Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Air Bag Circuit (C147D)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System(for Gasoline Model) / Air Bag Circuit (C147D)

DESCRIPTION

The skid control ECU (brake actuator assembly) receives the secondary collision brake control request signal from the airbag sensor assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C147D

Air Bag Circuit

An abnormal secondary collision brake control request signal is received 3 times or more when communication with the airbag sensor assembly is possible.
  • Airbag sensor assembly
  • Skid control ECU (brake actuator assembly)

CAUTION / NOTICE / HINT

NOTICE:

When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration.

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PROCEDURE

1.

CHECK DTC (AIRBAG SYSTEM)

(a) Check if airbag system DTCs are output.

Body Electrical > SRS Airbag > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B
A

REPLACE BRAKE ACTUATOR ASSEMBLY

B

GO TO DIAGNOSTIC TROUBLE CODE CHART (AIRBAG SYSTEM)

    Open Circuit in ABS Solenoid Relay Circuit (C146E)

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