Toyota Yaris: Millimeter Wave Radar Sensor / Driving Adjustment

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Engine & Hybrid System / Cruise Control / Millimeter Wave Radar Sensor / Driving Adjustment

DRIVING ADJUSTMENT

CAUTION / NOTICE / HINT

NOTICE:

Make sure to read Before Starting Driving Adjustment before proceeding with work.
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Make sure to perform the transition to online axis alignment mode with the vehicle stopped.
Transitioning to online axis alignment mode will erase the learning value, so make sure to complete the adjustment.
Turning the ignition switch off while in online axis alignment mode will cause the system to exit online axis alignment mode, so to continue with the adjustment, it is necessary to transition to online axis alignment mode again.
All of the driving support system functions will be inoperative while the adjustment is in progress.
When driving the vehicle with the GTS connected, be careful with how the wires are routed.
If the adjustment does not complete even after driving for 15 minutes or more cumulatively, change to a different driving route.
If the adjustment does not complete even after driving for 30 minutes or more cumulatively, perform adjustment by target recognition.
After adjustment is complete, to start the various systems it is necessary to turn the ignition switch off and then to ON again.
In situations such as when the online axis alignment terminates abnormally, to perform online axis alignment again, turn the ignition switch off and then back to ON and enter online axis alignment mode again.

PROCEDURE

1. PERFORM MILLIMETER WAVE RADAR SENSOR OPTICAL AXIS LEARNING

(a) Adjust the tire pressures to the standard values.

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(b) Clean away any foreign matter adhering to the surface of the radiator grille emblem.

(d) Make sure the surfaces of the radiator grille emblem and millimeter wave radar sensor assembly are clean and have no dirt, snow, or other matter adhering to them.

(e) Check that the front bumper assembly and radiator grille installation areas have no damage or deformation.

(f) Transition to online axis alignment mode

(1) With the ignition switch off, connect the GTS to the DLC3.

(2) Turn the ignition switch to ON.

(3) Enter the following menus: Body Electrical / Front Radar Sensor / Utility / Transition to Online Axis Alignment Mode.

Body Electrical > Front Radar Sensor > Utility

Tester Display
Transition to Online Axis Alignment Mode

(4) Press "Next".

(5) Check the GTS screen and confirm that it has transitioned to online axis alignment mode.

(g) Online axis adjustment (Optical Axis Learning)

(1) Drive the vehicle to perform optical axis learning.

HINT:

If the alignment is performed with the GTS connected to the vehicle, the alignment progress can be monitored through 5 stages on the GTS screen.

(2) If the online axis alignment completes normally, the buzzer will sound intermittently for 2 seconds.

NOTICE:

If the alignment terminates abnormally, the buzzer will sound for 3 seconds continuously.

If an error code is displayed, perform troubleshooting according to the following table, then perform the beam axis alignment again.

Error No.	Error Description	Cause of Error	Action to be Taken
6	Target angle abnormality	SST (reflector) is placed incorrectly. The beam axis of the millimeter wave radar sensor assembly is outside the automatic correction range.	Place SST (reflector) in the correct position. (See page 2. MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b) Place SST (reflector))
			Check the installation condition of the millimeter wave radar sensor assembly.
			Check the fitting accuracy of the front bumper assembly and the radiator grille.
7	Radar abnormality	Operation of the millimeter wave radar sensor assembly is abnormal.	Replace the millimeter wave radar sensor assembly.
8	Radar dirtiness	There is dirt on the surface of the radar sensor cover or millimeter wave radar sensor.	Check the surfaces of the radar sensor cover and millimeter wave radar sensor and clean away contaminants.
9	Temperature abnormality	Ambient temperature of millimeter wave radar sensor is outside operable range.	Wait until temperature returns to the operable range for beam axis alignment (-30 to 50°C)
10	Voltage abnormality	IG power source voltage is outside the operable range of the millimeter wave radar sensor assembly.	Check auxiliary battery voltage. Nominal voltage: DC 12 V, Operable range: DC 8 V to 16 V
11	External communication abnormality	VSC communication abnormality (Abnormality in CAN communication between VSC-ECU and millimeter wave radar sensor assembly)	Check engagement of connectors and condition of wire harness.
12	Radar axis aiming failure upward	The beam axis of the millimeter wave radar sensor assembly is outside the automatic correction range.	Check the condition of the sensor, radiator grill and front bumper assembly.
13	Radar axis aiming failure downward	The beam axis of the millimeter wave radar sensor assembly is outside the automatic correction range.	Check the condition of the sensor, radiator grill and front bumper assembly.
14	Vehicle speed abnormality	The vehicle is not stationary.	Ensure that the vehicle remains stationary.
15	Other	The processing load of the millimeter wave radar sensor assembly is high.	Perform the axis adjustment again.
16	Time out	The vehicle cannot communicate with the GTS correctly. The vehicle moved during beam axis alignment. Malfunction in millimeter wave radar sensor assembly.	Check that the GTS is connected correctly. Perform the alignment with the vehicle stopped. Replace the millimeter wave radar sensor assembly.
18	Vehicle information undefined	Communication malfunction with master ECU (body or ENG/EHV), or information does not match that stored in millimeter wave radar sensor assembly.	Check engagement of connectors. Replace master ECU or millimeter wave radar sensor assembly.

(3) Press "Exit" to exit the Online axis adjustment mode.

(4) Turn the ignition switch off.

(5) Turn the ignition switch to ON and check that the warning light turns off.

(6) Turn the ignition switch off.

(7) Disconnect the GTS from the DLC3.

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...

Target Adjustment(triangle Target)

TARGET ADJUSTMENT(TRIANGLE TARGET) PROCEDURE 1. PREPARATION FOR MILLIMETER WAVE RADAR SENSOR ASSEMBLY ADJUSTMENT (a) Park the vehicle on a level surface where the area in front of the vehicle shown in the illustration is free of metal objects...

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