Nissan Qashqai J11. Manual — part 1161
HAC-280
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL HEATER ]
B24B9 MODE DOOR MOTOR
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK MODE DOOR MOTOR
Check mode door motor. Refer to
HAC-280, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace A/C amp. Refer to
HAC-295, "Removal and Installation"
.
NO
>> Replace mode door motor. Refer to
HAC-301, "MODE DOOR MOTOR : Removal and Installa-
.
Component Inspection
INFOID:0000000010499416
1.
CHECK MODE DOOR MOTOR
1.
Remove mode door motor. Refer to
HAC-301, "MODE DOOR MOTOR : Removal and Installation"
2.
Check resistance between mode door motor terminals. Refer to applicable table for the normal value.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace mode door motor. Refer to
HAC-301, "MODE DOOR MOTOR : Removal and Installa-
.
+
−
Voltage
Mode door motor
Connector
Terminal
M387
1
Ground
0 V
3
4
6
Terminal
Resistance (
Ω
)
(Approx.)
2
1
90
3
4
6
B24BB LEFT AIR MIX DOOR MOTOR
HAC-281
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL HEATER ]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B24BB LEFT AIR MIX DOOR MOTOR
DTC Logic
INFOID:0000000010499417
DTC DETECTION LOGIC
POSSIBLE CAUSE
[CIRCUIT SHORT TO BATTERY]
• Harness and connector (Air mix door motor circuit is shorted to battery)
• Air Mix door motor
• A/C amp.
[CIRC SHORT TO GRND OR OPEN]
• Harness and connector (Air mix door motor circuit is open or shorted to ground)
• Air mix door motor
• A/C amp.
FAIL-SAFE
—
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch ON.
2.
Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3.
Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-281, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010499418
1.
CHECK AIR MIX DOOR MOTOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect air mix door motor connector.
3.
Turn ignition switch ON.
4.
Check voltage between air mix door motor harness connector and ground for several seconds after oper-
ating the temperature control dial.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK AIR MIX DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
B24BB
LEFT AIR MIX DOOR MOTOR
(Left side air mix door motor)
[CIRCUIT SHORT TO BATTERY]
Detect short to battery circuit of air mix door
motor circuits.
[CIRC SHORT TO GRND OR OPEN]
Detect open or short to ground circuit of air mix
door motor circuits.
+
−
Voltage
Air mix door motor
Connector
Terminal
M388
2
Ground
11 - 14 V
HAC-282
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL HEATER ]
B24BB LEFT AIR MIX DOOR MOTOR
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. connector.
3.
Check continuity between air mix door motor harness connector and A/C amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK AIR MIX DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT
Check continuity between air mix door motor harness connector and ground.
Is the inspection result normal?
YES
>> Replace A/C amp. Refer to
HAC-295, "Removal and Installation"
.
NO
>> Repair harness or connector.
4.
CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. connector.
3.
Check continuity between air mix door motor harness connector and A/C amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT
1.
Check continuity between air mix door motor harness connector and ground.
2.
Check voltage between air mix door motor harness connector and ground.
Air mix door motor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M388
2
M50
24
Existed
Air mix door motor
—
Continuity
Connector
Terminal
M388
2
Ground
Not existed
Air mix door motor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M388
1
M50
9
Existed
3
10
4
25
6
26
Air mix door motor
—
Continuity
Connector
Terminal
M388
1
Ground
Not existed
3
4
6
B24BB LEFT AIR MIX DOOR MOTOR
HAC-283
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL HEATER ]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK AIR MIX DOOR MOTOR
Check air mix door motor. Refer to
HAC-283, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace A/C amp. Refer to
HAC-295, "Removal and Installation"
.
NO
>> Replace air mix door motor. Refer to
HAC-300, "AIR MIX DOOR MOTOR : Removal and Installa-
.
Component Inspection
INFOID:0000000010499419
1.
CHECK AIR MIX DOOR MOTOR
1.
Remove air mix door motor. Refer to
HAC-300, "AIR MIX DOOR MOTOR : Removal and Installation"
.
2.
Check resistance between air mix door motor terminals. Refer to applicable table for the normal value.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace air mix door motor. Refer to
HAC-300, "AIR MIX DOOR MOTOR : Removal and Installa-
.
+
−
Voltage
Air mix door motor
Connector
Terminal
M388
1
Ground
0 V
3
4
6
Terminal
Resistance (
Ω
)
(Approx.)
2
1
90
3
4
6
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