2004 Saturn Ion Red LineFACTORY OEM SERVICE PROCEDURE

Engine Controls Component Views

Fig 1: Powertrain Control Module (PCM) Component View
GM1403070Courtesy of GENERAL MOTORS CORP.
Callout Component Name
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)
Fig 2: Air Cleaner Component View
GM1403077Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Mass Air Flow (MAF)/Inlet Air Temperature (IAT) Sensor
Fig 3: Upper Right Side Of Engine Component View
GM1403091Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine Coolant Temperature (ECT) Sensor
2 Supercharger By-Pass Valve Solenoid
3 Manifold Absolute Pressure (MAP) Sensor
Fig 4: Rear Of Engine Component View
GM1403101Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Heated Oxygen Sensor (HO2S) 1 Connector
2 Heated Oxygen Sensor (HO2S) 2 Connector
3 Heated Oxygen Sensor (HO2S) 1
Fig 5: HO2S 2 Component View
GM1403103Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Catalytic Converter
2 Heated Oxygen Sensor (HO2S) 2
Fig 6: Upper Left Side Of Engine Component View
GM1403106Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Evaporative Emission (EVAP) Canister Purge Solenoid
2 Camshaft Position (CMP) Sensor
Fig 7: Top Left Side Of Engine Component View
GM1403108Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Super Charge Inlet Pressure Sensor
2 Barometric Pressure Sensor
3 Throttle Actuator Control (TAC) Module
Fig 8: Left Front Of Engine Component View
GM1403110Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Super Charge Inlet Pressure Sensor
2 Throttle Actuator Control (TAC) Module
Fig 9: Front Of Engine Component View
GM1403112Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Crankshaft Position (CKP) Sensor
2 Engine Oil Pressure (EOP) Switch
Fig 10: Lower Front Of Engine Component View
GM1403114Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Knock Sensor (KS) Connector
2 Supercharger Intercooler Coolant Pump
Fig 11: Top Of Engine Component View
GM1540555Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Ignition Coil 1
2 Ignition Coil 2
3 Ignition Coil 3
4 Ignition Coil 4
Fig 12: Top Front Of Engine Component View
GM1540542Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Injector 1
2 Fuel Injector 2
3 Fuel Injector 3
4 Fuel Injector 4
Fig 13: Lower LF Of Passenger Compartment Component View (2.0L)
GM1403116Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Accelerator Pedal Position (APP) Sensor
2 C220
Fig 14: Fuel Pump & Sender Assembly Component View
GM61866Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Tank Pressure (FTP) Sensor
2 Fuel Pump and Sender Assembly
3 Fuel Pump Strainer
4 Fuel Level Sensor
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.

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