Engine Controls Component Views

Fig 1: Information Sensors/Input Devices

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Power Steering Pressure Switch
2	Heated Oxygen Sensor 1 - HO2S 1
3	Heated Oxygen Sensor 2- HO2S 2
4	EVAP Vacuum Leak Pump Assembly, includes Fuel Tank Pressure (FTP) Sensor
5	Accelerator Pedal Position (APP) Sensor
6	Engine Coolant Temperature (ECT) Sensor
7	Mass Air Flow (MAF) Sensor
8	Camshaft Position (CMP) Sensor
9	Throttle Actuator Control (TAC) Module, includes TP Sensor 1 and TP Sensor 2
10	PNP Switch, Automatic Transmission only
11	Knock (KS) Sensor
12	Crankshaft Position (CKP) Sensor

Fig 2: PCM Controlled Devices

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	EVAP Purge Solenoid
2	Malfunction Indicator Lamp (MIL)
3	EVAP Vacuum Leak Pump Assembly, includes EVAP Vent Solenoid
4	Circuit Opening Relay - Fuel Pump Relay
5	Throttle Actuator Control (TAC) Motor
6	Camshaft Position (CMP) Actuator Solenoid
7	Fuel Injector
8	Ignition Coil

Fig 3: Other Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Powertrain Control Module (PCM)
2	Data Link Connector (DLC)
3	EVAP Canister and Canister Air Filter
4	Noise Filter, for Ignition System
5	EFI Relay

Fig 4: Crankshaft Position (CKP) Sensor and Power Steering Pressure (PSP) Switch Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Generator
2	Crankshaft Position (CKP) Sensor
3	Power Steering Pump
4	Power Steering Pressure (PSP) Switch

Fig 5: ECT Sensor and Noise Filter Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Engine Coolant Temperature (ECT) Sensor
2	Noise Filter, for ignition system
3	Upper Radiator Hose
4	Engine Ground G104 and G105

Fig 6: Locating EFI Relay, Main And EFI Fuses And Fuse Block - Underhood

Courtesy of GENERAL MOTORS CORP.

Fig 7: Instrument Panel (I/P) Components View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Malfunction Indicator Lamp (MIL), Check Engine Lamp
2	Powertrain Control Module (PCM)
3	Fuse Block - Instrument Panel (I/P)
4	Data Link Connector (DLC)

Fig 8: Top View Of Fuse Block - Instrument Panel (I/P) Components View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Circuit Opening Relay, Fuel Pump Relay
2	Fuse Block - Instrument Panel (I/P)

Fig 9: Camshaft Position (CMP) Actuator Solenoid Valve and Filter Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Camshaft Position (CMP) Actuator Solenoid Valve
2	Camshaft Position (CMP) Actuator Solenoid Oil Filter

Fig 10: Identifying Ignition Coils

Courtesy of GENERAL MOTORS CORP.