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.

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HOMESERVICE MANUALSHYUNDAI2013EQUUS ULTIMATEREPAIR AND DIAGNOSISBODY & FRAMESEATSPOWER SEAT MODULE DIAGNOSISDTC B1602: CAN ERRORW/HARNESS INSPECTIONINSPECTION/REPAIRPSM SIGNAL CIRCUIT INSPECTION

2013 Hyundai Equus Ultimate

PSM Signal Circuit Inspection

2013 Hyundai Equus UltimateSECTION PSM Signal Circuit Inspection

Check CAN High Line.
1. IG "ON" & ENG "OFF".
2. After connect GDS, select "Oscilloscope" mode.
3. Measure the signal waveform on PSM CAN High line.
  Specification : Refer to "SIGNAL WAVEFORM "
  
  Fig 1: Measuring Signal Waveform Between PSM CAN High Line And Ground
  Courtesy of HYUNDAI MOTOR AMERICA

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.