Engine Controls Component Views. Cadillac DeVille 2003

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2003 🢒 DeVille 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T80-E 🢒 Engine Controls Component Views

Figure 1:

MAP, IAC, ECT, TP Sensors


(1)	Manifold Absolute Pressure (MAP) Sensor
(2)	Idle Air Control (IAC) Valve
(3)	Engine Coolant Temperature (ECT) Sensor
(4)	Throttle Position (TP) Sensor

Figure 2:

Left Side of Engine Compartment


(1)	Mass Air Flow (MAF) Sensor

Figure 3:

Rear of Engine Compartment, on the Top Rear of the Engine


(1)	Secondary Air Injection (AIR) Check Valve (NU6)

Figure 4:

Left Front Corner of the Engine Compartment


(1)	Mass Air Flow (MAF) / Intake Air Temperature (IAT) Sensor
(2)	Engine Control Module (ECM), in the Air Cleaner Assembly

Figure 5:

EVAP Purge Solenoid, and EGR Valve


(1)	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
(2)	Exhaust Gas Recirculation (EGR) Valve

Figure 6:

CKP B, CKP A, Engine Oil Pressure Switch, and Engine Oil Level Switch


(1)	Crankshaft Position (CKP) Sensor B
(2)	Crankshaft Position (CKP) Sensor A
(3)	Engine Oil Pressure (EOP) Switch
(4)	Engine Oil Level Switch

Figure 7:

Front Ignition Coil Cassette

Figure 8:

Rear Ignition Coil Cassette

Figure 9:

CMP, VSS, and HO2S Bank 1 Sensor 1


(1)	Camshaft Position (CMP) Sensor
(2)	Vehicle Speed Sensor (VSS)
(3)	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1

Figure 10:

HO2S Bank 1 Sensor 2 (Post HO2)


(1)	HO2S Bank 1 Sensor 2 (Post HO2)

Figure 11:

HO2S Bank 2 Sensor 1 (Front HO2)


(1)	HO2S Bank 2 Sensor 1 (Front HO2)

Figure 12:

Knock Sensors


(1)	Knock Sensor 1 (Knock Sensor 2 Similar)

Figure 13:

AIR Relay


(1)	Secondary Air Injection (AIR) Pump Relay
(2)	Coolant Level Switch (in Coolant Surge Tank)

Figure 14:

Right AIR Exhaust Hose

Figure 15:

AIR Vacuum Routing


(1)	AIR Vacuum Source Hose
(2)	AIR Vacuum Source Connection
(3)	Control Vacuum to the Front AIR Check Valve

Figure 16:

Left Front of the Engine Compartment, on the Frame Rail


(1)	Secondary Air Injection (AIR) Pump Motor 1
(2)	Electronic Brake Control Module (EBCM)
(3)	Brake Pressure Modulator Valve (BPMV)

Figure 17:

Secondary Air Injection (AIR) Pump


(1)	Secondary Air Injection (AIR) Pump

Figure 18:

IAC Connector and TP Sensor


(1)	Idle Air Control (IAC) Valve Electrical Connector
(2)	Throttle Position (TP) Sensor Electrical Connector
(3)	Throttle Position (TP) Sensor
(4)	Idle Air Control (IAC) Valve

Figure 19:

Fuel Rail Assembly


(1)	Fuel Injector Retaining Clip
(2)	Fuel Injector
(3)	Fuel Rail Assembly

Figure 20:

EVAP Vent Valve


(1)	Retainer
(2)	Fresh Air Line
(3)	Bolt
(4)	Evaporative Emission (EVAP) Canister Vent Solenoid
(5)	Evaporative Emission (EVAP) Canister Vent Solenoid Electrical Connector

Figure 21:

Fuel Tank Pressure Sensor


(1)	Fuel Sender Access Panel
(2)	Fuel Pump and Sender Assembly
(3)	Fuel Tank Pressure (FTP) Sensor