Engine Controls Components. Buick Roadmaster 1996

For 1990-2009 cars

#### Component Location

Name | Location | 8A Cell 201 Figure: | Connector End View | Group No.
--- | --- | --- | --- | ---
A/C Compressor Clutch Relay | Underhood electrical Center | -- | -- | --
A/C Cycling Switch | RH rear of the engine compartment, attached to the A/C accumulator | -- | -- | --
A/C Refrigerant Pressure Sensor | In high pressure line, below coolant reservoir | 12 | -- | --
Bank #1, Left Front Heated Oxygen Sensor (HO2S) | Lower LH side of the Engine, Forward of the Three-way Catalytic Converter (TWC) | -- | -- | --
Bank #1, Left Rear Heated Oxygen Sensor (HO2S) | Lower RH side of the Engine, Rear of the Three-way Catalytic Converter (TWC) | -- | -- | --
Bank #2, Right Front Heated Oxygen Sensor (HO2S) | Lower RH side of the Engine, Forward of the Three-way Catalytic Converter (TWC) | -- | -- | --
Bank #2, Right Rear Heated Oxygen Sensor (HO2S) | Lower RH side of the Engine, Rear of the Three-way Catalytic Converter (TWC) | -- | -- | --
Crankshaft (CKP) Position Sensor | Lower right side of the Engine, in the Front Engine Cover | -- | -- | --
Data Link Connector (DLC) | Below LH side of the I/P, right of the Steering Column | 22 | -- | --
Distributor | Front of the Engine behind the Engine Coolant Pump | 12 | -- | --
Engine Coolant Temperature (ECT) Sensor | Lower front of the Engine, mounted to the Coolant Pump | 16 | -- | --
Engine Oil level Sensor | LH side of the Engine Oil pan | -- | -- | --
Evaporative Emissions (EVAP) Canister Purge Solenoid Valve | Top RH front of the Engine, near the Manifold Absolute Pressure (MAP) Sensor | 12 | -- | --
Evaporative Emission Vacuum Switch | Forward of the EVAP Canister Purge Solenoid Valve, Right side of the Engine | -- | -- | --
Exhaust Gas Recirculation (EGR) Solenoid Valve | Top LH Rear of the Engine, near the EGR Valve | 11 | -- | --
Fuel Injectors | Top of the Engine in the Fuel Rail above each Cylinder | 11, 12 | -- | --
Fuel Pump | Rear of the Vehicle in the Fuel Tank | -- | -- | --
Fuel Pump Relay | Underhood electrical Center | -- | -- | --
I/P Fuse Block | LH I/P, accessible with LH front door open | 19 | -- | --
Idle Air Control (IAC) Motor | Top RH Front of the Engine on the side of the Throttle Body | 12 | -- | --
Ignition Coil | LH Front of the Engine | 11 | -- | --
Ignition Coil Module | LH Front of the Engine | 11 | -- | --
Intake Air Temperature (IAT) Sensor | Front of the Engine, in the side of the Air Intake Duct | 12 | -- | --
Instrument Cluster | LH side of the I/P | 16 | -- | --
Knock Sensor, LH | Bottom LH side of the Engine below the Exhaust Manifold | -- | -- | --
Knock Sensor, RH | Bottom RH side of the Engine below the Exhaust Manifold | -- | -- | --
Manifold Absolute Pressure (MAP) Sensor | Top RH Front of the Engine, Mounted to the Intake Manifold | 12 | -- | --
Mass Air Flow (MAF) Sensor | Front of the Engine, in the Air Intake Duct | -- | -- | --
Park Neutral Position switch | Near base of steering column, on column or near floor mounted shifter | -- | -- | --
Power steering pressure switch | In power steering line near the power steering pump | -- | -- | --
Powertrain Control Module (PCM) | Engine Compartment, forward of LH wheelhouse under air cleaner | 8 | -- | --
Secondary Air Injection (AIR) Bleed Valve Solenoid | Left Side of the Engine Compartment, attached to the AIR Pump | -- | -- | --
Secondary Air Injection (AIR) Pump | LH Front of the Engine | 1 | -- | --
Secondary Air Injection (AIR) Pump Relay | Underhood electrical center | -- | -- | --
Throttle Position (TP) Sensor | Top RH Front of the Engine on the side of the Throttle Body | 12 | -- | --
Theft deterrent module | Behind left hand I/P, left of the brake pedal bracket | 19 | -- | --
Underhood electrical center | Engine Compartment, attached to the RH Wheelhouse | 1 | -- | --
Vehicle speed sensor | RH rear of the transmission, near the prop shaft | 28 | -- | --