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.
Powertrain Verification Test - VER 5: 1.
Inspect the vehicle to ensure that all components related to the repair are connected properly.
Connect the DRB III(R) to the data link connector and erase all codes.
Turn the speed control ON.
Press and release the ACCEL/SET switch. If the speed control did not engage, the repair is not complete. Check for TSBs that pertain to speed control problems and then return to the symptom list.
Momentarily press the ACCEL/SET switch. If the vehicle speed did not increase by at least 2 mph, the repair is not complete. Check for TSBs that pertain to speed control problems and then return to the symptom list.
Press and hold the DECEL/SET switch. The vehicle speed should decrease. If it did not decrease, the repair is not complete. Check for TSBs that pertain to speed control problems and then return to the symptom list.
Momentarily press the DECEL/SET switch. If the vehicle speed did not decrease by at least 1 mph, the repair is not complete. Check for TSBs that pertain to speed control problems and then return to the symptom list.
Using caution, press and release the brake pedal. If the speed control did not disengage, the repair is not complete. Check for TSBs that pertain to speed control problems and then return to the symptom list.
Bring the vehicle speed back up to 35 mph
Press the RESUME switch. If the speed control did not resume the previously set speed, the repair is not complete. Check for TSBs that pertain to speed control problems and then return to the symptom list.
Ensure vehicle speed is greater than 35 mph and release the SET switch. If vehicle did not adjust and set a new vehicle speed, the repair is not complete. Check for TSBs that pertain to speed control problems and then return to the symptom list.
Bring the vehicle speed back up above 35 mph and engage speed control. Press the OFF switch to turn OFF, (cruise light will be off). If the speed control did not disengage, the repair is not complete. Check for TSBs that pertain to speed control problems and then return to the symptom list.
If the vehicle successfully passed all of the previous tests, the speed control system is now functioning as designed. The repair is now complete.
Did the speed control pass the above test?
- Yes >> Repair is complete.
- No >> Repair is not complete, refer to appropriate symptom.
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.