ELECTRIC PARKING BRAKE CANNOT BE RELEASED [ELECTRIC PARKING BRAKE]

id040328250800

Note

• If it is necessary to move the vehicle as in an emergency, perform the electric parking brake forced release. (See ELECTRIC PARKING BRAKE FORCED RELEASE PROCEDURE.)

• If there is any vehicle malfunction complaint lodged by a customer, perform FOREWORD [ELECTRIC PARKING BRAKE] malfunction diagnosis according to the troubleshooting procedure. (See FOREWORD [ELECTRIC PARKING BRAKE].)

Description

• The electric parking brake cannot be released even though the electric parking brake release operation has been performed.

Possible Cause

• Electric parking brake operation malfunction (if there is a malfunction in electric parking brake, electric parking brake control module detects DTC)

• Rear brake sticking (rear disc plate is retained even though electric parking brake motor gear unit operates release)

System Wiring Diagram

• Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY ALL SYSTEM DTCs • Switch the ignition OFF. • Switch the ignition ON (engine off or on) and wait for 10 s or more. • Perform a CMDTC self-test using the M-MDS. (See DTC INSPECTION [ELECTRIC PARKING BRAKE].) • Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [ELECTRIC PARKING BRAKE].)
1		No	Inspect the rear braking for sticking and repair or replace the malfunctioning location. (See REAR BRAKE (DISC) REMOVAL/INSTALLATION.) (See CALIPER (REAR) DISASSEMBLY/ASSEMBLY.)