Toyota Corolla Cross: System Malfunction Message is Displayed on the Multi-information Display

SYSTEM DESCRIPTION

If an abnormal vehicle speed information is detected by the certification ECU (smart key ECU assembly), a system malfunction message is displayed on the multi-information display.

WIRING DIAGRAM

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 / Start 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.

• The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.

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• Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

  Click here

PROCEDURE

(a) Check for DTCs.

B

GO TO SMART KEY SYSTEM (for Entry Function) (DIAGNOSTIC TROUBLE CODE CHART)

A

(a) Read the Data List according to the display on the GTS.

OK:

The GTS display changes correctly in response to the vehicle condition.

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

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