Nissan Cube. Instruction — part 552
HAC-46
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
AIR MIX DOOR MOTOR
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the air mix door motor.
MODE DOOR MOTOR
HAC-47
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
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HAC
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MODE DOOR MOTOR
Description
INFOID:0000000009950994
COMPONENT DESCRIPTION
• The mode door motor (1) is installed to the A/C unit assembly.
• Step motor system is adopted for the mode door motor.
• When a drive signal is input from auto amp. to door motor, a step
motor built into the door motor rotates according to the drive signal,
and then stops at the position of target door.
DRIVE SYSTEM OF STEP MOTOR TYPE DOOR MOTOR
• Motor is actuated in sequence by energizing four drive coils.
• Rotation direction can be changed by changing pattern of excitation.
Diagnosis Procedure
INFOID:0000000009950995
1.
CHECK FUSE
Check 10A fuse [No. 2, located in the fuse block (J/B)].
NOTE:
Refer to
PG-77, "Fuse, Connector and Terminal Arrangement"
.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Replace fuse after repairing the applicable circuit.
2.
CHECK POWER SUPPLY OF MODE DOOR MOTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the mode door motor connector.
3.
Turn the ignition switch ON.
4.
Check voltage between mode door motor harness connector and the ground.
JPIIA1753ZZ
SJIA0971E
(+)
(
−
)
Voltage
(Approx.)
Mode door motor
—
Connector
Terminal
M56
5
Ground
Battery voltage
HAC-48
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
MODE DOOR MOTOR
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the harnesses or connectors.
3.
CHECK CONTINUITY BETWEEN A/C AUTO AMP. AND MODE DOOR MOTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the A/C auto amp. connector.
3.
Check continuity between mode door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair the harnesses or connectors.
4.
CHECK CONTINUITY BETWEEN A/C AUTO AMP. AND GROUND
Check continuity between A/C auto amp. harness connector and the ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair the harnesses or connectors.
5.
CHECK MODE DOOR MOTOR
Perform the component inspection of mode door motor. Refer to
HAC-48, "Component Inspection"
Is inspection result normal?
YES
>> Replace the A/C auto amp.
NO
>> Replace the mode door motor.
Component Inspection
INFOID:0000000009950996
1.
CHECK MODE DOOR MOTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the mode door motor connector.
3.
Check the resistance between mode door motor terminals. Refer to the applicable table for the normal
value.
Mode door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M56
1
M51
32
Existed
2
31
3
30
4
29
A/C auto amp.
—
Continuity
Connector
Terminal
M51
29
Ground
Not existed
30
31
32
Terminal
Resistance:
Ω
(Approx.)
5
1
90
2
3
4
MODE DOOR MOTOR
HAC-49
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK CONTINUITY MODE DOOR MOTOR SUB HARNESS
Check the sub harness continuity with the following figure.
Is the inspection result normal?
YES
>> Replace the mode door motor.
NO
>> Repair the harnesses or connectors.
JPIIA1747GB
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