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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) (PHEV) >> DTC U1003-00: Lost Communication With TCM (H-CAN) >> Wiring Inspection >> Module Circuit Inspection >> Power Circuit Inspection
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Power Circuit Inspection

  1. Ignition "OFF"
  2. Refer to ENGINE CONTROL MODULE (ECM) and disconnect PCM connector.
  3. Ignition "ON"
  4. Measure voltage between Pin No. 85, 64 (Memory Power) terminal of PCM harness connector and chassis ground.

    Specification  : B+

  5. Is measured value within specification?

    YES 

    NO