Toyota Yaris: Introduction / How To Troubleshoot Ecu Controlled Systems

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / General / Introduction / How To Troubleshoot Ecu Controlled Systems

Introduction

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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: Pre-ignition Detected (P137800)


DESCRIPTION If sudden early ignition (pre-ignition) occurs continuously in a short period of time, a DTC is stored. This pre-ignition is a phenomenon inherent in boosted engines. Atomized engine oil and detached deposits (carbon) cause ignition and promote knocking during low-speed, high-output operation...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Interior Light Auto Cut Circuit


DESCRIPTION The main body ECU (multiplex network body ECU) controls operation of the DOME CUT relay in order to supply power to the interior lights. When the battery saving function operates while the interior lights are on, the main body ECU (multiplex network body ECU) opens the DOME CUT relay to turn off the lights...

Categories

Key Suspend Function

If a key is left in the vehicle, the functions of the key left in the vehicle are temporarily suspended to prevent theft of the vehicle.

To restore the functions, press the unlock button on the functions-suspended key in the vehicle.

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