Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
CAN Communication Line Inspection
2015 Kia Optima LimitedSECTION CAN Communication Line Inspection
- Ignition "OFF"
- Disconnect Battery (-) terminal.
- Disconnect HECU and EPB ECU connector.
- Measure resistance between CAN High terminal of HECU harness connector and CAN High terminal of EPB ECU harness connector.
- Measure resistance between CAN Low terminal of HECU harness connector and CAN Low terminal of EPB ECU harness connector.
- Is the measured value within specifications ?
YES
- Go to COMPONENT INSPECTION Procedure.
NO
- Repair open in CAN Communication circuit between HECU and EPB ECU harness connector and then go to VERIFICATION OF VEHICLE REPAIR procedure.
Specification : Approx. below 1 Ω
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.