GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Geo 🢒 1997 🢒 Prizm 🢒 Engine 🢒 Engine Controls - 1.8L 🢒 Engine Controls Component Views
Figure 1:

Information Sensors/Input Devices
Object Number: 1576614 Size: LF
(1)Crankshaft Position (CKP) Sensor
(2)Engine Coolant Temperature (ECT) Sensor
(3)Intake Air Temperature (IAT) Sensor
(4)Manifold Absolute Pressure (MAP) Sensor
(5)Powertrain Control Module (PCM)
(6)Throttle Position (TP) Sensor
(7)Heated Oxygen Sensor (HO2S)  2
(8)Camshaft Position (CMP) Sensor, in distributor
(9)Knock Sensor (KS)
(10)Oxygen Sensor (O2S)  1
Figure 2:

PCM Controlled Devices
Object Number: 1576557 Size: LF
(1)Idle Air Control (IAC) Motor
(2)Circuit Opening Relay, fuel pump relay
(3)Ignition Coil, in distributor
(4)EFI Relay
(5)Ignition Control Module, in distributor
(6)Exhaust Gas Recirculation (EGR) Solenoid Vacuum Valve
(7)Fuel Injectors
Figure 3:

Oxygen Sensors, EGR, EVAP System
Object Number: 1577556 Size: MF
(1)Positive Crankcase Ventilation (PCV) Valve
(2)Exhaust Gas Recirculation (EGR) Valve
(3)EGR Solenoid Vacuum Valve
(4)EGR Back Pressure Sensor
(5)EVAP Canister Purge Vacuum Switch
(6)Heated Oxygen Sensor 2 (HO2S 2)
(7)EVAP Canister
(8)Oxygen Sensor 1 (O2S 1)