Inspection Procedure 3: The electric parking brake is not applied or released when the electric parking brake switch is operated.

OPERATION

• When you pull up the electric parking brake switch with the brake pedal depressed, the parking brake will be applied (locked).
  
• When you turn ON the ignition switch, and press the electric parking brake switch with the brake pedal depressed, the parking brake will be released.
  
• The electric parking brake cannot be applied or released manually when any of the conditions below is satisfied. When you operate the electric parking brake switch with any of the conditions satisfied, the electric parking brake warning lamp and the electric parking brake switch indicator will flash.
  
The system does not apply the parking brake if any of the conditions below is satisfied:

• Power supply to the ECU fails (8 V or less, or 18 V or more)
  
• The system enters the electric motor overheat protection mode.
  
The system does not release the parking brake if any of the conditions below is satisfied:

• Power supply to the ECU fails (8 V or less, or 18 V or more)
  
• Turn the ignition switch to the LOCK (OFF) position.
  
• The selector lever is not at P range with the brake pedal not depressed.
  

COMMENTS ON TROUBLE SYMPTOM

PROBABLE CAUSES

• Malfunction of the electric parking brake switch
  
• Malfunction of the electric parking brake ECU
  

Check the electric parking brake switch (Refer to ).

	Go to Step 2.

	Replace the electric parking brake switch (Refer to ).

	Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction).

	Replace the electric parking brake ECU (Refer to ).