2007 Chevrolet Optra5 LS, AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Controls Component Views

Fig 1: Identifying Manifold Absolute Pressure (MAP), Oil Pressure And Throttle Position (TP) Sensors (L79, LDA, L34)
GM1480966Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Manifold Absoulte Pressure (MAP) Sensor
2 Engine Oil Pressure Switch
3 Throttle Position (TP) Sensor
4 Idle Air Control (IAC)
Fig 2: View Of Fuel Injectors, Heated Oxygen Sensor (HO2S) 1, Heated Oxygen Sensor (HO2S) 2, Idle Air Control (IAC) Valve And Intake Air Temperature (IAT) Sensor (L79, LDA)
GM1480967Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Injector 1
2 Fuel Injector 2
3 Fuel Injector 3
4 Fuel Injector 4
5 Heated Oxygen Sensor (HO2S) 1 (MR-140), Oxygen Sensor (HV-240)
6 Heated Oxygen Sensor (HO2S) 2 (MR-140)
7 Idle Air Control (IAC) Valve
8 Intake Air Temperature (IAT) Sensor
Fig 3: View Of Crankshaft Position (CKP) Sensors, EVAP Valve And Ignition Coil Modules (L79, LDA, L34)
GM1480971Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Evaporative Emissions (EVAP) Canister Purge Solenoid Valve
2 Crankshaft Position (CKP) Sensor
3 Ignition Coil Modules
Fig 4: View Of Engine Control Module (ECM), Engine Coolant Temperature (ECT), Camshaft Position (CMP) and Rough Road Sensors (L79, LDA, L34)
GM1480975Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine Control Module (ECM)
2 Engine Coolant Temperature (ECT) Sensor
3 Camshaft Position (CMP) Sensor
4 Rough Road Sensor
Fig 5: View Of Exhaust Gas Recirculation (EGR) Valve And Knock Sensor (KS) (L79, LDA)
GM1480970Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Exhaust Gas Recirculation (EGR) Valve (Euro Emissions)
2 Knock Sensor (KS)
3 Exhaust Gas Recirculation (EGR) Valve (ECE 83 Emissions)
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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