fuse NISSAN TEANA 2014 Owners Manual

POWER SUPPLY AND GROUND CIRCUITHAC-83
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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A/C SWITCH ASSEMBLY : Diagnosis ProcedureINFOID:0000000009463155
Regarding Wiring Diagram information, refer to HAC-34, "Wiring Diagram".
1.CHECK A/C SWITCH ASSEMBLY POWER SUPPLY
1. Disconnect the A/C switch assembly connector.
2. Turn ignition switch ON.
3. Check voltage between A/C switch assembly harness connector M79 terminal 12 and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FUSE
Check 10A fuse [No.30, located in the fuse block (J/B)].
NOTE:
Refer to PG-70, "Terminal Arrangement"
.
Is the inspection result normal?
YES >> Check harness for open circuit. Re pair or replace if necessary.
NO >> Check harness for short circuit. Repair or replace if necessary.
3.CHECK A/C SWITCH ASSEMBLY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between A/C switch assemb ly harness connector M79 terminal 1 and ground.
Is the inspection result normal?
YES >> Replace the A/C switch assembly. Refer to HAC-101, "Removal and Installation".
NO >> Repair the harnesses or connectors.
(+) ( −)Voltage
A/C switch assembly —Ignition switch position
Connector Terminal OFF ACC ON
M79 12 Ground Approx. 0V Approx. 0V Battery
voltage
A/C switch assembly —Continuity
Connector Terminal
M79 1 Ground Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-84
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
BLOWER MOTOR
BLOWER MOTOR
Diagnosis ProcedureINFOID:0000000009463156
Regarding Wiring Diagram information, refer to
HAC-34, "Wiring Diagram".
1.CHECK FUSE
1. Turn ignition switch OFF.
2. Check 15A fuses [Nos. 17 and 27, located in fuse block (J/B)].
NOTE:
Refer to PG-70, "Terminal Arrangement"
.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the blown fuse after repairing the affected circuit.
2.CHECK BLOWER MOTOR POWER SUPPLY
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 3.
NO >> GO TO 6.
3.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 4.
NO >> Repair harness or connector.
4.CHECK BLOWER MOTOR CONTROL SIGNAL CIRCUIT
1. Disconnect A/C auto amp. connector.
2. Check continuity between blower motor harne ss connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair the harness or connector.
5.CHECK BLOWER MOTOR CONTROL SIGNAL
+
−Voltage
(Approx.)
Blower motor
Connector Terminal M31 38 Ground Battery voltage
Blower motor —Continuity
Connector Terminal
M31 39 Ground Yes
Blower motor A/C auto amp. Continuity
Connector Terminal Connector Terminal
M31 17 M152 18 Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

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

MAGNET CLUTCHHAC-87
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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MAGNET CLUTCH
Component Function CheckINFOID:0000000009463159
1.CHECK MAGNET CLUTCH OPERATION
Perform auto active test of IPDM E/R. Refer to PCS-8, "Diagnosis Description"
.
Does it operate normally?
YES >> Inspection End.
NO >> Refer to HAC-87, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009463160
Regarding Wiring Diagram information, refer to HAC-34, "Wiring Diagram".
1.CHECK FUSE
1. Turn ignition switch OFF.
2. Check 10A fuse (No. 53, located in IPDM E/R).
NOTE:
Refer to PG-72, "Fuse, Connector and Terminal Arrangement"
.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the blown fuse after repairing the affected circuit.
2.CHECK MAGNET CLUTCH POWER SUPPLY CIRCUIT
1. Disconnect compressor connec tor and IPDM E/R connector.
2. Check continuity between compressor har ness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK MAGNET CLUTCH GROUND CIRCUIT
1. Disconnect compressor connector.
2. Check continuity between comp ressor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair harness or connector.
4.CHECK MAGNET CLUTCH
Directly apply battery voltage to the magnet cl utch. Check operation visually and by sound.
Does it operate normally?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Replace magnet clutch. Refer to HA-31, "MAGNET CLUTCH : Removal and Installation"
.
Compressor IPDM E/R
Continuity
Connector Terminal Connector Terminal
F3 1 F83 56 Yes
Compressor —Continuity
Connector Terminal
F3 2 Ground Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-92
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
ECV (ELECTRICAL CONTROL VALVE)
ECV (ELECTRICAL CONTROL VALVE)
Diagnosis ProcedureINFOID:0000000009463164
1.CHECK ECV (ELECTRICAL CONT
ROL VALVE) POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect compressor connector.
3. Turn ignition switch ON.
4. Check voltage between compressor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK FUSE
1. Turn ignition switch OFF.
2. Check 10 A fuse [No. 30, located in fuse block (J/B)]. Refer to PG-70, "Terminal Arrangement"
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace the blown fuse after repairing the affected circuit.
3.CHECK ECV POWER SUPPLY CIRCUIT FOR OPEN
1. Disconnect fuse block (J/B) connector.
2. Check continuity between compressor harness connector and fuse block (J/B) harness connector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair harness or connector.
4.CHECK ECV POWER SUPPLY CIRCUIT FOR SHORT
1. Disconnect A/C auto amp. connector and A/C switch assembly connector.
2. Check continuity between compressor harness connector and ground.
Is the inspection result normal?
YES >> Check ignition power supply circuit. Refer to PG-19, "Wiring Diagram — Ignition Power Supply —
".
NO >> Repair harness or connector.
5.CHECK ECV CONTROL SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between compressor harne ss connector and A/C auto amp. harness connector.
+
−Voltag e
Compressor
Connector Terminal F88 4 Ground Battery voltage
Compressor Fuse block (J/B) Continuity
Connector Terminal Connector Terminal
F88 4 E6 1M Yes
Compressor —Continuity
Connector Terminal
F88 4 Ground No
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

COMPONENT PARTSHAC-115
< SYSTEM DESCRIPTION > [MANUAL AIR CONDITIONER]
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Component DescriptionINFOID:0000000009463193
7. Refrigerant pressure sensor (view with front bumper fascia removed) 8. Blower motor (view with front air con-
ditioning assembly removed from ve-
hicle) 9. Intake door motor
10. Mode door motor 11. Air mix door motor
Component Description
A/C Compressor Vaporized refrigerant is drawn into the A/C compressor from the evaporator, where it is compressed
to a high pressure, high temperature vapor. The hot, compressed vapor is then discharged to the con-
denser.
Air mix door motor The air mix door controls the mix of hot or cold air that enters the ventilation system. It is controlled
by the front air control based on the position of the temperature dial. The air mix door motor receives
position commands from the front air control and reports actual door position back via an LCU (Local
Control Unit) installed inside the motor. Commands and responses are sent across the LIN (Local In-
terconnect Network) to each motor simultaneously, with each motor having its own unique address,
thereby only responding to requests sent to its specific address. The LCU reads the door position from
a Position Balanced Resistor (PBR), also part of the motor, and returns that information to the front
air control. The LCU switches the polarity of the circuits connected to the DC motor to drive the motor
forward or backward as requested by the front air control.
BCM The BCM receives the fan ON and A/C ON signals from the front air control and sends a compressor
ON request to the ECM.
Blower motor The blower motor varies the speed at which the air flows through the ventilation system.
ECM The ECM sends a compressor ON request to the IPDM E/R based on the status of engine operation
and load as well as refrigerant pressure information. If all the conditions are met for A/C operation,
the ECM transmits the compressor ON request to the IPDM E/R. The ECM shares the refrigerant
pressure sensor signal, engine RPM, and engine coolant temperature with the front air control via
CAN communication line.
Front air control The front air control controls the operation of the A/C and heating system based on inputs from the
temperature control knob, the mode switches, the blower control dial, and inputs received from the
ECM and combination meter across the CAN.
Front blower motor relay The front blower motor relay controls the flow of current to fuses 17 and 27 in the Fuse Block (J/B).
The relay is connected directly to ground, and is energized when the ignition switch is in the ON or
START position.
Fuse Block (J/B) Located in the passenger compartment, behind the left lower IP, the Fuse Block (J/B) contains the
front blower motor relay and several fuses required for the air conditioner control system.
Intake door motor The intake door motor controls the position of the intake door. Fresh air is allowed to enter the cabin
in one position, and recirculated inside air is allowed to enter in the other position. At times the front
air control may command partial fresh or recirculation based on evaporator or coolant temperatures.
The intake door motor receives position commands from the front air control and reports actual door
position back via an LCU (Local Control Unit) installed inside the motor. Commands and responses
are sent across the LIN (Local Interconnect Network) to each motor simultaneously, with each motor
having its own unique address, thereby only responding to requests sent to its specific address. The
LCU reads the door position from a Position Balanced Resistor (PBR), also part of the motor, and re-
turns that information to the front air control. The LCU switches the polarity of the circuits connected
to the DC motor to drive the motor forward or backward as requested by the front air control.
IPDM E/R Refer to PCS-6, "RELAY CONTROL SYSTEM : System Description"
.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-148
< DTC/CIRCUIT DIAGNOSIS >[MANUAL AIR CONDITIONER]
BLOWER MOTOR
BLOWER MOTOR
Diagnosis ProcedureINFOID:0000000009463214
Regarding Wiring Diagram information, refer to
HAC-130, "Wiring Diagram".
1.CHECK FUSE
1. Turn ignition switch OFF.
2. Check 15A fuses [Nos. 17 and 27, located in fuse block (J/B)].
NOTE:
Refer to PG-70, "Terminal Arrangement"
.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the blown fuse after repairing the affected circuit.
2.CHECK BLOWER MOTOR POWER SUPPLY
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 3.
NO >> GO TO 6.
3.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 4.
NO >> Repair harness or connector.
4.CHECK BLOWER MOTOR CONTROL SIGNAL CIRCUIT
1. Disconnect front air control connector.
2. Check continuity between blower motor harness connector and front air control harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair the harness or connector.
5.CHECK BLOWER MOTOR CONTROL SIGNAL
+
−Voltage
(Approx.)
Blower motor
Connector Terminal M31 38 Ground Battery voltage
Blower motor —Continuity
Connector Terminal
M31 39 Ground Yes
Blower motor Front air control Continuity
Connector Terminal Connector Terminal
M31 17 M37 11 Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

BLOWER MOTORHAC-149
< DTC/CIRCUIT DIAGNOSIS > [MANUAL AIR CONDITIONER]
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1. Reconnect blower motor connector and front air control 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 front air control. 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-149, "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:0000000009463215
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:0000000009463216
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

MAGNET CLUTCHHAC-151
< DTC/CIRCUIT DIAGNOSIS > [MANUAL AIR CONDITIONER]
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MAGNET CLUTCH
Component Function CheckINFOID:0000000009463217
1.CHECK MAGNET CLUTCH OPERATION
Perform auto active test of IPDM E/R. Refer to PCS-8, "Diagnosis Description"
.
Does it operate normally?
YES >> Inspection End.
NO >> Refer to HAC-151, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009463218
Regarding Wiring Diagram information, refer to HAC-130, "Wiring Diagram".
1.CHECK FUSE
1. Turn ignition switch OFF.
2. Check 10A fuse (No. 53, located in IPDM E/R).
NOTE:
Refer to PG-72, "Fuse, Connector and Terminal Arrangement"
.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the blown fuse after repairing the affected circuit.
2.CHECK MAGNET CLUTCH POWER SUPPLY CIRCUIT
1. Disconnect compressor connec tor and IPDM E/R connector.
2. Check continuity between compressor har ness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK MAGNET CLUTCH GROUND CIRCUIT
1. Disconnect compressor connector.
2. Check continuity between comp ressor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair harness or connector.
4.CHECK MAGNET CLUTCH
Directly apply battery voltage to the magnet cl utch. Check operation visually and by sound.
Does it operate normally?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Replace magnet clutch. Refer to HA-31, "MAGNET CLUTCH : Removal and Installation"
.
Compressor IPDM E/R
Continuity
Connector Terminal Connector Terminal
F3 1 F83 56 Yes
Compressor —Continuity
Connector Terminal
F3 2 Ground Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-152
< DTC/CIRCUIT DIAGNOSIS >[MANUAL AIR CONDITIONER]
POWER SUPPLY AND GROUND CIRCUIT FOR FRONT AIR CONTROL
POWER SUPPLY AND GROUND CIRC
UIT FOR FRONT AIR CONTROL
DescriptionINFOID:0000000009463219
COMPONENT DESCRIPTION
Front air control.
The front air control has a built-in microcomputer that processes inform ation sent from various sensors
needed for air conditioner operation. The air mix door motor, the mode door motor, the intake door motor, the
blower motor and the A/C compressor are then controlled.
Component Function CheckINFOID:0000000009463220
1.CHECK OPERATION
1. Turn the blower motor dial clockwise and verify t he blower speed increases and that one of the LEDs illu-
minates on the mode switch.
2. Press the mode switches and verify that the modes change, the LEDs illuminate, and that air flows from
the various vents.
3. Turn the temperature control dial and verify the temperature changes at the selected vents.
4. Press the DEF and REC buttons and verify air flow changes.
Does it operate normally?
YES >> Inspection End.
NO >> Perform trouble diagnosis for the front air control system. Refer to HAC-152, "Diagnosis Proce-
dure".
Diagnosis ProcedureINFOID:0000000009463221
Regarding Wiring Diagram information, refer to HAC-130, "Wiring Diagram".
1.CHECK FRONT AIR CONTROL POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect the front air control connector.
3. Turn ignition switch ON.
4. Check voltage between front air control har ness connector M37 terminals 1, 2 and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FUSE
Check fuses [Nos. 14 and 30, located in the fuse block (J/B)].
NOTE:
Refer to PG-70, "Terminal Arrangement"
.
Is the inspection result normal?
YES >> Check harness for open circuit. Repair or replace if necessary.
NO >> Check harness for short circuit. Repair or replace if necessary.
3.CHECK FRONT AIR CONTROL GROUND CIRCUIT
(+) (−)Voltage
Front air control —Ignition switch position
Connector Terminal OFF ACC ON
M37 1
Ground Battery
voltage Battery
voltage Battery
voltage
2 Approx. 0V Approx. 0V Battery
voltage
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM