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
Engine Views
Power and Grounding Component Views
Rear View of the Engine
1 - Transmission Control Module (TCM)
2 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
3 - C171 Engine Harness to Body Harness
4 - Ignition Coil 4 (2.0L,2.4L)
5 - Ignition Coil 3 (2.0L,2.4L)
6 - Ignition Coil 2 (2.0L,2.4L)
7 - Camshaft Position (CMP) Actuator Solenoid - Intake (2.4L)
8 - Camshaft Position (CMP) Actuator Solenoid - Exhaust (2.4L)
9 - Ignition Coil 1 (2.0L,2.4L)
10 - Vehicle Speed Sensor (VSS) - Automatic Transmission
11 - Heated Oxygen Sensor (HO2S) 2
12 - Heated Oxygen Sensor (HO2S) 2 Connector
13 - Heated Oxygen Sensor (HO2S) 1
14 - Park/Neutral Position (PNP) Switch (MN5)
15 - Engine Coolant Temperature (ECT) Sensor (2.2L, 2.4L)
16 - Camshaft Position (CMP) Actuator Solenoid - Exhaust (2.4L)
17 - G107 (2.4L)
18 - Fuse Block - Underhood C1
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.