2014 NISSAN TEANA Service Manual

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Page 2729 of 4801

NISSAN TEANA 2014 Service Manual
HAC-80
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
POWER SUPPLY AND GROUND CIRCUIT
2. Check voltage between air mix door motor RH harness connector and ground.
Is the inspection result nor

Page 2730 of 4801

NISSAN TEANA 2014 Service Manual
POWER SUPPLY AND GROUND CIRCUITHAC-81
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHEC

Page 2731 of 4801

NISSAN TEANA 2014 Service Manual
HAC-82
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK INTAKE MODE DOOR MOTOR GROUND CIRC

HAC-82
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK INTAKE MODE DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake mode door motor connector.
3. Check continuity between intake mode door motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK INSTALLATION OF INTAKE MODE DOOR MOTOR
Check intake mode door motor is properly installed. Refer to HAC-108, "Exploded View"
.
Is the inspection result normal?
YES >> Replace intake mode door motor. Refer to HAC-109, "INTAKE DOOR MOTOR : Removal and
Installation".
NO >> Repair or replace malfunctioning part.
4.CHECK INTAKE MODE DOOR MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake mode door motor connector and A/C auto amp. connector.
3. Check continuity between intake mode door mo tor harness connector and A/C auto amp. harness con-
nector.
Is the inspection result normal?
YES >> Replace A/C auto amp. Refer to HAC-102, "Removal and Installation".
NO >> Repair harness or connector.
A/C SWITCH ASSEMBLY
A/C SWITCH ASSEMBLY : Co mponent Function CheckINFOID:0000000009463154
1.CHECK OPERATION
1. Press the AUTO switch, and then check t hat “AUTO” is shown on the display.
2. Operate the temperature control switch (driver side). Check that the fan speed or outlet changes. (The
discharge 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 switch assembly. Refer to HAC-83, "A/C SWITCH ASSEM-
BLY : Diagnosis Procedure".
+
−Voltage
(Approx.)
Intake mode door motor
Connector Terminal M126 1 Ground Battery voltage
Intake mode door motor —Continuity
Connector Terminal
M126 2 Ground Yes
Intake mode door motor A/C auto amp. Continuity
Connector Terminal Connector Terminal
M126 1 M152 17 Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 2732 of 4801

NISSAN TEANA 2014 Service Manual
POWER SUPPLY AND GROUND CIRCUITHAC-83
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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A/C SWITCH ASSEMBLY : Diagnosis ProcedureINFOID:0000000009463155
Regar

Page 2733 of 4801

NISSAN TEANA 2014 Service Manual
HAC-84
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
BLOWER MOTOR
BLOWER MOTOR
Diagnosis ProcedureINFOID:0000000009463156
Regarding Wiring Diagram information, refer to
HAC-34, "Wiring Diagra

Page 2734 of 4801

NISSAN TEANA 2014 Service Manual
BLOWER MOTORHAC-85
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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1. Reconnect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch

BLOWER MOTORHAC-85
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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1. Reconnect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch ON.
3. Operate MODE switch to set air outlet to VENT.
4. Change fan speed from Lo to Hi, and check duty ratios between blower motor harness connector and
ground by using an oscilloscope.
NOTE:
Calculate drive signal duty ratio as shown in the figure.
T2 = Approx. 1.6 ms
Is the inspection result normal?
YES >> Replace blower motor. Refer to VTL-13, "BLOWER MOTOR : Removal and Installation".
NO >> Replace A/C auto amp. Refer to HAC-102, "Removal and Installation"
.
6.CHECK BLOWER MOTOR RELAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between fuse bl ock (J/B) harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair harness or connector.
7.CHECK FRONT BLOWER MOTOR RELAY
Check front blower motor relay. Refer to HAC-85, "Component Inspection (Front Blower Motor Relay)"
.
Is the inspection result normal?
YES >> Repair harness or connector between blower motor and fuse block (J/B).
NO >> Replace front blower motor relay.
Component Inspection (Blower Motor)INFOID:0000000009463157
1.CHECK BLOWER MOTOR
1. Connect battery voltage to terminal 1 of blower motor.
2. Connect ground to terminal 2 of blower motor.
Does the blower fan operate?
YES >> Intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace blower motor. Refer to VTL-13, "BLOWER MOTOR : Removal and Installation"
.
Component Inspection (Front Blower Motor Relay)INFOID:0000000009463158
1.CHECK BLOWER RELAY
1. Turn ignition switch OFF.
2. Remove front blower motor relay.
Blower motor Condition Duty ratio
(Approx.)
Connector Terminal Fan speed (manual)
VENT mode
M31 17 1st 25 %
2nd 33 % 3rd 41 %4th 51 %
5th 61 %
6th 69 %
7th 81 %
JPLIA1210GB
Fuse block (J/B) —Continuity
Connector Terminal
M4 13R Ground Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 2735 of 4801

NISSAN TEANA 2014 Service Manual
HAC-86
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
BLOWER MOTOR
3. Check continuity between front blower motor relay terminals 3
and 5 when voltage is supplied between terminals 1 and 2.
Is

Page 2736 of 4801

NISSAN TEANA 2014 Service Manual
MAGNET CLUTCHHAC-87
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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MAGNET CLUTCH
Component Function CheckINFOID:0000000009463159
1.CHECK MAGNET CLUTCH OPERA

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