Nissan Qashqai J11. Manual — part 1160
HAC-276
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL HEATER ]
B24B7 INTAKE DOOR MOTOR
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. connector.
3.
Check continuity between intake 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 INTAKE DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT
Check continuity between intake 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 INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. connector.
3.
Check continuity between intake 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 INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT
1.
Check continuity between intake door motor harness connector and ground.
2.
Check voltage between intake door motor harness connector and ground.
Intake door motor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M386
2
M50
8
Existed
Intake door motor
—
Continuity
Connector
Terminal
M386
2
Ground
Not existed
Intake door motor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M386
1
M50
11
Existed
3
12
4
27
6
28
Intake door motor
—
Continuity
Connector
Terminal
M386
1
Ground
Not existed
3
4
6
B24B7 INTAKE DOOR MOTOR
HAC-277
< 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 INTAKE DOOR MOTOR
Check intake door motor. Refer to
HAC-277, "Component Inspection"
Is the inspection result normal?
YES
>> Replace A/C amp. Refer to
HAC-295, "Removal and Installation"
.
NO
>> Replace intake door motor. Refer to
HAC-301, "INTAKE DOOR MOTOR : Removal and Installa-
.
Component Inspection
INFOID:0000000010499413
1.
CHECK INTAKE DOOR MOTOR
1.
Remove intake door motor. Refer to
HAC-301, "INTAKE DOOR MOTOR : Removal and Installation"
2.
Check resistance between intake door motor terminals. Refer to applicable table for the normal value.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace intake door motor. Refer to
HAC-301, "INTAKE DOOR MOTOR : Removal and Installa-
.
+
−
Voltage
Intake door motor
Connector
Terminal
M386
1
Ground
0 V
3
4
6
Terminal
Resistance (
Ω
)
(Approx.)
2
1
90
3
4
6
HAC-278
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL HEATER ]
B24B9 MODE DOOR MOTOR
B24B9 MODE DOOR MOTOR
DTC Logic
INFOID:0000000010499414
DTC DETECTION LOGIC
POSSIBLE CAUSE
[CIRCUIT SHORT TO BATTERY]
• Harness and connector (Mode door motor circuit is shorted to battery)
• Mode door motor
• A/C amp.
[CIRC SHORT TO GRND OR OPEN]
• Harness and connector (Mode door motor circuit is open or shorted to ground)
• Mode 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-278, "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:0000000010499415
1.
CHECK MODE DOOR MOTOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect mode door motor connector.
3.
Turn ignition switch ON.
4.
Check voltage between mode door motor harness connector and ground for several seconds after press-
ing each MODE switch.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
B24B9
MODE DOOR MOTOR
(Mode door motor)
[CIRCUIT SHORT TO BATTERY]
Detect short to battery circuit of mode door motor cir-
cuits.
[CIRC SHORT TO GRND OR
OPEN]
Detect open or short to ground circuit of mode door
motor circuits.
+
−
Voltage
Mode door motor
Connector
Terminal
M387
2
Ground
11 - 14 V
B24B9 MODE DOOR MOTOR
HAC-279
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL HEATER ]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. connector.
3.
Check continuity between mode 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 MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT
Check continuity between mode 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 MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect A/C amp. connector.
3.
Check continuity between mode 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 MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT
1.
Check continuity between mode door motor harness connector and ground.
2.
Check voltage between mode door motor harness connector and ground.
Mode door motor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M387
2
M50
8
Existed
Mode door motor
—
Continuity
Connector
Terminal
M387
2
Ground
Not existed
Mode door motor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M387
1
M50
13
Existed
3
14
4
29
6
30
Mode door motor
—
Continuity
Connector
Terminal
M387
1
Ground
Not existed
3
4
6
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