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DTC U0129 Lost Communication with Brake System Control Module: Description

The No. 1 meter ECU communicates with the skid control ECU via the CAN line

DTC DETECTION CONDITION CHART

DTC Code DTC Detection Condition Trouble Area
U0129 When either of following conditions is detected
  • 15 seconds have elapsed since engine started and IG voltage 10 5 V or more
  • No communication with skid control ECU continues for 3 seconds or more (No communication with ECM or skid control ECU continues for 60 seconds or more)
 CAN communication system
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