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Home >> Hyundai >> 2012 >> Genesis 5.0 R-Spec >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel Module (W/O Pic) Diagnosis - 4.6L & 5.0L >> DTC B1640: CAN Time-out MFSW >> W/Harness Inspection >> Inspection/Repair >> MFSW Signal Circuit Inspection

MFSW Signal Circuit Inspection

  1. Check CAN High Line
    1. IG "ON" & ENG "OFF"
    2. After connect GDS, select "Oscilloscope" mode.
    3. Measure the signal waveform on MFSW CAN High line.

      Specification:  Refer to "SIGNAL WAVEFORM "

      Fig 1: Measuring Signal Waveform On MFSW CAN High Line
      G08819474Courtesy of HYUNDAI MOTOR AMERICA
      Fig 2: Identifying IPM Connector Terminals
      G08819475Courtesy of HYUNDAI MOTOR AMERICA
    4. Does the measured signal waveform follow the specification?

      YES 

      • Go to " 2CAN Low Line Inspection" procedure.

      NO 

  2. Check CAN Low Line
    1. IG "ON" & ENG "OFF"
    2. After connect GDS, select "Oscilloscope" mode.
    3. Measure the signal waveform on MFSW CAN Low line.

      Specification:  Refer to "SIGNAL WAVEFORM "

      Fig 3: Measuring Signal Waveform On MFSW CAN Low Line
      G08819476Courtesy of HYUNDAI MOTOR AMERICA
      Fig 4: Identifying IPM Connector Terminals
      G08819477Courtesy of HYUNDAI MOTOR AMERICA
    4. Does the measured signal waveform follow the specification?

      YES 

      NO