Nissan Leaf. Manual - part 1197

P31A2 CAN ERROR

TMS-69

< DTC/CIRCUIT DIAGNOSIS >

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TMS

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P31A2 CAN ERROR

DTC Logic

INFOID:0000000010120964

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always power switch OFF and wait

at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1. Power switch ON and wait for 5 seconds or more.

2. Check DTC.
Is “P31A2” detected?

YES

>> Go to 

TMS-69, "Diagnosis Procedure"

.

NO-1 >> To check malfunction symptom before repair: Refer to 

GI-53, "Intermittent Incident"

.

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010120965

1.

REPLACE VCM

Replace the VCM due to malfunction in the electric shift control module built in VCM. Refer to 

EVC-423,

"Removal and Installation"

.

>> END

DTC

CONSULT screen terms

(Trouble diagnosis content)

Malfunction detected condition

Possible cause

P31A2

CAN ERROR
(CAN data error)

If traction motor inverter detects CAN data error contin-
uously for 2 seconds or more

VCM (Electric shift control mod-
ule)

TMS-70

< DTC/CIRCUIT DIAGNOSIS >

P31A4 CAN ERROR

P31A4 CAN ERROR

DTC Logic

INFOID:0000000010120966

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always power switch OFF and wait

at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1. Power switch ON and wait for 5 seconds or more.

2. Check DTC.
Is “P31A4” detected?

YES

>> Go to 

TMS-70, "Diagnosis Procedure"

.

NO-1 >> To check malfunction symptom before repair: Refer to 

GI-53, "Intermittent Incident"

.

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010120967

1.

REPLACE VCM

Replace the VCM. Refer to 

EVC-423, "Removal and Installation"

.

>> END

DTC

CONSULT screen terms

(Trouble diagnosis content)

Malfunction detected condition

Possible cause

P31A4

CAN ERROR
(CAN data error)

If traction motor inverter detects CAN data error 

VCM

P31A9 CAN ERROR

TMS-71

< DTC/CIRCUIT DIAGNOSIS >

D

E

F

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H

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J

K

L

M

A

B

TMS

N

O

P

P31A9 CAN ERROR

DTC Logic

INFOID:0000000010120968

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always power switch OFF and wait

at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1. Power switch ON and wait for 5 seconds or more.

2. Check DTC.
Is “P31A9” detected?

YES

>> Go to 

TMS-71, "Diagnosis Procedure"

.

NO-1 >> To check malfunction symptom before repair: Refer to 

GI-53, "Intermittent Incident"

.

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010120969

1.

REPLACE LI-ION BATTERY CONTROLLER

Replace the Li-ion battery controller. Refer to 

EVB-181, "Exploded View"

.

>> END

DTC

CONSULT screen terms

(Trouble diagnosis content)

Malfunction detected condition

Possible cause

P31A9

CAN ERROR
(CAN data error)

If traction motor inverter detects CAN data error con-
tinuously for 2 seconds or more

Li-ion battery controller

TMS-72

< DTC/CIRCUIT DIAGNOSIS >

P31AD CAN ERROR

P31AD CAN ERROR

DTC Logic

INFOID:0000000010120970

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always power switch OFF and wait

at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1. Power switch ON and wait for 5 seconds or more.

2. Check DTC.
Is “P31AD” detected?

YES

>> Go to 

TMS-72, "Diagnosis Procedure"

.

NO-1 >> To check malfunction symptom before repair: Refer to 

GI-53, "Intermittent Incident"

.

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010120971

1.

REPLACE VCM

Replace the VCM due to malfunction in the electric shift control module built in VCM. Refer to 

EVC-423,

"Removal and Installation"

.

>> END

DTC

CONSULT screen terms

(Trouble diagnosis content)

Malfunction detected condition

Possible cause

P31AD

CAN ERROR
(CAN data error)

If traction motor inverter detects CAN data error 
continuously for 2 seconds or more

VCM (Electric shift control module)