Lexus NX: 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 hybrid vehicle control ECU 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 hybrid vehicle control ECU, refer to Registration.

    Click here

  • 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 TECHSTREAM (MULTI DISPLAY ALL [WHITE])

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Combination Meter > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Meter Display 1

Multi-information display

OFF, All

-

Body Electrical > Combination Meter > Active Test

Tester Display

Meter Display 1

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

B

GO TO METER / GAUGE SYSTEM

A

2.

READ VALUE USING TECHSTREAM (CRUISE INDICATOR)

(a) Enter the following menus: Powertrain / Radar Cruise1 / Data List.

(b) Read the Data List according to the display on the Techstream.

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

-

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

A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

B

REPLACE COMBINATION METER ASSEMBLY

C

REPLACE HYBRID VEHICLE CONTROL ECU

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