[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
36 -PARKING BRAKE > TROUBLESHOOTING<ELECTRIC PARKING BRAKE><ELECTRIC PARKING BRAKE> > DIAGNOSIS CODE PROCEDURES > CODE No. C2253 EPB SW MALFUNCTION
Code No. C2253: EPB SW malfunction
 
 
 
 
OPERATION
  • When you pull up the electric parking brake switch with the brake pedal depressed, the parking brake will be applied.
  • 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.
 
 
DIAGNOSIS CODE SET CONDITIONS
The diagnosis code will be set under any of the following conditions:
  • The ECU detects an open circuit or short to earth in the electric parking brake switch circuit.
  • Input signal from lock switch 1 does not correspond to that from lock switch 2.
  • Input signal from release switch 1 does not correspond to that from release switch 2.
 
 
PROBABLE CAUSES
  • Damaged wiring harness or connector
    • Open or short to earth in the wires between the electric parking brake ECU and the electric parking brake switch, or high resistance in a connector
    • Open in the wires between the electric parking brake switch and body earth, or high resistance in a connector
  • The electric parking brake switch seized or poor contact
  • Malfunction of the electric parking brake ECU
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE data list
Check the following data list (Refer to ).
  • Item No.2: EPB switch:LOCK 1 SW
  • Item No.3: EPB switch:LOCK 2 SW
  • Item No.4: EPB switch:RELEASE 1 SW
  • Item No.5: EPB switch:RELEASE 2 SW
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Go to Step 2.
 
STEP 2. Check the electric parking brake switch.
Refer to .
Is the check result normal?
Go to Step 3.
Replace the electric parking brake switch (Refer to ).
 
STEP 3. Check of short to earth, and open circuit in LCK1, LCK2, REL1 or REL2 line between electric parking brake ECU connector and electric parking brake switch connector
Is the check result normal?
Go to Step 4.
Repair the connector(s) or wiring harness.
 
STEP 4. Measure the resistance at the electric parking brake switch connector.
(1) Check the electric parking brake switch connector.
(2) Disconnect the connector and measure at the wiring harness side.
(3) Measure the resistance between terminal No.1 and body earth.
OK: Continuity exists (2 Ω or less).
Is the check result normal?
Go to Step 5.
The earth circuit may be open. Repair the wiring harness wires or connectors between the electric parking brake switch connector and the body earth.
 
STEP 5. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Turn the ignition switch to the LOCK (OFF) position.
(3) Turn the ignition switch to the ON position.
(4) Check if the diagnosis code is set.
Is diagnosis code No. C2253 set?
Replace the electric parking brake ECU (Refer to ).
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).