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 - FWD, includes Fuel Tank Pressure (FTP) Sensor
5	Fuel Tank Pressure (FTP) Sensor - AWD
6	Accelerator Pedal Position (APP) Sensor - FWD
7	Engine Coolant Temperature (ECT) Sensor
8	Mass Air Flow (MAF) Sensor
9	Camshaft Position (CMP) Sensor
10	Throttle Position (TP) Sensor - AWD or Throttle Actuator Control (TAC) Module - FWD, includes TP Sensor
11	PNP Switch, Automatic Transmission only
12	Knock (KS) Sensor
13	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 Pressure Switching Solenoid - AWD
4	EVAP Vacuum Leak Pump Assembly - FWD
5	Circuit Opening Relay - Fuel Pump Relay
6	EVAP Vent Solenoid - AWD
7	Throttle Actuator Control (TAC) Motor - FWD
8	Idle Air Control (IAC) Valve - AWD
9	Camshaft Position (CMP) Actuator Solenoid
10	Fuel Injector
11	Ignition Coil

Fig 3: Other Components - FWD

Courtesy of GENERAL MOTORS CORP.

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

Fig 4: Other Components - AWD

Courtesy of GENERAL MOTORS CORP.

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

Fig 5: 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 6: 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 7: Fuse Block - Underhood

Courtesy of GENERAL MOTORS CORP.

Fig 8: 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 9: 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 10: 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 11: Identifying Ignition Coils

Courtesy of GENERAL MOTORS CORP.