Meter / Gauge System

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: U0100; Lost Communication with ECM / PCM "A"; 2013 MY Corolla [07/2012 -]
U0100 - Lost Communication with ECM / PCM "A"

DESCRIPTION

The combination meter communicates with the ECM via the CAN communication line (CAN No. 1 Bus).





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CONFIRM DTC OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the tester on.

(d) Clear the stored DTCs by entering the following menus on the Techstream: Body Electrical / Trouble Codes.

(e) Drive the vehicle at more than 5 km/h (3.1 mph) for at least 60 seconds.

(f) Stop the vehicle.

(g) Check for DTCs Diagnosis System.

Result:





HINT
If the CAN communication system DTC U0100 and another DTC are output at the same time, perform troubleshooting for the CAN communication system DTC U0100 first.

B -- USE SIMULATION METHOD TO CHECK How to Proceed With Troubleshooting

A -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting