NISSAN TEANA 2008 Service Manual

B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
HAC-63
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B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
DescriptionINFOID:0000000003846356
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:0000000003846357
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
42, "DTC Logic" or HAC-43, "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-
42, "DTC Logic" or HAC-43, "DTC Logic".
Is DTC
“B263D”, “B263E”, “B263F” or “B2656” displayed?
YES >> Perform trouble diagnosis for the intake door motor. Refer to HAC-64, "Diagnosis Procedure".
NO >> GO TO 2.
2.FUNCTION INSPECTION
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?
YES >> INSPECTION END
: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

HAC-64
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
NO >> Check intake door motor installation, and repair or replace the malfunctioning parts.
Diagnosis ProcedureINFOID:0000000003846358
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?
YES >> Replace intake door motor.
NO >> Repair harness or connector.
(+) (−)
Vo l ta g e Intake door motor
—
Connector Terminal
M304 1 Ground Battery voltage
(+) (−)
Voltag e Intake door motor
—
Connector Terminal
M304 3 Ground
SJIA1453J
Intake door motor
—Continuity
Connector Terminal
M304 2 Ground Existed

POWER SUPPLY AND GROUND CIRCUIT
HAC-65
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POWER SUPPLY AND GROUND CIRCUIT
A/C AUTO AMP.
A/C AUTO AMP. : Diagnosis ProcedureINFOID:0000000003941309
1.CHECK FUSE
Check 10A fuses [Nos. 3, 6 and 19, located in the fuse block (J/B)].
NOTE:
Refer to PG-101, "
Fuse, Connector and Terminal Arrangement".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the fuse after repairing the applicable circuit.
2.CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT
1. Disconnect the A/C auto amp. connector.
2. Check voltage between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the harnesses or connectors.
3.CHECK A/C AUTO AMP. CIRCUIT CONTINUITY
1. Turn ignition switch OFF.
2. Check continuity between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the harnesses or connectors.
A/C CONTROL
A/C CONTROL : Diagnosis ProcedureINFOID:0000000003846370
1.CHECK A/C CONTROL POWER SUPPLY CIRCUIT
1. Disconnect the A/C control connector.
2. Turn ignition switch ON.
3. Check voltage between A/C control harness connector and ground.
(+) (−) Voltage
A/C auto amp.
—Ignition switch position
Connector Terminal OFF ACC ON
M5017
GroundApprox. 0 V Battery voltage Battery voltage
20 Approx. 0 V Approx. 0 V Battery voltage
40 Battery voltage Battery voltage Battery voltage
A/C auto amp.
—Continuity
Connector Terminal
M5019
Ground Existed
39
(+) (−)
Voltage A/C control
—
Connector Terminal
M95 1 Ground Battery voltage

HAC-66
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check 10A fuse (No. 3, located in the fuse block). Refer to PG-101, "
Fuse, Connector and Ter-
minal Arrangement".
 If fuse is OK, check harness for open circuit. Repair or replace if necessary.
 If fuse is NG, replace fuse and check for short circuit. Repair or replace if necessary.
2.CHECK A/C CONTROL CIRCUIT CONTINUITY
1. Turn ignition switch OFF.
2. Check continuity between A/C control harness connector and ground.
Is the inspection result normal?
YES >> Replace the A/C control.
NO >> Repair the harnesses or connectors.
A/C DISPLAY
A/C DISPLAY : Diagnosis ProcedureINFOID:0000000003846371
1.CHECK A/C DISPLAY POWER SUPPLY CIRCUIT
1. Disconnect the A/C display connector.
2. Turn ignition switch ON.
3. Check voltage between A/C display harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the harnesses or connectors.
2.CHECK A/C DISPLAY CIRCUIT CONTINUITY
1. Turn ignition switch OFF.
2. Check continuity between A/C display harness connector and ground.
Is the inspection result normal?
YES >> Replace the A/C display.
NO >> Check 10A fuse (No. 3, located in the fuse block). Refer to PG-101, "
Fuse, Connector and Ter-
minal Arrangement".
 If fuse is OK, check harness for open circuit. Repair or replace if necessary.
 If fuse is NG, replace fuse and check for short circuit. Repair or replace if necessary.
A/C control
—Continuity
Connector Terminal
M95 2 Ground Existed
(+) (−)
Voltage A/C display
—
Connector Terminal
M16 6 Ground Battery voltage
A/C display
—Continuity
Connector Terminal
M16 1 Ground Existed

A/C AUTO AMP.
HAC-67
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A/C AUTO AMP.
DescriptionINFOID:0000000003940951
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:0000000003940952
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-67, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003940953
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-84, "
Fail-Safe".
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-65, "
A/C AUTO AMP. : Diagnosis
Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace parts according to the inspection results.
3.CHECK A/C CONTROL SIGNAL CIRCUIT
Check the A/C control signal circuit. Refer to HAC-74, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace parts according to the inspection results.
JPIIA0894ZZ

HAC-68
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
BLOWER MOTOR
BLOWER MOTOR
DescriptionINFOID:0000000003846359
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:0000000003846360
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-68, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003846361
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-
42, "DTC Logic" or HAC-43, "DTC Logic".
Is any DTC displayed?
YES >> Perform the diagnosis that is applicable to the sensor and actuator. Refer to HAC-85, "DTC
Index".
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-38, "
CONSULT-III Function".
NOTE:
Perform the ACTIVE TEST after starting the engine because the compressor is operated.
ZHA152H
JSIIA0999ZZ

BLOWER MOTOR
HAC-69
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2. Check that the blower motor control signal changes according to each indicator signal.
NOTE:
 Perform the inspection of each output device after starting the engine because the compressor is oper-
ated.
 When choosing to “MODE 7”, error message is displayed but it is not malfunction.
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 3.
3.CHECK POWER SUPPLY FOR BLOWER MOTOR
1. Disconnect blower motor connector.
2. Turn ignition switch ON.
3. Check voltage between blower motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 7.
4.CHECK BLOWER MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between blower motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair harness or connector.
5.CHECK BLOWER MOTOR CIRCUIT CONTINUITY
1. Disconnect A/C auto amp. connector.
2. Check continuity between blower motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
Te s t i t e m
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7
Mode door position VENT B/L1 B/L2 AUTO FOOT D/F DEF -
Intake door position REC REC 20% FRE FRE FRE FRE -
Air mix door position
(driver & passenger
side)FULL COLD FULL COLD FULL HOT FULL HOT FULL HOT FULL HOT -
Blower motor duty ratio 37% 91% 65% 65% 65% 91% -
Compressor (Magnet
clutch)ON ON OFF OFF ON ON -
(+) (−)
Vo l ta g e Blower motor
—
Connector Terminal
M98 1 Ground Battery voltage
Blower motor
—Continuity
Connector Terminal
M98 3 Ground Existed
Blower motor A/C auto amp.
Continuity
Connector Terminal Connector Terminal
M98 2 M50 32 Existed

HAC-70
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
BLOWER MOTOR
YES >> GO TO 6.
NO >> Repair harness or connector.
6.CHECK A/C AUTO AMP. OUTPUT SIGNAL
1. Reconnect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch ON.
3. Set MODE switch to the VENT position.
4. Check the output waveform between blower motor harness connector and ground using an oscilloscope,
while varying the fan speed from 1 to 7.
Is the inspection result normal?
YES >> Replace the blower motor.
NO >> Replace the A/C auto amp.
7.CHECK POWER VOLTAGE OF BLOWER RELAY
1. Turn the ignition switch OFF.
2. Remove the blower relay. Refer to PG-101, "
Fuse, Connector and Terminal Arrangement".
3. Turn the ignition switch ON.
4. Check the voltage between blower relay fuse block side terminal and ground. Refer to PG-101, "
Fuse,
Connector and Terminal Arrangement" for relay terminal assignment.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Inspection the power supply circuit. Refer to PG-55, "
Wiring Diagram - IGNITION POWER SUP-
PLY -".
8.CHECK BLOWER RELAY
1. Turn the ignition switch OFF.
2. Install the blower relay. Refer to PG-101, "
Fuse, Connector and Terminal Arrangement".
3. Turn the ignition switch ON.
4. Check the operating sound of blower relay.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Replace the blower relay.
9.CHECK FUSE
Check 15A fuses (Nos. 21 and 22).
JPIIA1025GB
(+) (−)
Vol tag e
Blower relay —
1
Ground Battery voltage
3

BLOWER MOTOR
HAC-71
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NOTE:
Refer to PG-101, "
Fuse, Connector and Terminal Arrangement" for fuse location.
Is the inspection result normal?
YES >> Repair the harnesses or connectors.
NO >> Replace the fuse after repairing the applicable circuit.
Component InspectionINFOID:0000000003846362
1.CHECK BLOWER MOTOR
1. Remove the blower motor. Refer to VTL-32, "
Exploded View".
2. Check that the blower motor rotates smoothly.
Is the inspection result normal?
YES >> END.
NO >> Replace blower motor.

HAC-72
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
MAGNET CLUTCH
MAGNET CLUTCH
DescriptionINFOID:0000000003846363
The magnet clutch drives the compressor, by an IPDM E/R signal.
Component Function CheckINFOID:0000000003846364
1.FUNCTION INSPECTION
1. Press AUTO switch.
2. “AUTO” is indicated on the display.
3. Check that the indicator of the A/C switch turns on. Check visually and by sound that the compressor is
operating (the discharge air temperature or fan speed varies depending on the ambient temperature, in-
vehicle temperature, and temperature setting).
4. Press the A/C switch.
5. Check that the indicator of the A/C switch turns OFF. Check visually and by sound that the compressor
stops.
Does it operate normally?
YES >> INSPECTION END
NO >> Perform trouble diagnosis for the compressor. Refer to HAC-72, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003846365
1.INSPECTION IN AUTO ACTIVE TEST MODE
Perform “AUTO ACTIVE TEST”. Refer to PCS-11, "
Diagnosis Description".
Does it operate normally?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK MAGNET CLUTCH
1. Turn the ignition switch OFF.
2. Disconnect the magnet clutch connector.
3. Directly apply the battery voltage to the magnet clutch. Check for operation visually and by sound.
Does it operate normally?
YES >> GO TO 3.
NO >> Replace the compressor.
3.CHECK MAGNET CLUTCH CIRCUIT CONTINUITY
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between magnet clutch harness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair harness or connector.
4.CHECK FUSE
Check 10A fuse (No. 49).
NOTE:
Refer to PG-101, "
Fuse, Connector and Terminal Arrangement" for fuse location.
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Replace the fuse after repairing the applicable circuit.
IPDM E/R Compressor
Continuity
Connector Terminal Connector Terminal
F12 48 F18 1 Existed