Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Procedure
- CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.
ASCD INDICATOR SPECIFICATIONASCD INDICATOR CONDITION SPECIFICATION CRUISE LAMP - Ignition switch: ON
MAIN switch: Pressed at 1st time → 2nd ON → OFF SET LAMP - MAIN switch: ON
- Vehicle: Between 40 km/h (25 MPH) and 144 km/h (89 MPH)
ASCD: Operating ON ASCD: Not Operating OFF OK or NG
OK: INSPECTION END
NG: GO TO 2.
- CHECK DTC
Check that DTC U1000 or U1001 is not displayed.
Yes or No
Yes: Perform trouble diagnoses for DTC U1000, U1001, refer to "DTC U1000, U1001 CAN COMMUNICATION LINE ".
No: GO TO 3.
- CHECK COMBINATION METER OPERATION
Does combination meter operate normally?
Yes or No
Yes: GO TO 4.
No: Check combination meter circuit. Refer to "COMBINATION METERS ".
- CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".
: INSPECTION END
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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