Nissan Leaf. Manual - part 570
EVC-304
< DTC/CIRCUIT DIAGNOSIS >
P31B6 CAN COMMUNICATION
P31B6 CAN COMMUNICATION
DTC Logic
INFOID:0000000010120773
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. Turn power switch ON and wait at least 10 seconds.
2. Check DTC.
Is DTC detected?
YES
>> Proceed to
EVC-304, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010120774
1.
PERFORM TROUBLE DIAGNOSIS FOR CAN COMMUNICATION
Perform trouble diagnosis for CAN communication. Refer to
LAN-17, "Trouble Diagnosis Flow Chart"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK SELF-DIAGNOSTIC RESULT IN VCM
With CONSULT
Check self-diagnostic result in “EV/HEV”.
Is any CAN error (U1000 excluded) other than DTC P31B6 detected?
YES
>> GO TO 3.
NO
>> GO TO 4.
3.
REPLACE VCM
With CONSULT
1. Replace VCM. Refer to
EVC-423, "Removal and Installation"
.
2. Perform DTC confirmation procedure again. Refer to
Is DTC P31B6 detected again?
YES
>> Replace IPDM E/R. Refer to
PCS-29, "Removal and Installation"
NO
>> INSPECTION END
4.
REPLACE IPDM E/R
With CONSULT
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P31B6
COMMUNICATION ERROR
(Communication error)
When VCM detects an error signal that is received from IPDM E/
R via CAN communication
• CAN communication
• IPDM E/R
• VCM