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.
Test SC-VER - Speed Control Verification
Reconnect and reassemble all previously tested components. If Powertrain Control Module (PCM) has been changed, perform the following:
- If vehicle is equipped with factory theft alarm, start vehicle at least 20 times so alarm system may be activated when desired.
- Connect DRB to data link connector and erase faults.
To ensure no other fault remains, perform the following:
- Road test vehicle at a speed greater than 35 MPH. Press speed control ON/OFF switch in ON position. Press and release SET switch. If speed control did not engage, repair is not complete. Check pertinent Technical Service Bulletins (TSBs) and return to TEST SC-1A .
- On stalk switch equipped vehicles, quickly depress and release SET switch. On steering wheel switch equipped vehicles, quickly press and release RESUME/ACCEL switch. If vehicle speed did not increase by 2 MPH, repair is not complete. Check pertinent Technical Service Bulletins (TSBs) and return to TEST SC-1A .
- Press and release brake pedal. If speed control did not disengage, repair is not complete. Check pertinent Technical Service Bulletins (TSBs) and return to TEST SC-1A .
- Bring vehicle speed back up to 35 MPH. Press RESUME/ACCEL switch. If speed control did not resume previously set speed, repair is not complete. Check pertinent Technical Service Bulletins (TSBs) and return to TEST SC-1A .
- Hold SET switch down. If vehicle did not decelerate, repair is not complete. Check pertinent Technical Service Bulletins (TSBs) and return to TEST SC-1A .
- Ensure vehicle speed is greater than 35 MPH and release SET switch. If vehicle did not adjust and set a new vehicle speed, repair is not complete. Check pertinent Technical Service Bulletins (TSBs) and return to TEST SC-1A .
- Turn ON/OFF switch to OFF position. If speed control did not disengage, repair is not complete. Check pertinent Technical Service Bulletins (TSBs) and return to TEST SC-1A
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If vehicle successfully passed all previous tests, speed control system is now functioning correctly. Repair is complete.
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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.