Inspection Procedure

HINT:

Start the inspection from step 1 when using Techstream and start from step  2 when not using Techstream.

1. CHECK BRAKE FLUID LEVEL 
   1. Check the amount of brake fluid in the brake reservoir.

      OK: Brake fluid level is correct. 

   NG: ADD BRAKE FLUID 

   OK: Go To Next Step 

2. INSPECT BRAKE WARNING LIGHT 
   1. When using Techstream.
      1. Connect Techstream to the DLC3.
      2. Turn the ignition switch to the ON position.
      3. Turn Techstream ON.
      4. Select the item "Brake Warning Light" in the Active Test and operate the BRAKE warning light on Techstream.

         ABS/VSC/TRAC 

         ABS/VSC/TRAC - ACTIVE TEST
         
         

         Tester Display	Test Part	Control Range	Diagnostic Note
         Brake Warning Light	Turns BRAKE warning light	ON/OFF	Observe combination meter

      5. Check that "ON" and "OFF" of the BRAKE warning light are indicated on the combination meter when using Techstream.

         OK: The BRAKE warning light comes on or goes off according to Techstream operations. 

   2. When not using Techstream:
      1. Disconnect the skid control ECU connector.
      2. Turn the ignition switch to the ON position.
      3. Ground terminal BRL of the skid control ECU.
      4. Check the BRAKE warning light.

         OK 

         WARNING LIGHT SWITCH CONDITION CHART
         
         

         BRL - GND Condition	Illumination Condition
         Connecting	OFF
         Disconnecting	ON

      5. Turn the ignition switch to OFF.
      6. Reconnect the skid control ECU connector.

   OK: REPLACE BRAKE ACTUATOR 

   Fig 1: Identifying Skid Control ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: Go To Next Step 

3. INSPECT PARKING BRAKE SWITCH ASSEMBLY 
   1. Disconnect the parking brake switch connector.
   2. Measure the resistance.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      P6-1 - Body ground	Released	Below 1 Ω
      P6-1 - Body ground	Pushed in	10 kΩ or higher

   3. Reconnect the parking brake switch connector.

   NG: REPLACE PARKING BRAKE SWITCH ASSEMBLY 

   Fig 2: Inspecting Parking Brake Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go To Next Step 

4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - PARKING BRAKE SWITCH) 
   1. Disconnect the skid control ECU connector.
   2. Disconnect the parking brake switch connector.
   3. Measure the resistance.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

      Tester Connection	Specified Condition
      S1-23 (PKB) - P6-1	Below 1 Ω
      S1-23 (PKB) - Body ground	10 kΩ or higher

   4. Reconnect the parking brake switch connector.
   5. Reconnect the skid control ECU connector.

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   Fig 3: Identifying Parking Brake Switch & Skid Control ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go To Next Step 

5. INSPECT BRAKE FLUID LEVEL WARNING SWITCH CIRCUIT 
   1. Disconnect the brake fluid level warning switch connector.
   2. Measure the resistance.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

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

   3. Reconnect the brake fluid level warning switch connector.

   NG: REPLACE BRAKE FLUID RESERVOIR 

   Fig 4: Inspecting Brake Fluid Level Warning Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go To Next Step 

6. CHECK HARNESS AND CONNECTOR (COMBINATION METER - BRAKE FLUID LEVEL WARNING SWITCH) 
   1. Disconnect the combination meter connector.
   2. Disconnect the brake fluid level warning switch connector.
   3. Measure the resistance.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

      Tester Connection	Specified Condition
      C10-11 - B2-1	Below 1 Ω
      C10-11 - Body ground	10 kΩ or higher

   4. Reconnect the brake fluid level warning switch connector.
   5. Reconnect the combination meter connector.

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   Fig 5: Identifying Brake Fluid Level Warning Switch & Combination Meter Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go To Next Step 

7. INSPECT COMBINATION METER ASSEMBLY 
   1. Check the combination meter system. (See COMBINATION METER ).

      OK: Combination meter is normal. 

   NG: REPLACE COMBINATION METER 

   OK: CHECK FOR INTERMITTENT PROBLEMS