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Home >> Toyota >> 2003 >> Corolla CE, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Abs With EBD System - Diagnostics >> Brake Warning Light Circuit >> Inspection Procedure

Inspection Procedure

  1. INSPECT PARKING BRAKE SWITCH CIRCUIT 
    1. Check for open and short circuit in parking brake switch circuit. (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

    NG: REPAIR OR REPLACE PARKING BRAKE SWITCH CIRCUIT 

    OK: Go to next step 

  2. INSPECT BRAKE FLUID LEVEL WARNING SWITCH CIRCUIT 
    1. Check the brake fluid level in reservoir.
    2. Check for open and shot circuit in brake fluid level warning switch circuit (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

    NG: REPAIR OR REPLACE BRAKE FLUID LEVEL WARNING SWITCH CIRCUIT 

    OK: Go to next step 

  3. CHECK DTC ONCE MORE 
    1. Check for open and short circuit in harness and connector between vacuum warning switch and skid control ECU (See PRE-CHECK  ).

    NG: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

    OK: Go to next step 

  4. INSPECT COMBINATION METER ASSEMBLY (BRAKE WARNING LIGHT CIRCUIT) 
    1. Check for open and short circuit in combination meter (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

    NG: REPAIR OR REPLACE COMBINATION METER ASSEMBLY 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR- COMBINATION METER 
    1. Check for open and short circuit in harness and connector between brake actuator and combination meter (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: CHECK AND REPLACE BRAKE ACTUATOR ASSY 

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