Toyota Yaris: Sfi System / Precaution

NOTICE:

• Before replacing the ECM, refer to Service Bulletin (for Immobiliser System).
• When the ECM is replaced, update the ECU security key.

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• Before using the GTS, read the instruction manual.
• Prevent the GTS cable from being caught on the pedals, shift lever or steering wheel when driving with the GTS connected to the vehicle.
• When driving the vehicle for testing purposes using the GTS, 2 persons are required. One drives the vehicle, and the other operates the GTS.

Sfi System

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Definition Of Terms

DEFINITION OF TERMS Term Definition Monitor Description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and details)...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Backup Boost Converter Circuit

DESCRIPTION A backup boost converter is built into the engine stop and start ECU. The backup boost converter helps maintain the power source voltage when the engine is restarted by stop and start control. This prevents various functions such as the audio and visual system from malfunctioning if the power source voltage drops due to the auxiliary battery voltage dropping when the engine is restarted by stop and start control...

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

INSTALLATION PROCEDURE 1. INSTALL HORN BUTTON ASSEMBLY (a) Check that the ignition switch is off. (b) Check that the cable is disconnected from the negative (-) auxiliary battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system...