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Home >> Toyota >> 2016 >> Corolla S, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 43 (Continuously Variable Transaxle - Diagnostic Codes (2 Of 3) (Model Code: ZRE172)) >> Continuously Variable Transaxle System >> DTC U0129: Lost Communication with Brake System Control Module [08/2014 - 08/2016] >> Description

DTC U0129: Lost Communication with Brake System Control Module [08/2014 - 08/2016]: Description

WARNING: This page is about a different variant/trim than selected.

The ECM receives signals sent from the skid control ECU via CAN communication. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding ECU or sensor.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
U0129 Lost Communication with Brake System Control Module
  1. Diagnosis Condition
    • The ignition switch is ON.
  2. Malfunction Status
    • There is no communication between the ECM and skid control ECU.
  3. Malfunction Time
    • 2.22 seconds
  4. Other
    • 1-trip detection logic
  • CAN communication system
  • Brake actuator assembly (Skid control ECU)
  • ECM
 Does not come on DTC stored
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