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Inspection Procedure 2: When the ignition switch is turned ON, the electric parking brake warning light remains on.
 
 
 
 
OPERATION
  • The electric parking brake ECU informs the combination meter that the electric parking brake warning light illuminates via CAN.
  • When the ignition switch is turned ON, the electric parking brake ECU illuminates the electric parking brake warning light for approximately three seconds as a bulb check.
 
 
COMMENTS ON TROUBLE SYMPTOM
This trouble symptom assumes that scan tool (M.U.T.-IIISE) CAN bus diagnosis result is OK and no DTC is set.
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the electric parking brake ECU
  • Malfunction of the combination meter
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), check the data list.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to Connect the Scan Tool (M.U.T.-IIISE) ."
(2) Check the following data list.
  • Item No.50: EPB warning light
(3) Turn ON the ignition switch, and wait for at least approximately three seconds. "OFF" should be displayed.
Is the check result normal?
Go to Step 2.
Replace the electric parking brake ECU (Refer to ).
 
STEP 2. Retest the system
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the combination meter (Refer to GROUP 54A - Combination Meter ).