Nissan March K13. Instruction — part 393
HAC-106
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
A/C SWITCH
Is inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
CHECK CONTINUITY A/C CONTROL GROUND CIRCUIT
1.
Turn the ignition switch OFF.
2.
Check continuity between A/C control harness connector and the ground.
Is inspection result normal?
YES
>> Replace the A/C switch (A/C control).
NO
>> Repair the harness or connector.
5.
CHECK CONTINUITY BETWEEN A/C CONTROL AND THERMO CONTROL AMP.
1.
Turn the ignition switch OFF.
2.
Disconnect the thermo control amp. connector.
3.
Check continuity between A/C control harness connector and thermo control amp. harness connector.
Is inspection result normal?
YES
>> GO TO 6.
NO
>> Repair the harness or connector.
6.
CHECK CONTINUITY BETWEEN THERMO CONTROL AMP. AND BCM
Check continuity between thermo control amp. harness connector and BCM harness connector.
Is inspection result normal?
YES
>> GO TO 7.
NO
>> Repair the harness or connector.
7.
CHECK CONTINUITY BETWEEN A/C CONTROL AND GROUND
Check continuity between A/C control harness connector and the ground.
(+)
(
−
)
Output waveform
A/C control
—
Connector
Terminal
M53
14
Ground
Approx. 1.0
∼
1.5 V
JPMIA0012GB
A/C control
—
Continuity
Connector
Terminal
M53
6
Ground
Existed
A/C control
Thermo control amp.
Continuity
Connector
Terminal
Connector
Terminal
M53
14
M44
2
Existed
Thermo control amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M44
3
M65
27
Existed
A/C SWITCH
HAC-107
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is inspection result normal?
YES
>> Replace the BCM. Refer to
XX-XX, "*****"
.
NO
>> Repair the harness or connector.
A/C control
—
Continuity
Connector
Terminal
M53
12
Ground
Not existed
HAC-108
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
BLOWER FAN ON SIGNAL
BLOWER FAN ON SIGNAL
Component Function Check
INFOID:0000000006024133
1.
CHECK BLOWER FAN ON SIGNAL
With CONSULT-III
1.
Turn the ignition switch ON.
2.
Select the “FAN ON SIG” on “DATA MONITOR” in BCM.
3.
Check the fan ON signal when the fan control dial is operated.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> Refer to
HAC-108, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000006024134
1.
CHECK BLOWER FAN ON SIGNAL OUTPUT
1.
Turn the ignition switch OFF.
2.
Disconnect the A/C control connector.
3.
Turn the ignition switch ON.
4.
Check output waveform between A/C control harness connector and the ground with using oscilloscope.
Is inspection result normal?
YES
>> Replace the A/C control.
NO
>> GO TO 2.
2.
CHECK CONTINUITY BETWEEN A/C CONTROL AND BCM
1.
Turn the ignition switch OFF.
2.
Disconnect the BCM connector.
3.
Check continuity between A/C control harness connector and BCM harness connector.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the harness or connector.
3.
CHECK CONTINUITY BETWEEN A/C CONTROL AND GROUND
Monitor item
Condition
Status
FAN ON SIG
Fan control dial
OFF position
Off
Except OFF position
On
(+)
(
−
)
Output waveform
A/C control
—
Connector
Terminal
M53
5
Ground
Approx. 1.5
∼
2.0 V
PIIB7730J
A/C control
BCM
Continuity
Connector
Terminal
Connector
Terminal
M53
5
M65
28
Existed
BLOWER FAN ON SIGNAL
HAC-109
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Check continuity between A/C control harness connector and the ground.
Is inspection result normal?
YES
>> Replace the BCM. Refer to
XX-XX, "*****"
.
NO
>> Repair the harness or connector.
A/C control
—
Continuity
Connector
Terminal
M53
5
Ground
Not existed
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