Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replacing the master cylinder solenoid, perform zero point CALIBRATION .

Check brake fluid level.
CHECK:

Check the amount of fluid in the brake reservoir.

OK:

Brake fluid level is proper.
1. NG: Check and repair brake fluid leakage and add fluid.
2. OK: Go to next step.

Check brake fluid level warning switch.

PREPARATION:

Disconnect the brake fluid level warning switch connector B2.

CHECK:

Measure the resistance according to the value(s) in the table below.

OK:

BRAKE FLUID LEVEL WARNING SWITCH CONNECTOR RESISTANCE SPECIFICATIONS

Tester Connection	Condition	Specified Condition
B2-1 - B2-2	Float UP (Level warning switch OFF)	10 kΩ or higher (No Continuity)
B2-1 - B2-2	Float DOWN (Level warning switch ON)	Below 1 Ω (Continuity)

Fig 1: Identifying Brake Fluid Level Warning Switch Connector B2

HINT:

A float is placed inside the reservoir. Its position can be changed by increasing/decreasing the level of brake fluid.
The warning switch is switched ON/OFF at +/- 5 mm from the MIN level.

NG: Replace brake fluid reservoir.
HINT:

After the step 2, adjust the brake fluid level to the maximum level.
OK: Go to next step.

Check harness and connector between brake fluid level warning switch and master cylinder solenoid (skid control ECU), brake fluid level warning switch and body ground.
1. NG: Repair or replace harness or connector.
2. OK: Go to next step.
Reconfirm DTC (See DTC CHECK / CLEAR ).
PREPARATION:

Clear the DTCs.

CHECK:

Check if the same DTCs are detected.

RESULT:
DTC OUTPUT RESULT

DTC is output A

DTC is not output B
1. B: END.
2. A: Replace master cylinder solenoid (See DISASSEMBLY ).

DTC is output	A
DTC is not output	B