Nissan Leaf. Instruction — part 578
EVC-336
< DTC/CIRCUIT DIAGNOSIS >
P31D8 CHARGING CONNECTOR LOCK RELAY
NO
>> Repair or replace error-detected parts.
P31DB SYSTEM MAIN RELAY +
EVC-337
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
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J
K
L
M
A
B
EVC
N
O
P
P31DB SYSTEM MAIN RELAY +
DTC Logic
INFOID:0000000010120800
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
• Turn power switch OFF and wait at least 90 seconds.
CAUTION:
During this period, never perform vehicle handling such as opening and closing of doors. If some
kind of vehicle handling is performed, then wait another 90 seconds or more from the time of the
vehicle handling.
• Make sure that 12V battery voltage is 11 V or more.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Set the vehicle to READY and wait at least 5 seconds.
2. Check DTC.
Is DTC detected?
YES
>> Proceed to
EVC-337, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010120801
1.
CHECK SYSTEM MAIN RELAY 1 DRIVE CIRCUIT-1
1. Turn power switch OFF.
2. Disconnect Li-ion battery harness connector.
3. Check continuity between Li-ion battery connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check short circuit between Li-ion battery harness and ground.
2.
CHECK SYSTEM MAIN RELAY 1 DRIVE CIRCUIT-2
1. Disconnect VCM harness connector.
2. Check harness for short to ground, between VCM harness connector and Li-ion battery harness connec-
tor.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P31DB
HV BATT MAIN RELAY +
(High voltage battery main
relay +)
System main relay 1 drive circuit remains short to ground for 2.5
seconds or more.
• Harness or connectors
• Li-ion battery J/B
• VCM
+
−
Continuity
Li-ion battery
Terminal
17
Ground
Not existed
EVC-338
< DTC/CIRCUIT DIAGNOSIS >
P31DB SYSTEM MAIN RELAY +
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
NO
>> Repair or replace error-detected parts.
+
−
Continuity
Li-ion battery
Connector
Terminal
B89
17
Ground
Not existed
P31DC SYSTEM MAIN RELAY -
EVC-339
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
EVC
N
O
P
P31DC SYSTEM MAIN RELAY -
DTC Logic
INFOID:0000000010120802
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
• Turn power switch OFF and wait at least 90 seconds.
CAUTION:
During this period, never perform vehicle handling such as opening and closing of doors. If some
kind of vehicle handling is performed, then wait another 90 seconds or more from the time of the
vehicle handling.
• Make sure that 12V battery voltage is 11 V or more.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Set the vehicle to READY and wait at least 5 seconds.
2. Check DTC.
Is DTC detected?
YES
>> Proceed to
EVC-339, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010120803
1.
CHECK SYSTEM MAIN RELAY 2 DRIVE CIRCUIT-1
1. Turn power switch OFF.
2. Disconnect Li-ion battery harness connector.
3. Check continuity between Li-ion battery connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check short circuit between Li-ion battery harness and ground.
2.
CHECK SYSTEM MAIN RELAY 2 DRIVE CIRCUIT-2
1. Disconnect VCM harness connector.
2. Check harness for short to ground, between VCM harness connector and Li-ion battery harness connec-
tor.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P31DC
HV BATT MAIN RELAY
−
(High voltage battery main
relay
−)
System main relay 2 drive circuit remains short to ground for 2.5
seconds or more.
• Harness or connectors
• Li-ion battery J/B
• VCM
+
−
Continuity
Li-ion battery
Terminal
14
Ground
Not existed
+
−
Continuity
Li-ion battery
Connector
Terminal
B89
14
Ground
Not existed
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