Component Inspection

Brake light switch Check
1. Connect GDS to Data Link Connector. (DLC)
2. IG "ON".
3. Monitor brake switch related parameter in the "Current Data" with GDS while stepping on the pedal in Engine System.
  Specification: Refer to Fig 1)
  
  Fig 1: Brake Lamp Switch Waveform
  Courtesy of KIA MOTORS AMERICA, INC.
4. Does parameter value displayed changes as step on the brake pedal?
  YES
  - Fault might be intermittent caused by poor connection in brake light switch harness and/or HECU's connector. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known-good brake light switch and check for proper operation. If problem is corrected, replace brake light switch and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.