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

Toyota Yaris XP210 (2020-2026) 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

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