Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: NE Signal Circuit (C1224)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System(for Gasoline Model) / NE Signal Circuit (C1224)

DESCRIPTION

The skid control ECU (brake actuator assembly) receives engine speed signals from the ECM via CAN communication.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1224

NE Signal Circuit

The vehicle speed is 6 km/h (4 mph) or more, the +BS terminal voltage is between 9.6 and 16.5 V, and the engine speed signal is more than 12800 rpm for 2.5 seconds or more.
  • CAN communication system
  • ECM

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication system DTCs are output.

Click here

Result

Proceed to

DTCs are not output

A

DTCs are output

B
B

INSPECT CAN COMMUNICATION SYSTEM

A

2.

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

    Engine Control System Malfunction (C1201)

    SA1 Solenoid Circuit (C1225-C1228,C1468,C1469,C146A,C146B)

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