Condition NISSAN TEANA 2008 Service Manual

B2578, B2579 IN-VEHICLE SENSOR
HAC-171
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
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4.CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between in-vehicle sensor harness connector and A/C auto amp. harness connector.
4. Check continuity between in-vehicle sensor harness connector and ground.
Is the inspection result normal?
YES >> Replace A/C auto amp.
NO >> Repair harness or connector.
Component InspectionINFOID:0000000003884747
1.CHECK IN-VEHICLE SENSOR
1. Turn ignition switch OFF.
2. Disconnect in-vehicle sensor connector. Refer to VTL-83, "
Exploded View".
3. Check resistance between in-vehicle sensor terminals.
Is the inspection result normal?
YES >> END.
NO >> Replace in-vehicle sensor.
In-vehicle sensor A/C auto amp.
Continuity
Connector Terminal Connector Terminal
M41 1 M50 36 Existed
In-vehicle sensor
—Continuity
Connector Terminal
M41 1 Ground Not existed
Te r m i n a lCondition
Resistance kΩ
Temperature °C (°F)
12−15 (5) 12.73
−10 (14) 9.92
−5 (23) 7.80
0 (32) 6.19
5 (41) 4.95
10 (50) 3.99
15 (59) 3.24
20 (68) 2.65
25 (77) 2.19
30 (86) 1.81
35 (95) 1.51
40 (104) 1.27
45 (113) 1.07

HAC-174
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B2581, B2582 INTAKE SENSOR
Is the inspection result normal?
YES >> END.
NO >> Replace intake sensor.
Te r m i n a lCondition
Resistance kΩ
Temperature °C (°F)
12−15 (5) 17.73
−10 (14) 13.46
−5 (23) 10.33
0 (32) 8.00
5 (41) 6.26
10 (50) 4.93
15 (59) 3.92
20 (68) 3.14
25 (77) 2.54
30 (86) 2.06
35 (95) 1.69
40 (104) 1.39
45 (113) 1.15

B262A, B262B, B2657, B2658 GAS SENSOR
HAC-175
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
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B262A, B262B, B2657, B2658 GAS SENSOR
WITH INTELLIGENT AIR CONDITIONER SYSTEM
WITH INTELLIGENT AIR CONDITIONER SYSTEM : DescriptionINFOID:0000000003884752
COMPONENT DESCRIPTION
Gas Sensor
The gas sensor (1) is attached on the bumper upper retainer. It
detects smell of exhaust gas and converts it into a duty ratio which is
then input into the A/C auto amp.
Gas Sensor Circuit
SMELL OF EXHAUST GAS INPUT PROCESS
Gas sensor detects ambient atmospheric CO and NO2, and converts them to values of resistance. The values
are converted to signals with the gas sensor internal circuit, then auto amp. inputs the signals.
Gas sensor has a construction that detects CO and NO
2 by gas sensor element from the air intake of the case
through a filter (waterproof sheet). It sends output signals to auto amp. in response to a resistance value con-
version by gas sensor elements. Output signals prevent a smell of exhaust gas from getting into vehicle by
performing corrections according to various driving conditions.
WITH INTELLIGENT AIR CONDITIONER SYSTEM : DTC LogicINFOID:0000000003884753
DTC DETECTION LOGIC
JPIIA0900ZZ
JPIIA1009GB
PJIA0049E

HAC-176
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B262A, B262B, B2657, B2658 GAS SENSOR
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC is displayed in the self-diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
Is DTC
“B262A”, “B262B”, “B2657” or “B2658” displayed?
YES >> Perform trouble diagnosis for the gas sensor. Refer to HAC-176, "WITH INTELLIGENT AIR CON-
DITIONER SYSTEM : Diagnosis Procedure".
NO >> INSPECTION END
WITH INTELLIGENT AIR CONDITIONER SYSTEM : Diagnosis ProcedureINFOID:0000000003884754
1.ADJUST GAS SENSOR SENSITIVITY AND CLEAN SWITCH INTERLOCKING CHANGE
1. Turn ignition switch ON.
2. Adjust the gas sensor sensitivity and clean switch interlocking change. Refer to HAC-116, "
WITH INTEL-
LIGENT AIR CONDITIONER SYSTEM : Gas Sensor Sensitivity Adjustment Function (With Intelligent Air
Conditioner System)" and HAC-116, "WITH INTELLIGENT AIR CONDITIONER SYSTEM : Clean Switch
Interlocking Movement Change Function (With Intelligent Air Conditioner System)".
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK POWER SUPPLY FOR GAS SENSOR
1. Turn ignition switch OFF.
2. Disconnect gas sensor connector.
3. Turn ignition switch ON.
4. Check voltage between gas sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Check power supply circuit and 10A fuse (No. 3, located in the fuse block). Refer to PG-101,
"Fuse, Connector and Terminal Arrangement".
 If fuse is OK, check harness for open circuit. Repair or replace if necessary.
 If fuse is NG, check harness for short circuit and replace fuse.
3.CHECK GROUND CIRCUIT FOR GAS SENSOR
1. Turn ignition switch OFF.
2. Check continuity between gas sensor harness connector and ground.
DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause
B262A GAS SENSOR (SHORT) Gas sensor duty 10% or less
 Gas sensor
 A/C auto amp.
 Harness and connector
(Gas sensor circuit is open, or
there is a short in the circuit) B262B GAS SENSOR (OPEN) Gas sensor duty 90% or more
B2657 GAS SENSOR CIRCUIT (SHORT) Gas sensor duty 0%
B2658 GAS SEN CIRCUIT (OPEN) Gas sensor duty 100%
(+) (−)
Vol tag e Gas sensor
—
Connector Terminal
E351 1 Ground Battery voltage

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
HAC-185
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
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B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
DescriptionINFOID:0000000003884766
COMPONENT DESCRIPTION
Mode Door Motor
 The mode door motor (1) are attached to the heater & cooling unit
assembly.
 It rotates so that air is discharged from the outlet set by the A/C
auto amp. Motor rotation is conveyed to a link which activates the
mode door.
DTC LogicINFOID:0000000003884767
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC is displayed in the self-diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
Is DTC
“ B2636 ”, “ B2637 ”, “B2638 ”, “B2639 ”, “B2654 ” or “B2655 ” displayed?
YES >> Perform trouble diagnosis for the mode door motor. Refer to HAC-186, "Diagnosis Procedure".
NO >> GO TO 2.
2.FUNCTION INSPECTION
1. Press MODE switch and DEF switch.
2. Each position indicator should change shape.
3. Confirm that air discharge comes out according to the air distribution table at below. Refer to HAC-122,
"WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : System Description" (WITHOUT INTELLI-
:Vehicle front
JPIIA0893ZZ
DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause
B2636 DR VENT DOOR FAILWhen the malfunctioning door position is
detected at VENT position
 Mode door motor
 A/C auto amp.
 Harness and connector
(CAN communication line is open
or shorted)
(Mode door motor is open or short-
ed) B2637 DR B/L DOOR FAILWhen the malfunctioning door position is
detected at B/L position
B2638 DR D/F1 DOOR FAILWhen the malfunctioning door position is
detected at FOOT position
B2639 DR DEF DOOR FAILWhen the malfunctioning door position is
detected at DEF position
B2654 D/F2 DOOR FAILWhen the malfunctioning door position is
detected at D/F position
B2655 B/L2 DOOR FAILWhen the malfunctioning door position is
detected at B/L2 position

HAC-186
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
GENT AIR CONDITIONER SYSTEM) or HAC-133, "WITH INTELLIGENT AIR CONDITIONER SYSTEM :
System Description" (WITH INTELLIGENT AIR CONDITIONER SYSTEM).
NOTE:
Confirm that the compressor clutch is engaged (Sound or visual inspection) and intake door position is at FRE
when DEF is selected.
Does it operate normally?
YES >> END.
NO >> Check mode door motor installation, and repair or replace the malfunctioning parts.
Diagnosis ProcedureINFOID:0000000003884768
1.CHECK POWER SUPPLY FOR MODE DOOR MOTOR
Check voltage between mode door motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SIGNAL FOR MODE DOOR MOTOR
Confirm A/C LAN signal between mode door motor harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
JPIIA0877GB
(+) (−)
Vo l ta g e Mode door motor
—
Connector Terminal
M310 1 Ground Battery voltage
(+) (−)
Voltag e Mode door motor
—
Connector Terminal
M310 3 Ground
SJIA1453J

HAC-188
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
DescriptionINFOID:0000000003884769
COMPONENT DESCRIPTION
Intake Door Motor
 The intake door motor (1) is attached to the blower unit.
 It rotates so that air is drawn from inlets set by the A/C auto amp.
Motor rotation is conveyed to a lever which activates the intake
door.
DTC LogicINFOID:0000000003884770
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC is displayed in the self-diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
Is DTC
“B263D”, “B263E”, “B263F” or “B2656” displayed?
YES >> Perform trouble diagnosis for the intake door motor. Refer to HAC-189, "Diagnosis Procedure".
NO >>  WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : GO TO 2.
 WITH INTELLIGENT AIR CONDITIONER SYSTEM : GO TO 3.
2.FUNCTION INSPECTION (WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM)
1. Press REC switch.
2. The REC switch indicator is turned ON. (REC position)
3. Listen for intake door position change (Slight change of blower sound can be heard.).
4. Press FRE switch.
5. The FRE switch indicator is turned ON. (FRE position)
6. Listen for intake door position change (Slight change of blower sound can be heard.).
Does it operate normally?
:Vehicle front
JPIIA0516ZZ
DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause
B263D FRE DOOR FAILWhen the malfunctioning intake door posi-
tion is detected at FRE position
 Intake door motor
 A/C auto amp.
 Harness and connector
(CAN communication line is open
or shorted)
(Intake door motor is open or
shorted) B263E 20P FRE DOOR FAILWhen the malfunctioning intake door posi-
tion is detected at 20%FRE position
B263F REC DOOR FAILWhen the malfunctioning intake door posi-
tion is detected at REC position
B2656 BTC FRE DOOR FAILWhen the malfunctioning intake door posi-
tion is detected

B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
HAC-189
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YES >> INSPECTION END
NO >> Check intake door motor installation, and repair or replace the malfunctioning parts.
3.FUNCTION INSPECTION (WITH INTELLIGENT AIR CONDITIONER SYSTEM)
1. Press intake switch.
2. The intake switch indicator is turned ON. (REC position)
3. Listen for intake door position change (Slight change of blower sound can be heard.).
4. Press intake switch again.
5. The intake switch indicator is turned ON. (FRE position)
6. Listen for intake door position change (Slight change of blower sound can be heard.).
Does it operate normally?
YES >> INSPECTION END
NO >> Check intake door motor installation, and repair or replace the malfunctioning parts.
Diagnosis ProcedureINFOID:0000000003884771
1.CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR
Check voltage between intake door motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SIGNAL FOR INTAKE DOOR MOTOR
Confirm A/C LAN signal between intake door motor harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK INTAKE DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake door motor connector.
3. Check continuity between intake door motor harness connector and ground.
Is the inspection result normal?
(+) (−)
Voltag e Intake door motor
—
Connector Terminal
M304 1 Ground Battery voltage
(+) (−)
Vo l ta g e Intake door motor
—
Connector Terminal
M304 3 Ground
SJIA1453J
Intake door motor
—Continuity
Connector Terminal
M304 2 Ground Existed

HAC-192
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
A/C AUTO AMP.
A/C AUTO AMP.
DescriptionINFOID:0000000003941321
COMPONENT DESCRIPTION
A/C Auto Amp. (Air Conditioner Automatic Amplifier)
The A/C auto amp. (1) has a built-in microcomputer that processes
information sent from various sensors needed for air conditioner
operation. The air mix door motors, the mode door motor, the intake
door motor, the blower motor and the compressor are then con-
trolled.
When the various switches and temperature control dial are oper-
ated, data is input to the A/C auto amp. from the A/C control.
Component Function CheckINFOID:0000000003940728
1.CHECK OPERATION
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.)
Does it operate normally?
YES >> INSPECTION END
NO >> Perform trouble diagnosis for the A/C system. Refer to HAC-192, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003940729
1.INSPECTION BY FAIL-SAFE FUNCTION
1. Turn the ignition switch ON.
2. After approximately 30 seconds, check that the air conditioner is operated by the fail-safe function (the
operation display of air conditioner is not performed). Refer to HAC-211, "
WITHOUT INTELLIGENT AIR
CONDITIONER SYSTEM : Fail-Safe" (WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM) or HAC-
223, "WITH INTELLIGENT AIR CONDITIONER SYSTEM : Fail-Safe" (WITH INTELLIGENT AIR CONDI-
TIONER SYSTEM).
Is the fail-safe function operated?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT AND GROUND
Check A/C auto amp. power supply circuit and ground circuit. Refer to HAC-192, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace parts according to the inspection results.
3.CHECK PRESET SWITCH
Check the preset switch. Refer to AV-164, "
Symptom Table" (BASE AUDIO AND DISPLAY SYSTEM), AV-372,
"Symptom Table" (BOSE AUDIO WITHOUT NAVIGATION) or AV-640, "Symptom Table" (BOSE AUDIO WITH
NAVIGATION).
Is the inspection result normal?
YES >> Replace the A/C auto amp.
NO >> Repair or replace parts according to the inspection results.
JPIIA0894ZZ

BLOWER MOTOR
HAC-193
< COMPONENT DIAGNOSIS >[WITH 7 INCH DISPLAY]
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BLOWER MOTOR
DescriptionINFOID:0000000003884772
COMPONENT DESCRIPTION
Brush-less Motor
The blower motor utilizes a brush-less motor with a rotating magnet.
Quietness is improved over previous motors where the brush was
the point of contact and the coil rotated.
Blower Motor Circuit
Component Function CheckINFOID:0000000003884773
1.CHECK OPERATION
1. Warm up the engine.
2. Operate the fan control dial. Check that the fan speed and indicator are switched for all fan speeds.
Does it operate normally?
YES >> INSPECTION END
NO >> Perform trouble diagnosis for the blower motor. Refer to HAC-193, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003884774
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC is displayed in the self-diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
164, "DTC Logic" or HAC-165, "DTC Logic".
Is any DTC displayed?
YES >> Perform the diagnosis that is applicable to the sensor and actuator. Refer to HAC-212, "WITH-
OUT INTELLIGENT AIR CONDITIONER SYSTEM : DTC Index"WITHOUT INTELLIGENT AIR
CONDITIONER SYSTEM) or HAC-224, "
WITH INTELLIGENT AIR CONDITIONER SYSTEM :
DTC Index" (WITH INTELLIGENT AIR CONDITIONER SYSTEM).
NO >> GO TO 2.
2.CHECK WITH ACTIVE TEST OF CONSULT-III
1. Using CONSULT-III, perform “HVAC TEST” “ACTIVE TEST” of HVAC to check each output device. Refer
to HAC-156, "
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : CONSULT-III Function" (WITH-
ZHA152H
JSIIA0999ZZ