Toyota Avalon Service & Repair Manual: Engine Control System Malfunction (C1201)

DESCRIPTION

If a malfunction in the SFI system is detected, the operation of VSC and TRAC is prohibited by the fail-safe function. When the signals from the engine are received normally, fail-safe control is canceled.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1201

Engine Control System Malfunction

Engine control system malfunction signal continues for 2.5 seconds.

SFI system

PROCEDURE

1.

CHECK SFI SYSTEM

(a) Check if SFI system DTCs are output.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B

A

REPLACE ECM

B

INSPECT SFI SYSTEM

    Air Bag Circuit (C147D)

    NE Signal Circuit (C1224)

    See More:

    Toyota Avalon Service & Repair Manual > Automatic Transaxle Fluid: Adjustment
    ADJUSTMENT CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during automatic transaxle fluid replacement are shown below. Necessary Procedures After Parts Removed/Insta ...

    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

    © 2022 Copyright www.tavalon.net
    0.0107