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 INDICATION CONDITIONSASCD INDICATOR CONDITION SPECIFICATION CRUISE LAMP - Ignition switch: ON
MAIN switch: Pressed at the 1st time → at the 2nd time ON → OFF SET LAMP - MAIN switch: ON
- When vehicle speed is 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.
OK or NG
OK: GO TO 3.
NG: Perform trouble diagnosis for DTC U1000, U1001. Refer to "DTC U1000, U1001 CAN COMMUNICATION LINE ".
- CHECK DTC WITH "UNIFIED METER AND A/C AMP."
Refer to "SELF-DIAG RESULTS ".
OK or NG
OK: GO TO 4.
NG: Go to "DTC [B2202] METER COMMUNICATION CIRCUIT ".
- CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".
>> INSPECTION END
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.