Toyota Avalon Service & Repair Manual: Air Bag Circuit (C147D)

DESCRIPTION

The skid control ECU (brake booster with master cylinder assembly) receives the secondary collision brake control request signal from the airbag ECU assembly.

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

MIL

Note

C147D

Air Bag Circuit

451

An abnormal secondary collision brake control request signal is received 2 times or more when communication with the airbag ECU assembly is possible.

  • Airbag ECU assembly
  • Skid control ECU (brake booster with master cylinder assembly)

Does not come on

Secondary collision brake DTC

HINT:

The DTC is cleared when the conditions return to normal.

CAUTION / NOTICE / HINT

NOTICE:

After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".

Click here

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 BOOSTER WITH MASTER CYLINDER ASSEMBLY

B

INSPECT AIRBAG SYSTEM

    Open Circuit in ABS Solenoid Relay Circuit (C146E,C146F)

    Master Reservoir Level Malfunction (C1202)

    See More:

    Toyota Avalon Service & Repair Manual > Charging System: Fail-safe Chart
    FAIL-SAFE CHART If the following DTC is stored, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily. DTC No. Fail-safe Operation Fail-safe Deactivation Condition P161A87 Generator command is fixed. Engine switch is turned on (IG) after condition returns to normal. ...

    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

    © 2021 Copyright www.tavalon.net
    0.0208