Lexus ES: Vehicle Information Unmatched (C168D)
DESCRIPTION
If the vehicle information stored in the main body ECU (multiplex network body ECU) which is sent via CAN communication during the clearance warning ECU assembly self-diagnosis does not match that of clearance warning ECU assembly, DTC C168D is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C168D | Vehicle Information Unmatched | Vehicle information does not match |
|
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.
Click here
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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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- When continuing with the inspection, confirm that the necessary procedures (adjustment, calibration, initialization or registration) have been completed before proceeding.
PROCEDURE
| 1. | REGISTER VEHICLE INFORMATION |
(a) Perform the following procedure to register the vehicle information.
-
w/o Parking Support Brake System: Click here
-
w/ Parking Support Brake System: Click here
|
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| 2. | CHECK FOR DTC |
(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 4 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 CodesHINT:
If DTC C168D is still output after registering the vehicle information 3 times, replace the clearance warning ECU assembly.
| Result | Proceed to |
|---|---|
| DTC C168D is output | A |
| DTC C168D is not output | B |
| A | .gif) | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
| B | | USE SIMULATION METHOD TO CHECK |
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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 C
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
SEE MORE:
Checking and replacing fuses
If any of the electrical components
do not operate, a fuse may have
blown. If this happens, check and
replace the fuses as necessary.
Checking and replacing fuses
1. Turn the power switch off.
2. Open the Fuse box cover.
Engine compartment: type A fuse
box
Push the tab in and lift the lid
Utility
UTILITY ALL READINESS HINT:
With "All Readiness", you can check whether or not the DTC judgment has been completed by using the Techstream.
Check "All Readiness" after simulating malfunction symptoms or for validation after finishing repairs.
(a) Connect the Techstream to the DLC3. (b) Turn
