Nissan Leaf. Manual — part 828
B2791 ELECTRIC COMPRESSOR
HAC-315
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITHOUT HEAT PUMP)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Check PDM (power delivery module). Refer to
.
Is the inspection result normal?
YES
>> Replace electric compressor. Refer to
HA-95, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning components.
HAC-316
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITHOUT HEAT PUMP)]
B27A0, B27A1 INTAKE DOOR MOTOR
B27A0, B27A1 INTAKE DOOR MOTOR
DTC Logic
INFOID:0000000010122026
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.
.
*: A/C auto amp. operates intake door motor according to target value of PBR opening angle at 40% when per-
forming self-diagnosis.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Set the vehicle to READY.
2. Select “Self Diagnostic Result” of “HVAC” using CONSULT.
3. Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-316, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010122027
Regarding Wiring Diagram information, refer to
1.
CHECK INTAKE DOOR MOTOR OPERATION
1. Turn power switch ON.
2. Operate intake switch and check by operation sound that intake door motor operates.
Does the intake door motor operate?
YES
>> GO TO 2.
NO
>> GO TO 8.
2.
CHECK INTAKE DOOR MOTOR PBR POWER SUPPLY
1. Disconnect intake door motor connector.
2. Turn power switch ON.
3. Check voltage between intake door motor harness connector and ground.
Is the inspection result normal?
DTC
Items
(CONSULT screen terms)
DTC detection condition
*
Possible cause
B27A0
INTAKE DOOR MOTOR
PBR opening angle of intake door motor is 50%
or more (PBR feedback signal voltage of intake
door motor is 2.5 V or more).
• Intake door motor
• Intake door motor system installa-
tion condition
• A/C auto amp.
• Harness or connectors
(The motor circuit is open or short-
ed.)
B27A1
PBR opening angle of intake door motor is 30%
or less (PBR feedback signal voltage of intake
door motor is 1.5 V or less).
+
−
Voltage
(Approx.)
Intake door motor
Connector
Terminal
M54
1
Ground
5 V
B27A0, B27A1 INTAKE DOOR MOTOR
HAC-317
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITHOUT HEAT PUMP)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
YES
>> GO TO 3.
NO
>> GO TO 7.
3.
CHECK INTAKE DOOR MOTOR PBR GROUND CIRCUIT FOR OPEN
1. Turn power switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between intake 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 INTAKE DOOR MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN
Check continuity between intake 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 INTAKE DOOR MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR SHORT
Check continuity between intake door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK INTAKE DOOR MOTOR PBR
Check intake door motor PBR. Refer to
HAC-318, "Component Inspection (PBR)"
.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-347, "Removal and Installation"
.
NO
>> Replace intake door motor. Refer to
HAC-362, "INTAKE DOOR MOTOR : Removal and Installa-
.
7.
CHECK INTAKE DOOR MOTOR PBR POWER SUPPLY CIRCUIT FOR OPEN
1. Turn power switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between intake door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-347, "Removal and Installation"
.
NO
>> Repair harness or connector.
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M54
3
M55
30
Yes
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M54
2
M55
38
Yes
Intake door motor
—
Continuity
Connector
Terminal
M54
2
Ground
No
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M54
1
M55
27
Yes
HAC-318
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITHOUT HEAT PUMP)]
B27A0, B27A1 INTAKE DOOR MOTOR
8.
CHECK INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1. Turn power switch OFF.
2. Disconnect intake door motor connector, and A/C auto amp. connector.
3. Check continuity between intake door motor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair harness or connector.
9.
CHECK INTAKE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT
Check continuity between intake door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair harness or connector.
10.
CHECK INTAKE DOOR MOTOR
1. Turn power switch OFF.
2. Check intake door motor. Refer to
HAC-319, "Component Inspection (Motor)"
.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Replace intake door motor. Refer to
HAC-362, "INTAKE DOOR MOTOR : Removal and Installa-
.
11.
CHECK INSTALLATION OF INTAKE DOOR MOTOR SYSTEM
Check intake door motor system is properly installed. Refer to
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-347, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning components.
Component Inspection (PBR)
INFOID:0000000010122028
1.
CHECK INTAKE DOOR MOTOR PBR
Check resistance between intake door motor terminals.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace intake door motor. Refer to
HAC-204, "INTAKE DOOR MOTOR : Removal and Installa-
.
Intake door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M54
5
M55
21
Yes
6
1
Intake door motor
—
Continuity
Connector
Terminal
M54
5
Ground
No
6
Terminal
Resistance (
Ω)
1
2
Except 0 or
∞
3
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