Nissan Leaf. Manual - part 1190

P0A1B DRIVE MOTOR A CONTROL MODULE

TMS-41

< DTC/CIRCUIT DIAGNOSIS >

D

E

F

G

H

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J

K

L

M

A

B

TMS

N

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DTC/CIRCUIT DIAGNOSIS

P0A1B DRIVE MOTOR A CONTROL MODULE

DTC Logic

INFOID:0000000010120922

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 “P0A1B” detected?

YES

>> Go to 

TMS-41, "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:0000000010120923

1.

REPLACE TRACTION MOTOR INVERTER

Replace the traction motor inverter. Refer to 

TMS-103, "Removal and Installation"

.

>> END

DTC

CONSULT screen terms

(Trouble diagnosis content)

Malfunction detected condition

Possible cause

P0A1B

DRIVE MOTOR A CONTROL MODULE
(Drive Motor “A” Control Module)

A malfunction is detected in the traction 
motor inverter (motor controller)

Traction motor inverter

TMS-42

< DTC/CIRCUIT DIAGNOSIS >

P0A2C DRIVE MOTOR A TEMP SENSOR

P0A2C DRIVE MOTOR A TEMP SENSOR

DTC Logic

INFOID:0000000010120924

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 “P0A2C” detected?

YES

>> Go to 

TMS-42, "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:0000000010120925

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 TEMPERATURE SENSOR CIRCUIT

1. Disconnect the traction motor inverter harness connector.

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

ground.

Is the inspection result normal?

YES

>> GO TO 4.

DTC

CONSULT screen terms

(Trouble diagnosis content)

Malfunction detected condition

Possible causes

P0A2C

DRIVE MOTOR A TEMP SENSOR
(Drive Motor “A” Temperature Sen-
sor Circuit Low)

Traction motor temperature sensor sig-
nal interruption for 2 seconds or more

• Harness or connectors

(Each circuit is open or shorted.)

• Traction motor
• Traction motor Inverter

Traction motor inverter

Ground

Resistance

Connector

Terminal

F13

44

Ground

200 k

Ω or more

45

P0A2C DRIVE MOTOR A TEMP SENSOR

TMS-43

< DTC/CIRCUIT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

TMS

N

O

P

NO

>> Repair or replace damaged parts.

4.

 CHECK TRACTION MOTOR TEMPERATURE SENSOR 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 TEMPERATURE SENSOR

Check the traction motor temperature sensor. Refer to 

TMS-43, "Component Inspection (Traction Motor Tem-

perature Sensor)"

.

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 Temperature Sensor)

INFOID:0000000010120926

1.

 CHECK TRACTION MOTOR TEMPERATURE SENSOR

Check the resistance between traction motor connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the traction motor due to malfunction in the traction motor temperature sensor. Refer to

TMS-109, "Removal and Installation"

.

Traction motor inverter

Traction motor

Resistance

Connector

Terminal

Connector

Terminal

F13

44

F14

4

1 

Ω or less

45

3

Traction motor inverter

Traction motor

Resistance

Connector

Terminal

Connector

Terminal

F13

44

F14

3

100 k

Ω or more

45

4

Traction motor connector

Resistance

Terminal

3

4

Within 

± 50% of temperature characteristics diagram

JPCIA0030GB

TMS-44

< DTC/CIRCUIT DIAGNOSIS >

P0A2D DRIVE MOTOR A TEMP SENSOR

P0A2D DRIVE MOTOR A TEMP SENSOR

DTC Logic

INFOID:0000000010120927

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 “P0A2D” detected?

YES

>> Go to 

TMS-44, "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:0000000010120928

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 TEMPERATURE SENSOR CIRCUIT

1. Disconnect the traction motor inverter harness connector.

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

ground.

Is the inspection result normal?

YES

>> GO TO 4.

DTC

CONSULT screen terms

(Trouble diagnosis content)

Malfunction detected condition

Possible causes

P0A2D

DRIVE MOTOR A TEMP SENSOR
(Drive Motor “A” Temperature Sen-
sor Circuit High)

A maximum value signal from the trac-
tion motor temperature sensor is detect-
ed for 2 seconds or more

• Harness or connectors

(Each circuit is open or shorted.)

• Traction  motor
• Traction motor Inverter

Traction motor inverter

Ground

Resistance

Connector

Terminal

F13

44

Ground

200 k

Ω or more

45