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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 142 (Engine Control System (2AZ-FE)) >> SFI System >> DTC P0724 Brake Switch "B" Circuit High >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Using the intelligent tester's DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time.

NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
  1. Warm up the engine.
  2. Turn the ignition switch OFF.
  3. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
  4. Turn the ignition switch ON.
  5. Turn the intelligent tester ON.
  6. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST.
  7. Follow the instructions on the tester and read the DATA LIST.
DATA LIST

Item Measurement Item/Range (Display) Normal Condition Diagnostic Note
STOP LIGHT SW Stop light switch status/ON or OFF
  • Brake pedal is depressed: ON
  • Brake pedal is released: OFF
 -
  1. INSPECT STOP LIGHT SWITCH 
    1. Remove the A3 stop light switch.
    2. Measure the resistance of the switch.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Switch Condition Specified Condition
    1-2 Pin pushed (pedal released) Below 1 Ω
    1-2 Pin not pushed (pedal depressed) 10 kΩ or higher
    3-4 Pin pushed (pedal released) 10 kΩ or higher
    3-4 Pin not pushed (pedal depressed) Below 1 Ω
    Fig 1: Identifying A3 Stop Light Switch Connector Terminals
    G05183646Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE STOP LIGHT SWITCH 

    OK: GO to next step 

  2. CHECK WIRE HARNESS (ECM - BATTERY) 
    1. Measure the voltage of the wire harness side connector.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A9-36 (STP) - Body ground Brake pedal Is depressed 10 to 14 V
      A9-36 (STP) - Body ground Brake pedal Is released Below 1 V

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 2: Identifying Wire Harness Side Connector Terminals
    G05183647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE ECM 

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