Toyota Sequoia (2005). Manual - part 310

F18068

Parking Brake Switch

Release

Push

P2

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–1035

1229

INSPECTION PROCEDURE

HINT:
Start the inspection from step 1 when using the hand–held tester and start from step 2 when not using the
hand–held tester.

1

Check operation of the BRAKE warning light.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch to the ON position and hand–held tester main switch ON.

(c)

Select the ACTIVE TEST mode on the hand–held.

CHECK:
Check that ”ON” and ”OFF” of the BRAKE warning light can be shown on the combination meter with the
hand–held tester.

Item

Vehicle Condition/Test Details

Diagnostic Note

BRAKE WARN LIGHT

Turn BRAKE warning light ON/OFF

Observe combination meter

OK:
BRAKE warning light operates.

NG

Go to step 6.

OK

2

Check parking brake switch assembly.

PREPARATION:
Disconnect the parking brake switch connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Switch Condition

Specified Condition

P2–1 – Ground part

Released

1 

Ω

 or less

P2–1 – Ground part

Pushed in

10 k

Ω

 or more

NG

Replace parking brake switch.

OK

F18069

DI–1036

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1230

3

Check harness and connector between translate ECU and parking brake switch
(See page 

BE–2

).

NG

Repair or replace parking brake switch circuit.

OK

4

Check brake fluid level warning switch.

PREPARATION:
Disconnect the brake fluid level warning switch connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Switch Condition

Specified Condition

(B2–1) – (B2–2)

Float UP

10 k

Ω

 or more

(No continuity)

(B2–1) – (B2–2)

Float DOWN

1 

Ω

 or less (Continuity)

NG

Replace brake fluid level warning switch.

OK

5

Check for open and short circuit in harness and connector between brake fluid
level warning switch and translate ECU (See page 

IN–35

).

NG

Repair or replace harness or connector.

OK

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–1037

1231

6

Check harness and connector between translate ECU and skid control ECU
(CAN1 circuit).

NG

Repair or replace parking brake switch circuit
(CAN1 circuit).

OK

7

Is DTC output?

Check DTC (ABS, VSC, translate ECU and CAN communication system) on page 

DI–911

.

YES

Repair circuit indicated by the output code 
(See page 

DI–921

).

NO

8

Check BRAKE warning light.

See combination meter troubleshooting on page 

DI–1614

.

NG

Repair or replace combination meter
(See page 

DI–1610

).

OK

Check and replace translate ECU.

DI–1038

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1232

BRAKE Warning Light Circuit (Does not light up)

CIRCUIT DESCRIPTION

See page 

DI–1033

.

WIRING DIAGRAM

See page 

DI–1033

.

INSPECTION PROCEDURE

HINT:
Start the inspection from step 1 when using the hand–held tester and start from step 2 when not using the
hand–held tester.

1

Check operation of the BRAKE warning light.

PREPARATION:
(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch to the ON position and hand–held tester main switch ON.

(c)

Select the ACTIVE TEST mode on the hand–held.

CHECK:
Check that ”ON” and ”OFF” of the BRAKE warning light can be shown on the combination meter with the
hand–held tester.

Item

Vehicle Condition/Test Details

Diagnostic Note

BRAKE WARN LIGHT

Turn BRAKE warning light ON/OFF

Observe combination meter

OK:
BRAKE warning light operates.

NG

Go to step 3.

OK

DIDMO–01