Engine Controls Component Views. Geo Prizm 1997

For 1990-2009 cars

Figure 1:

#### Information Sensors/Input Devices

(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

(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

(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)