Toyota Yaris: Front Radar Sensor System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Engine & Hybrid System / Cruise Control / Front Radar Sensor System / Terminals Of Ecu

TERMINALS OF ECU

NOTICE:

Turning the ignition switch to ON with connectors disconnected may cause DTCs to be stored. Make sure to clear the DTCs after inspection has been performed.
Do not apply excessive force to the millimeter wave radar sensor assembly connector.

CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY

(a) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
B8-8 (IGB) - B8-1 (SGND)	Power source	Ignition switch ON	10.5 to 16 V
B8-8 (IGB) - B8-1 (SGND)	Power source	Ignition switch off	Below 1 V
B8-1 (SGND) - Body ground	Ground	Always	Below 1 Ω

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...

Diagnosis System

DIAGNOSIS SYSTEM DIAGNOSIS FUNCTION (a) If a malfunction is detected in the millimeter wave radar sensor assembly, the millimeter wave radar sensor assembly stores DTCs without directly informing the driver, and sends malfunction signals to the systems that use the millimeter wave radar sensor assembly...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Starter Signal Circuit

DESCRIPTION While the engine is being cranked, current flows from terminal STAR of the certification ECU (smart key ECU assembly) to the clutch start switch assembly and to terminal STA of the ECM (STA signal). WIRING DIAGRAM Refer to DTC P061512. Click here CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Starter Inrush Current Reduction Relay Circuit

DESCRIPTION The starter inrush current reduction relay prevents the auxiliary battery voltage from becoming dropping excessively while the starter assembly is operating. If the auxiliary battery voltage drops below the threshold, stop and start control will be prohibited...