Toyota Yaris: Seat Heater System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Vehicle Interior / Seat / Seat Heater System / Terminals Of Ecu

TERMINALS OF ECU

CHECK POWER DISTRIBUTION BOX ASSEMBLY

(a) Remove the power distribution box assembly.

Click here

(b) Reconnect the power distribution box assembly connectors.

Standard:

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
4G-1 - Body ground	Power source	Ignition switch off	11 to 14 V
4C-25 - Body ground	Ground	Always	Below 1 Ω
4C-39 - Body ground	Power source output (seat heater LH)	Ignition switch off	Below 1 Ω
4C-39 - Body ground	Power source output (seat heater LH)	Ignition switch ON	11 to 14 V
4C-40 - Body ground	Power source output (seat heater RH)	Ignition switch off	Below 1 Ω
4C-40 - Body ground	Power source output (seat heater RH)	Ignition switch ON	11 to 14 V

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table...

Seat Belt

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Problem Symptoms Table

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Battery Circuit or Ground Circuit Energization Malfunction (B228B00)

DESCRIPTION This DTC is stored when there is a malfunction in the certification ECU (smart key ECU assembly) auxiliary battery power supply circuit or ground circuit. DTC No. Detection Item DTC Detection Condition Trouble Area Note B228B00 Battery Circuit or Ground Circuit Energization Malfunction A malfunction is detected in the certification ECU (smart key ECU assembly) auxiliary battery power supply circuit or ground circuit...