CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT; 2018 - 2020 MY Sienna [11/2017

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM1000000018HXI
Model Year Start: 2018	Model: Sienna	Prod Date Range: [11/2017 - ]
Title: CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT; 2018 - 2020 MY Sienna [11/2017 - ]

ADJUSTMENT

CAUTION / NOTICE / HINT

CAUTION:

Radiofrequency radiation exposure information:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be kept with minimum distance of 20 cm (7.87 in.) between the radiator (antenna) and your body at all times during adjustment.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

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.

*a	5 m (16.4 ft.)
*b	6 m (19.7 ft.)
*c	4 m (13.1 ft.)
*d	2 m (6.56 ft.)
	Do not place any metal objects in this area
	Do not place metal objects with a height of more than 50 mm (1.97 in.) in this area

HINT:

Metal objects with a height of 50 mm (1.97 in.) or less placed within the area shown in the illustration will not affect the adjustment.

(b) Check the levelness of the ground.

(1) Check the levelness of the ground at the 3 points shown in the illustration.

*a	3 m (9.84 ft.)
	Levelness Check Point

(2) Place the level on each levelness check point and check that the air bubble of the level is centered.

Click here

(d) Clean the front emblem or millimeter wave radar sensor assembly.

(e) Visually inspect the front of the vehicle.

HINT:

Confirm that there is no damage or deformation.

(f) Visually inspect the front bumper cover, radiator grille sub-assembly and stays.

HINT:

Confirm that there is no damage or deformation.

2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY

(a) Adjust SST (reflector) height.

(1) Adjust SST (reflector) so that the center of SST (reflector) is the same height as the millimeter wave radar sensor assembly.

HINT:

Make sure to align the center of SST (reflector) with the millimeter wave radar sensor assembly (the center of the emblem).

Reference Value:

734 mm (2.41 ft.)

SST: 09870-60000

09870-60010

SST: 09870-60040

*a	SST (reflector)

(b) Place SST (reflector).

(1) Hang a weight with a pointed tip from the center of the rear emblem, and mark the rear center point of the vehicle (point A) on the ground.

*a	String	*b	Weight
*c	Center	*d	Bilateral Symmetry

HINT:

Lightly flick the string with your fingers several times to confirm that the string is perpendicular to the ground.

(2) Hang a weight with a pointed tip from the center of the front emblem, and mark the front center point of the vehicle (point B) on the ground (placement position).

*a	String	*b	Weight
*c	Center	*d	Bilateral Symmetry

HINT:

Lightly flick the string with your fingers several times to confirm that the string is perpendicular to the ground.

(3) Using tape and a string, create a line that connects point B to point A and extends at least 3000 mm (9.84 ft.) beyond the front center point of the vehicle.

*a	String	*b	Tape
*c	3000 mm (9.84 ft.)	-	-

HINT:

Make sure the string is taut when securing it with tape.
Lightly flick the string with your fingers several times to confirm that the string is aligned with point B.

(4) Mark point C (SST (reflector) placement position) at a position 3000 mm (9.84 ft.) from point B.

(5) Place SST (reflector) at point C.

NOTICE:

Ensure that nobody enters the adjustment area during the adjustment.
Do not turn off the Techstream or ignition switch.
Do not move or shake the vehicle during adjustment (do not get in or out of the vehicle).
During the procedure, do not enter the adjustment area.
Close all of the doors.

(1) Connect the Techstream to the DLC3.

(2) Turn the ignition switch to ON.

(3) Turn the Techstream on and turn the cruise control system on using the cruise control main switch (ON/OFF button).

(4) Enter the following menus: Body Electrical / Pre-Collision 2 / Utility / Front Beam Axis Adjustment.

(5) According to the display on the Techstream, press "Next".

(6) Perform the adjustment according to the display on the Techstream.

NOTICE:

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

Error No.	Error Description	Cause of Error	Action to be Taken
1	No target abnormality	SST (reflector) is placed incorrectly. The front emblem or millimeter wave radar sensor assembly is covered by dirt or snow.	Place SST (reflector) in the correct position. (See page 2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b) Place SST (reflector))
			Clean the front emblem or millimeter wave radar sensor assembly.
			Check the installation condition of the front bumper assembly and radiator grill.
2	Target distance abnormality	SST (reflector) is placed incorrectly.	Place SST (reflector) in the correct position. (See page 2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b) Place SST (reflector))
3	Plural targets abnormality	There is a reflective object near SST (reflector). A person entered the adjustment area.	Remove any reflective objects.
3	Plural targets abnormality		Ensure that nobody enters the adjustment area during the adjustment. (See page 1. PREPARATION FOR MILLIMETER WAVE RADAR SENSOR ASSEMBLY ADJUSTMENT)
4	Target move abnormality	SST (reflector) was moved out of position or shaking during the adjustment due to wind. A person entered the adjustment area.	Place SST (reflector) in the correct position. (See page 2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b)Place SST (reflector))
			Perform adjustment in an area with no wind.
			Ensure that nobody enters the adjustment area during the adjustment. (See page 1. PREPARATION FOR MILLIMETER WAVE RADAR SENSOR ASSEMBLY ADJUSTMENT)
5	Motor stop	Operation of the millimeter wave radar sensor assembly (motor) is abnormal.	Turn the ignition switch off then on (IG). (See page 2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (c)Front Beam Axis Adjustment)
5	Motor stop		Check for DTCs.
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. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (b)Place SST (reflector))
6	Target angle abnormality		Check the condition of the sensor, radiator grill and front bumper assembly.
7	Radar abnormality	Operation of the millimeter wave radar sensor assembly is abnormal.	Check for DTCs.
8	Radar dirtiness	There is dirt on the front emblem or millimeter wave radar sensor assembly.	Clean the front emblem or millimeter wave radar sensor assembly.
9	Temperature abnormality	The temperature around the millimeter wave radar sensor assembly is too high.	Wait until the temperature drops to the operable range (-30 to 50°C).
10	Voltage abnormality	IG power source voltage is outside the operable range of the millimeter wave radar sensor assembly.	Check the battery voltage (specified condition: 10 to 16 V).
11	External communication abnormality	CAN communication between DSS and the millimeter wave radar sensor assembly is abnormal.	Check the condition of the connectors.
12	Radar axis aiming failure upward	The beam axis of the millimeter wave radar sensor assembly is outside the automatic correction range (upward).	Check the installation condition of the front bumper assembly and radiator grill.
12	Radar axis aiming failure upward		Manually change the beam axis. (See page 3. MANUALLY CHANGE BEAM AXIS OF MILLIMETER WAVE RADAR SENSOR ASSEMBLY)
13	Radar axis aiming failure downward	The beam axis of the millimeter wave radar sensor assembly is outside the automatic correction range (downward).	Check the installation condition of the front bumper assembly and radiator grill.
13	Radar axis aiming failure downward		Manually change the beam axis. (See page 3. MANUALLY CHANGE BEAM AXIS OF MILLIMETER WAVE RADAR SENSOR ASSEMBLY)
14	Vehicle speed abnormality	The vehicle is not stationary.	Ensure that the vehicle remains stationary.
15	Other	A mode change error occurred. Operation of the yaw rate sensor is abnormal. The vehicle is shaking.	Perform adjustment again. (See page 2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (c) Front Beam Axis Adjustment)
			Check for DTCs.
			Ensure that the vehicle remains stationary.
16	Time out	The vehicle cannot communicate with Techstream normally. The vehicle does not keep still during beam axis adjustment. Operation of the millimeter wave radar sensor assembly is abnormal.	Ensure that the vehicle is connected with the Techstream correctly. Ensure that the vehicle remains stationary. Perform beam axis adjustment again and replace the millimeter wave radar sensor assembly if the same error code is output.

(7) Press the "Exit" button to finish front beam axis adjustment.

(d) Front Beam Axis Misalignment Reading:

NOTICE:

Ensure that nobody enters the adjustment area during the adjustment.
Do not turn off the Techstream or ignition switch.
Do not move or shake the vehicle during adjustment (do not get in or out of the vehicle).
During the procedure, do not enter the adjustment area.
Close all of the doors.

(1) Enter the following menus: Body Electrical / Pre-Collision 2 / Utility / Front Beam Axis Misalignment Reading.

(2) According to the display on the Techstream, press "Next".

(3) Perform the adjustment according to the display on the Techstream.

Specified Condition:

Vertical	-0.5 to 0.5 deg
Horizontal	-0.6 to 0.6 deg

NOTICE:

If the result is not as specified, perform beam axis adjustment again.

(e) Front Beam Axis Offset Reading:

(1) Enter the following menus: Body Electrical / Pre-Collision 2 / Utility / Front Beam Axis Offset Reading.

(2) According to the display on the Techstream, press "Next".

(3) Perform the adjustment according to the display on the Techstream.

Specified Condition:

Vertical learning value	0 deg
Horizontal learning value	0 deg

NOTICE:

If the result is not as specified, perform beam axis adjustment again.

(4) Turn the ignition switch off.

(5) Disconnect the Techstream from the DLC3.

3. MANUALLY CHANGE BEAM AXIS OF MILLIMETER WAVE RADAR SENSOR ASSEMBLY

NOTICE:

Manually change the beam axis when error code 1 (no target abnormality), 2 (target distance abnormality), 3 (plural targets abnormality), 12 (radar axis aiming failure upward) or 13 (radar axis aiming failure downward) is displayed.
If the beam axis change mechanism is in the most upward or downward position, check for DTCs.
If no DTCs are output, repair or correctly install the radiator grille sub-assembly.

HINT:

The millimeter wave radar sensor assembly is installed to the front bumper assembly. If the front bumper is misaligned, the beam axis will be misaligned. Therefore, if the front bumper assembly is deformed or damaged, unless the front bumper assembly is replaced, Front Beam Axis Adjustment may not be able to be completed, even if the millimeter wave radar sensor assembly is replaced or its beam axis is adjusted manually.

(a) Turn the bolt to change the beam axis of the millimeter wave radar sensor assembly.

*a	Standard Position	*b	Most Downward Position
*c	Most Upward Position	-	-

Vertical axis change	Upward direction: Turn screwdriver to negative (-) side
	Downward direction: Turn screwdriver to positive (+) side

Torque:

1.5 N·m {15 kgf·cm, 13 in·lbf}

HINT:

Make sure to set the beam axis to the most upward or downward position.
Manually change the beam axis to the position *b (most downward position) when error code 12 (radar axis aiming failure upward) is displayed.
Manually change the beam axis to the position *c (most upward position) when error code 13 (radar axis aiming failure downward) is displayed.

(b) Perform Front Beam Axis Adjustment. (See page 2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY VERTICALLY AND HORIZONTALLY (c) Front Beam Axis Adjustment)