Toyota Yaris: Dynamic Radar Cruise Control System / Cruise Main Indicator Light Circuit

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Engine & Hybrid System / Cruise Control / Dynamic Radar Cruise Control System / Cruise Main Indicator Light Circuit

DESCRIPTION

When the dynamic radar cruise control system is turned on using the cruise control main switch, the cruise control indicator (vehicle-to-vehicle distance control mode) illuminates. The ECM uses this and other indicators to indicate the status (presence or absence of a preceding vehicle, vehicle-to-vehicle distance, malfunction of system or related systems) of the dynamic radar cruise control system.

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the ECM, refer to Service Bulletin.
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE

1.	PERFORM ACTIVE TEST USING GTS (MULTI DISPLAY ALL (WHITE))

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Combination Meter > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Multi Display All (White)	Multi-information display (White display)	ON	-

Body Electrical > Combination Meter > Active Test

Tester Display
Multi Display All (White)

Result	Proceed to
The multi-information display in the combination meter assembly turns on according to the operation of the Active Test.	A
The multi-information display in the combination meter assembly does not turn on according to the operation of the Active Test.	B

GO TO METER / GAUGE SYSTEM

2.	READ VALUE USING GTS (CRUISE INDICATOR)

(a) Read the Data List according to the display on the GTS.

Powertrain > Radar Cruise1 > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Cruise Indicator	Cruise control indicator status	ON or OFF	ON: Cruise control indicator illuminates OFF: Cruise control indicator turns off	-

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Cruise Indicator

Cruise control indicator status

ON or OFF

ON: Cruise control indicator illuminates

OFF: Cruise control indicator turns off

Powertrain > Radar Cruise1 > Data List

Tester Display
Cruise Indicator

Result	Proceed to
The cruise control indicator illuminates and turns off according to the operation of the cruise control main switch.	A
The cruise control indicator does not illuminate but the Data List items change according to the operation of the cruise control main switch.	B
The cruise control indicator does not illuminate and the Data List items do not change according to the operation of the cruise control main switch.	C

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE COMBINATION METER ASSEMBLY

REPLACE ECM

Distance Control Switch Circuit

DESCRIPTION The vehicle-to-vehicle distance control switch is used to set the distance for vehicle-to-vehicle distance control mode. The vehicle-to-vehicle distance control switch is installed in the steering pad switch assembly...

Cruise SET Indicator Light Circuit

DESCRIPTION The ECM illuminates the cruise SET indicator by sending request signals to the combination meter assembly via CAN communication. The cruise SET indicator illuminates when the dynamic radar cruise control system is controlling vehicle speed...

Other information:

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Components

C..

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: On-vehicle Inspection

ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT NO. 1 TURBO PRESSURE SENSOR (a) Check the terminal voltage. (1) Disconnect the No. 1 turbo pressure sensor connector. (2) Turn the ignition switch to ON. (3) Measure the voltage according to the value(s) in the table below...