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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 103 (Electronically Controlled Brake System - Diagnostic Codes (C1202-C1300) (Hybrid)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1240: Yaw Rate Sensor discrimination [04/2018 -] >> Description

DTC C1240: Yaw Rate Sensor discrimination [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).

If the identification ID of the yaw rate and acceleration sensor (airbag ECU assembly) is different to that stored in the skid control ECU (brake booster with master cylinder assembly), DTC C1240 is stored.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area MIL Note
C1240 Yaw Rate Sensor discrimination 406 The identification ID sent from the yaw rate sensor is different to that stored in the skid control ECU (brake booster with master cylinder assembly) for 1 second or more.
  • Incorrect yaw rate sensor (airbag ECU assembly) installed
  • Skid control ECU (brake booster with master cylinder assembly)
Comes on
  • INF Code 406: SAE Code C1240
  • VSC DTC