Nissan Pathfinder (2011 year). Manual — part 446
AIR MIX DOOR MOTOR
HAC-31
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Air Mix Door Control Specification
COMPONENT DESCRIPTION
Air Mix Door Motors (front)
The driver (2) and passenger (1) air mix door motors are attached to
the front heater & cooling unit assembly. These motors rotate so that
the air mix door is opened or closed to a position set by the A/C auto
amp. Motor rotation is then conveyed through a shaft and the air mix
door position is then fed back to the A/C auto amp. by the PBR built
into the air mix door motors.
Air Mix Door Motor (rear)
The air mix door motor (rear) (1) is attached to the rear heater &
cooling unit assembly. These motors rotate so that the air mix door is
opened or closed to a position set by the front (or rear) air control.
Motor rotation is then conveyed through a shaft and the air mix door
position is then fed back to the A/C auto amp. by the PBR built into
the air mix door motors.
Air Mix Door Motor (Driver) Component Function Check
INFOID:0000000006243636
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE INCREASE
1. Turn the temperature control dial (driver) clockwise until 32
°
C (90
°
F) is displayed.
2. Check for hot air at discharge air outlets.
AWIIA0107GB
WJIA1978E
WJIA1979E
WJIA1979E
WJIA1245E
2011 Pathfinder
HAC-32
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
AIR MIX DOOR MOTOR
>> GO TO 2.
2.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1. Turn the temperature control dial (driver) counterclockwise until 18
°
C (60
°
F) is displayed.
2. Check for cold air at discharge air outlets.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
HAC-39, "Intake Door Motor Diagnosis Procedure"
Air Mix Door Motor (Driver) Diagnosis Procedure
INFOID:0000000006243637
Regarding Wiring Diagram information, refer to
HAC-95, "Wiring Diagram - Automatic"
SYMPTOM:
• Discharge air temperature does not change.
• Air mix door motor does not operate.
1.
CHECK AIR MIX DOOR MOTOR (DRIVER) POSITION BALANCED RESISTOR (PBR) FEEDBACK VOLT-
AGE
1. Turn ignition switch ON.
2. Using CONSULT-III, check "DVR MIX FDBCK" in "DATA MONITOR" mode in "HVAC". Refer to
.
3. Observe "DVR MIX FDBACK" voltage while rotating temperature control dial (driver) between 32
°
C (90
°
F)
and 18
°
C (60
°
F).
Is the inspection result normal?
YES
>> • Air mix door motor (driver) is OK.
• Inspect air mix door (driver) for mechanical failure and repair if necessary. If air mix door (driver)
is OK, refer to
HAC-112, "Component Function Check"
for insufficient cooling or
for insufficient heating.
NO
>> GO TO 2.
2.
CHECK AIR MIX DOOR MOTOR (DRIVER) CIRCUITS FOR OPEN AND SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect the A/C auto amp. harness connector M49 and the air mix door motor (driver) harness con-
nector M147.
3. Check continuity between A/C auto amp. harness connector M49 terminals 17, 18 and the air mix door
motor (driver) harness connector M147 terminals 5, 6.
4. Check continuity between A/C auto amp. harness connector M49 terminals 17, 18 and ground.
Is the inspection result normal?
Monitor Item
Condition
Results
DVR MIX FDBCK
Rotate temperature control dial (driver) be-
tween 32
°
C (90
°
F) and 18
°
C (60
°
F)
Voltage varies with dial rotation between 0.2 and 4.8V.
Connector
Terminal
Connector
Terminal
Continuity
M49
17
M147
6
Yes
18
5
Connector
Terminal
—
Continuity
M49
17
Ground
No
18
2011 Pathfinder
AIR MIX DOOR MOTOR
HAC-33
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
YES
>> GO TO 3.
NO
>> Repair or replace harness as necessary.
3.
CHECK A/C AUTO AMP. FOR AIR MIX DOOR MOTOR (DRIVER) POWER AND GROUND
1. Reconnect A/C auto amp. harness connector.
2. Turn ignition switch ON.
3. Rotate temperature control dial (driver) to 32
°
C (90
°
F).
4. Check voltage between A/C auto amp. harness connector M49 terminal 17 and terminal 18 while rotating
temperature control dial (driver) to 18
°
C (60
°
F) and back to 32
°
C (90
°
F).
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace A/C auto amp. Refer to
VTL-7, "Removal and Installation"
.
4.
CHECK AIR MIX DOOR MOTOR (DRIVER) PBR CIRCUITS FOR OPEN AND SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect the A/C auto amp. harness connectors.
3. Check continuity between A/C auto amp. harness connector M49 terminal 3, connector M50 terminal 28
and air mix door motor (driver) harness connector M147 terminals 1, 3.
4. Check continuity between A/C auto amp. harness connector M49 terminal 3, M50 terminal 28 and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness as necessary.
5.
CHECK PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN AND SHORT TO GROUND
1. Check continuity between A/C auto amp. harness connector M49 terminal 6 and air mix door motor
(driver) harness connector M147 terminal 2.
2. Check continuity between A/C auto amp. harness connector M49 terminal 6 and ground.
Is the inspection result normal?
YES
>> GO TO 6.
Connector
Terminals
Condition Voltage
(Approx.)
(+) (-)
M49
17
18
While rotating temperature control
dial (driver) from 32
°
C (90
°
F) to 18
°
C
(60
°
F)
Battery voltage
18
17
While rotating temperature control
dial (driver) from 18
°
C (60
°
F) to 32
°
C
(90
°
F)
Battery voltage
Connector
Terminal
Connector
Terminal
Continuity
M49
3
M147
3
Yes
M50
28
1
Connector
Terminal
—
Continuity
M49
3
Ground
No
M50
28
Connector
Terminal
Connector
Terminal
Continuity
M49
6
M147
2
Yes
Connector
Terminal
—
Continuity
M49
6
Ground
No
2011 Pathfinder
HAC-34
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
AIR MIX DOOR MOTOR
NO
>> Repair or replace harness as necessary.
6.
CHECK A/C AUTO AMP. FOR 5 VOLT REFERENCE (VREF), VREF RETURN, AND FEEDBACK SIGNAL
1. Reconnect A/C auto amp. harness connectors.
2. Turn ignition switch ON.
3. Check voltage between A/C auto amp. harness connector M49 terminal 3, and M50 terminal 28.
4. Check voltage between A/C auto amp. harness connector M49 terminal 6 and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace A/C auto amp. Refer to
VTL-7, "Removal and Installation"
7.
CHECK A/C AUTO AMP. FOR FEEDBACK SIGNAL
1. Reconnect the air mix door motor (driver) harness connector M147.
2. Check voltage between A/C auto amp. harness connector M49 terminal 6 and ground.
Is the inspection result normal?
YES
>> Inspect air mix door (driver) for binding or mechanical failure. If air mix door (driver) moves freely,
replace A/C auto amp. Refer to
VTL-7, "Removal and Installation"
.
NO
>> Replace air mix door motor (driver). Refer to
VTL-29, "Removal and Installation"
Air Mix Door Motor (Passenger) Component Function Check
INFOID:0000000006243638
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE INCREASE
1. Turn the temperature control dial (driver) clockwise until 32
°
C (90
°
F) is displayed.
2. Check for hot air at discharge air outlets.
>> GO TO 2.
2.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1. Turn the temperature control dial (driver) counterclockwise until 18
°
C (60
°
F) is displayed.
2. Check for cold air at discharge air outlets.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
HAC-39, "Intake Door Motor Diagnosis Procedure"
Air Mix Door Motor (Passenger) Diagnosis Procedure
INFOID:0000000006243639
Regarding Wiring Diagram information, refer to
HAC-95, "Wiring Diagram - Automatic"
SYMPTOM:
• Discharge air temperature does not change.
• Air mix door motor does not operate.
Connector
Terminals
Connector
Terminals
Voltage (Approx.)
(+)
(-)
M50
28
M49
3
5V
Connector
Terminal
—
Voltage (Approx.)
M49
6
Ground
0V
Connector
Terminal
—
Voltage (Approx.)
M49
6
Ground
0.2 to 4.8V
2011 Pathfinder
AIR MIX DOOR MOTOR
HAC-35
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR (PASSENGER)
1.
CHECK AIR MIX DOOR MOTOR (PASSENGER) POSITION BALANCED RESISTOR (PBR) FEEDBACK
VOLTAGE
1. Turn ignition switch ON.
2. Using CONSULT-III, check "PAS MIX FDBCK" in "DATA MONITOR" mode in "HVAC". Refer to
.
3. Observe "PAS MIX FDBCK" voltage while rotating temperature control dial (passenger) between 32
°
C
(90
°
F) and 18
°
C (60
°
F).
Is the inspection result normal?
YES
>> • Air mix door motor (passenger) is OK.
• Inspect air mix door (passenger) for mechanical failure and repair if necessary. If air mix door
(passenger) is OK, refer to
HAC-112, "Component Function Check"
for insufficient cooling or
HAC-120, "Component Function Check"
for insufficient heating.
NO
>> GO TO 2.
2.
CHECK AIR MIX DOOR MOTOR (PASSENGER) CIRCUITS FOR OPEN AND SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect the A/C auto amp. harness connector M49 and the air mix door motor (passenger) harness
connector M143.
3. Check continuity between A/C auto amp. harness connector M49 terminals 2, 14 and the air mix door
motor (passenger) harness connector M143 terminals 5, 6.
4. Check continuity between A/C auto amp. harness connector M49 terminals 2, 14 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness as necessary.
3.
CHECK A/C AUTO AMP. FOR AIR MIX DOOR MOTOR (PASSENGER) POWER AND GROUND
1. Reconnect A/C auto amp. harness connector.
2. Turn ignition switch ON.
3. Rotate temperature control dial (passenger) to 32
°
C (90
°
F).
4. Check voltage between A/C auto amp. harness connector M49 terminal 2 and terminal 14 while rotating
temperature control dial (passenger) to 18
°
C (60
°
F) and back to 32
°
C (90
°
F).
Is the inspection result normal?
YES
>> GO TO 4.
Monitor Item
Condition
Results
PAS MIX FDBCK
Rotate temperature control dial (passenger) be-
tween 32
°
C (90
°
F) and 18
°
C (60
°
F)
Voltage varies between 0.2 and 4.8V.
Connector
Terminal
Connector
Terminal
Continuity
M49
14
M143
6
Yes
2
5
Connector
Terminal
—
Continuity
M49
14
Ground
No
2
Connector
Terminals
Condition Voltage
(Approx.)
(+) (-)
M49
2
14
Rotate temperature control dial (pas-
senger) to 18
°
C (60
°
F)
Battery voltage
14
2
Rotate temperature control dial (pas-
senger) to 32
°
C (90
°
F)
Battery voltage
2011 Pathfinder
HAC-36
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
AIR MIX DOOR MOTOR
NO
>> Replace A/C auto amp. Refer to
VTL-7, "Removal and Installation"
4.
CHECK AIR MIX DOOR MOTOR (PASSENGER) PBR CIRCUITS FOR OPEN AND SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect the A/C auto amp. harness connectors M49 and M50.
3. Check continuity between A/C auto amp. harness connector M49 terminal 3 and M50 terminal 28 and air
mix door motor (passenger) harness connector M143 terminal 1, 3.
4. Check continuity between A/C auto amp. harness connector M49 terminal 3, M50 terminal 28 and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness as necessary.
5.
CHECK PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN AND SHORT TO GROUND
1. Check continuity between A/C auto amp. harness connector M50 terminal 29 and air mix door motor (pas-
senger) harness connector M143 terminal 2.
2. Check continuity between A/C auto amp. harness connector M50 terminal 29 and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness as necessary.
6.
CHECK A/C AUTO AMP. FOR 5 VOLT REFERENCE (VREF), VREF RETURN, AND FEEDBACK SIGNAL
1. Reconnect A/C auto amp. harness connectors.
2. Turn ignition switch ON.
3. Check voltage between A/C auto amp. harness connector M49 terminal 3, and M50 terminal 28.
4. Check voltage between A/C auto amp. harness connector M50 terminal 29 and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace A/C auto amp. Refer to
VTL-7, "Removal and Installation"
Connector
Terminal
Connector
Terminal
Continuity
M49
3
M143
3
Yes
M50
28
1
Connector
Terminal
—
Continuity
M49
3
Ground
No
M50
28
Connector
Terminal
Connector
Terminal
Continuity
M50
29
M143
2
Yes
Connector
Terminal
—
Continuity
M50
29
Ground
No
Connector
Terminals
Connector
Terminals
Voltage (Approx.)
(+)
(-)
M50
28
M49
3
5V
Connector
Terminal
—
Voltage (Approx.)
M50
29
Ground
0V
2011 Pathfinder
AIR MIX DOOR MOTOR
HAC-37
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
7.
CHECK A/C AUTO AMP. FOR FEEDBACK SIGNAL
1. Reconnect the air mix door motor (passenger) harness connector M143.
2. Check voltage between A/C auto amp. harness connector M50 terminal 29 and ground.
Is the inspection result normal?
YES
>> Inspect air mix door (passenger) for binding or mechanical failure. If air mix door (passenger)
moves freely, replace A/C auto amp. Refer to
VTL-7, "Removal and Installation"
NO
>> Replace the air mix door motor (passenger). Refer to
VTL-29, "Removal and Installation"
Connector
Terminal
—
Voltage (Approx.)
M50
29
Ground
0.2 to 4.8V
2011 Pathfinder
HAC-38
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
INTAKE DOOR MOTOR
INTAKE DOOR MOTOR
System Description
INFOID:0000000006243640
SYSTEM DESCRIPTION
SYMPTOM:
• Intake door motor does not operate normally.
• Intake door does not change.
SYSTEM DESCRIPTION
Component Parts
Intake door control system components are:
• A/C auto amp.
• A/C and AV switch assembly
• Intake door motor (PRB built into the intake door motor)
• In-vehicle sensor
• Ambient sensor
• Optical sensor
• Intake sensor
System Operation
The intake door control determines the intake door position based on the position of the recirculation switch.
When the recirculation switch is depressed the intake door motor rotates closing off the fresh air inlet and
recirculating the cabin air. If the recirculation switch is depressed again, the intake door motor rotates in the
opposite direction, again allowing fresh air into the cabin.
In the AUTO mode, the A/C auto amp. determines the intake door position based on the ambient temperature,
the intake air temperature and the in-vehicle temperature. When the DEF, D/F, FOOT or OFF switches are
pushed, the A/C auto amp. sets the intake door at the fresh position.
Intake Door Control Specification
AWIIA0144GB
AWIIA0145GB
2011 Pathfinder
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст