Inspection Procedure

1. Clear the DTCs (See PRE-CHECK ).
2. Turn the ignition switch to the ON position.
3. Are the same DTCs recorded? (See PRE-CHECK ).

NO: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

YES: Go to next step 

1. Remove the parking brake switch.
2. Measure the resistance according to the value(s) in the table below.
Fig 1: Inspecting Parking Brake Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard: 

NG: REPLACE PARKING BRAKE SWITCH 

OK: Go to next step 

1. Remove the reservoir tank cap and strainer.
2. Disconnect the brake fluid level warning switch connector B2.
3. Measure the resistance according to the value(s) in the table below.
Fig 2: Inspecting Brake Fluid Level Warning Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard: 

NG: REPLACE BRAKE FLUID LEVEL WARNING SWITCH 

OK: Go to next step 

WHEN USING HAND-HELD TESTER: 

1. Connect the hand-held tester to the DLC3.
2. Start the engine.
3. Select the item "BRAKE WARN LIGHT" in the ACTIVE TEST and operate the BRAKE warning light on the hand-held tester.
   ACTIVE TEST - REFERENCE TABLE
   
   

   Item	Vehicle Condition / Test Details	Diagnostic Note
   ABS WARN LIGHT	Turns ABS warning light ON / OFF	Observe combination meter

4. Check that "ON" and "OFF" of the BRAKE warning light are shown on the combination meter with the hand-held tester.

Standard: 

The BRAKE warning light is turned ON or OFF in accordance with the hand-held tester. 

WHEN NOT USING HAND-HELD TESTER: 

1. Turn the ignition switch off and disconnect the connector from the skid control ECU.
2. Ground terminal EBDW of the skid control ECU.
3. Turn the ignition switch to the ON position.
4. Check that the brake warning light goes off.
Fig 3: Identifying Skid Control ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard: 

The light is turned ON or OFF in accordance with the connection of terminals GND and EBDW. 

NG: REPAIR OR REPLACE COMBINATION METER ASSEMBLY 

OK: Go to next step 

1. Disconnect the skid control ECU connector S1 and the combination meter connector C8.
2. Measure the resistance according to the value(s) in the table below.
   Fig 4: Identifying Skid Control ECU Connector S1 And Combination Meter Connector C8

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   BRAKE ACTUATOR - COMBINATION METER - RESISTANCE TABLE
   
   

   Tester Connection	Specified Condition
   S1-12 (EBDW) - C8-3	Below 1 Ω

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

Standard: 

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE BRAKE ACTUATOR ASSY (See  REPLACEMENT  )