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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSHYUNDAI2014EQUUS SIGNATUREREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSSMART CRUISE CONTROL SYSTEM DIAGNOSISDTC C1623: CAN TIME-OUT STEERING ANGLE SENSORWIRING INSPECTIONC-CAN COMMUNICATION LINE INSPECTION

2014 Hyundai Equus Signature

C-CAN Communication line inspection

2014 Hyundai Equus SignatureSECTION C-CAN Communication line inspection

Check short to battery in CAN communication line
1. Ignition OFF.
2. Connect SCC Module, SAS connector.
3. Ignition ON
4. Measure voltage between C-CAN High terminal of SCC Module connector and chassis ground.
5. Measure voltage between C-CAN Low terminal of SCC Module connector and chassis ground.
  Specification: below 4V
Check short to ground in CAN communication line
1. IG KEY OFF
2. Disconnect SCC Module, SAS connector.
3. Measure resistance between C-CAN High terminal of SCC Module connector and chassis ground.
4. Measure resistance between C-CAN Low terminal of SCC Module connector and chassis ground.
  Specification: Infinity Ω
Check Open in CAN communication line
1. Ignition OFF
2. Disconnect SCC Module, SAS connector.
3. Measure the resistance between CAN-HIGH terminal of SAS harness connector and CAN-HIGH terminal of SCC Module harness connector.
4. Measure the resistance between CAN-LOW terminal of SAS harness connector and CAN-LOW terminal of SCC Module harness connector.
  Specification: below 1Ω
5. Is the measured value within specification?
  YES
  - Check Each Module connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Check open in communication line. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  - Check short to battery in communication line. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  - Check short to ground in communication line. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.