Control Circuit Inspection

Ignition "OFF" & Disconnect Electric parking brake actuator (RH) connector.
Ignition "ON".
Measure voltage between pin No. 1 (motor+) terminal of electric parking brake actuator(RH) harness connector and chassis ground.
Specification: See below

Fig 1: Scantool Display - EPB Motor Control (+)
Courtesy of KIA MOTORS AMERICA, INC.

Max: approx. 7.4V, Min: 0V[duty(-) 33%]
Is the measured value within specifications?
YES
- Go to Next step procedure.
NO
- Repair as necessary and go to "Verification Of Vehicle Repair " procedure.
Disconnect EPB ECU connector.
Measure resistance between pin No. 2 (motor-) terminal of electric parking brake actuator (RH) harness connector and chassis ground.
Specification: ∞Ω
Measure resistance between pin No. 2 (motor-) terminal and pin No. 1 (motor+) terminal of Electric parking brake actuator (RH) harness connector.
Specification: ∞Ω
Is the measured value within specifications?
YES
- Carefully re-do this troubleshooting guide steps.
- If problem still occurs, replace electric parking brake actuator (RH) and then go to "System Inspection" procedure.
NO
- Repair as necessary and go to Verification Of Vehicle Repair procedure below.