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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Restraints >> Seat Belts >> Pre-Collision System - Diagnostic Codes & Circuit Tests - (Hybrid) >> Pre-Collision System >> DTC C1A41: Brake Request Value Mismatch between ENG / EHV and Driving Support ECU [10/2014 - 10/2015] >> Description

DTC C1A41: Brake Request Value Mismatch between ENG / EHV and Driving Support ECU [10/2014 - 10/2015]: Description

The brake booster with master cylinder assembly (skid control ECU) receives brake control request signals from the power management control ECU and driving support ECU assembly.

When the request signals received from the power management control ECU and driving support ECU assembly are not consistent, the brake booster with master cylinder assembly (skid control ECU) determines that a malfunction has occurred and sends a malfunction signal to the driving support ECU assembly.

If the driving support ECU assembly receives a malfunction signal, DTC C1A41 is stored.

DTC No. DTC Detection Condition Trouble Area
C1A41 While the power switch is on (IG), a brake request signal from the power management control ECU and driving support ECU assembly are inconsistent for 1 second.
  • Electronically controlled brake system
  • Hybrid control system
  • Brake booster with master cylinder assembly (skid control ECU)
  • Power management control ECU
  • Driving support ECU assembly