Cadillac SRX I (2003-2009) hvac control module (center of dash, under radio) Wiring diagrams

4 3 PPL A/C CMPRSR CLUTCH RELAY AC CLTCH FUSE BATTERY POS VOL LOW REFERENCE GROUND BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER MOTOR SPEED CTRL BLOWER RELAY BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH) BRN WIRE DEFOGGER SYSTEM COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DK PNK WIRE EMISSION 2 FUSE GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ IGN MAIN RELAY ENERGIZED HOT W/ PWR/TRN RELAY ENERGIZE HVAC CONTROL MODULE (CENTER OF DASH, UNDER RADIO) IGNITION 3 VOLTAGE LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MISC IGN FUSE NCA WIRE NEAR BASE OF STEERING COIL) PNK WIRE PPL/WHT WIRE RECIRCULATION ACTUATOR (LEFT OF BLOWER MOTOR ON HVAC) RED/WHT WIRE SUNLOAD/ AMBIENT LIGHT SENSOR (AT TOP CENTER OF DASH) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (AT RIGHT FRONT OF ENGINE COMPT) DISPLAY FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

10 12 HI SPEED SERIAL DATA + HI SPEED SERIAL DATA - 13 14 GMLAN SERIAL DATA GMLAN SERIAL DATA 4 3 GMLAN SERIAL DATA GMLAN SERIAL DATA 4 5 GMLAN SERIAL DATA GMLAN SERIAL DATA BLK WIRE BLK/WHT WIRE DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DK GRN WIRE GMLAN SERIAL DATA HI SPEED SERIAL DATA + HI SPEED SERIAL DATA - HI SPEED SERIAL DATA + HI SPEED SERIAL DATA - 24 25 HIGH SPEED GMLAN SERIAL DATA BUS + HVAC CONTROL MODULE (CENTER OF DASH, UNDER RADIO) INSTRUMENT PANEL CLUSTER (IPC) KW 2000 SERIAL DATA LEFT HEADLAMP ASSEMBLY LOW SPEED GMLAN SERIAL DATA ONSTAR RADIO REAR SEAT AUDIO MODULE (REAR OF CENTER CONSOLE) RED/WHT WIRE RIGHT HEADLAMP ASSEMBLY TAN WIRE TAN/BLK WIRE TERMINATOR RESISTOR (BEHIND RIGHT REAR QUARTER TRIM) VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) W/ AUTOMATIC HEADLAMPS LEVELING W/ MAGNETIC RIDE CONTROL W/ ONSTAR W/O MAGNETIC RIDE CONTROL W/O ONSTAR WHT/BLK WIRE

BLK WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DR MIRROR HEAT SUP VOL DRIVER DOOR MODULE (DDM) (INSIDE DRIVER DOOR PANEL) DRIVER OUTSIDE REARVIEW MIRROR FRONT PASSENGER DOOR MODULE (FPDM) (INSIDE PASSENGER DOOR TRIM PANEL) GMLAN SERIAL DATA HEATED MIRROR ELEMENT HOT AT ALL TIMES HVAC CONTROL MODULE (CENTER OF DASH, UNDER RADIO) HVAC LOGIC IGN REAR DEFOG INDICATOR JOINT CONNECTOR LOGIC NCA WIRE PASS MIRROR HEAT SUP VOL PPL PASSENGER OUTSIDE REARVIEW MIRROR PPL REAR DEFOG FUSE REAR DEFOG RELAY REAR DEFOG RLY CTRL REAR DEFOGGER SWITCH REAR WINDOW DEFOGGER GRID RED WIRE RIGHT REAR FUSE BLOCK (NEAR RIGHT SIDE OF REAR SEAT, UNDER CARPET) SERIAL DATA WHT WIRE

12 8 11 HDLMP ON SIG SUPPLY VOLT SENSOR SIG 1317 5365 5365 1969 (BLUNT CUT) 19 23 25 18 FOG SW SIG HDLMP OFF SIG FLASH TO PASS SIGNAL HIGH BEAM SIG 5364 5364 1970 (BLUNT CUT) AUTO BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK DK DK GRN WIRE DK GRN/WHT WIRE ENGINE COMPT) FOG LAMP FUSE FOG LAMPS IND FOG RLY CTRL FOGLAMP RELAY FRONT FOG LAMP SWITCH FTP GMLAN SERIAL DATA GRN WIRE HI BEAM RELAY HIGH BEAM IND HOT AT ALL TIMES HVAC CONTROL MODULE (CENTER OF DASH, UNDER RADIO) INSTRUMENT PANEL LOGIC CLUSTER (IPC) SER DATA SERIAL DATA B+ LEFT FRONT FOG LAMP LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LOW BEAM/HID RELAY LOW REF LT GRN WIRE LT GRN/BLK WIRE LT HIGH BEAM FUSE LT LO BEAM FUSE (W/ HID) (W/O HID) NCA WIRE OFF PARK HEAD ORG/ WIRE PNK WIRE PNK/WHT WIRE PPL RIGHT FRONT FOG LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT HEADLAMP ASSEMBLY RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RT HI BEAM FUSE RT LO BEAM FUSE SERIAL DATA SUNLOAD/AMBIENT LIGHT SENSOR (AT TOP CENTER OF DASH) SUPPLY VOLT RLY CTRL TAN WIRE TAN/WHT WIRE TURN SIGNAL/MULTIFUNCTION SWITCH) UNDERHOOD FUSE BLOCK (AT RIGHT FRONT OF W/ HID W/O HID WHT WIRE YEL WIRE