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
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- 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 | - |
| 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 | .gif) | GO TO METER / GAUGE SYSTEM |
|
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| 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 | - |
| 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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Cruise SET Indicator Light Circuit
DESCRIPTION The hybrid vehicle control ECU illuminates the cruise SET indicator by sending request signals to the combination meter assembly via CAN communication. The cruise SET indicator illuminates
Components
COMPONENTS ILLUSTRATION *1 FORWARD RECOGNITION CAMERA *2 FORWARD RECOGNITION LATCH *3 NO. 1 FORWARD RECOGNITION COVER *4 NO. 2 FORWARD RECOGNITION COVER
SEE MORE:
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use this procedure to troubleshoot the theft deterrent system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS (a) Interview the customer to confirm the trouble. Click here
Front Left Center Sensor (C1AE2)
DESCRIPTION The front center ultrasonic sensor (FLC sensor) is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front center ultrasonic sensor (FLC sensor). If the front center ultrasonic sensor (FLC sensor) has an open circuit or
