Cruise SET Indicator Light Circuit

DESCRIPTION

When the driving support ECU assembly detects a cruise control switch on signal from the cruise control switch, it sends it to the combination meter assembly through CAN communication. Then the cruise control SET indicator light turns on.
The cruise control SET indicator light circuit uses CAN communication. If there is a malfunction in this circuit, check for DTCs in the CAN communication system before troubleshooting this circuit.

CAUTION / NOTICE / HINT

Note

When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
When replacing the combination meter assembly, make sure to replace it with a new one.

CAUTION:

Observe the following items for safety reasons when using GTS:

Before using the GTS, read the instruction GTS.
Prevent the GTS cable from being caught on the pedals, shift lever or steering wheel when driving with the GTS connected to the vehicle.
When driving the vehicle for testing purposes, 2 people are required. One person should operate the GTS while the other drives the vehicle.

PROCEDURE

PERFORM ACTIVE TEST USING GTS (METER DISPLAY 1)

Select the Active Test, use the GTS to generate a control command, and then check that the combination meter operates Click here.

Combination Meter
Tester Display	Test Part	Control Range	Diagnostic Note
Meter Display 1	Multi-information display	OFF or All	-

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

B

GO TO METER / GAUGE SYSTEM Click here

A

READ VALUE USING GTS (SET/COAST SWITCH)

Turn the cruise control system on using the cruise control main switch (ON/OFF).
w/o Full-speed range following function:

Drive at a speed between approximately 50 km/h (25 mph) and 180 km/h (110 mph).
w/ Full-speed range following function:

Drive at a speed between approximately 0 km/h (0 mph) and 180 km/h (110 mph)

Read the Data List according to the display on the GTS Click here.

Radar Cruise
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
SET/COAST Switch	-SET switch signal / ON or OFF	ON: -/SET switch on OFF: -/SET switch off	-

Result
Result	Proceed to
The cruise control SET indicator illuminates and turns off according to the operation of the cruise control main switch (-/SET switch)	A
The cruise control SET indicator does not illuminate but the Data List item -/SET Switch changes according to the operation of the cruise control main switch (-/SET switch).	B
The cruise control SET indicator does not illuminate and the Data List item -/SET Switch does not change according to the operation of the cruise control main switch (-/SET switch)	C

A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

B

REPLACE COMBINATION METER ASSEMBLY Click here

C

REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

DYNAMIC RADAR CRUISE CONTROL SYSTEM Cruise SET Indicator Light Circuit