Nissan Leaf. Manual — part 822
B2630, B2631 SUNLOAD SENSOR
HAC-291
< 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 A/C auto amp. Refer to
HAC-347, "Removal and Installation"
.
NO
>> Repair harness or connector.
7.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-347, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning components.
Sunload sensor
—
Continuity
Connector
Terminal
M74
1
Ground
No
HAC-292
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITHOUT HEAT PUMP)]
B2770, B2773, B2774 PTC HEATER
B2770, B2773, B2774 PTC HEATER
DTC Logic
INFOID:0000000010121996
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 hot 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-292, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010121997
DIAGNOSIS PROCEDURE
1.
REPLACE PTC HEATER
Replace PTC heater. Refer to
HAC-359, "Removal and Installation"
.
>> Inspection End.
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B2770
PTC HEATER CIRCUIT
When PTC heater circuit system malfunction is
detected.
• PTC heater
• High voltage harness or connectors
(PTC heater high voltage circuit is
open or shorted.)
B2773
PTC HEATER CIRCUIT 1
When PTC heater circuit system (PTC 1) mal-
function is detected.
B2774
PTC HEATER CIRCUIT 2
When PTC heater circuit system (PTC 2) mal-
function is detected.
B2771 PTC HEATER
HAC-293
< 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
B2771 PTC HEATER
DTC Logic
INFOID:0000000010121998
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 hot 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-293, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010121999
1.
CHECK BLOWER MOTOR SYSTEM
Check the blower motor system. Refer to
HAC-335, "Component Function Check"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning components.
2.
CHECK AIR MIX DOOR MOTOR SYSTEM
Check the air mix door motor system. Refer to
HAC-320, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> Replace PTC heater. Refer to
HAC-359, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning components.
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B2771
PTC HEATER OVERHEAT
PROTECT
When the PTC heater circuit board internal tem-
perature is 115
°C (239°F) or more.
• PTC heater
• Blower motor system
• Air mix door motor system
HAC-294
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITHOUT HEAT PUMP)]
B2772 PTC HEATER
B2772 PTC HEATER
DTC Logic
INFOID:0000000010122000
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 hot 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-294, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010122001
1.
REPLACE PTC HEATER
Replace PTC heater. Refer to
HAC-359, "Removal and Installation"
.
>> Inspection End.
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
B2772
PTC HEATER VOLTAGE
When the supply voltage input to the PTC heat-
er is the specified voltage value or less.
• PTC heater
• High voltage harness or connectors
(PTC heater high voltage circuit is
open or shorted.)
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