Lexus ES: ECU Malfunction (C1611)
DESCRIPTION
If the clearance warning ECU assembly detects an internal malfunction during self-diagnosis, DTC C1611 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1611 | ECU Malfunction | When either of the following conditioon is met:
| Clearance warning ECU assembly |
CAUTION / NOTICE / HINT
NOTICE:
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After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
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After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).
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PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
HINT:
After turning the power switch from off to on (IG), wait 3 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs according to the screen on the Techstream.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs(c) Recheck for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes| Result | Proceed to |
|---|---|
| DTC C1611 is output | A |
| DTC C1611 is not output | B |
| A | .gif) | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
| B | | USE SIMULATION METHOD TO CHECK |
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Calibration
CALIBRATION NOTICE: When any of the following parts have been replaced, perform adjustment shown in the following table. If not, the parking support alert system may not operate correctly. ADJUST PARK
Clearance Warning ECU Power Source Circuit
DESCRIPTION This circuit provides power to operate the clearance warning ECU assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before perf
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE PARKING SUPPORT ALERT SYSTEM (a) Customizing with the Techstream NOTICE:
When the customer requests a change in a function, first make sure that the function can be c
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On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT COOLING FAN SYSTEM CAUTION: To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fan when inspecting the cooling fan system. (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on
Initialization
INITIALIZATION NOTICE:
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during headlight ECU sub-assembly LH removal/installation are shown below. for LED Type Turn Signal Light Replaced
