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Home >> Genesis >> 2023 >> Electrified G80 >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Motor Control Unit-Rear Diagnosis >> DTC U129B-00: Lost Communication With Internal Drive Motor Control Module >> DTC Information And Inspection >> DTC Setting Condition
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC Setting Condition

Trouble Shooting Condition Possible Cause
Main Action
  • Monitor the CAN message
  1. Faulty Power Supply to IGU*
  2. Open/Poor Connection in IGU* CAN "High" line
  3. Open/Poor Connection in IGU* CAN "Low" line
Prerequisite Condition
  • Ignition "ON"
  • Auxiliary battery voltage is between 9 to 16V
Threshold Value Case1
  • IGU* CAN message: transmission and reception fault
Case2
  • IGU* CAN message: Not received
Case3
  • IGU* Ready signal not received
Diagnosis Time Case1
  • 500 ms
Case2
  • 100ns
Case3
  • Immediately
Service Lamp
(1) From Ignition "ON" to the next Ignition "ON"
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