Inspection Procedure

HINT:

When releasing the parking brake, set the chocks to hold the vehicle for safety.

1. CHECK BRAKE FLUID 

   Check that the brake fluid level is properly. 

   1. NG: ADD BRAKE FLUID 
   2. OK: Go to Next Step. 
2. CHECK DTC FOR ABS 

   Check if other DTCs are recorded (see  FREEZE FRAME DATA OF ABS  ). 

   1. NO: Go to step   3 
   2. YES: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 
3. INSPECT BRAKE WARNING LIGHT 

   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.
      SPECIFIED CONDITION
      
      

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

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

      OK: 

      Turn the BRAKE warning light 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 the terminal EBDW of the skid control ECU.
   3. Turn the ignition switch to the ON position.
   4. Check that the brake warning light.

      OK: 

      Turn the light on or off in accordance with the connection of the terminal GND and EBDW. 

   Fig 1: Inspecting Brake Warning Light

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: Go to step   4 
   2. OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 
4. INSPECT PARKING BRAKE SWITCH ASSY 
   1. Remove the parking brake switch connector.
   2. Measure the resistance according to the value(s) in SPECIFIED CONDITION  .

   Standard: 

   SPECIFIED CONDITION
   
   

   Tester Connection	Switch Condition	Specified Condition
   P3-1 - Ground part	Released	Below 1Ω
   P3-1 - Ground part	Pushed in	10 kΩ or higher

   Fig 2: Inspecting Parking Brake Switch Assy

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE PARKING BRAKE SWITCH ASSY (SEE  OVERHAUL  ) 
   2. OK: Go to Next Step. 
5. CHECK HARNESS OR CONNECTOR (SKID CONTROL ECU - PARKING BRAKE SWITCH) 
   1. Disconnect the skid control ECU connector and the parking brake switch connector.
   2. Measure the resistance according to the value(s) in SPECIFIED CONDITION  .

      Standard: 

      SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      S2-14 (PKB) - P3-1 (PKB)	Below 1Ω

   3. Measure the resistance according to the value(s) in SPECIFIED CONDITION  .

   Standard: 

   SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   S2-14 (PKB) - Body ground	10 kΩ or higher

   Fig 3: Checking Harness Or Connector (Skid Control ECU - Parking Brake Switch)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
   2. OK: Go to Next Step. 
6. INSPECT BRAKE FLUID LEVEL WARNING SWITCH 
   1. Remove the reservoir tank cap and strainer.
   2. Disconnect the brake fluid level warning switch connector.
   3. Measure the resistance according to the value(s) in SPECIFIED CONDITION  .

   Standard: 

   SPECIFIED CONDITION
   
   

   Tester Connection	Switch Condition	Specified Condition
   (B2-1) - (B2-2)	Float UP	10 kΩ or higher
   (B2-1) - (B2-2)	Float DOWN	Below 1Ω

   Fig 4: Inspecting Brake Fluid Level Warning Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE BRAKE FLUID LEVEL WARNING SWITCH 
   2. OK: Go to Next Step. 
7. CHECK HARNESS OR CONNECTOR (BRAKE FLUID LEVEL WARNING SWITCH - COMBINATION METER) 
   1. Disconnect the combination meter connector and the brake fluid level warning switch connector.
   2. Measure the resistance according to the value(s) in SPECIFIED CONDITION  .

      Standard: 

      SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      (C7-16) - (B2-1)	Below 1Ω

   3. Measure the resistance according to the value(s) in SPECIFIED CONDITION  .

   Standard: 

   SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   (C7-16) - Body ground	10 kΩ or higher

   Fig 5: Checking Harness Or Connector (Brake Fluid Level Warning Switch - Combination Meter)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
   2. OK: Go to Next Step. 
8. CHECK HARNESS OR CONNECTOR (SKID CONTROL ECU - COMBINATION METER) 
   1. Disconnect the skid control ECU connector and combination meter connector.
   2. Measure the resistance according to the value(s) in SPECIFIED CONDITION  .

      Standard: 

      SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      S2-12 (EBDW) - C8-3	Below 1Ω

   3. Measure the resistance according to the value(s) in SPECIFIED CONDITION  .

   Standard: 

   SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   S2-12 (EBDW) - Body ground	10 kΩ or higher

   Fig 6: Checking Harness Or Connector (Skid Control ECU - Combination Meter)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
   2. OK: REPLACE COMBINATION METER ASSY (SEE  PROBLEM SYMPTOMS TABLE  )