Engine Controls Component Views

Fig 1: Locating Sensors And Switches

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Power Steering Pressure Switch
2	Oil Pressure Switch for Rocker Arm Oil Control Solenoid
3	Heated Oxygen Sensor 2 - HO2S 2
4	EVAP Vacuum Leak Pump Assembly, includes Fuel Tank Pressure (FTP) Sensor
5	Heated Oxygen Sensor 1 - HO2S 1
6	Engine Coolant Temperature (ECT) Sensor
7	Mass Air Flow (MAF) Sensor
8	Camshaft Position (CMP) Sensor
9	Throttle Position (TP) Sensor
10	Knock (KS) Sensor
11	Crankshaft Position (CKP) Sensor
12	Secondary AIR Injection Pressure Sensor

Fig 2: Locating 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
4	Circuit Opening Relay - Fuel Pump Relay
5	Rocker Arm Oil Control Solenoid
6	Secondary Air Injection (AIR) Pump
7	Auxiliary Intake Air Control Solenoid
8	Idle Air Control (IAC) Valve and Secondary AIR Solenoid Valve
9	Fuel Injector
10	Camshaft Position (CMP) Actuator Solenoid
11	Secondary AIR Shut-Off Valve
12	Ignition Coil

Fig 3: Locating Powertrain Control Module, EVAP Components, Data Link Connector, EFI Relay And Noise Filter

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Powertrain Control Module (PCM)
2	EVAP Service Port
3	EVAP Canister
4	EVAP Canister Air Filter
5	Data Link Connector (DLC)
6	EFI Relay
7	Noise Filter, for ignition system

Fig 4: Locating Generator, Crankshaft Position Sensor And Power Steering Pump And Pressure Switch

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

Courtesy of GENERAL MOTORS CORP.

Fig 6: Locating Instrument Panel (I/P) Components

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 7: Locating Ignition Coils

Courtesy of GENERAL MOTORS CORP.

Fig 8: Locating Knock Sensor And Intake Manifold

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Knock Sensor (KS)
2	Intake Manifold

Fig 9: Locating Circuit Opening And Fuel Pump Relay, And Fuse Block - Instrument Panel

Courtesy of GENERAL MOTORS CORP.

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