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
SCAN TOOL DATA DEFINITIONS
Battery 1: The scan tool displays the current state of the battery in volts.
Decoded Switch State: The scan tool displays the current state of the decoded switch state as Undecided, Lock, Unlock, or Off.
Door Lock Switch: The scan tool displays the current state of the door lock switch in volts.
Driver Door Switch: The scan tool displays the current state of the drivers door ajar switch as either open or closed.
Drivers Door Unlock Fdbk.: The scan tool displays the current state of the drivers door unlock Fdbk. as On/Off.
Fob ID: The scan tool displays the key fob by number 1 through 4 or none, that was last used to enter the vehicle.
Lock All Doors Fdbk.: The scan tool displays the current state of the lock all doors Fdbk. as On/Off.
Passenger Door Switch: The scan tool displays the current state of the passengers door ajar switch as either open or closed.
RKE Lock Button: The scan tool displays the current state of the lock button on the key fob that is being operated as On/Off.
RKE Low Battery: The scan tool displays the current RKE low battery status as Yes/No. If the fob battery voltage falls below 2.5 volts the RKE low battery display will read YES.
RKE Panic Button: The scan tool displays the current state of the panic button on the key fob that is being operated as On/Off.
RKE Sinc: The scan tool displays the current state of synchronization between the key fob and the integrated body control module (IBCM) as Yes/No.
RKE Trunk Button: The scan tool displays the current state of the trunk button on the key fob that is being operated as On/Off.
RKE Unlock Button: The scan tool displays the current state of the unlock button on the key fob that is being operated as On/Off.
Trunk Release: The scan tool displays the current state of the trunk release switch as On/Off.
Unlock All Doors Fdbk.: The scan tool displays the current state of the unlock all doors Fdbk. as On/Off.
Factory Service Tools
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.