Saturn ION (2005) – fuse box diagram
Year of production: 2005
Floor Console Fuse Block
Some fuses are in a fuse block on the driver’s side of the floor console.
| Fuses | Usage |
| FUEL PUMP | Fuel Pump Relay |
| BCM ELECT | Ignition Switch, Body Control Module (BCM) |
| BCM (PWR) | Entry Control, Trunk Release |
| DASH | Instrument Panel, Dimming Switch |
| LIGHTER | Cigar Lighter |
| PARK | Headlamp Switch |
| CLUSTER | Instrument Panel Cluster |
| PWR WINDOWS | Power Window Switches |
| STOP | Stoplamp (Brake) Switch |
| HVAC | Climate Control |
| CRUISE | Climate Control CRUISE Cruise Control Module, Clutch Start Switch |
| AIR BAG | Airbags, Sensing and Diagnostic Module (SDM) |
| WIPER SW | Windshield Wipers and Washers, Transaxle Shift Lock Control Switch |
| RADIO (BATT1) | Radio Receiver, Entertainment Memory |
| ONSTAR | Entertainment, Mobile Communications, OnStar® |
| RADIO (ACC) | Radio Receiver, Entertainment |
| IGN SW | Ignition Switch |
| EPS | Cruise Control Switches, EPS Unit |
| PWR OUTLET | Auxiliary Power Outlet |
| SUN ROOF | Power Sunroof, OnStar Mirror |
| ALC/PARK RELAY | OnStar®, Radio, Instrument Panel Cluster, Body Control Module (Entry Control), Cigar Lighter, Headlamp Switch, License Lamp |
| FUEL PUMP RELAY | Fuel Pump |
| ACC RELAY | Power Windows, Sunroof, Radio, Wiper/Washer Switch, Accessory Power Outlet |
| RUN RELAY | Climate Control (HVAC Blower, Control Heads) |
Engine Compartment Fuse Block
The engine compartment fuse block is located in the engine compartment on the driver’s side of the vehicle.
2.2L L4 Engine
| Fuses | Usage |
| 1 | Engine Control Module, Transaxle Control Module |
| 2 | Not Used |
| 3 | Not Used |
| 4 | Passenger’s Side Headlamp |
| 5 | Air Conditioning |
| 6 | Not Used |
| 7 | Not Used |
| 8 | Anti-lock Brake System, Traction Control Module |
| 9 | Engine Control Module, Electronic Throttle Control |
| 10 | Canister Purge Solenoid, Mass Airflow Sensor, Low Coolant Switch, Oxygen Sensors, Air Pump Relay Coil |
| 11 | Electric Ignition Control Module, Charging System, Neutral Stop Back-Up Switch |
| 12 | Not Used |
| 13 | Transaxle, Engine Control Module (ECM) |
| 14 | Transaxle Control Module, Neutral Stop Back-Up |
| 15 | PRNDL, Back-up Switch |
| 16 | Fuel Injectors (Cylinder 1, 2, 3, 4) |
| 17 | Fog Lamps |
| 18 | Driver’s Side Headlamp |
| 19 | Windshield Wiper |
| 20 | Horn |
| 21 | Entertainment, Premium Radio Amplifier |
| 22 | Anti-lock Brake System, Traction Control Module |
| 23 | Rear Defogger |
| 38 | Starter/Ignition |
| 39 | Body Control Module 1 |
| 40 | Anti-lock Brake System, Traction Control Module |
| 41 | Body Control Module 2 |
| 42 | Not Used |
| 43 | Electric Power Steering |
| 44 | Air Pump Relay Fuse |
| 45 | Cooling Fan |
| 46 | Crank |
| 47 | Body Control Module 1A |
| 48 | Body Control Module (IGN 3) |
| Relays | Usage |
| 24 | Air Conditioning Clutch |
| 25 | Horn |
| 26 | Fog Lamps |
| 27 | Air Solenoid |
| 28 | Run, Crank (IGN1) |
| 29 | Powertrain |
| 30 | Engine Cooling Fan |
| 31 | Engine Control Module |
| 32 | Wiper System 1 |
| 33 | Wiper System 2 |
| 34 | Rear Window Defogger |
| Diodes | Usage |
| 35 | Air Conditioning Diode |
| 36 | Not Used |
| 37 | Wiper Diode |
| Miscellaneous | Usage |
| 49 | Fuse Puller |
2.0L L4 Supercharged Engine
| Fuses | Usage |
| 1 | Engine Control Module |
| 2 | Not Used |
| 3 | Not Used |
| 4 | Passenger’s Side Headlamp |
| 5 | Air Conditioning |
| 6 | Not Used |
| 7 | Not Used |
| 8 | Anti-lock Brake System |
| 9 | Engine Control Module, Electronic Throttle Control |
| 10 | Canister Purge Solenoid, Mass Airflow Sensor, Low Coolant Switch, Oxygen Sensors |
| 11 | Electric Ignition Control Module, Charging System, Neutral Stop Back-Up Switch |
| 12 | Not Used |
| 13 | Engine Control Module |
| 14 | Boost |
| 15 | Back-up Switch |
| 16 | Fuel Injectors |
| 17 | Fog Lamps |
| 18 | Driver’s Side Headlamp |
| 19 | Windshield Wiper |
| 20 | Horn |
| 21 | Entertainment, Premium Radio Amplifier |
| 22 | Anti-lock Brake System |
| 23 | Rear Defogger |
| 38 | Starter/Ignition |
| 39 | Body Control Module 1 |
| 40 | Anti-lock Brake System |
| 41 | Body Control Module 2 |
| 42 | Not Used |
| 43 | Electric Power Steering |
| 44 | Cooling Fan 2 |
| 45 | Cooling Fan 1 |
| 46 | Crank |
| 47 | Body Control Module 1A |
| 48 | Body Control Module (IGN 3) |
| Relays | Usage |
| 24 | Air Conditioning Clutch |
| 25 | Horn |
| 26 | Fog Lamps |
| 27 | Intercooler Pump |
| 28 | Run, Crank (IGN1) |
| 29 | Powertrain |
| 30 | Engine Cooling Fan 1 |
| 31 | Engine Control Module |
| 32 | Wiper System 1 |
| 33 | Wiper System 2 |
| 34 | Rear Window Defogger |
| Diodes | Usage |
| 35 | Air Conditioning Diode |
| 36 | Not Used |
| 37 | Wiper Diode |
| Miscellaneous | Usage |
| 49 | Fuse Puller |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.