Nissan Leaf. Manual — part 777
B27A2, B27A3, B27A4, B27A5 AIR MIX DOOR MOTOR
HAC-111
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITH HEAT PUMP)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Check A/C relay circuit. Refer to
EVC-385, "Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> Repair harness or connector between A/C relay and air mix door motor.
NO
>> Repair or replace malfunctioning components.
3.
CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1. Turn power switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between air mix door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK AIR MIX DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT
Check continuity between air mix door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK AIR MIX DOOR MOTOR
Check air mix door motor. Refer to
HAC-111, "Component Inspection"
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-187, "Removal and Installation"
.
NO
>> Replace air mix door motor. Refer to
HAC-205, "AIR MIX DOOR MOTOR : Removal and Installa-
.
Component Inspection
INFOID:0000000010121823
1.
CHECK AIR MIX DOOR MOTOR
1. Remove air mix door motor. Refer to
HAC-205, "AIR MIX DOOR MOTOR : Removal and Installation"
.
2. Check resistance between air mix door motor terminals. Refer to applicable table for the normal value.
Air mix door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M146
1
M55
9
Yes
2
8
5
7
6
6
Air mix door motor
—
Continuity
Connector
Terminal
M146
1
Ground
No
2
5
6
Terminal
Resistance (
Ω)
(Approx.)
4
1
90
2
5
6
HAC-112
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITH HEAT PUMP)]
B27A2, B27A3, B27A4, B27A5 AIR MIX DOOR MOTOR
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace air mix door motor. Refer to
HAC-205, "AIR MIX DOOR MOTOR : Removal and Installa-
.
B27A6, B27A7, B27A8, B27A9 MODE DOOR MOTOR
HAC-113
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITH HEAT PUMP)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B27A6, B27A7, B27A8, B27A9 MODE DOOR MOTOR
DTC Logic
INFOID:0000000010121824
DTC DETECTION LOGIC
NOTE:
• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010.
.
• If mode door motors DTC (B27A6 – B27A9) are detected, there is probably a disconnected connector or an
open circuit in mode door motor drive power supply harness.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn power switch ON.
2. Select “Self Diagnostic Result” of “HVAC” using CONSULT.
3. Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-113, "Diagnosis Procedure"
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010121825
Regarding Wiring Diagram information, refer to
1.
CHECK MODE DOOR MOTOR POWER SUPPLY
1. Turn power switch OFF.
2. Disconnect mode door motor connector.
3. Turn power switch ON.
4. Check voltage between mode door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK A/C RELAY CIRCUIT
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B27A6
MODE DOOR MOTOR
Short or open circuit of mode door motor drive
signal terminal 1.
• Mode door motor
• A/C auto amp.
• Harness or connectors
(The motor circuit is open or short-
ed.)
B27A7
Short or open circuit of mode door motor drive
signal terminal 2.
B27A8
Short or open circuit of mode door motor drive
signal terminal 3.
B27A9
Short or open circuit of mode door motor drive
signal terminal 4.
+
−
Voltage
(Approx.)
Mode door motor
Connector
Terminal
M142
4
Ground
Battery voltage
HAC-114
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITH HEAT PUMP)]
B27A6, B27A7, B27A8, B27A9 MODE DOOR MOTOR
Check A/C relay circuit. Refer to
EVC-385, "Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> Repair harness or connector between A/C relay and mode door motor.
NO
>> Repair or replace malfunctioning components.
3.
CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1. Turn power switch OFF.
2. Disconnect 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 harness or connector.
4.
CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT
Check continuity between mode door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK MODE DOOR MOTOR
Check mode door motor. Refer to
HAC-114, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-187, "Removal and Installation"
.
NO
>> Replace mode door motor. Refer to
HAC-205, "MODE DOOR MOTOR : Removal and Installa-
.
Component Inspection
INFOID:0000000010121826
1.
CHECK MODE DOOR MOTOR
1. Remove mode door motor. Refer to
HAC-205, "MODE DOOR MOTOR : Removal and Installation"
2. Check resistance between mode door motor terminals. Refer to applicable table for the normal value.
Mode door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M142
1
M55
5
Yes
2
4
5
3
6
2
Mode door motor
—
Continuity
Connector
Terminal
M142
1
Ground
No
2
5
6
Terminal
Resistance (
Ω)
(Approx.)
4
1
90
2
5
6
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст