DTC U3003:17 [HEADLIGHT AUTO LEVELING SYSTEM]


id0902i7935300

Description

Auto leveling control module high power supply voltage input

Detection condition
•  Auto leveling control module power supply circuit voltage of 18.1 V or more is detected for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe function
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
Possible cause
•  DTCs are stored in the PCM.
•  Battery malfunction
•  Generator malfunction
•  Auto leveling control module malfunction
System wiring diagram
Not applicable

Diagnostic Procedure

Step

Inspection

Action

1
VERIFY PCM DTCs
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
No
Go to the next step.
2
INSPECT BATTERY
•  Is the battery normal?
Yes
Go to the next step.
No
Replace the battery, then go to Step 4.
3
INSPECT GENERATOR
•  Is the generator normal?
Yes
Go to the next step.
No
Replace the generator, then go to the next step.
4
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear the DTC for the auto leveling control module using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 5 s or more.
•  Retrieve the auto leveling control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the auto leveling control module, then go to the next step.
No
Go to the next step.
5
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.