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 MANUALSHYUNDAI2013GENESIS COUPE 2.0T PREMIUMREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALSTARTERBUTTON ENGINE START SYSTEMPDM (POWER DISTRIBUTION MODULE)DTC B1602: CAN ERRORSIGNAL CIRCUIT INSPECTION

2013 Hyundai Genesis Coupe 2.0T Premium

Signal Circuit Inspection

2013 Hyundai Genesis Coupe 2.0T PremiumSECTION Signal Circuit Inspection

Check CAN high circuit
1. IG "ON" & ENG "OFF".
2. Connect scantool and select Scope meter function.
3. Measure signal waveform of PDM CAN High line.
  Specification: Refer to SIGNAL WAVEFORM & DATA
  
  Fig 1: Measuring Signal Waveform Of PDM CAN High Line
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured signal waveform of CAN high circuit normal?
  YES
  - Go to "Check CAN Low circuit " procedure.
  NO
  - Check short to battery/ground in CAN high circuit, and repair or replace as necessary.
    Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check CAN Low circuit
1. IG "ON" & ENG "OFF"
2. Connect scantool and select Scope meter function.
3. Measure signal waveform of PDM CAN Low line.
  Specification: Refer to SIGNAL WAVEFORM & DATA
  
  Fig 2: Measuring Signal Waveform Of PDM CAN Low Line
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured signal waveform of CAN low circuit normal?
  YES
  - Go to next inspection procedure.
  NO
  - Check short to battery/ground in CAN low circuit and repair or replace as necessary, and then 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.