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DTC U0100: Lost Communication with ECM/PCM "A": Description

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

DTC Code DTC Detection Condition Trouble Area
U0100 When either of following is conditions detected:
  1. Vehicle speed 5 km/h (3.1 mph) or more and IG voltage 10.5 V or more
  2. No communication with ECM continues for 3 seconds or more (No communication to ECM or skid control ECU continues for 60 seconds or more)
 CAN communication system
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