Toyota Yaris: Millimeter Wave Radar Sensor / Installation

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Engine & Hybrid System / Cruise Control / Millimeter Wave Radar Sensor / Installation

INSTALLATION

PROCEDURE

1. INSTALL MILLIMETER WAVE RADAR SENSOR ASSEMBLY

NOTICE:

If the millimeter wave radar sensor assembly has been struck or dropped, replace the millimeter wave radar sensor assembly with a new one.

(a) Engage the guides to install the millimeter wave radar sensor assembly.

	Bolt
	Screw

(b) Install the 2 bolts and screw in the order shown in the illustration.

Torque:

Bolt :

4.5 N·m {46 kgf·cm, 40 in·lbf}

2. INSTALL FRONT BUMPER ASSEMBLY

Click here

3. UPDATE ECU SECURITY KEY

Click here

4. ADJUST MILLIMETER WAVE RADAR SENSOR

(a) When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.

HINT:

Millimeter wave radar sensor assembly Learning can be performed by using either Triangle Target or Flat Surface Target or Driving Adjustment.

Triangle Target:
Click here
Flat Surface Target:
Click here
Driving Adjustment:
Click here

Removal

REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are replaced during millimeter wave radar sensor assembly removal/installation are shown below...

Before Starting Driving Adjustment

BEFORE STARTING DRIVING ADJUSTMENT CAUTION / NOTICE / HINT HINT: Purpose of millimeter wave radar beam axis learning If the installation position or orientation of the millimeter wave radar sensor is changed due to it being removed and reinstalled or replaced with a new one, or due to the front bumper or radiator grille being replaced, it is necessary for the millimeter wave radar sensor to learn the driving direction of the vehicle in order for each driving support system to operate correctly...

Other information:

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

CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following procedure, the location of the problem can be found quickly and efficiently...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Supply Voltage Circuit Circuit Voltage Out of Range (C123A1C)

DESCRIPTION When a malfunction has occurred in the power source circuit, the AWD ECU assembly stores DTC C123A1C. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory C123A1C Supply Voltage Circuit Circuit Voltage Out of Range At a vehicle speed of 3 km/h (2 mph) or more, the IG1 terminal voltage is less than 9...