Diagnostic Procedure

ELECTRIC PARKING BRAKE CANNOT BE RELEASED (ELECTRIC PARKING BRAKE) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	VERIFY SYSTEM DTCs Switch the ignition off/main power OFF. Switch the ignition ON (engine off or on)/main power ON (READY off or on) and wait for 10 s or more. Perform a quick check using the M-MDS. (See DTC INSPECTION .) Are any DTCs displayed?	Yes	Repair or replace the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [DSC] .)
1		No	Inspect the rear brake for sticking. Repair or replace the malfunctioning location and perform the repair completion verification 1. (Refer to REAR BRAKE DISC REMOVAL/INSTALLATION in service information.) (Refer to REAR BRAKE CALIPER DISASSEMBLY/ASSEMBLY in service information.)
Repair completion verification 1	VERIFY IF MALFUNCTION CAUSE IS CORRECTED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. Explain repair contents to customer.
Repair completion verification 1		No	Refer to the CAN (controller area network) malfunction diagnosis flow to inspect for a CAN communication error. (See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .) If the CAN communication is normal, perform the diagnosis from Step 1.