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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (W/O Central Gateway Ecu) - Diagnostic Codes - (Hybrid) >> CAN COMMUNICATION SYSTEM (w/o Central Gateway ECU) >> DTC U0129: Lost Communication with Brake System Control Module [10/2015 - ] >> Description

DTC U0129: Lost Communication with Brake System Control Module [10/2015 - ]: Description

DTC No. DTC Detection Condition Trouble Area
U0129 No communication from the skid control ECU (brake booster with master cylinder assembly) continues.
  • Skid control ECU (brake booster with master cylinder assembly) branch line or connector
  • Power source circuit of skid control ECU (brake booster with master cylinder assembly)
  • Skid control ECU (brake booster with master cylinder assembly) ground circuit
  • Skid control ECU (brake booster with master cylinder assembly)

HINT: 

This diagnosis procedure is for when DTC U0129 is output only by the hybrid vehicle control ECU assembly (Techstream display: Hybrid Control).