Infiniti QX56 (JA60). Manual — part 595
AIR MIX DOOR MOTOR
HAC-37
< COMPONENT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
6.
CHECK A/C AUTO AMP. FOR PBR POWER AND GROUND
1. Reconnect A/C auto amp. harness connector.
2. Turn ignition switch ON.
3. Check voltage between A/C auto amp. harness connector M50
(A) terminal 28 and M49 (B) terminal 3.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7.
7.
CHECK PBR REFERENCE VOLTAGE CIRCUIT FOR SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect the A/C auto amp. harness connector.
3. Check continuity between A/C auto amp. harness connector
M49 terminal 29 and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
NO
>> Repair or replace harness as necessary.
8.
CHECK PBR REFERENCE VOLTAGE AND GROUND CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect the A/C auto amp. harness connector.
3. Check continuity between A/C auto amp. harness connector
M50 (A) terminal 28 and M49 (B) terminal 3.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 9.
9.
CHECK PBR REFERENCE VOLTAGE CIRCUIT FOR OPEN
1. Disconnect the air mix door motor (passenger) harness connec-
tor.
2. Check continuity between air mix door motor (passenger) har-
ness connector M143 (B) terminal 3, 2 and A/C auto amp. har-
ness connector M49 (C) terminal 3 and M50 (A) terminal 28.
Is the inspection result normal?
YES
>> Replace air mix door motor (passenger). Refer to
31, "Removal and Installation"
.
NO
>> Repair or replace harness as necessary.
10.
CHECK PBR FEEDBACK VOLTAGE
Connector
Terminals
Voltage (Ap-
prox.)
(+)
(-)
A/C auto amp.: M49
28
3
5V
AWIIA0099ZZ
Continuity should not exist.
AWIIA0241ZZ
Continuity should exist.
AWIIA0101ZZ
28 - 3
: Continuity should exist.
3 - 2
: Continuity should exist.
AWIIA0121ZZ
HAC-38
< COMPONENT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
AIR MIX DOOR MOTOR
1. Reconnect the A/C auto amp. harness connector.
2. Turn ignition switch ON.
3. Check voltage between A/C auto amp. harness connector M50
terminal 29 and ground while rotating temperature control dial
(passenger) from 32
°C (90°F) to 18° (60°F).
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> GO TO 11.
11.
CHECK PBR FEEDBACK SIGNAL CIRCUIT FOR SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. harness connector.
3. Check continuity between A/C auto amp. harness connector
M50 terminal 29 and ground.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
NO
>> Repair or replace harness as necessary.
12.
CHECK PBR FEEDBACK CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect the air mix door motor (passenger) harness connec-
tor and A/C auto amp. harness connector.
3. Check continuity between air mix door motor (passenger) har-
ness connector M143 (B) terminal 4 and A/C auto amp. harness
connector M50 (A) terminal 29.
Is the inspection result normal?
YES
>> Replace air mix door motor (passenger). Refer to
31, "Removal and Installation"
.
NO
>> Repair or replace harness as necessary.
Voltage
: Approx. .5V - 4.5V
AWIIA0131ZZ
Continuity should not exist.
AWIIA0132ZZ
Continuity should exist.
AWIIA0133ZZ
INTAKE DOOR MOTOR
HAC-39
< COMPONENT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
INTAKE DOOR MOTOR
System Description
INFOID:0000000005147694
SYSTEM DESCRIPTION
SYMTOM:
• 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, FLOOR or OFF switches are
pushed, the A/C auto amp. sets the intake door at the fresh position.
Intake Door Control Specification
AWIIA0144GB
AWIIA0145GB
HAC-40
< COMPONENT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
INTAKE DOOR MOTOR
COMPONENT DESCRIPTION
Intake door motor
The intake door motor is attached to the intake 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.
Intake Door Motor Component Function Check
INFOID:0000000005147695
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - REC (
)
1. Press the mode switch to vent mode(
).
2. Press REC (
) switch. The REC (
) indicator should illuminate.
3. Press REC (
) switch again. The REC (
) indicator should go out.
4. Listen for intake door position change (you should hear blower sound change slightly).
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
HAC-40, "Intake Door Motor Diagnosis Procedure"
Intake Door Motor Diagnosis Procedure
INFOID:0000000005147696
Regarding Wiring Diagram information, refer to
SYMPTOM:
• Intake door does not change.
• Intake door motor does not operate normally.
DIAGNOSTIC PROCEDURE FOR INTAKE DOOR MOTOR
1.
CHECK A/C AUTO AMP. FOR POWER AND GROUND
1. Turn ignition switch ON.
2. Check voltage between A/C auto amp. harness connector M49
terminal 21 and terminal 22 while placing the HVAC system into
self-diagnostic mode.
Is the inspection result normal?
OK
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK INTAKE DOOR MOTOR CIRCUITS FOR SHORT TO GROUND
WJIA0552E
Connector
Terminals
Condition
Voltage
(Approx.)
(+) (-)
A/C auto amp.:
M49
21
22
Self-diagnostic
mode
Battery volt-
age
AWIIA0146ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст