Schematic:

Brake Lamp Switch

Left Brake Lamp

Right Brake Lamp

High Mounted Brake Lamp

FE11-5338b

Diagnostic Steps:

Step 1

Check brake lamp bulb.

(a)

Remove the brake lamp bulb.

Is the the bulb filament blown?

No

Go to step 3

Yes

Step 2

Replace the brake lamp bulb.

(a)

Replace the faulty brake lamp bulb.

Confirm brake lamps are working properly.

Yes

System normal

No

Step 3

Check the fuse IF20.

Body Electric

Lighting System

11-101

IF14

IF2

IF1

IF5

IF7

IF3

IF16

IF27

IF25

IF26

IF28

IF30

IF24

IF20

IF19

IF23

IF18

IF21

IF13

IF12

IF15

IF9

IF10

IF8

F17

F22

M

FE11-5339b

(a)

Check whether the fuse IF20 is blown.
Fuse Rating: 10 A

Is the fuse blown?

No

Go to step 5

Yes

Step 4

Check the fuse IF20 circuit.

(a)

Check the fuse IF20 circuit malfunction.

(b)

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

(c)

Replace with fuses with rated current.

Confirm brake lamps are working correctly.

Yes

System normal

No

Step 5

Check the brake lamp switch wiring harness connector DR07 terminal No.1 voltage.

2 1

Brake Lamp Harness Connector DR07

FE11-5340b

(a)

Measure brake lamp switch harness connector DR07
terminal No.1 voltage with a multimeter.
Standard Voltage: 11-14 V

Is the voltage specified value?

Yes

Go to step 7

No

Step 6

Repair the open circuit between the brake lamp switch wiring harness connector DR07 terminal No.1 and
the fuse IF20.

(a)

Confirm the open circuit between the brake lamp switch
wiring harness connector DR07 terminal No.1 and the fuse
IF20 repair is completed.

Confirm brake lamps are working correctly.

11-102

Lighting System

Body Electric

Yes

System normal

No

Step 7

Check the brake switch.

(a)

Disconnect the brake lamp switch wiring harness connector,
press the brake pedal. Measure resistance between the
brake switch connector terminals No.1 and No.2 with a
multimeter.
Standard Resistance: Less than 1 Ω

Is the resistance specified value?

Yes

No

Step 8

Replace the brake lamp switch.

(a)

Replace the brake lamp switch. Refer to 

11.4.8.17

 

Brake

Lamp Switch Replacement

.

Confirm brake lamps are working correctly.

Yes

System normal

No

Step 9

Test  continuity  between  the  brake  lamp  switch  wiring  harness  connector  DR07  and  tail  lamp  harness
connector SO41 (SO33).

2 1

Brake Lamp Harness Connector DR07

FE11-5341b

(a)

Confirm continuity between the brake lamp switch wiring
harness connector DR07 terminal No.2 and tail lamp harness
connector SO41/37 Terminal No.6 (SO33 terminal No.2).

Confirm brake lamps are work properly.

Yes

System normal

Body Electric

Lighting System

11-103

1

2

6

5

4

3

1 2

High Mounted Brake Lamp Harness 
Connector SO33

Tail Lamp Harness Connector SO41/SO37

FE11-5342b

No

Step 10

Repair the open circuit between the tail lamp wiring harness connector SO41 (SO33) and the body ground.

1

2

6

5

4

3

1 2

High Mounted Brake Lamp Harness 
Connector SO33

Tail Lamp Harness Connector SO41/SO37

FE11-5343b

(a)

Confirm the open circuit between the tail lamp wiring harness
connector SO41 (SO33) and the body ground repair is
completed.

Confirm the repair completed.

Next

Step 11

System normal.

11-104

Lighting System

Body Electric