Lexus ES: 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
.gif)
- 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 |
(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 |
|---|---|---|---|
| Multi Display All (White) | Multi-information display (White display) | ON | - |
| 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 |
| B | .gif) | GO TO METER / GAUGE SYSTEM |
|
.gif)
| 2. | READ VALUE USING TECHSTREAM |
(a) Enter the following menus: Powertrain / Radar Cruise 1 / 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 |
READ NEXT:
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:
Height Sensor Initialization Incomplete (B2450)
DESCRIPTION The headlight ECU sub-assembly LH stores this DTC if initialization has not been performed after it was replaced. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from B2450 Height Sensor Initialization Incomplete
The engine switch is on (IG).
Fuel Tank Pressure Sensor Circuit Short to Ground (P145011,P145015,P14502A,P14502F)
DTC SUMMARY DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P145011 Fuel Tank Pressure Sensor Circuit Short to Ground The output voltage of the fuel tank pressure sensor is less than 0.25 V for 0.5 seconds or more.
Fuel tank pressure sensor
C
