11.11.7 Diagnostic Information and Procedures
11.11.7.1 Diagnosis Description

Refer to 

11.11.2.1

 

Description and Operation

get familiar with the system functions and operation before start system diagnostics,

so that it will help to determine the correct diagnostic steps, more importantly, it will also help to determine whether the customer
described situation is normal.

11.11.7.2 Visual Inspection

–

Check the installed after market equipment that may affect the seats operations.

–

Check the easy to access system components to identify whether there is a significant damage or a potential malfunction.

–

If electric seats are inoperative, check and repair the power supply or ground circuit poor connection, or open circuit before carry
out the diagnostics.

11.11.7.3 Electric Seat Can Not Be Adjusted Forward and Rearward

Schematic:

F

1

2

M

From Battery

Electric 

Seat 

Adjust 

Switch

Electric 

Seat 

Forward/

Rearward 

Adjust 

Motor

FE11-6000b

Diagnostic Steps:

Step 1

Check the fuse EF17.

Body Electric

Electric Seats

11-405

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)

Whether the fuse EF17 is blown.

Fuse Rating: 30 A

No

Go to step 3

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 electric seat forward and rearward adjustment switch.

(a)

Operate the electric seat forward and rearward adjustment
switch.

(b)

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

Test Terminal

Test Conditions

Standard Voltage

P-E

Forward

11-14 V

P-E

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

11-406

Electric Seats

Body Electric

No

Step 5

Check the electric seat forward and rearward adjustment motor.

(a)

Operate the electric seat forward and rearward adjustment
switch.

Note

Do not disconnect the electric seat forward and
rearward adjustment motor wiring harness connector.

(b)

At the same time, measure the electric seat forward and
rearward adjustment motor wiring harness connector
terminal No.1 and 2 voltage 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

No

Step 6

Replace the electric seat forward and rearward adjustment motor.

(a)

Replace the electric seat forward and rearward 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  forward  and
rearward motor.

(a)

Check the circuit between the electric seat adjustment switch
and the electric seat forward and rearward motor.

(b)

Repair the open circuit.

Confirm the repair completed.

Next

Step 8

System normal.

Body Electric

Electric Seats

11-407

11.11.7.4 Electric Seat Height Can Not Be Adjusted

Schematic:

M

From Battery

Electric 

Seat 

Adjust 

Switch

Electric 

Seat 

Height 

Adjust 

Motor

FE11-6002b

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)

Whether the fuse EF17 is blown.

Check the Fuse Rated Current: 30 A

No

Go to step 3

11-408

Electric Seats

Body Electric