Engine Controls Component Views

Fig 1: Information Sensors/Input Devices

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Tank Pressure (FTP) and Fuel Vapor Temperature Sensor
2	Fuel Level Sensor
3	ECT Sensor
4	CMP Sensor
5	HO2S 2 without WU-TWC
6	ABS Control Module
7	HO2S 1
8	HO2S 2 with WU-TWC
9	Knock Sensor
10	PSP Switch-if equipped
11	MAF Sensor
12	IAT Sensor
13	Electrical Load Diode
14	TP Sensor
15	MAP Sensor
16	CKP Sensor-located behind flywheel/flexplate
17	A/C Compressor Control Module
18	VSS

Fig 2: PCM Controlled Devices with ORVR

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Malfunction Indicator Lamp (MIL)
2	Main Relay
3	Fuel Pump Relay
4	Ignition Coils
5	Power Steering Pressure (PSP) Switch
6	EVAP Canister Purge Valve
7	A/C Condenser Fan Relay
8	Idle Air Control (IAC) Valve
9	Exhaust Gas Recirculation (EGR) Valve
10	Fuel Injectors
11	EVAP Canister Vent Valve

Fig 3: Other Engine Control System Components with ORVR

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Speedometer-located in the instrument panel
2	Data Link Connector (DLC)
3	Powertrain Control Module (PCM)
4	Battery
5	Noise Filter for the ignition system
6	EVAP Canister

Fig 4: Engine Compartment View with ORVR

Courtesy of GENERAL MOTORS CORP.

Fig 5: ECT Sensor and EGR Valve

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	EGR Valve
2	ECT Sensor
3	Fuel Injector Electrical Harness Connector
4	Throttle Body Inlet Coolant Line
5	Throttle Body Outlet Coolant Line
6	IAC valve
7	EVAP Canister Purge Valve
8	TP Sensor
9	Fuel Lines
10	Engine Grounds
11	MAP Sensor

Fig 6: Ignition System

Courtesy of GENERAL MOTORS CORP.

Fig 7: Main Relay and Fuel Pump Relay

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Main Relay
2	Fuel Pump Relay
3	Junction Box (located above left side hinge pillar trim panel)