Toyota Yaris: Introduction / How To Troubleshoot Ecu Controlled Systems

Introduction

..

General Information

GENERAL INFORMATION A large number of ECU controlled systems are used in this vehicle. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Inspection

INSPECTION PROCEDURE 1. INSPECT AUTO HIGH BEAM SWITCH (a) Check the resistance. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition H47-5 (+B) - H47-2 (E) Auto high beam switch off 10 kΩ or higher H47-5 (+B) - H47-2 (E) Auto high beam switch on Below 1 Ω If the result is not as specified, replace the auto high beam switch...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received (U040181)

DESCRIPTION If the ECM cannot recognize the millimeter wave radar sensor assembly. DTC U040181 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U040181 Invalid Data Received from ECM/PCM "A" Invalid Serial Data Received Approximately 17 seconds or more after the ignition switch is turned to ON, the ECM cannot recognize the millimeter wave radar sensor assembly for approximately 5 seconds or more...