Yes

Step 2

Check the fuse EF17 circuit.

(a)

Check whether there is a short circuit.

(b)

Repair the circuits. Confirm that there are no short circuits.

(c)

Replace with fuses with rated current.

Is the electric seat working correctly?

Yes

System normal

No

Step 3

Check the electrical seat height adjustment switch.

(a)

Operate the electric seat height adjustment switch.

(b)

At the same time, measure voltage between the electric seat
adjustment switch socket M and L with a multimeter.

Test Terminal

Test Conditions

Standard Voltage

M-L

Up

11-14 V

M-L

Down

11-14 V

Is the voltage specified value?

Yes

Go to step 5

No

Step 4

Replace the electric seat adjustment switch.

(a)

Replace the electric seat adjustment switch. Refer to

11.11.8.9

 

Electric Seat Adjustment Switch Replacement

.

Is the electric seat working correctly?

Yes

System normal

No

Step 5

Check the electric seat height adjustment motor.

(a)

Operate the electric seat forward and rearward adjustment
switch.

Note

Do not disconnect the height adjustment motor
harness connector.

(b)

At the same time, measure voltage between the electric seat
height adjustment motor wiring harness connector terminals
No.1 and 2 with a multimeter.

Test Terminal

Test Conditions

Standard Voltage

1-2

Up

11-14 V

Body Electric

Electric Seats

11-409

1-2

Down

11-14 V

Is the voltage specified value?

Yes

Go to step 7

No

Step 6

Replace the electric seat height adjustment motor.

(a)

Replace the electric seat height adjustment motor. Refer to

11.11.8.8

 

Electric Seat Frame Assembly Replacement

.

Is the electric seat working correctly?

Yes

System normal

No

Step 7

Repair the open circuit between the electric seat adjustment switch and the electric seat height adjustment
motor.

(a)

Check the circuit between the electric seat adjustment switch
and height adjustment motor.

(b)

Repair the open circuit.

Confirm the repair completed.

Next

Step 8

System normal.

11-410

Electric Seats

Body Electric

11.11.7.5 Electric Seat Back Can Not Be Adjusted

Schematic:

M

From Battery

Electric 

Seat 

Adjust 

Switch

Electric 

Seat 

Back 

Adjust 

Motor

FE11-6003b

Diagnostic Steps:

Step 1

Check the EF17 fuse.

1413 12 1110

5

1

2

3

4

6

7

8

9

J

L

K

I

G

D

C

B

E

F

A

86

86

30

87

85

86

86

87

87

87

30

30

30

85

85

85

2

2

3

3

5

5

1

1

1

2

5 3

1

2

5 3

86

87

30

1

1

2

5
3

2

5
3

85

EF01

EF21

EF18

EF25

EF20

EF29

EF06

EF02

EF30

EF17

EF17

EF19

EF23

EF22

EF26

EF24

EF08

EF27

EF28

EF05

EF07

EF16

EF04

EF03

EF15

EF12

EF10

EF1

1

EF09

EF13

EF14

EF32

EF31

FE11-6001b

(a)

Check whether the fuse EF17 is blown.

Fuse Rated Current: 30 A

No

Go to step 3

Yes

Step 2

Check the fuse EF17 circuit.

Body Electric

Electric Seats

11-411

(a)

Check whether there is a short circuit.

(b)

Repair the circuits. Confirm that there are no short circuits.

(c)

Replace with fuses with rated current.

Is the electric seat working correctly?

Yes

System normal

No

Step 3

Check the electric seat back adjustment switch.

(a)

Operate the electric seat back adjustment switch.

(b)

At the same time, measure voltage between electric seat
adjustment switch sockets K and J with a multimeter.

Test Terminal

Test Conditions

Standard Voltage

K-J

Forward

11-14 V

K-J

Rearward

11-14 V

Is the voltage specified value?

Yes

Go to step 5

No

Step 4

Replace the electric seat adjustment switches.

(a)

Replace the electric seat adjustment switches. Refer to

11.11.8.9

 

Electric Seat Adjustment Switch Replacement

.

Is the electric seat working correctly?

Yes

System normal

No

Step 5

Check the seat back adjustment motor.

(a)

Operate the electric seat forward and rearward adjustment
switch.

(b)

At the same time, measure voltage between the electric seat
back adjustment motor harness connector terminals No.1
and 2 with a multimeter.

Test Terminal

Test Conditions

Standard Voltage

1-2

Forward

11-14 V

1-2

Rearward

11-14 V

Is the voltage specified value?

Yes

Go to step 7

11-412

Electric Seats

Body Electric