Nissan Leaf. Manual - part 566

EVC-288

< DTC/CIRCUIT DIAGNOSIS >

P3191, P319C, P31A7 EV SYSTEM CAN COMMUNICATION

With CONSULT

1. Replace traction motor inverter. Refer to 

TMS-103, "Removal and Installation"

.

2. Perform DTC confirmation procedure again. Refer to 

EVC-287, "DTC Logic"

.

Is DTC P3191, P319C, or P31A7 detected again?

YES

>> Replace VCM. Refer to 

EVC-423, "Removal and Installation"

.

NO

>> INSPECTION END

P3193, P319E, P31A9 EV SYSTEM CAN COMMUNICATION

EVC-289

< DTC/CIRCUIT DIAGNOSIS >

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P3193, P319E, P31A9 EV SYSTEM CAN COMMUNICATION

DTC Logic

INFOID:0000000010120757

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-289, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120758

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 EV system CAN error (U1000 excluded) other than DTC P3193, P319E, and P31A9 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 

EVC-289, "DTC Logic"

.

Is DTC P3193, P319E, or P31A9 detected again?

YES

>> Replace LBC. Refer to 

EVB-201, "LI-ION BATTERY CONTROLLER : Exploded View"

.

NO

>> INSPECTION END

4.

REPLACE LBC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P3193

COMMUNICATION ERROR
(Communication error)

When VCM detects an error signal that is received from LBC via 
CAN communication

• CAN communication
• LBC
• VCM

P319E

P31A9

EVC-290

< DTC/CIRCUIT DIAGNOSIS >

P3193, P319E, P31A9 EV SYSTEM CAN COMMUNICATION

With CONSULT

1. Replace LBC. Refer to 

EVB-201, "LI-ION BATTERY CONTROLLER : Removal and Installation"

.

2. Perform DTC confirmation procedure again. Refer to 

EVC-289, "DTC Logic"

.

Is DTC P3193, P319E, or P31A9 detected again?

YES

>> Replace VCM. Refer to 

EVC-423, "Removal and Installation"

.

NO

>> INSPECTION END

P3194, P319F, P31AA CAN COMMUNICATION

EVC-291

< DTC/CIRCUIT DIAGNOSIS >

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P3194, P319F, P31AA CAN COMMUNICATION

DTC Logic

INFOID:0000000010120759

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-291, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120760

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 P3194, P319F, and P31AA 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 

EVC-291, "DTC Logic"

.

Is DTC P3194, P319F, or P31AA detected again?

YES

>> Replace ABS actuator and electric unit (control unit). Refer to 

BRC-162, "Removal and Installa-

tion"

.

NO

>> INSPECTION END

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P3194

COMMUNICATION ERROR
(Communication error)

When VCM detects an error signal that is received from ABS 
actuator and electric unit (control unit) via CAN communication

• CAN communication
• ABS actuator and elec-

tric unit (control unit)

• VCM

P319F

P31AA