
SJIA1002E

TROUBLE DIAGNOSIS
ATC-55
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CHECKING TEMPERATURE INCREASE
1. Press temperature control switch (UP, driver side) until 32°C is displayed.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for AT C - 9 1 , "
Insufficient Heating" .
If OK, continue the check.
CHECKING A/C SWITCH
1. Press AUTO switch and A/C switch.
2. A/C switch indicator will turn ON.

Confirm that the compressor clutch engages (sound or visual inspection).
If NG, go to trouble diagnosis procedure for AT C - 7 8 , "
Magnet Clutch Circuit" .
If OK, continue the check.
CHECKING AUTO MODE
1. Press AUTO switch and A/C switch.
2. Display should indicate AUTO.

Confirm that the compressor clutch engages (sound or visual inspection). (Discharge air and blower
speed will depend on ambient, in-vehicle, and set temperatures.)
If NG, go to trouble diagnosis procedure for AT C - 5 6 , "
Power Supply and Ground Circuit for Auto Amp." , then
if necessary, trouble diagnosis procedure for AT C - 7 8 , "
Magnet Clutch Circuit" .
If all operational checks are OK (symptom cannot be duplicated), go to Incident Simulation Tests in GI-24,
"How to Perform Efficient Diagnosis for an Electrical Incident" and perform tests as outlined to simulate driv-
ing conditions environment. If symptom appears, refer to AT C - 3 5 , "
SYMPTOM TABLE" and perform applica-
ble trouble diagnosis procedures.

ATC-56
TROUBLE DIAGNOSIS

Power Supply and Ground Circuit for Auto Amp.BJS000FZ
SYMPTOM: A/C system does not come on.
INSPECTION FLOW
*1ATC-57, "DIAGNOSIS PROCE-
DURE FOR A/C SYSTEM"
*2ATC-54, "Operational Check"*3AV-58, "Unable to Operate System
with A/C and AV Switch" (Integrated
display system)
*4AV-97, "
Unable to Operate System
with A/C and AV Switch" (Integrated
color display system)
PJIA0004E