Cadillac CTS I (2002-2007) class 2 serial data Wiring diagrams

BLK WIRE BLK/WHT WIRE CLASS 2 SERIAL DATA DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DOOR OPEN ENGINE CONTROL MODULE (ECM) (3.6L (VIN 7): FRONT OF RIGHT VALVE COVER) FRONT PASSENGER DOOR LATCH ASSEMBLY FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) GROUND HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) IGN INSTRUMENT PANEL CLUSTER (IPC) LOGIC LT GRN WIRE ORG/BLK WIRE POWERTRAIN CONTROL MODULE PPL PPL 5.7L 2.8L/3.6L PPL CLASS 2 SERIAL DATA PPL CLASS 2 SERIAL DATA DOOR OPEN SW SIG PPL PPL PPL PPL 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 58 59 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 8 11 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL PPL 1 2 3 4 5 6 7 PPL PPL PPL 6 1 2 PPL PPL PPL PPL 25 24 23 26 RADIO REAR COMPARTMENT LID RELEASE ACTUATOR (CENTER OF REAR COMPARTMENT LID) RIGHT REAR FUSE BLOCK SECURITY INDICATOR TAN/WHT WIRE TRUNK AJAR SWITCH SIGNAL TRUNK RELEASE MOTOR SUPPLY VOLTAGE

BLK WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM COURTESY LAMP SWITCH COURTESY LPS ON SIGNAL DIM/ ALDL FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) CLASS 2 SERIAL DATA DRIVER DOOR OPEN SW SIG FRONT PASSENGER DOOR LATCH ASSEMBLY FRONT PASSENGER DOOR SW SIG GROUND GRY WIRE HOT AT ALL TIMES I/P LAMPS DIMMER SWITCH INSTRUMENT ILLUMINATION CIRCUIT LEFT COURTESY/READING LAMP LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LEFT REAR DOOR OPEN SW SIG LT BLU/BLK WIRE LT GRN WIRE OVERHEAD CONSOLE PNK/BLK WIRE PPL RED/WHT WIRE RIGHT COURTESY/READING LAMP RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR DOOR MODULE RIGHT REAR DOOR OPEN SW SIG TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

193 1807 COMPUTER DATA LINES SYSTEM PPL 4 8 628 607 LOW REFERENCE SUPPLY VOLTAGE 627 606 4 8 LOW REFERENCE SUPPLY VOLTAGE BLK WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM PPL CLASS 2 SERIAL DATA DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER OUTSIDE REARVIEW MIRROR FEED HEATED MIRROR ELEMENT FRONT PASSENGER DOOR MODULE (ON RIGHT FRONT DOOR, UNDER DOOR TRIM PANEL) GRY WIRE HOT AT ALL TIMES HOT IN RUN HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) NCA WIRE ORG/ WIRE PASSENGER OUTSIDE REARVIEW MIRROR FEED PPL REAR DEFOG FUSE REAR DEFOG RELAY REAR DEFOGGER INDICATOR REAR DEFOGGER SWITCH LOGIC REAR INTEGRATION MODULE (UNDER PACKAGE SHELF TRIM PANEL) REAR WINDOW DEFOGGER GRID (ON REAR WINDOW GLASS) RELAY CONTROL CLASS 2 SERIAL DATA RIGHT REAR FUSE BLOCK (BELOW RIGHT REAR SEAT) RTN RTN HEATED MIRROR ELEMENT WHT WIRE

BAS FUSE BAS RELAY BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CLASS 2 (DIM) LIGHTS ON IND CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK DK EARLY PRODUCTION LATE PRODUCTION FROM UNDERHOOD FUSE BLOCK (DIMMING HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) JOINT CONNECTOR LEFT FRONT MARKER LAMP LEFT REAR MARKER LAMP LEFT TAIL/ STOP LAMP LEFT REAR TURN SIGNAL LAMP LEFT TAIL LAMP LEFT TAIL LAMP ASSEMBLY LEFT TURN INDICATOR LEFT TURN SIG IND LAMP SUPPLY VOLTAGE LOGIC LT BLU WIRE LT BLU/WHT WIRE LT PARK FUSE (DIAGRAM 1 OF 2) MESSAGE CENTER TURN SIGNAL ON THEFT ATTEMPTED MESSAGE REQUEST NEAR RIGHT HEADLAMP) (ON RIGHT BODY RAIL, NEAR RIGHT HEADLAMP) ORG/ WIRE PPL PPL (IN FORWARD LAMP HARNESS, 40 CM FROM HORN ASSEMBLY) PPL EARLY PRODUCTION PPL LATE PPL PRODUCTION W/ HID PPL LT RADIO RED WIRE RIGHT FRONT MARKER LAMP RIGHT FRONT PARK LAMP RIGHT HEADLAMP (W/O AUTOMATIC HEADLAMPS CONTROL LEVELING SYSTEM) RIGHT REAR MARKER LAMP RIGHT REAR TURN SIGNAL LAMP RIGHT TAIL LAMP RIGHT TAIL LAMP ASSEMBLY RIGHT TAIL/ STOP LAMP RIGHT TURN INDICATOR GROUND RIGHT TURN SIG IND LAMP SUPPLY VOLTAGE RT PARK FUSE TRAILERING (NOT USED) W/ HID W/O HID WHT WIRE

6 SPD M/T OTHERS BLK WIRE BRN WIRE BRN/WHT WIRE CLASS 2 (DIM) CLASS 2 SERIAL DATA COMPARTMENT) COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE FLASH TO PASS SWITCH SIGNAL FOG LAMP FUSE FOG LAMP RELAY FOG LAMP RLY CTRL LO BEAM RLY CONTROL HI BEAM RLY CTRL COIL SPLY VOLT CTRL FRONT FOG LAMP IND FRONT FOG LAMP SWITCH GRY WIRE HEADLAMP RELAY CONTROL HI LOW HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START HVAC CONTROL MODULE (BEHIND CENTER OF DASH, BELOW RADIO) INSTRUMENT PANEL CLUSTER (IPC) LEFT FRONT FOG LAMP LEFT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY LOGIC LT BLU WIRE LT BLU/BLK WIRE M/T NCA WIRE ORG/ WIRE OTHERS 6 SPD M/T PARK HEAD HEAD OFF AUTO AUTO PARK OFF PNK WIRE PNK/WHT WIRE PPL PPL PPL RIGHT FRONT FOG LAMP RIGHT FRONT TURN SIGNAL/ FOG LAMP ASSEMBLY SUNLOAD SENSOR (TOP CENTER OF I/P, ON DEFROST GRILL) TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE WHT WIRE YEL WIRE

BATTERY BATTERY DOWN CONTROL UP CONTROL BATTERY GROUND BACKLIGHTS LAMPS CTRL GROUND BATTERY GROUND BACKLIGHTS LAMPS CTRL GROUND GROUND BLK WIRE BLK/WHT WIRE BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DOOR LOCKS SYSTEM DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRV WINDOW DOWN SIG DRV WINDOW EXPRESS SIG DRV WINDOW UP SIG FRONT PASSENGER DOWN SIG FRONT PASSENGER EXPRESS SIG FRONT PASSENGER UP SIG GROUND GRY/BLK WIRE LEFT REAR DOOR MODULE (UNDER DOOR TRIM PANEL) LEFT REAR WINDOW MOTOR LEFT REAR WINDOW SWITCH LOGIC LR WINDOW DOWN SIG LR WINDOW EXPRESS SIG LR WINDOW UP SIG LT GRN WIRE PPL PPL CLASS 2 SERIAL DATA UP SIGNAL EXPRESS SIGNAL DOWN SIGNAL RED/WHT WIRE RIGHT REAR WINDOW MOTOR RIGHT REAR WINDOW SWITCH RR WINDOW DOWN SIG RR WINDOW EXPRESS SIG RR WINDOW UP SIG UP CONTROL DOWN CONTROL BATTERY WHT WIRE WINDOW LOCK OUT YEL WIRE

11 3 PNK LOW REF DRIVER SIG WIRE 22 23 PPL PPL SERIAL DATA SERIAL DATA 8 11 PPL PPL AUDIO AMPLIFIER (LEFT SIDE OF TRUNK) LUXURY BASE AUTO HEAD BATTERY BLK WIRE BLK/WHT WIRE BRN/WHT WIRE CHECK TIRE PRESSURE, SERVICE MONITOR CLASS 2 (DIM) CLASS 2 (SDM) CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA DOOR AJAR SW SIGNAL LF DOOR SW SIG COMPUTER DATA LINES SYSTEM DIM/ALDL FUSE DOOR AJAR SIGNAL DOOR OPEN SIGNAL DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (ON LEFT DOOR, UNDER DOOR TRIM) DRIVER SEAT BELT SWITCH FASTEN SAFETY BELT INDICATOR GROUND GROUND BATTERY GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGNITION KEY ALARM SWITCH (ON STEERING COLUMN) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER CENTER CONSOLE) INSTRUMENT PANEL CLUSTER (IPC) KEY IN IGN SW SIG PARK LAMP ON SW SIG HEADLAMPS ON SIG KEYLESS ENTRY/ TIRE PRESSURE ANTENNA SIGNAL LIGHTS ON INDICATOR LOGIC LOW TIRE PRESSURE INDICATOR LOGIC LT GRN WIRE MESSAGE CENTER NCA WIRE PARK OFF PARK OFF AUTO HEAD PNK WIRE PPL PPL CLASS 2 SERIAL DATA PPL PPL 1807 1807 745 126 PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA RADIO RADIO ANTENNA MODULE (ABOVE HEADLINER, NEAR REAR WINDOW) RED/WHT WIRE RFA REAR WINDOW ANTENNA SERIAL DATA SERIAL DATA (-) SERIAL DATA (+) SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE TAN/WHT WIRE TURN SIGNAL/MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT OF ENGINE COMPT) VOLT CHECK FUSE WHT WIRE