Toyota RAV4 manuals

Toyota RAV4 Service Manual: Brake switch "B" circuit high

Toyota RAV4. Brake switch "b" circuit high


Description

The purpose of this circuit is to prevent the engine from stalling while driving in the lock-up condition when the brakes are suddenly applied.

When the brake pedal is depressed, this switch sends a signal to the ecm. Then the ecm cancels the operation of the lock-up clutch while braking is in progress.

Toyota RAV4. Brake switch "b" circuit high


Monitor description

This dtc indicates that the stop light switch remains on. When the stop light switch remains on during go and stop driving, the ecm interprets this as a fault in the stop light switch. Then the mil illuminates and the ecm stores the dtc. The vehicle must go (30 km/h (18.63 Mph) or more) and stop (less than 3 km/h (1.86 Mph)) 5 times for 2 driving cycles in order for the dtc to be output.

Monitor strategy

Toyota RAV4. Monitor strategy


Typical enabling conditions

Toyota RAV4. Typical enabling conditions


Typical malfunction thresholds

Toyota RAV4. Typical malfunction thresholds


Wiring diagram

Toyota RAV4. Wiring diagram


Inspection procedure

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.

Notice:

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 and turn the tester on.
  5. Enter the following menus: diagnosis / enhanced obd ii / data list.
  6. Follow the instructions on the tester and read the data list.

Toyota RAV4. Inspection procedure


  1. Inspect stop light switch

Toyota RAV4. Inspect stop light switch


  1. Remove the a3 stop light switch.
  2. Measure the resistance of the switch.

Standard resistance




  1. Check wire harness (ecm - battery)

Toyota RAV4. Check wire harness (ecm - battery)


  1. Measure the voltage of the wire harness side connector.

Standard voltage



Replace ecm

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Other materials:

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