GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Firefly (Canada) 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Engine Controls Component Views
Figure 1:

Component Location - Information Sensors/Input Devices
Object Number: 236948 Size: LF
(1)MAP Sensor
(2)HO2S 2
(3)VSS M/T (part of speedometer)
(4)VSS A/T
(5)Transmission range switch (A/T only)
(6)ECT Sensor
(7)CMP Sensor
(8)HO2S 1
(9)CKP Sensor
(10)PSP Switch
(11)IAT Sensor
(12)TP Sensor
(13)Diode Module (electrical load signal)
(14)Fuel Tank Pressure Sensor
(15)Fuel Level Sensor
(16)A/C Amplifier
Figure 2:

Component Location - PCM Controlled Devices
Object Number: 237573 Size: LF
(1)EVAP Canister Purge Valve
(2)Malfunction Indicator Lamp (MIL)
(3)Upshift Indicator Lamp (M/T only)
(4)Cooling Fan Control Relay
(5)Fuel Pump Relay
(6)Ignition Coils
(7)Fuel Injectors
(8)EVAP Canister Vent Valve
(9)EVAP Tank Pressure Control Solenoid Valve
(10)IAC Valve
Figure 3:

Component Location - Other Components
Object Number: 237575 Size: LF
(1)Data Link Connector (DLC)
(2)Junction Block (fuse block)
(3)Main Relay
(4)Battery
(5)EVAP Canister
(6)PCM
(7)Duty Check Data Link Connector
Figure 4:

Ignition Coils and Spark Plug Wires
Object Number: 244208 Size: SH
(1)Spark Plug Wires
(2)Ignition Coils