Toyota Corolla Cross: Power Source Control System Missing Message (B278C87)

DESCRIPTION

When an internal malfunction is detected in the certification ECU (smart key ECU assembly), this DTC is stored.

CAUTION / NOTICE / HINT

NOTICE:

• When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Smart Key(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
• Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

  for HEV Model: Click here

  for Gasoline Model: Click here

PROCEDURE

(a) Clear the DTCs.

NEXT

(a) Check for DTCs.

A

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

B

USE SIMULATION METHOD TO CHECK

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