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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 104 (Electronically Controlled Brake System - Diagnostic Codes (C1415-U0073) & Symptom Tests (Hybrid)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1420: Malfunction in Deceleration Sensor [04/2018 - ] >> Description

DTC C1420: Malfunction in Deceleration Sensor [04/2018 - ]: Description

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The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2).

The skid control ECU (brake booster with master cylinder assembly) receives signals from the yaw rate and acceleration sensor (airbag ECU assembly) via CAN communication.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area MIL Note
C1420 Malfunction in Deceleration Sensor 571 After the difference between GL1 and GL2 is 0.6 G or more with the vehicle stopped, the difference between GL1 and GL2 does not drop below 0.4 G or more for 60 seconds or more.
  • Acceleration sensor (airbag ECU assembly) installed improperly
  • Acceleration sensor (airbag ECU assembly)
Does not come on ABS DTC