Nissan Leaf. Manual - part 1132

 

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Nissan Leaf. Manual - part 1132

 

 

ST-20

< DTC/CIRCUIT DIAGNOSIS >

[WITH HEATED STEERING WHEEL]

HEATED STEERING WHEEL SYSTEM

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace damaged parts.

9.

CHECK HARNESS BETWEEN A/C AUTO AMP. AND HEATED STEERING WHEEL SWITCH

1. Check continuity between A/C auto amp. harness connector terminal and heated steering wheel harness

connector terminal.

2. Check continuity between A/C auto amp. harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace damaged parts.

10.

CHECK HEATED STEERING WHEEL SWITCH

Check heated steering wheel switch. Refer to 

ST-9, "HEATED STEERING WHEEL SYSTEM : Heated Steer-

ing Wheel Switch"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-187, "Removal and Installation"

 (with heat pump) or 

HAC-

347, "Removal and Installation"

 (without heat pump).

NO

>> Replace heated steering wheel switch. Refer to 

ST-46, "Removal and Installation"

.

Component Inspection (Heated Steering Wheel Switch)

INFOID:0000000010119086

1.

CHECK HEATED STEERING WHEEL SWITCH

1. Turn power switch OFF.

2. Remove the heated steering wheel switch. Refer to 

ST-46, "Removal and Installation"

.

3. Check continuity between heated steering wheel switch harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace heated steering wheel switch. Refer to 

ST-46, "Removal and Installation"

.

2.

CHECK HEATED STEERING WHEEL SWITCH INDICATOR LAMP

Apply a voltage of 12V between the heated steering wheel switch connector terminals to check that the indica-

tor lamp turns ON.

CAUTION:

• Connect the fuse between the terminals when applying the voltage.

• To prevent damage, always observe the correct polarity.

Heated steering wheel relay

Ground

Continuity

Connector

Terminal

M7

2

No

A/C auto amp.

Heated steering wheel switch

Continuity

Connector

Terminal

Connector

Terminal

M55

16

M6

1

Yes

A/C auto amp.

Ground

Continuity

Connector

Terminal

M55

16

No

Heated steering wheel switch

Condition

Continuity

Terminal

1

2

While pushing heated steering 

wheel switch

Yes

Other condition

No

HEATED STEERING WHEEL SYSTEM

ST-21

< DTC/CIRCUIT DIAGNOSIS >

[WITH HEATED STEERING WHEEL]

C

D

E

F

H

I

J

K

L

M

A

B

ST

N

O

P

• Prevent short-circuit.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace heated steering wheel switch. Refer to 

ST-46, "Removal and Installation"

.

Component Inspection (Heated Steering Wheel)

INFOID:0000000010119087

1.

CHECK HEATED STEERING WHEEL CONTINUITY

1. Turn power switch OFF.

2. Remove the heated steering wheel. Refer to 

ST-34, "Removal and Installation"

.

3. Check continuity between heated steering wheel harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace heated steering wheel. Refer to 

ST-34, "Removal and Installation"

.

2.

CHECK HEATED STEERING WHEEL RESISTANCE

Check resistance between heated steering wheel connector terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace heated steering wheel. Refer to 

ST-34, "Removal and Installation"

.

Component Inspection (Heated Steering Wheel Relay)

INFOID:0000000010119088

1.

CHECK HEATED STEERING WHEEL RELAY CONTINUITY

Check continuity between heated steering wheel relay terminals.

CAUTION:

• Connect the fuse between the terminals when applying the voltage.

• To prevent damage, always observe the correct polarity.

• Prevent short-circuit.

Is the inspection result normal?

Heated steering wheel switch

Condition

Indicator lamp status

Terminal

+

5

6

Apply 12 V direct current be-

tween terminals 5 and 6. 

ON

Heated steering wheel

Condition

Continuity

Terminal

− 2

Leather surface temperature of 20

°C 

(68

°F) or less

Yes

Leather surface temperature of 30

°C 

(86

°F) or more

No

Heated steering wheel

Condition

Resistance

Terminal

− 2

Leather surface temperature of 20

°C 

(68

°F)

1.7 – 2.17 

Heated steering wheel relay

Condition

Continuity

Terminal

− 5

Apply 12 V direct current between terminals 

1 and 2. 

Yes

Other conditions.

No

ST-22

< DTC/CIRCUIT DIAGNOSIS >

[WITH HEATED STEERING WHEEL]

HEATED STEERING WHEEL SYSTEM

YES

>> Inspection End.

NO

>> Replace heated steering wheel relay. Refer to 

ST-8, "HEATED STEERING WHEEL SYSTEM :

Component Parts Location"

.

HEATED STEERING WHEEL SWITCH INDICATOR LAMP

ST-23

< DTC/CIRCUIT DIAGNOSIS >

[WITH HEATED STEERING WHEEL]

C

D

E

F

H

I

J

K

L

M

A

B

ST

N

O

P

HEATED STEERING WHEEL SWITCH INDICATOR LAMP

Component Function Check

INFOID:0000000010119089

1.

CHECK HEATED STEERING WHEEL INDICATOR LAMP

1. Turn power switch ON.

2. Turn heated steering wheel switch ON.
Does heated steering wheel indicator lamp turn on the lamp?

YES

>> GO TO 2.

NO

>> Go to 

ST-23, "Diagnosis Procedure"

.

2.

CHECK HEATED STEERING WHEEL INDICATOR LAMP

Turn heated steering wheel switch OFF.
Does heated steering wheel indicator lamp turn off the lamp?

YES

>> Inspection End.

NO

>> Go to 

ST-23, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010119090

Regarding Wiring Diagram information. Refer to 

EXL-30, "Wiring Diagram"

.

1.

CHECK POWER SOURCE

1. Turn power switch ON.

2. Turn heated steering wheel switch ON.

3. Check voltage between heated steering wheel switch harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK GROUND CIRCUIT

1. Turn power switch OFF.

2. Disconnect heated steering wheel switch connector. Refer to 

ST-46, "Removal and Installation"

.

3. Check continuity between heated steering wheel switch harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND HEATED STEERING WHEEL

SWITCH

1. Disconnect heated steering wheel relay connector. Refer to 

ST-8, "HEATED STEERING WHEEL SYS-

TEM : Component Parts Location"

.

Heated steering wheel switch

Condition

Voltage (Approx.)

Connector

Terminal

M6

− 6

Within 30 seconds after 

turning ON the heated 

steering switch.

Battery voltage

Other conditions.

0 V

Heated steering wheel switch

Ground

Continuity

Connector

Terminal

M6

6

Yes

 

 

 

 

 

 

 

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