SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBUICK1999REGAL LSREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM - SYSTEM TESTING & ENGINE COMPONENT TESTSCOMPUTERIZED ENGINE CONTROLSPOWERTRAIN CONTROL MODULE (PCM) CONNECTOR TERMINAL IDENTIFICATIONPOWERTRAIN CONTROL MODULE (PCM) CONNECTOR TERMINAL IDENTIFICATION (3.5L - INTRIGUE)
1999 Buick Regal LS

Powertrain Control Module (Pcm) Connector Terminal Identification (3.5L - Intrigue)

1999 Buick Regal LSSECTION Powertrain Control Module (Pcm) Connector Terminal Identification (3.5L - Intrigue)
POWERTRAIN CONTROL MODULE (PCM) CONNECTOR TERMINAL IDENTIFICATION (3.5L - INTRIGUE) (1)

Connector Terminal No. Wire Color Function
C1 1-3 ..... Not Used
C1 4 LT GRN 1-2 Shift Solenoid Valve Control
C1 5 DK BLU Cooling Fan Relays No. 2 & 3 Control
C1 6 DK GRN Cooling Fan Relay No. 1 Control
C1 7 ORG Camshaft Position Sensor Signal
C1 8 LT BLU/WHT Crankshaft Position Sensor "A" Signal
C1 9 YEL Crankshaft Position Sensor "B" Signal
C1 10 & 11 ..... Not Used
C1 12 BLK Engine Coolant Temperature Sensor Ground
C1 13 ORG/BLK Manifold Absolute Pressure Sensor Ground
C1 14 & 15 ..... Not Used
C1 16 BLK/WHT Powertrain Control Module Ground
C1 17 BLK Intake Air Temperature Sensor Ground
C1 18 ..... Not Used
C1 19 PPL Powertrain Control Module Ignition Feed
C1 20 ORG Powertrain Control Module Battery
C1 21 ..... Not Used
C1 22 PNK Transmission Fluid Pressure Switch "A"
C1 23 LT BLU Power Steering Pressure Switch Input
C1 24-27 ..... Not Used
C1 28 TAN/WHT Heated Oxygen Sensor No. 2 (Post-Converter) Low
C1 29 TAN Heated Oxygen Sensor No. 1 Low
C1 30 PPL Torque Converter Clutch Brake Switch Input
C1 31 BRN EGR Pintle Sensor Ground
C1 32 GRY EGR Valve Control Ground
C1 33 DK BLU Knock Sensor Signal
C1 34-37 ..... Not Used
C1 38 LT GRN/WHT Idle Air Control Coil "B" High
C1 39-42 ..... Not Used
C1 43 YEL/BLK Fuel Injector No. 6 Control
C1 44 YEL/BLK 2-3 Shift Solenoid Valve Control
C1 45 PPL AIR Solenoid Valve (If Equipped)
C1 46 LT GRN/BLK Fuel Injector No. 2 Control
C1 47 BLK Fuel Injector No. 1 Control
C1 48 RED/BLK Reference Low (Ignition Coil Modules)
C1 49 PPL Ignition Control No. 1
C1 50 RED/WHT Ignition Control No. 2
C1 51 LT BLU/WHT Ignition Control No. 6
C1 52 DK GRN Ignition Control No. 5
C1 53 DK GRN/WHT Ignition Control No. 4
C1 54 LT BLU Ignition Control No. 3
C1 55 DK GRN/WHT Vehicle Speed Signal Output
C1 56 BLK/WHT Powertrain Control Module Ground
C1 57 BLK/WHT Powertrain Control Module Ground
C1 58 DK GRN Serial Data (Class II)
C1 59 ..... Not Used
C1 60 BLK/WHT Powertrain Control Module Ground
C1 61 BLK Throttle Position Sensor Ground
C1 62 DK BLU/WHT A/T Input Shaft Speed Sensor Low
C1 63 RED/BLK A/T Input Shaft Speed Sensor High
C1 64 YEL Vehicle Speed Sensor High
C1 65 PPL Vehicle Speed Sensor Low
C1 66 & 67 ..... Not Used
C1 68 YEL Transaxle Range Switch Input "B"
C1 69 YEL Mass Airflow Sensor Signal
C1 70 ..... Not Used
C1 71 ORG/BLK Desired Torque Input
C1 72 DK GRN Cruise Control Disable/Inhibit Control
C1 73 LT BLU/BLK Fuel Injector No. 4 Control
C1 74 & 75 ..... Not Used
C1 76 DK GRN/WHT EVAP Canister Purge Solenoid Valve Control
C1 77 & 78 ..... Not Used
C1 79 BLK/WHT Fuel Injector No. 5 Control
C1 80 ..... Not Used
C2 1 ..... Not Used
C2 2 WHT EVAP Canister Vent Valve Solenoid Control
C2 3 DK GRN/WHT Fuel Pump Relay Control
C2 4 RED EGR Valve Solenoid Control
C2 5 BRN/WHT Malfunction Indicator Light Control
C2 6 ..... Not Used
C2 7 LT BLU/WHT Idle Air Control Coil "A" High
C2 8 WHT TACH Output
C2 9 TAN/BLK Delivered Torque Output
C2 10 PPL Heated Oxygen Sensor No. 1 Signal
C2 11 PPL/WHT Heated Oxygen Sensor No. 2 (Post-Converter) Signal
C2 12-15 ..... Not Used
C2 16 WHT Transaxle Range Switch Parity Input
C2 17 RED Transmission Fluid Pressure Switch "C"
C2 18 BLK/WHT Transaxle Range Switch Input "A"
C2 19 TAN/BLK Engine Oil Pressure Switch Input
C2 20 & 21 ..... Not Used
C2 22 DK GRN/WHT A/C Request Signal
C2 23 PPL Crank Request
C2 24 PNK Powertrain Control Module Ignition Feed
C2 25 LT GRN Manifold Absolute Pressure Sensor Signal
C2 26 YEL Engine Coolant Temperature Sensor Signal
C2 27 RED/BLK A/C Refrigerant Pressure Sensor Signal
C2 28 BRN EGR Pintle Position Signal
C2 29 GRY Generator Terminal "F" (Field) Input
C2 30-32 ..... Not Used
C2 33 GRY 5-Volt Reference "A" (TP, MAP, EGR)
C2 34 GRY 5-Volt Reference "B" (FTP, A/C Refrigerant Pressure Sensor)
C2 35 BLK Sensor Ground
C2 36-38 ..... Not Used
C2 39 DK GRN/WHT A/C Compressor Clutch Relay Control
C2 40 & 41 ..... Not Used
C2 42 PNK/BLK Fuel Injector No. 3 Control
C2 43 ..... Not Used
C2 44 LT BLU/BLK Idle Air Control Coil "A" Low
C2 45 RED/BLK Pressure Control Solenoid High
C2 46 LT BLU/WHT Pressure Control Solenoid Low
C2 47 & 48 ..... Not Used
C2 49 LT GRN/BLK Idle Air Control Coil "B" Low
C2 50 TAN Intake Air Temperature Sensor Signal
C2 51-54 ..... Not Used
C2 55 DK GRN Fuel Tank Pressure Sensor Input
C2 56 GRY Transaxle Range Switch Input "C"
C2 57 DK BLU Transmission Fluid Pressure Switch "B"
C2 58 BRN Engine Oil Level Indicator Input
C2 59 WHT Cruise Control Engaged Input
C2 60 ..... Not Used
C2 61 RED Generator Terminal "L" Output
C2 62 ..... Not Used
C2 63 YEL Torque Converter Clutch Release Switch
C2 64 & 65 ..... Not Used
C2 66 DK BLU Throttle Position Sensor Signal
C2 67 ..... Not Used
C2 68 YEL/BLK Transaxle Fluid Temperature Sensor Signal
C2 69 PPL Fuel Level Sensor Input
C2 70 & 71 ..... Not Used
C2 72 RED Camshaft Position/Crankshaft Position Sensor Power
C2 73 PNK/BLK Reference Low
C2 74 ..... Not Used
C2 75 BRN AIR Pump Relay Control (If Equipped)
C2 76 YEL/BLK Crank Relay Control
C2 77 ..... Not Used
C2 78 BRN Torque Converter Clutch PWM Solenoid Valve Control
C2 79 & 80 ..... Not Used
(1) See Figure.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.