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Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Electronically Controlled Brake System - Diagnostic Codes & Symptom Tests - (Hybrid) >> Electronically Controlled Brake System >> DTC C1438-59: Lost Communication with HV ECU [11/2016 - ] >> Description

DTC C1438-59: Lost Communication with HV ECU [11/2016 - ]: Description

The skid control ECU assembly receives signals from the hybrid vehicle control ECU assembly via CAN communication.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1438-59 Lost Communication with HV ECU 154 When terminal IG2 voltage is 9.5 V or more, the signal that indicates the brake data cannot be received from the hybrid vehicle control ECU assembly for 2 seconds or more.
  • CAN communication line
  • Skid control ECU assembly
Electronically controlled brake system DTC