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Circuit Inspection

WARNING: This page is about a different car, the 2017 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: TCM System Circuit
G12331188Courtesy of KIA MOTORS AMERICA, INC.
INSPECTION PART - TCM AND HPCU INSPECTION

Inspection Condition (+) Probe (-) Probe Specification
Channel Connector Terminal Channel Connector Terminal
  1. Ignition "OFF".
  2. Connect all unit/module's connector.
  3. Ignition "ON".
 CH-A HPCU Pin No. 81 (H-CAN High) CH-A Chassis ground - Fig 2
CH-B HPCU Pin No. 82 (H-CAN Low) CH-B Chassis ground -
Fig 2: Screen Display - Normal H-CAN (High & Low) Signal Waveform
G12331189Courtesy of KIA MOTORS AMERICA, INC.
Good 
  • Check if the DTC is erased while removing the H-CAN communication unit/module connector one by one.
  • If the DTC is erased, check for proper operation.
  • If the problem is corrected, replace the unit/module.
  • Go to "VERIFICATION OF REPAIR " procedure.
No Good 
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