Nissan Leaf. Manual — part 825
B2785, B2786 ELECTRIC COMPRESSOR
HAC-303
< 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
Is the inspection result normal?
YES
>> Replace electric compressor. Refer to
HA-95, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
HAC-304
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITHOUT HEAT PUMP)]
B2787 ELECTRIC COMPRESSOR
B2787 ELECTRIC COMPRESSOR
DTC Logic
INFOID:0000000010122014
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn power switch OFF.
2. Set the vehicle to READY.
3. Operate the automatic air conditioning system.
4. Set the temperature to full cold and wait at least 2 seconds.
5. Select “Self Diagnostic Result” of “HVAC” using CONSULT.
6. Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-304, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010122015
1.
CHECK LI-ION BATTERY
Check Li-ion battery. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK REFRIGERANT FOR LEAKAGES
Check refrigerant for leakages. Refer to
HA-84, "Check Refrigerant Leakage"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning parts.
3.
CHECK COOLING FAN OPERATION
1. Set the vehicle to READY.
2. Operate the automatic air conditioning system.
3. Check that the cooling fan is operating.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Check cooling fan. Refer to
EVC-367, "Component Function Check"
.
4.
CHECK REFRIGERANT CYCLE
Check refrigerant cycle. Refer to
Is the inspection result normal?
YES
>> Replace electric compressor. Refer to
HA-95, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B2787
COMP VOLTAGE SATURA-
TION
When the motor voltage 140% or more relative
to the inverter output voltage.
• Li-ion battery
• Electric compressor
(Discharge pressure increase)
• Cooling fan
• Overfilled refrigerant
B2788 ELECTRIC COMPRESSOR
HAC-305
< 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
B2788 ELECTRIC COMPRESSOR
DTC Logic
INFOID:0000000010122016
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn power switch OFF.
2. Set the vehicle to READY.
3. Operate the automatic air conditioning system.
4. Set the temperature to full cold and wait at least 2 seconds.
5. Select “Self Diagnostic Result” of “HVAC” using CONSULT.
6. Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-305, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010122017
1.
CHECK REFRIGERANT FOR LEAKAGES
Check refrigerant for leakages. Refer to
HA-84, "Check Refrigerant Leakage"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK COOLING FAN OPERATION
1. Set the vehicle to READY.
2. Operate the automatic air conditioning system.
3. Check that the cooling fan is operating.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check cooling fan. Refer to
EVC-367, "Component Function Check"
.
3.
CHECK ELECTRIC COMPRESSOR OPERATION
Check electric compressor operation.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace electric compressor. Refer to
HA-95, "Removal and Installation"
.
4.
CHECK REFRIGERANT CYCLE
Check refrigerant cycle. Refer to
Is the inspection result normal?
YES
>> Replace electric compressor. Refer to
HA-95, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B2788
COMP OVER CURRENT
When the electric compressor is not operated
under the following conditions:
• Within 90 seconds after starting
• Motor current is 35.1 A or more
• 3 times in a 5 second interval
• Electric compressor
(Discharge pressure increase)
(Inverter internal short-circuit)
(Stuck compressor)
• Cooling fan
HAC-306
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITHOUT HEAT PUMP)]
B2789 ELECTRIC COMPRESSOR
B2789 ELECTRIC COMPRESSOR
DTC Logic
INFOID:0000000010122018
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn power switch OFF.
2. Set the vehicle to READY.
3. Operate the automatic air conditioning system.
4. Set the temperature to full cold and wait at least 2 seconds.
5. Select “Self Diagnostic Result” of “HVAC” using CONSULT.
6. Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-306, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010122019
1.
CHECK REFRIGERANT FOR LEAKAGES
Check refrigerant for leakages. Refer to
HA-84, "Check Refrigerant Leakage"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK COOLING FAN OPERATION
1. Set the vehicle to READY.
2. Operate the automatic air conditioning system.
3. Check that the cooling fan is operating.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check cooling fan. Refer to
EVC-367, "Component Function Check"
.
3.
CHECK REFRIGERANT CYCLE
Check refrigerant cycle. Refer to
Is the inspection result normal?
YES
>> Replace electric compressor. Refer to
HA-95, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B2789
COMP OVER LOADED
When a current of 13.5 A or more is input to the
electric compressor.
• Electric compressor
(Discharge pressure increase)
• Cooling fan
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