Nissan Leaf. Manual - part 1192

P0A2F DRIVE MOTOR A OVER TEMPERATURE

TMS-49

< DTC/CIRCUIT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

TMS

N

O

P

*: The value is at 20

°C (68°F). Calculate the resistance standard value based on actual ambient temperature

at operation based on the below calculation formula.

Calculating formula

• R20=R/[1+ 0.00393 

× (T−20)]

- R20: Resistance value (m

Ω) at 20°C (68°F)

- R: Resistance value (m

Ω) at actual ambient temperature at operation

- T: Actual ambient temperature [

°C (°F)] at operation

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the traction motor due to malfunction in the stator coil. Refer to 

TMS-109, "Removal and

Installation"

.

TMS-50

< DTC/CIRCUIT DIAGNOSIS >

P0A3F DRIVE MOTOR A POSITION SENSOR

P0A3F DRIVE MOTOR A POSITION SENSOR

DTC Logic

INFOID:0000000010120934

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 10 seconds or more.

2. Check DTC.
Is “P0A3F” detected?

YES

>> Go to 

TMS-50, "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:0000000010120935

1.

CHECK TRACTION MOTOR INVERTER HARNESS CONNECTOR

1. Power switch OFF.

2. Check the connection conditions of the traction motor inverter harness connector.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts.

2.

CHECK TRACTION MOTOR HARNESS CONNECTOR

Check the connection conditions of the traction motor harness connector.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK TRACTION MOTOR RESOLVER CIRCUIT

1. Disconnect the traction motor inverter harness connector.

2. Check the resistance between traction motor inverter vehicle side harness connector terminals and

ground.

DTC

CONSULT screen terms

(Trouble diagnosis content)

Malfunction detected condition

Possible cause

P0A3F

DRIVE MOTOR A POSITION SENSOR
(Drive Motor “A” Position Sensor Cir-
cuit)

If there is an abnormality in the trac-
tion motor resolver detection circuit

• Harness or connectors

(Each circuit is open or shorted.)

• Traction  motor
• Traction motor inverter

P0A3F DRIVE MOTOR A POSITION SENSOR

TMS-51

< DTC/CIRCUIT DIAGNOSIS >

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B

TMS

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Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

 CHECK TRACTION MOTOR RESOLVER CIRCUIT

1. Disconnect the traction motor harness connector.

2. Check the resistance between traction motor inverter vehicle side harness connector terminals and trac-

tion motor vehicle side harness connector terminals.

3. Check the harness for short.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

CHECK TRACTION MOTOR RESOLVER

Check the traction motor resolver. Refer to 

TMS-51, "Component Inspection (Traction Motor Resolver)"

.

Is the inspection result normal?

YES

>> Replace the traction motor inverter. Refer to 

TMS-103, "Removal and Installation"

.

NO

>> Replace the traction motor. Refer to 

TMS-109, "Removal and Installation"

.

Component Inspection (Traction Motor Resolver)

INFOID:0000000010120936

1.

CHECK TRACTION MOTOR RESOLVER

1. Disconnect the traction motor connector.

2. Check the resistance between traction motor connector terminals.

Traction motor inverter

Ground

Resistance

Connector

Terminal

F13

17

Ground

100 k

Ω or more

18

19

20

21

27

Traction motor inverter

Traction motor

Resistance

Connector

Terminal

Connector

Terminal

F13

17

F14

6

1 

Ω or less

18

7

19

5

20

1

21

8

27

2

Traction motor inverter

Resistance

Connector

Terminal

F13

17

18

100 k

Ω or more

19

27

20

21

TMS-52

< DTC/CIRCUIT DIAGNOSIS >

P0A3F DRIVE MOTOR A POSITION SENSOR

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the traction motor due to malfunction in the traction motor resolver. Refer to 

TMS-109,

"Removal and Installation"

.

Traction motor connector

Resistance

Terminal

1

8

20 – 35 

Ω

2

5

8 – 15 

Ω

6

7

20 – 35 

Ω