Buick Enclave I (2007-2013) engine control module (ecm) (left side of engine) Wiring diagrams

11 35 39 LOW REF 16 17 2500 2501 GMLAN + GMLAN - 44 82 LOW REF ECT A/C PRESSURE A/C REFRIGERANT PRESSURE SENSOR (NEAR REAR OF A/C COMPRESSOR) AMBI AIR TEMP SENS SIG LOW SPEED GMLAN AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION OUTPUT SHAFT SPEED (OSS) SENSOR BLK WIRE BLK/WHT WIRE BLOWER SPEED DOWN BLOWER SPEED UP BODY CONTROL MODULE (BCM) (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DEFOGGER SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER SENSOR DRIVER TEMP DOWN DRIVER TEMP UP DRL SENSOR ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (LEFT SIDE OF ENGINE) GND POWER MODE GRN WIRE GRY WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE HVAC FUSE I/P FUSE BLOCK (BEHIND RIGHT END OF DASH) IN AIR TEMP SENS SIG PASS SUNLOAD SENS SIG INSIDE AIR TEMPERATURE SENSOR INSTRUMENT CLUSTER SYSTEM LOGIC LOW REF LT BLU/BLK WIRE LT GRN/BLK WIRE MODE DOWN MODE UP ORG/ WIRE ORG/BLK WIRE PASSENGER SENSOR PNK 1 2 WIRE PNK WIRE POWER MODE REAR DEFOG RED/WHT WIRE SUNLOAD SENSOR (UNDER CENTER OF DASH, NEAR WINDSHIELD DEFROST VENT) TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM) UPPER LEFT AIR TEMPERATURE SENSOR (FRONT LEFT END OF HVAC MODULE) UPPER RIGHT AIR TEMPERATURE SENSOR (FRONT RIGHT END OF HVAC MODULE) WHT WIRE YEL WIRE

44 55 42 11 35 39 A/C CLUTCH HI SPD BUS - HI SPD BUS + LOW REF A/C COMPRESSOR CLUTCH (LOWER LEFT FRONT OF ENGINE) A/C COMPRESSOR CLUTCH RELAY A/C PRESSURE A/C REFRIGERANT PRESSURE SENSOR (NEAR REAR OF A/C COMPRESSOR) AC CLTCH FUSE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY EMISSION 2 FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) GRY WIRE HOT AT ALL TIMES HOT W/ POWERTRAIN RELAY ENERGIZED LOGIC HVAC CONTROL MODULE LOGIC INSTRUMENT PANEL CLUSTER (IPC) ORG/BLK WIRE TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ABOVE RIGHT FRONT WHEELWELL) WHT WIRE

19 14 LOW REF EVAP A/C ON IND 44 55 42 11 35 39 A/C CLUTCH HI SPD BUS - HI SPD BUS + LOW REF 5 9 12 SERIAL AMBIENT LOW REF 5060 735 61 COMPUTER DATA LINES SYSTEM 20 25 A/C COMPRESSOR CLUTCH (LOWER LEFT FRONT OF ENGINE) A/C COMPRESSOR CLUTCH RELAY A/C ON SW A/C PRESSURE A/C REFRIGERANT PRESSURE SENSOR (NEAR REAR OF A/C COMPRESSOR) AC CLTCH FUSE BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY EMISSION 2 FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) EVAPORATOR TEMPERATURE SENSOR (RIGHT SIDE OF HVAC MODULE) GRN WIRE GRY WIRE HOT AT ALL TIMES HOT W/ POWERTRAIN RELAY ENERGIZED HVAC CONTROL MODULE LOGIC LOGIC INSTRUMENT PANEL CLUSTER (IPC) LT GRN/BLK WIRE ORG/BLK WIRE TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ABOVE RIGHT FRONT WHEELWELL) WHT WIRE YEL WIRE

1 12 LOW SPEED GMLAN SERIAL DATA HI SPEED GMLAN SERIAL DATA BUS- 12 2 HI SPD GMLAN SERIAL DATA BUS- HI SPD GMLAN SERIAL DATA BUS+ 3 4 HI SPEED GMLAN SERIAL DATA BUS+ HI SPEED GMLAN SERIAL DATA BUS- 5 14 HI SPD GMLAN SERIAL DATA BUS+ HI SPD GMLAN SERIAL DATA BUS- BLK WIRE BLK/WHT WIRE CONTROL SOLENOID VALVE ASSEMBLY AUTOMATIC TRANSMISSION DATA LINK CONNECTOR (DLC) (UNDER LEFT END OF DASH) DATA LINK RESISTOR DK GRN WIRE DSPLY FUSE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (LEFT SIDE OF ENGINE COMPT) ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) FUEL PUMP FLOW CONTROL MODULE HI SPEED GMLAN SERIAL DATA BUS - HI SPEED GMLAN SERIAL DATA BUS- HI SPEED GMLAN SERIAL DATA BUS+ HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT END OF DASH) LT BLU WIRE REAR DIFFERENTIAL CLUTCH CONTROL MODULE (AT REAR DIFFERENTIAL) RED/WHT WIRE TAN WIRE TAN/BLK WIRE VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) (IF EQUIPPED) (LEFT QUARTERPANEL) W/ ARTICULATING HEADLAMPS W/ ARTICULATING HEADLIGHT W/ ONSTAR W/O ARTICULATING HEADLAMPS W/O ARTICULATING HEADLIGHT W/O ONSTAR

45 46 42 55 HI SPD CLG FAN LO SPD CLG FAN SER DATA BUS + SER DATA BUS - 82 44 ECT LOW REF BLK WIRE COMPUTER DATA LINES SYSTEM COOLING FAN SPEED CONTROL RELAY DK BLU WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY EMISSION 2 FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (LEFT SIDE OF ENGINE) FAN 1 FUSE FAN-2 FUSE GRY WIRE HOT AT ALL TIMES HOT W/ POWERTRAIN RELAY ENERGIZED INSTRUMENT PANEL CLUSTER (IPC) LEFT COOLING FAN (MOUNTED TO REAR LEFT SIDE OF RADIATOR) LEFT HIGH SPEED COOLING FAN RELAY LOGIC LT BLU WIRE LT GRN WIRE RED WIRE RIGHT COOLING FAN (MOUNTED TO REAR RIGHT SIDE OF RADIATOR) RIGHT HIGH SPEED COOLING FAN RELAY TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE

1 55 42 GROUND GMLAN SER DATA BUS- GMLAN SER DATA BUS+ 22 8 9 CRUISE CNTRL IND GMLAN SER DATA BUS+ GMLAN SER DATA BUS- 52 56 49 15 34 48 25 47 STOP LAMP SUP VOLT B+ ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) AIR BAG FUSE APP SEN SIG 1 LOW REF APP SEN SIG 2 LOW REF PPL AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (UNDER LEFT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRN WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRUISE CNTRL SW SIG CRUISE IND CRUISE SWITCH DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY ECM FUSE END OF DASH) ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) GMLAN SERIAL DATA GRY WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED I/P FUSE BLOCK (BEHIND RIGHT IGN INSTRUMENT PANEL CLUSTER (IPC) LEFT STEERING WHEEL CONTROL SWITCH LOGIC LOW REF STOP LAMP SW SIG LT BLU WIRE LT GRN WIRE OUTPUT SHAFT SPEED (OSS) SENSOR PNK WIRE PPL PPL 12-VOLT REFERENCE RED/WHT WIRE RESET+ SET- SOUND SYSTEMS STOP LAMP SUP VOLT TAN WIRE TAN/BLK WIRE THROTTLE BODY (TOP REAR OF ENGINE) TP SEN SIG 1 LOW REF TD SENS SIG 2 TAC MOTOR CTRL 2 TAC MOTOR CTRL 1 TRANSMISSION CONTROL MODULE TRANSMISSIONS, SOUND SYSTEMS UNDERHOOD FUSE BLOCK (ABOVE RIGHT FRONT WHEELWELL) WHT WIRE WHT/BLK WIRE YEL WIRE

1 3 4 5 B+ B+ B+ RIGHT TURN SIG IND LAMP 15 14 5 VOLT LOW REFERENCE 15 16 19 LEFT TURN SIGNAL RIGHT TURN SIGNAL HAZARD SW SIG AUTO BCK/UP/STOP FUSE BLK WIRE BLK/WHT WIRE BLUNT CUT TRAILER PROVISION (IF EQUIPPED) BODY CONTROL MODULE (BCM) (UNDER LEFT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP (CHMSL) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) GRY WIRE HAZARD SWITCH HEADLAMP SWITCH HIGH SPEED GMLAN SERIAL DATA BUS + HOT AT ALL TIMES I/P FUSE BLOCK (BEHIND RIGHT END OF DASH) LEFT REAR SIDE MARKER LAMP LEFT TAIL/STOP, TURN SIGNAL LAMP LOW SPD GMLAN SER DATA LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT/TRN/SIG FUSE OFF PARK HEAD REAR PARK LAMPS VOLT RED/WHT WIRE RIGHT REAR SIDE MARKER LAMP RIGHT TAIL/STOP, TURN SIGNAL LAMP RT/TRN/SIG FUSE STOP LAMP SW SIG STP LP SW SIG TAN WIRE TAN/BLK WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (ABOVE RIGHT FRONT WHEELWELL) WHT WIRE YEL WIRE

11 35 39 LOW REF 16 17 2500 2501 COMPUTER DATA LINES SYSTEM GMLAN + GMLAN - 193 735 1450 DEFOGGER SYSTEM 3 4 5 PNK WIRE 44 82 LOW REF ECT A/C GND A/C PRESSURE A/C REFRIGERANT PRESSURE SENSOR (NEAR REAR OF A/C COMPRESSOR) AMBIENT AIR TEMP SIG AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION OUTPUT SHAFT SPEED (OSS) SENSOR AUXILIARY DOOR CTRL AUX BLOWER SPEED BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (LEFT SIDE OF ENGINE) GRN WIRE GRY WIRE HOT AT ALL TIMES HVAC CONTROL MODULE HVAC FUSE I/P FUSE BLOCK (BEHIND RIGHT END OF DASH) INDICATOR INSTRUMENT CLUSTER SYSTEM LOGIC LOW REF LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE POWER MODE POWER MODE GND B+ LOW SPEED GMLAN PPL/WHT WIRE REAR DEFOG RECIRCULATE GND RED WIRE RED/WHT WIRE RH AIR TEMP SW SIG AUX MODE AUX MODE DOOR CTRL TAN WIRE TAN/BLK WIRE TEMPERATURE GND TRANSMISSION CONTROL MODULE (TCM) WHT WIRE YEL WIRE

5 VOLT REF 1 5 VOLT REF 3 5-VOLT REF 2 BLK WIRE BRN WIRE BRN/WHT WIRE CAM POS INTAKE SENS CAM POS EXHAUST SENS CKP SENSOR SIGNAL FED SENSOR SIGNAL CAMSHAFT POSITION (CMP) SENSOR EXHAUST BANK 1 (FRONT OF RIGHT CYLINDER HEAD) CAMSHAFT POSITION (CMP) SENSOR EXHAUST BANK 2 (FRONT OF LEFT CYLINDER HEAD) CAMSHAFT POSITION (CMP) SENSOR INTAKE BANK 1 (FRONT OF RIGHT CYLINDER HEAD) CAMSHAFT POSITION (CMP) SENSOR INTAKE BANK 2 (FRONT OF LEFT CYLINDER HEAD) CRANKSHAFT POSITION (CKP) SENSOR (RIGHT SIDE OF ENGINE BLOCK) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) FUEL RAIL PRESSURE (FRP) SENSOR (TOP FRONT OF ENGINE) GRY WIRE HIGH PRESSURE FUEL PUMP IGN CTRL LO REF BANK 2 KNOCK SENSOR 1 SIGNAL KNOCK SENSOR 2 SIGNAL LOW REF LOW REF 5 VOLT REF 3 LOW REF LOW REF LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/WHT WIRE OIL PRESSURE SW SIG VACUUM ASSIST PUMP RLY ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE PPL PPL CAM POS EXHAUST SENS GENERATOR TURN ON SIG PPL/WHT WIRE STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1271 2700 1589 AIR CONDITIONING SYSTEM 24 25 26 27 PPL PPL PPL 3120 380 AIR CONDITIONING SYSTEM 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 GMLAN SERIAL DATA BUS+ 439 2501 540 447 5991 COMPUTER DATA LINES SYSTEM 459 473 335 1272 1274 1164 6289 3220 17 AIR CONDITIONING SYSTEM A/C REFRIGERANT SENS SIG ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) AIR CONDITIONING SYSTEM APP SENS 2 SIG BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (LEFT SIDE OF ENGINE) EVAP CANISTER VENT SOL FUEL TANK PRES SENS SIG GRY WIRE GRY/WHT WIRE LOW REF LOW REF 5-VOLT REFERENCE 3 FUEL LEVEL SENS SIG LOW REF FUEL PUMP RLY CTRL LOW REF LOW REF TP SENS 2 SIG TP SENS 1 SIG PPL LT BLU WIRE LT BLU/WHT WIRE MAF SENS SIG 5 VOLT REF 1 APP SENS 1 SIG ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PARK/NEUTRAL SIG PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED/WHT WIRE STARTING/CHARGING SYSTEM STOP LP SW SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE BODY (TOP REAR OF ENGINE) TRANSMISSIONS SYSTEM WAKEUP SERIAL DATA WHT WIRE WHT/BLK WIRE YEL WIRE