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.
2007 Saturn ION L4-2.0L SCFACTORY OEM SERVICE PROCEDURE
Powertrain Management: Locations
Engine Controls Component Views
Powertrain Control Module (PCM)
1 - Powertrain Control Module (PCM) C1
2 - Powertrain Control Module (PCM) C2
3 - Powertrain Control Module (PCM) C3
4 - Engine Harness
5 - Body Harness
6 - Powertrain Control Module (PCM)
Air Cleaner View
1 - Mass Air Flow (MAF)/Inlet Air Temperature (IAT) Sensor
Upper Right Side of the Engine
1 - Engine Coolant Temperature (ECT) Sensor
2 - Supercharger By-Pass Valve Solenoid
3 - Manifold Absolute Pressure (MAP) Sensor
Rear of the Engine
1 - Heated Oxygen Sensor (HO2S) 1 Connector
2 - Heated Oxygen Sensor (HO2S) 2 Connector
3 - Heated Oxygen Sensor (HO2S) 1
HO2S 2
1 - Catalytic Converter
2 - Heated Oxygen Sensor (HO2S) 2
Upper Left Side of the Engine
1 - Evaporative Emission (EVAP) Canister Purge Solenoid
2 - Camshaft Position (CMP) Sensor
Top Left Side of the Engine
1 - Super Charge Inlet Pressure (SCIP) Sensor
2 - Barometric Pressure (BARO) Sensor
3 - Throttle Body
Left Front of the Engine
1 - Super Charge Inlet Pressure (SCIP) Sensor
2 - Throttle Body
Front of the Engine
1 - Crankshaft Position (CKP) Sensor
2 - Engine Oil Pressure (EOP) Switch
Lower Front of the Engine
1 - Knock Sensor (KS) Connector
2 - Supercharger Intercooler Coolant Pump
Lower LF of the Passenger Compartment (2.0L)
1 - Accelerator Pedal Position (APP) Sensor
2 - C220
Right Rear Side Under Vehicle
1 - C406
2 - Fuel Tank Pressure Sensor
3 - Evaporative Emission (EVAP) Canister Vent Solenoid
Fuel Pump and Sender Assembly
1 - Fuel Pump and Sender Assembly
2 - Fuel Pump Strainer
3 - Fuel Level Sensor
Top of the Engine
1 - Ignition Coil 1
2 - Ignition Coil 2
3 - Ignition Coil 3
4 - Ignition Coil 4
Top Front of the Engine
1 - Fuel Injector 1
2 - Fuel Injector 2
3 - Fuel Injector 3
4 - Fuel Injector 4
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.