GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Prizm 🢒 Engine 🢒 Engine Controls - 1.8L 🢒 Engine Controls Component Views
Figure 1:

Information Sensors/Input Devices
Object Number: 325380 Size: LF
(1)Fuel Tank Pressure Sensor (located rear of fuel tank)
(2)Heated Oxygen Sensor 1 (HO2S 1)
(3)Vehicle Speed Sensor (VSS)
(4)Intake Air Temperature (IAT) Sensor
(5)Engine Coolant Temperature (ECT) Sensor
(6)Throttle Position (TP) Sensor
(7)PNP Switch
(8)Manifold Absolute Pressure (MAP) Sensor
(9)Camshaft Position (CMP) Sensor
(10)Knock Sensor (KS)
(11)Crankshaft Position (CKP) Sensor
(12)PSP Switch
(13)A/C Compressor Control Module
(14)Heated Oxygen Sensor 2 (HO2S 2)
Figure 2:

PCM Controlled Devices
Object Number: 325388 Size: LF
(1)Malfunction Indicator Lamp (MIL)
(2)Circuit Opening Relay (fuel pump)
(3)EVAP Canister Purge Solenoid Valve
(4)Ignition Coils
(5)Idle Air Control (IAC) Valve
(6)Fuel Injectors
(7)A/C Compressor Control Module
Figure 3:

Other Components
Object Number: 239575 Size: LF
(1)EVAP Canister
(2)EVAP Pressure Switching Solenoid
(3)Data Link Connector (DLC) OBD 2
(4)Data Link Connector (under hood)
(5)EFI Relay
(6)Noise Filter (ignition)
(7)Powertrain Control Module (PCM)
Figure 4:

HO2S Sensors and Vehicle Speed Sensor (VSS)
Object Number: 326381 Size: MF
(1)Vehicle Speed Sensor (VSS)
(2)Heated Oxygen Sensor 1 (HO2S 1)
(3)Heated Oxygen Sensor 2 (HO2S 2)
Figure 5:

Crankshaft Position (CKP) Sensor and Power Steering Pressure (PSP) Switch
Object Number: 392655 Size: MF
(1)Generator
(2)Crankshaft Position (CKP) Sensor
(3)Power Steering Pump
(4)Power Steering Pressure (PSP) Switch
Figure 6:

Data Link Connector (Underhood), Fuse and Relay Block 1, Fuse and Relay Block 2
Object Number: 392650 Size: MF
(1)Air Cleaner
(2)Fuse and Relay Block 1
(3)Fuse and Relay Block 2
(4)Battery
(5)Data Link Connector (Underhood)
Figure 7:

I/P Assembly Components
Object Number: 392644 Size: MF
(1)Hazard Switch
(2)Rear Defogger Switch
(3)Radio
(4)Overdrive Switch
(5)Noise Filter
(6)Powertrain Control Module (PCM)
(7)Junction Block 2
(8)Data Link Connector (DLC) OBD 2
(9)Junction Block 1
(10)Malfunction Indicator Lamp (MIL)
Figure 8:

Stoplamp Switch and CPP Switch (M/T only)
Object Number: 326561 Size: LF
(1)Cruise Control Release Switch (if equipped)
(2)Stoplamp Switch
(3)Clutch Pedal Position (CPP) Switch