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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSHYUNDAI1991SONATA V6-3.0LREPAIR AND DIAGNOSISCRUISE CONTROLTESTING AND INSPECTIONSYSTEM OPERATION
1991 Hyundai Sonata V6-3.0L
System Operation
1991 Hyundai Sonata V6-3.0LSECTION System Operation
Checking Automatic Speed Control Main Switch
1. Turn ignition switch to ON position.
2. When turning on main switch, ensure indicator lamp on switch comes on.
3. Drive at speed approximately between 25-85 mph, then press on Set button.
4. Ensure alarm sounds when switch is pressed, and when released speed is a constant speed. If vehicle speed decreases to approximately 12 mph below set speed, the automatic control will be cancelled.
Checking Speed Increase Setting
1. Set desired speed, then press Resume button.
2. Ensure alarm sounds and acceleration continues while switch is pressed, and when released constant speed becomes driving speed.
Checking Speed Reduction Setting
1. Set to desired speed, then press Coast button.
2. Ensure alarm sounds when switch is pressed, then deceleration continues while switch is pressed and when release constant speed at time becomes driving speed.
Checking Automatic Speed Control Cancellation
1. Set automatic speed control.
2. Ensure speed control system is disengage.
3. Ensure brake and clutch pedal is depressed.
4. Move shift lever to ``N'' range.
5. Ensure automatic speed control main switch is Off.
Checking Return To The Set Speed Before Cancellation
1. Set automatic speed control.
2. Ensure automatic speed control is cancelled.
3. Ensure brake and clutch pedal is depressed.
4. Move shift lever to ``N'' range.
5. Drive vehicle at a speed of 25 mph or higher, then press Resume button.
6. Ensure alarm sounds when switch is pressed, then system will return to automatic speed control speed.
1. Turn ignition switch to ON position.
2. When turning on main switch, ensure indicator lamp on switch comes on.
3. Drive at speed approximately between 25-85 mph, then press on Set button.
4. Ensure alarm sounds when switch is pressed, and when released speed is a constant speed. If vehicle speed decreases to approximately 12 mph below set speed, the automatic control will be cancelled.
Checking Speed Increase Setting
1. Set desired speed, then press Resume button.
2. Ensure alarm sounds and acceleration continues while switch is pressed, and when released constant speed becomes driving speed.
Checking Speed Reduction Setting
1. Set to desired speed, then press Coast button.
2. Ensure alarm sounds when switch is pressed, then deceleration continues while switch is pressed and when release constant speed at time becomes driving speed.
Checking Automatic Speed Control Cancellation
1. Set automatic speed control.
2. Ensure speed control system is disengage.
3. Ensure brake and clutch pedal is depressed.
4. Move shift lever to ``N'' range.
5. Ensure automatic speed control main switch is Off.
Checking Return To The Set Speed Before Cancellation
1. Set automatic speed control.
2. Ensure automatic speed control is cancelled.
3. Ensure brake and clutch pedal is depressed.
4. Move shift lever to ``N'' range.
5. Drive vehicle at a speed of 25 mph or higher, then press Resume button.
6. Ensure alarm sounds when switch is pressed, then system will return to automatic speed control speed.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra 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.