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
2011 Hyundai Equus SignatureSECTION CAN Communication line Inspection
- Check CAN communication line
- IG "OFF"
- Disconnect Cluster ECU connector and HECU connector.
- Measure resistance between CAN-High terminal of Cluster ECU harness connector and CAN-High terminal of HECU harness connector.
- Measure resistance between CAN-Low terminal of Cluster ECU harness connector and CAN-Low terminal of HECU harness connector.
Specification: Below approx. 1Ω
- Is the measured value within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair open in the CAN communication line between Cluster ECU and HECU, Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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.