Nissan Cube. Instruction — part 553
HAC-50
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
INTAKE DOOR MOTOR
INTAKE DOOR MOTOR
Description
INFOID:0000000009950997
COMPONENT DESCRIPTION
• The intake door motor (1) is installed to A/C unit assembly.
• The A/C auto amp. sends the control signal to Intake door motor.
When intake door motor receives the control signal, intake door is
moved to appropriate position by PBR (Potentio Balance Resistor)
opening angle indication signal.
Intake door motor circuit
Diagnosis Procedure
INFOID:0000000009950998
POWER SUPPLY CIRCUIT
1.
CHECK INTAKE DOOR MOTOR DRIVE SIGNAL
1.
Turn the ignition switch ON.
2.
Check voltage between intake door motor harness connector and the ground when intake switch is oper-
ated.
Is inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK CONTINUITY BETWEEN A/C AUTO AMP. AND INTAKE DOOR MOTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the A/C auto amp. connector.
3.
Disconnect the intake door motor connector.
4.
Check continuity between A/C auto amp. harness connector and intake door motor harness connector.
: Vehicle front
JPIIA1741ZZ
JPIIA1656GB
(+)
(
−
)
Condition
Voltage
(Approx.)
Intake door motor
—
Connector
Terminal
M54
5
Ground
FRE
→
REC
12 V
6
REC
→
FRE
INTAKE DOOR MOTOR
HAC-51
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the harnesses or connectors.
3.
CHECK CONTINUITY BETWEEN INTAKE DOOR MOTOR AND GROUND
Check continuity between intake door motor harness connector and the ground.
Is inspection result normal?
YES
>> Replace the A/C auto amp.
NO
>> Repair the harnesses or connectors.
4.
CHECK INTAKE DOOR MOTOR
Perform the intake door motor component inspection. Refer to
HAC-53, "Component Inspection"
.
Is inspection result normal?
YES
>> Replace the A/C auto amp.
NO
>> Replace the intake door motor.
PBR CIRCUIT
1.
CHECK POWER SUPPLY OF INTAKE DOOR MOTOR PBR
1.
Turn the ignition switch ON.
2.
Check voltage between intake door motor harness connector and the ground.
Is inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK CONTINUITY BETWEEN INTAKE DOOR MOTOR AND A/C AUTO AMP.-1
1.
Turn the ignition switch OFF.
2.
Disconnect the intake door motor connector.
3.
Disconnect the A/C auto amp. connector.
4.
Check continuity between intake door motor harness connector and A/C auto amp. harness connector.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the harnesses or connectors.
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M54
5
M50
13
Existed
6
12
Intake door motor
—
Continuity
Connector
Terminal
M54
5
Ground
Not existed
6
(+)
(
−
)
Voltage
(Approx.)
Intake door motor
—
Connector
Terminal
M54
1
Ground
5 V
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M54
1
M50
3
Existed
HAC-52
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
INTAKE DOOR MOTOR
3.
CHECK CONTINUITY INTAKE DOOR MOTOR AND GROUND-1
Check continuity between intake door motor and the ground.
Is inspection result normal?
YES
>> Replace the A/C auto amp.
NO
>> Repair the harnesses or connectors.
4.
CHECK INTAKE DOOR MOTOR PBR GROUND
1.
Turn the ignition switch OFF.
2.
Disconnect the A/C auto amp. connector.
3.
Check continuity between intake door motor harness connector and the ground.
Is inspection result normal?
YES
>> GO TO 5.
NO
>> Repair the harnesses or connectors.
5.
CHECK INTAKE DOOR MOTOR PBR FEEDBACK SIGNAL
1.
Connect the A/C auto amp. connector.
2.
Connect the intake door motor connector.
3.
Turn the ignition switch ON.
4.
Check voltage between A/C auto amp. and the ground when intake switch is operated.
Is inspection result normal?
YES
>> Replace the A/C auto amp.
NO
>> GO TO 6.
6.
CHECK CONTINUITY INTAKE DOOR MOTOR AND A/C AUTO AMP.-2
1.
Turn the ignition switch OFF.
2.
Disconnect the A/C auto amp. connector.
3.
Disconnect the intake door motor connector.
4.
Check continuity between intake door motor and A/C auto amp.
Is inspection result normal?
YES
>> GO TO 7.
NO
>> Repair the harnesses or connectors.
7.
CHECK CONTINUITY INTAKE DOOR MOTOR AND GROUND-2
Check continuity between intake door motor harness connector and the ground.
Intake door motor
—
Continuity
Connector
Terminal
M54
1
Ground
Not existed
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M54
3
M50
6
Existed
(+)
(
−
)
Condition
Voltage
(Approx.)
A/C auto amp.
—
Connector
Terminal
M54
1
Ground
FRE
4.5 V
REC
0.5 V
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M54
2
M51
26
Existed
INTAKE DOOR MOTOR
HAC-53
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is inspection result normal?
YES
>> Replace the intake door motor.
NO
>> Repair the harnesses or connectors.
Component Inspection
INFOID:0000000009950999
1.
CHECK INTAKE DOOR MOTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the intake door motor connector.
3.
Supply to the intake door motor terminal directly, confirm the motor operation by listening the sound or by
visually.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the intake door motor.
Intake door motor
—
Continuity
Connector
Terminal
M54
2
Ground
Not existed
Terminal
Operation
(+)
(
−
)
5
6
To REC
6
5
To FRE
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