Chevrolet Impala VIII (1999-2006) underhood junction block (bottom) (on front of right strut tower) Wiring diagrams

39 27 34 COMP CONTROL A/C PRESS SIGNAL 80 59 LOW REFERENCE SERIAL DATA A/C CMPR RELAY A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE (LOWER LEFT SIDE OF ENGINE, AT A/C COMPRESSOR) A/C REFRIGERANT PRESSURE SENSOR (ON LEFT SIDE OF ENGINE COMPT, ON LIQUID LINE) A/C RLY (CMPR) FUSE A/C RLY (COIL) FUSE BLK WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN NCA WIRE ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) RED/BLK WIRE UNDERHOOD JUNCTION BLOCK (BOTTOM) (ON FRONT OF RIGHT STRUT TOWER) UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER)

BLK WIRE BREAKOUT) DK BLU WIRE DK GRN WIRE ECT GND ECT SIG ENGINE CONTROLS SYSTEM FAN CONT 1 FUSE FAN CONT 1 RELAY FAN CONT 2 RELAY FAN CONT 2, 3 FUSE FAN CONT 3 RELAY GRY WIRE HIGH SPD HOT AT ALL TIMES LEFT COOLING FAN (FRONT OF ENGINE COMPT) LOW SPD LT BLU WIRE ORG/ WIRE ORG/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (IN AIR CLEANER BOX) RIGHT COOLING FAN (FRONT OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK (BOTTOM) (ON FRONT OF RIGHT STRUT TOWER) WHT WIRE YEL WIRE

ABOVE PARKING BRAKE LEVER) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH) BRN WIRE DRIVER OUTSIDE REARVIEW MIRROR GRN WIRE HOT AT ALL TIMES HOT IN ON A/C CRUISE FUSE HTD MIR FUSE HVAC CONTROL MODULE LEFT I/P JUNCTION BLOCK LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS PANEL) LOAD MANAGEMENT CONTROL LOGIC IGN REAR DEFOG RLY CTRL NCA WIRE ORG/ WIRE PASSENGER OUTSIDE REARVIEW MIRROR PNK WIRE RADIO ANTENNA MODULE (ON UPPER PORTION OF LEFT "C" PILLAR) REAR DEFOG CIRCUIT BREAKER REAR DEFOG RELAY REAR DEFOGGER MOMENTARY SWITCH REAR WINDOW REAR WINDOW DEFOGGER GRID RED WIRE RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) RT IP 3 FUSE UNDERHOOD JUNCTION BLOCK (BOTTOM) (ON FRONT OF RIGHT STRUT TOWER) WHT WIRE

1-2 SHIFT SOLENOID (1-2 SS) VALVE 2-3 SHIFT SOLENOID (2-3 SS) VALVE 3.4L 3.4L 3.8L 3.8L 3.4L A/C CMPR RELAY A/C RLY (COIL) FUSE AUTOMATIC TRANSAXLE BLK WIRE BODY CONTROL MODULE (BCM) DATA LINK CONNECTOR (DLC) DFI MDL FUSE DK GRN WIRE DR LK FUSE PWR MIR FUSE CLSTR/ BCM FUSE DRIVER HEATED SEAT RELAY (W/ HEATED SEAT) DRIVER SEAT DRIVER WINDOW SWITCH SUNROOF MODULE ENG DEVICES FUSE EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID FAN CONT 1 FUSE FAN CONT 1 RELAY FAN CONT 2, 3 FUSE FAN CONT 2 RELAY FAN CONT 3 RELAY FROM COOLING FANS FUSE (DIAGRAM 1 OF 5) FROM IGN RLY RELAY (DIAGRAM 1 OF 5) FROM LEFT I/P FUSE (DIAGRAM 1 OF 5) FRONT PASSENGER WINDOW SWITCH FUEL INJ FUSE FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 FUEL INJECTOR 6 HEAD- LAMP RELAY HEATED OXYGEN SENSOR IGNITION CONTROL MODULE (ICM) INSTRUMENT PANEL CLUSTER (IPC) BODY CONTROL MODULE (BCM) LEFT I/P JUNCTION BLOCK (LEFT SIDE OF DASH, BEHIND ACCESS LH HTD ST/BCM FUSE MASS AIR FLOW (MAF SENSOR) MONTE CARLO NCA WIRE ORG/ WIRE OUTSIDE REARVIEW MIRROR SWITCH BODY CONTROL MODULE (BCM) OXY SEN FUSE PANEL) PNK PNK FUEL INJECTOR 1 BREAKOUT, FUEL INJECTOR 2 BREAKOUT) WIRE PNK PNK WIRE PNK WIRE RED WIRE RETAINED ACCSRY POWER RELAY RETAINED ACCSRY PWR BRKR CIRCUIT BREAKER RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) SENSOR 1 SENSOR 2 TORQUE CONVERTER CLUTCH (TCC) SOLENOID VALVE TRANS SOL FUSE UNDERHOOD JUNCTION BLOCK (BOTTOM) (ON FRONT OF RIGHT STRUT TOWER) W/O SEO YEL WIRE