Chevrolet Impala VIII (1999-2006) a/c refrigerant pressure sensor (on left side of engine compt, on liquid line) 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)

39 26 27 34 COMP CONTROL ECT SIGNAL A/C PRESS SIGNAL 59 5 6 13 80 CLASS 2 SERIAL HIGH SPEED LOW SPEED ECT GROUND LOW REFERENCE A/C CMPR RELAY A/C COMPRESSOR CLUTCH A/C REFRIGERANT PRESSURE SENSOR (ON LEFT SIDE OF ENGINE COMPT, ON LIQUID LINE) A/C REQUEST IND A/C REQUEST SIG A/C REQUEST SWITCH A/C RLY (CMPR) FUSE A/C RLY (COIL) FUSE BATTERY POSITIVE BLK WIRE BLK/WHT WIRE BLOWER MOTOR BLOWER MOTOR (ON RIGHT BOTTOM OF HEATER-A/C ASSEMBLY) BLOWER MOTOR CONTROL PROCESSOR (LOWER RIGHT SIDE OF DASH) BODY CONTROL MODULE (BEHIND LEFT SIDE OF DASH, ABOVE PARKING BRAKE LEVER) BREAKOUT) BREAKOUT) (3.8L (VIN K): LEFT REAR OF ENGINE, 6.5 CM FROM EGR VALVE BREAKOUT) BRN WIRE COMPUTER DATA LINES SYSTEM D TEMP CONTROL SWITCH DEFOG SWITCH DEFOGGER SYSTEM COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DR CTRL A DR CTRL B DR CTRL A DR CTRL B DOOR CTRL A DOOR CTRL B ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE FAN CONT 1 FUSE FAN CONT 1 RELAY FAN CONT 2 RELAY FAN CONT 2, 3 FUSE FAN CONT 3 RELAY GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ON HVAC BLOWER FUSE HVAC CLASS 2 SERIAL DATA HVAC CLASS 2 SERIAL DATA BATTERY ILLUM LEFT AIR TEMPERATURE ACTUATOR (ON LEFT SIDE OF HEATER- A/C ASSEMBLY) LEFT COOLING FAN (FRONT OF ENGINE COMPT) LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MODE ACTUATOR (LOWER RIGHT SIDE OF DASH) MODE SWITCH NCA WIRE ORG/ WIRE ORG/BLK WIRE OUT SIDE AIR IND OUT SIDE AIR SWITCH P TEMP CONTROL SWITCH PNK IGN 3 VOLT GROUND WIRE PNK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL REAR DEFOG RLY CTRL RECIRCULATION ACTUATOR RECIRCULATION IND RECIRCULATION SWITCH RED WIRE RED/BLK WIRE RIGHT AIR TEMPERATURE ACTUATOR (ON RIGHT SIDE OF HEATER- A/C ASSEMBLY) RIGHT COOLING FAN (FRONT OF ENGINE COMPT) S121 (3.4L (VIN E)) (FUEL INJECTOR JUMPER SPEED CTRL SPEED CTRL DOOR CTRL POSITION SIG STARTER SUPPLY VOLTAGE TAN WIRE UNDERHOOD JUNCTION BLOCK (TOP) (ON FRONT OF RIGHT STRUT TOWER) VOLTAGE WHT WIRE WHT/BLK WIRE YEL WIRE