Engine Controls Components Component Locations
| Figure 1: |
Engine Component View -- Vin 1
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| Figure 2: |
Engine Component View Vin K
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| Figure 3: |
Buick Underhood Electrical Center Location
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| Figure 4: |
Buick Underhood Electrical Center Details
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Name | Location | Locator View (Section 8A-201 figure no.) | Connector End View | Group No. |
|---|---|---|---|---|
1-2 Shift Solenoid Valve | Inside automatic transaxle | -- | -- | -- |
2-3 Shift Solenoid Valve | Inside automatic transaxle | -- | -- | -- |
A/C Compressor Clutch Coil | Part of A/C compressor, lower RH front of engine | 9 | -- | -- |
A/C Refrigerant Pressure Sensor | RH side of engine compartment, on accumulator | 37 | -- | -- |
Automatic Transaxle | LH side of engine | 11 | -- | -- |
Automatic Transaxle Fluid Pressure Manual Valve Position Switch | Inside automatic transaxle | -- | 202-40 | -- |
Automatic Transaxle Fluid Temperature (TFT) Sensor | Inside automatic transaxle | -- | -- | -- |
Automatic Transaxle Input Shaft Speed Sensor | Inside automatic transaxle | -- | -- | -- |
Camshaft Position (CMP) Sensor | RH side of engine, above crankshaft pulley | 28 | -- | -- |
Crankshaft Position (CKP) Sensor | RH side of engine at the end of crankshaft, behind harmonic balancer | 26 | -- | -- |
Cruise Control Module | LH side of engine compartment, mounted to strut tower | 41 | 34-1 | -- |
Data Link Connector (DLC) | Below LH side of I/P, right of steering column | 48 | 50-1 | -- |
Engine Coolant Fan Motor #1 (LH) | Mounted on LH side of radiator | 3 | -- | -- |
Engine Coolant Fan Motor #2 (RH) | Mounted on RH side of radiator | 3 | -- | -- |
Engine Coolant Temperature (ECT) Sensor | Top LH side of engine below throttle body | -- | -- | -- |
Engine Oil Level Indicator Switch | In engine oil pan, front of engine, center of pan | 24 | -- | -- |
Engine Oil Pressure Indicator Switch | RH lower rear of engine, above transaxle | 25 | -- | -- |
Evaporative Emission (EVAP) Canister Purge Solenoid Valve (VIN K) | Top front of engine, near center of valve cover | 23 | -- | -- |
Evaporative Emission (EVAP) Canister Purge Solenoid Valve (VIN 1) | Rear top of engine, near center of valve cover | 33 | -- | -- |
Evaporative Emission (EVAP) Canister Purge Vacuum Diagnostic Switch | Rear top of engine, left of generator, above valve cover | 33 | -- | -- |
Evaporative Emission (EVAP) Canister Vent Solenoid Valve | Behind LH side of rear fascia splash shield in wheel well | 72 | -- | -- |
Exhaust Gas Recirculation (EGR) Valve (VIN K) | LH rear top of engine, near throttle body | 30 | 202-52 | -- |
Exhaust Gas Recirculation (EGR) Valve (VIN 1) | LH rear top of engine, near throttle body | 30 | 202-52 | -- |
Fuel Injectors | Top of engine, at each intake port | -- | -- | -- |
Fuel Pump Resistor | Mounted to outside RH front frame rail, forward of front wheel | 35 | -- | -- |
Fuel Tank | Below rear of vehicle | -- | 202-53 | -- |
Fuse Block | RH side of I/P in RF door opening | 60 | -- | -- |
Generator | Top rear RH side of engine | 31 | 202-54 | -- |
Heated Oxygen Sensor (HO2S) #1 | In rear bank exhaust manifold, behind center of engine | 30 | 202-55 | -- |
Heated Oxygen Sensor (HO2S) #2 | In exhaust system, behind catalytic converter | 10 | 202-55 | -- |
Heater And A/C Control | Center of I/P | -- | 202-55 | -- |
Idle Air Control (IAC) Valve (VIN K) | LH top of engine on throttle assembly | 34 | 202-56 | -- |
Idle Air Control (IAC) Valve (VIN 1) | LH rear of engine on supercharger | 34 | 202-56 | -- |
Ignition Control Module (ICM) | Top RH front of engine | 26 | 202-57 | -- |
Instrument Cluster | Top of I/P, above steering column | 49 | 81-5 | -- |
Intake Air Temperature (IAT) Sensor | LH front of engine compartment, in air cleaner duct | 34 | -- | -- |
Knock Sensor #1 | In engine block, rear center, below exhaust manifold | 29 | -- | -- |
Knock Sensor #2 | In engine block, front center, right of starter | 24 | -- | -- |
Manifold Absolute Pressure (MAP) Sensor (VIN K) | Top of engine, RH side of intake manifold | 23 | -- | -- |
Manifold Absolute Pressure (MAP) Sensor (VIN 1) | Top rear of engine, above valve cover | 30 | -- | -- |
Mass Air Flow (MAF) Sensor | LH front of engine, in air cleaner duct | 16 | -- | -- |
Powertrain Control Module (PCM) | front LH side of engine, inside air cleaner assembly | 8 | 6E | -- |
Pressure Control Solenoid Valve | Inside automatic transaxle | -- | -- | -- |
Splice Pack SP205 | Below I/P, RH side of steering column | 55 | 202-64 | -- |
Starter Solenoid | On top of starter, lower front of engine | 17 | -- | -- |
Stoplamp Switch | Below LH side of I/P in right side of brake pedal bracket | 46 | 202-65 | -- |
Supercharger Bypass Valve | LH top of engine above front valve cover | 32 | -- | -- |
Throttle Position (TP) Sensor | Top of engine on throttle assembly | 34 | -- | -- |
Torque Converter Clutch Pulse Width Modulation Solenoid Valve | Inside Automatic Transaxle | -- | -- | -- |
Torque Converter Clutch Solenoid Valve | Inside Automatic Transaxle | -- | -- | -- |
Transaxle Range Switch | Left of engine on transaxle | 11 | 202-65 | -- |
Underhood (U/H) Electrical Center | RH side of engine compartment mounted to strut tower | 5 | 202-66 | -- |
Vehicle Speed Sensor (VSS) | Lower RH side of engine compartment, on transaxle | 25 | -- | -- |
C101 (8 cavities) | I/P wiring harness to engine wiring harness, LH side of engine compartment near strut tower | 41 | 202-0 | -- |
C105 (4 cavities) | Engine wiring harness to fan jumper wiring harness, on radiator RH coolant fan | 3 | 202-2 | -- |
C110 (10 cavities) | Engine wiring harness to ignition control module harness, top of engine near ignition module | 26 | 202-4 | -- |
C111 (7 cavities) | Engine wiring harness to automatic transaxle wiring harness, LH side of engine compartment, top of transaxle | 12 | 202-5 | -- |
C113 (14 cavities) | Engine wiring harness to automatic transaxle wiring harness, LH side of engine compartment, top of transaxle | 13 | 202-6 | -- |
C125 (1 cavity) | Engine wiring harness to knock sensor jumper wiring harness, lower front of engine, left of knock sensor | 29 | 202-7 | -- |
C126 (3 cavities) | Engine wiring harness to engine coolant temperature sensor jumper wiring harness, top front of engine | 23 | 202-8 | -- |
C181 (6 cavities) | I/P wiring harness to engine wiring harness, RH engine compartment, front of strut tower | 41 | 202-12 | -- |
C200 (56 cavities) | I/P wiring harness to body wiring harness, behind RH side of I/P | 61 | 202-13 | -- |
C405 (8 cavities) | Body wiring harness to fuel tank wiring harness, rear compartment floor forward of spare tire well | 67 | 202-36 | -- |
G111 | RH side of engine on ignition control module bracket | 27 | -- | -- |
G113 | Lower LH front of engine on transaxle stud | 24 | -- | -- |
G117 | Lower LH front of engine on transaxle stud | 24 | -- | -- |
G200 | Behind RH side of I/P compartment | 61 | -- | -- |
G203 | Below I/P, RH side of steering column | 54 | -- | -- |
G402 | Inside rear compartment, below RH side of rear window trim panel | 71 | -- | -- |
P100 | Lower RH side of dash panel | 59 | -- | -- |
P101 | Upper LH side of dash panel | 41 | -- | -- |
S105 | Engine wiring harness, front of engine compartment, approximately 4 cm (2 in) from C105 (engine coolant fan jumper connector) breakout | -- | -- | -- |
S106 | Engine wiring harness, LH side of engine compartment, approximately 7 cm (3 in) from PCM breakout | -- | -- | -- |
S107 (VIN K) | Engine wiring harness, RH top of engine, approximately 10 cm (4 in) from generator breakout | -- | -- | -- |
S107 (VIN 1) | Engine wiring harness, LH top front of engine, approximately 4 cm (2 in) from C110 breakout | -- | -- | -- |
S109 | Engine wiring harness, top LH of engine, approximately 6 cm (2 in) from C110 breakout | -- | -- | -- |
S115 (VIN K) | Automatic transaxle wiring harness, inside transaxle housing approximately 11 cm (4 in) from C111 | -- | -- | -- |
S115 (VIN 1) | Automatic transaxle wiring harness, inside transaxle housing approximately 19 cm (7 in) from C113 | -- | -- | -- |
S121 | Engine wiring harness, top of engine near throttle body, approximately 6 cm (2 in) from throttle position sensor breakout | -- | -- | -- |
S122 | Engine wiring harness, LH side of engine compartment, approximately 19 cm (7 in) from transaxle connector breakout | -- | -- | -- |
S144 | Ignition control module wiring harness top of engine near ignition control module, approximately 12 cm (5 in) from C110 breakout | -- | -- | -- |
S145 | Ignition control module wiring harness top of engine near ignition control module, approximately 12 cm (5 in) from C110 breakout | -- | -- | -- |
S202 | I/P wiring harness, RH side of steering column, approximately 8 cm (3 in) from splice pack SP205 breakout | -- | -- | -- |
S211 | I/P wiring harness, RH side of steering column, approximately 20 cm (8 in) from instrument cluster breakout | -- | -- | -- |
S230 | I/P wiring harness, approximately 18 cm (7 in) from radio breakout | -- | -- | -- |
S233 | I/P wiring harness, behind center of I/P, approximately 4 cm (2 in) from radio breakout | -- | -- | -- |
S234 | I/P wiring harness, RH side of steering column, approximately 13 cm (5 in) from instrument cluster breakout | -- | -- | -- |
S270 | I/P wiring harness, behind RH side of I/P, approximately 4 cm (2 in) from blower motor control module | -- | -- | -- |
S281 | I/P wiring harness, RH side of steering column, approximately 20 cm (8 in) from G203 breakout | -- | -- | -- |
S409 | Body wiring harness, LH floor under rear seat, approximately 51 cm (20 in) from C405 | -- | -- | -- |
