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.
2003 Saturn ION L4-2.2L VIN FFACTORY OEM SERVICE PROCEDURE
Scan Tool Data Definitions - Cruise Control
SCAN TOOL DATA DEFINITIONS
Cruise Switch : Displays On or Off. Indicates the status of the cruise control On/Off switch.
Cruise Set/Coast : Displays On or Off. Indicates the status of the cruise set coast switch. Displays On when the cruise set/coast switch is being depressed.
Cruise Resume/Accel: Displays On or Off. Indicates the status of the cruise resume/accel switch. Displays On when the cruise resume/accel switch is being depressed.
Cruise Clutch Command: Displays On or Off. Indicates the commanded state Cruise Control Servo Clutch Control circuit. When the clutch is commanded On, Cruise Control Servo Clutch Control circuit is pulled low.
Cruise Direction Command: Displays Idle or WOT. When the Cruise Control Servo Direction Signal circuit is commanded high, cruise direction is towards WOT. When the Cruise Control Servo Direction Signal is commanded low, cruise direction is towards Idle.
M/T Clutch Disengage: Displays No or Yes. If the clutch pedal is depressed, this Scan tool parameter will display Yes.
Cruise in Released State: Displays No or Yes. If cruise is engaged and regulating vehicle speed the parameter displays Yes.
Cruise Switch Voltage: Displays the voltage at the ECM on the Cruise Control Set/Coast and Resume/Accelerate Switch Signal circuit.
Cruise Vehicle Set Speed: Displays the vehicle speed at which the driver set the cruise control speed.
Cruise Delta: Displays the difference between the cruise control set speed and the actual vehicle speed.
Cruise Brake Switch: Displays Released or Applied. The cruise brake switch is a normally closed switch that indicates the brake pedal position. When the brake pedal is released there is ignition voltage present on the TCC Brake Switch/Cruise Control Release Signal.
Stop Lamp Switch: Displays Released or Applied. The stop lamp switch is a normally open switch that indicated the brake pedal position and is hard wired to the stop lamps. When the brake pedal is released there is no voltage on the signal circuit.
Cruise Move Command: Displays On or Off. This parameter displays on when the ECM is commanding the cruise control module to increase or decrease throttle angle. The Cruise Control Servo Move Signal circuit is a Pulse Width Modulated (PWM) signal and the duty cycle controls the amount of movement.
C/C Move Ckt.-Low Volt: The ECM continuously monitors the Cruise Control Servo Move Signal circuit for a short to ground when the circuit is commanded high (WOT). If the ECM detects a short to ground, C/C Move Ckt.-Low Volt test will display Test Fail.
C/C Move Ckt.-Open: The ECM continuously monitors the Cruise Control Servo Move Signal circuit for a open circuit when the circuit is commanded low. If the ECM detects a open circuit the, C/C Move Ckt.-Open test will display Test Fail.
C/C Move Ckt.-High Volt: The ECM continuously monitors the Cruise Control Servo Move Signal circuit for a short to voltage when the circuit is commanded low. If the ECM detects a short to ground, C/C Move Ckt.-High Volt test will display Test Fail.
C/C Dir. Ckt.-Low Volt: The ECM continuously monitors the Cruise Control Servo Move Direction Signal circuit for a short to ground. If the ECM detects a short to ground, C/C Dir. Ckt.-Low Volt test will display Test Fail.
C/C Dir. Ckt.-Open: The ECM continuously monitors the Cruise Control Servo Move Direction Signal circuit for a open circuit. If the ECM detects a open circuit, C/C Move Ckt.-Open test will display Test Fail.
C/C Dir. Ckt.-High Volt: The ECM continuously monitors the Cruise Control Servo Move Direction Signal circuit for a short to voltage. If the ECM detects a short to voltage C/C Move Ckt.-High Volt test will display Test Fail.
C/C Clutch-Low Volt: The ECM continuously monitors the Cruise Control Servo Clutch Control circuit for a short to ground when the clutch is commanded off. If the ECM detects a short to ground C/C Clutch-Low Volt test will display Test Fail.
C/C Clutch-Open: The ECM continuously monitors the Cruise Control Servo Clutch Control circuit for a open circuit when the clutch is commanded Off. If the ECM detects a short to ground C/C Clutch-Open test will display Test Fail.
C/C Clutch-Low Volt: The ECM continuously monitors the Cruise Control Servo Clutch Control circuit for a short to voltage when the clutch is commanded On. If the ECM detects a short to Voltage C/C Clutch-High Volt test will display Test Fail.
Factory Service Tools
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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.