Nissan March K13. Instruction — part 380
HAC-54
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
MODE DOOR MOTOR
Is it installed normally?
YES
>> INSPECTION END
NO
>> Repair or adjust control linkage.
INTAKE DOOR MOTOR
HAC-55
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
INTAKE DOOR MOTOR
Diagnosis Procedure
INFOID:0000000006024042
1.
PERFORM SELF-DIAGNOSIS
Perform self-diagnosis function. Refer to
HAC-22, "Diagnosis Description"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR
Check voltage between intake door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK SIGNAL FOR INTAKE DOOR MOTOR
Confirm A/C LAN signal between intake door motor harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK INTAKE DOOR MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect intake door motor connector.
3.
Check continuity between intake door motor harness connector and ground.
Is the inspection result normal?
YES
>> Replace intake door motor.
NO
>> Repair harness or connector.
5.
CHECK INTAKE DOOR CONTROL LINKAGE
Check intake door control linkage is properly installed. Refer to
XX-XX, "*****"
.
(+)
(
−
)
Voltage
(Approx.)
Intake door motor
—
Connector
Terminal
M54
1
Ground
12 V
(+)
(
−
)
Voltage
Intake door motor
—
Connector
Terminal
M54
3
Ground
SJIA1453J
Intake door motor
—
Continuity
Connector
Terminal
M54
2
Ground
Existed
HAC-56
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
INTAKE DOOR MOTOR
Is it installed normally?
YES
>> INSPECTION END
NO
>> Repair or adjust control linkage.
BLOWER MOTOR
HAC-57
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
BLOWER MOTOR
Component Function Check
INFOID:0000000006024045
1.
CHECK OPERATION
1.
Warm up the engine.
2.
Operate the fan control switch. Check that the fan speed and indicator unit are switched for all fan speeds.
Does it operate normally?
YES
>> INSPECTION END
NO
>> Perform the diagnosis for the blower motor. Refer to
.
Diagnosis Procedure
INFOID:0000000006024046
1.
CHECK FUSE
Check 15A fuses [Nos. 14 and 16, located in the fuse block (J/B)].
NOTE:
Refer to
XX-XX, "*****"
.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the corresponding fuse.
2.
CHECK POWER SUPPLY OF BLOWER MOTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the blower motor connector.
3.
Turn the ignition switch ON.
4.
Check voltage between blower motor harness connector and the ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK BLOWER MOTOR RELAY
1.
Turn the ignition switch OFF.
2.
Check the blower motor relay. Refer to
HAC-58, "Component Inspection"
Is inspection result normal?
YES
>> Repair the harness or connector between blower motor and fuse.
NO
>> Replace the blower motor relay.
4.
CHECK VOLTAGE BETWEEN FAN CONTROL AMP. AND GROUND
1.
Connect the blower motor connector.
2.
Disconnect the fan control amp. connector.
3.
Turn the ignition switch ON.
4.
Check voltage between fan control amp. harness connector and the ground.
Is inspection result normal?
YES
>> GO TO 6.
(+)
(
−
)
Voltage
(Approx.)
Blower motor
—
Connector
Terminal
M39
1
Ground
Battery voltage
(+)
(
−
)
Voltage
(Approx.)
Blower motor
—
Connector
Terminal
M81
1
Ground
Battery voltage
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