Nissan Leaf. Manual - part 568

EVC-296

< DTC/CIRCUIT DIAGNOSIS >

P3196, P31A1, P31AE EV SYSTEM CAN COMMUNICATION

With CONSULT

1. Replace PDM (Power Delivery Module). Refer to 

VC-112, "Removal and Installation"

.

2. Perform DTC confirmation procedure again. Refer to 

EVC-295, "DTC Logic"

.

Is DTC P3196, P31A1, or P31AE detected again?

YES

>> Replace VCM. Refer to 

EVC-423, "Removal and Installation"

.

NO

>> INSPECTION END

P3197, P31A2, P31AD EV SYSTEM CAN COMMUNICATION

EVC-297

< DTC/CIRCUIT DIAGNOSIS >

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P3197, P31A2, P31AD EV SYSTEM CAN COMMUNICATION

DTC Logic

INFOID:0000000010120765

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-297, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120766

1.

CHECK SELF-DIAGNOSTIC RESULT IN ELECTRIC SHIFT CONTROL MODULE

With CONSULT

Check self-diagnostic result in “SHIFT”.
Are any DTC detected?

YES

>> Check the DTC. Refer to 

TM-50, "DTC Index"

.

NO

>> GO TO 2.

2.

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 3.

NO

>> Repair or replace error-detected parts.

3.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase DTC.

2. Perform DTC confirmation procedure again. Refer to 

EVC-297, "DTC Logic"

.

Is DTC P3197, P31A2, or P31AD detected again?

YES

>> Replace VCM. Refer to 

EVC-423, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P3197

COMMUNICATION ERROR
(Communication error)

When VCM detects an error signal that is received from electric 
shift control module via CAN communication

• CAN communication
• Electric shift control 

module (built in to VCM)

• VCM

P31A2

P31AD

EVC-298

< DTC/CIRCUIT DIAGNOSIS >

P31AF, P31B3 EV SYSTEM CAN COMMUNICATION

P31AF, P31B3 EV SYSTEM CAN COMMUNICATION

DTC Logic

INFOID:0000000010120767

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-298, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120768

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 P31AF and P31B3 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-298, "DTC Logic"

.

Is DTC P31AF or P31B3 detected again?

YES

>> Replace A/C auto amp. Refer to 

HAC-187, "Removal and Installation"

 (with heat pump), 

HAC-

347, "Removal and Installation"

 (without heat pump).

NO

>> INSPECTION END

4.

REPLACE A/C AUTO AMP.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P31AF

COMMUNICATION ERROR
(Communication error)

When VCM detects an error signal that is received from A/C auto 
amp. via CAN communication

• CAN communication
• A/C auto amp.
• VCM

P31B3

P31AF, P31B3 EV SYSTEM CAN COMMUNICATION

EVC-299

< DTC/CIRCUIT DIAGNOSIS >

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With CONSULT

1. Replace A/C auto amp. Refer to 

HAC-187, "Removal and Installation"

 (with heat pump), 

HAC-347,

"Removal and Installation"

 (without heat pump).

2. Perform DTC confirmation procedure again. Refer to 

EVC-298, "DTC Logic"

.

Is DTC P31AF or P31B3 detected again?

YES

>> Replace VCM. Refer to 

EVC-423, "Removal and Installation"

.

NO

>> INSPECTION END