Nissan Leaf. Instruction — part 774
B2630, B2631 SUNLOAD SENSOR
HAC-99
< 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
NO
>> GO TO 2.
2.
CHECK SUNLOAD SENSOR POWER SUPPLY
1. Turn power switch OFF.
2. Disconnect sunload sensor connector.
3. Turn power switch ON.
4. Check voltage between sunload sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 5.
3.
CHECK SUNLOAD SENSOR GROUND CIRCUIT FOR OPEN
1. Turn power switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between sunload sensor harness connector and A/C auto amp harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
REPLACE SUNLOAD SENSOR
1. Replace sunload sensor. Refer to
HAC-191, "Removal and Installation"
2. Perform DTC confirmation procedure. Refer to
.
3. Check DTC.
Is DTC detected?
YES
>> Replace A/C auto amp. Refer to
HAC-187, "Removal and Installation"
.
NO
>> Inspection End.
5.
CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN
1. Turn power switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between sunload sensor harness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR SHORT
Check continuity between sunload sensor harness connector and ground.
+
−
Voltage
(Approx.)
Sunload sensor
Connector
Terminal
M74
1
Ground
5 V
Sunload sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M74
2
M55
30
Yes
Sunload sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M74
1
M55
35
Yes
HAC-100
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITH HEAT PUMP)]
B2630, B2631 SUNLOAD SENSOR
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-187, "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-187, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning components.
Sunload sensor
—
Continuity
Connector
Terminal
M74
1
Ground
No
B2770, B2773, B2774 PTC HEATER
HAC-101
< 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
B2770, B2773, B2774 PTC HEATER
DTC Logic
INFOID:0000000010121809
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-101, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010121810
DIAGNOSIS PROCEDURE
1.
REPLACE PTC HEATER
Replace PTC heater. Refer to
HAC-201, "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.
HAC-102
< DTC/CIRCUIT DIAGNOSIS >
[AUTO A/C (WITH HEAT PUMP)]
B2771 PTC HEATER
B2771 PTC HEATER
DTC Logic
INFOID:0000000010121811
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-102, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010121812
1.
CHECK BLOWER MOTOR SYSTEM
Check the blower motor system. Refer to
HAC-175, "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-110, "Diagnosis Procedure"
Is the inspection result normal?
YES
>> Replace PTC heater. Refer to
HAC-201, "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
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