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Home >> Toyota >> 2017 >> Sienna LE, AWD >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Meter / Gauge / Display - Diagnostic Codes & Symptom Tests >> Meter / Gauge System >> Diagnostic Codes >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0151: Lost Communication with Airbag ECU; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U1104: Lost Communication with Driving Support ECU [11/2017 - ] >> Description
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DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0151: Lost Communication with Airbag ECU; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U1104: Lost Communication with Driving Support ECU [11/2017 - ]: Description

The combination meter communicates with the ECM, skid control ECU, power steering ECU, main body ECU (multiplex network body ECU), center airbag sensor assembly and radio and display receiver assembly via the CAN communication system.

DTC No. DTC Detection Condition Trouble Area
U0100 When IG voltage is 9.5 V or more and the following condition is detected:
  • No communication with ECM continues for 2 seconds or more
  • ECM
  • CAN communication system
  • Combination meter assembly
U0129 When IG voltage is 9.5 V or more and the following condition is detected:
  • No communication with skid control ECU continues for 3 seconds or more
  • Brake actuator assembly (skid control ECU)
  • CAN communication system
  • Combination meter assembly
U0131 When IG voltage is 9.5 V or more and the following condition is detected:
  • No communication with power steering ECU continues for 3 seconds or more
  • Steering column assembly (power steering ECU)
  • CAN communication system
  • Combination meter assembly
U0151 When IG voltage is 9.5 V or more and the following condition is detected:
  • No communication with center airbag sensor assembly continues for 10 seconds or more
  • Center airbag sensor assembly
  • CAN communication system
  • Combination meter assembly
U0163 When IG voltage is 9.5 V or more and the following condition is detected:
  • No communication with radio and display receiver assembly continues for 3 seconds or more
  • Radio and display receiver assembly
  • CAN communication system
  • Combination meter assembly
U023A When IG voltage is 9.5 V or more and the following condition is detected:
  • No communication with forward recognition camera continues for 10 seconds or more
  • Forward recognition camera
  • Central gateway ECU (network gateway ECU)
  • CAN communication system
  • Combination meter assembly
U1104 When IG voltage is 9.5 V or more and the following condition is detected:
  • No communication with millimeter wave radar sensor assembly continues for 10 seconds or more
  • Forward recognition camera
  • Central gateway ECU (network gateway ECU)
  • CAN communication system
  • Combination meter assembly