Honda Ridgeline I (2004-2009) climate control unit Wiring diagrams

A/C PRESSURE SWITCH (AT RIGHT SIDE OF ENGINE COMPARTMENT) AC-SI AC-CK AC-SO FRESH RECIRC A/C PRES SW B-CAN AC-SO AC-CK AC-SI AMD-P BLK WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE CLIMATE CONTROL UNIT COMPUTER DATA LINES SYSTEM CONTROL BLOCK DRIVER'S AIR MIX CONTROL MOTOR (UNDER MIDDLE OF DASH) EVAPORATOR TEMPERATURE SENSOR (UNDER MIDDLE OF DASH) FRONT PASSENGER'S AIR MIX CONTROL MOTOR (UNDER RIGHT SIDE OF DASH) FRS GRILLE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE IN-CAR TEMPERATURE SENSOR (LOWER LEFT LT BLU WIRE LT GRN WIRE M-COOL M-DEF M-HOT M-VENT MODE 1 MODE 2 MODE 3 NAVIGATION UNIT (UNDER DRIVER'S SEAT) ORG/ WIRE OUTSIDE AIR TEMPERATURE SENSOR (BEHIND FRONT PNK WIRE PNK/BLK WIRE PNK/BLU WIRE REC RECIRCULATION CONTROL MOTOR (BEHIND GLOVE BOX) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RELAY CONTROL MODULE S-COM SIDE OF DASH) SUNLIGHT SENSOR (MIDDLE OF DASH) UNDER-HOOD FUSE/RELAY BOX (RIGHT REAR OF ENGINE COMPARTMENT) WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/RED WIRE

12 33 15 CAN-L CAN-H DIAG-K 2 3 CAN L CAN H 2 4 CAN-L CAN-H B-CAN BLK WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/YEL WIRE CAN L CAN-H CAN-H CAN-L K-LINE SCS WEN CAN-L CAN-H B-CAN CAN-L CAN-H K-LINE CLIMATE CONTROL UNIT COMBINATION SWITCH CONTROL UNIT WIPER/WASHER SWITCH CONTROL BLOCK DATA LINK CONNECTOR (LOWER LEFT SIDE OF DASH) DIAG DOOR MULTIPLEX CONTROL UNIT FUSE 8 GAUGE CONTROL MODULE GRN WIRE GRY WIRE HEATER CONTROL UNIT- PANEL HOT AT ALL TIMES IMMOBILIZER CONTROL UNIT RECEIVER (IN STEERING COLUMN, ON IGNITION KEY CYLINDER K LINE LT BLU WIRE LT GRN WIRE MICU B-CAN MICU SERVICE CHECK CONNECTOR NAVIGATION SERVICE CHECK CONNECTOR (UNDER DRIVER'S SEAT) (IF EQUIPPED) NAVIGATION UNIT PCM (RIGHT REAR OF ENGINE COMPARTMENT) POWER WINDOW MASTER SWITCH RED WIRE RED/WHT WIRE RELAY CONTROL MODULE RT, LX SCS SCS KL SIDE OF DASH) SRS UNIT (BEHIND LOWER CENTER OF DASH) STEERING ANGLE SENSOR (IN STEERING COLUMN) TPMS RECEIVER UNIT (UNDER LEFT UNDER-DASH FUSE/RELAY BOX CHK (AT LEFT KICK PANEL) UNDER-HOOD FUSE/RELAY BOX (AT RIGHT REAR OF ENGINE COMPARTMENT) VSA MODULATOR CONTROL UNIT (LEFT SIDE OF ENGINE COMPARTMENT) VTM-4 CONTROL UNIT (BEHIND RIGHT KICK PANEL) WHT WIRE WHT/GRN WIRE YAW RATE-LATERAL ACCELERATION SENSOR (UNDER CENTER CONSOLE) YEL WIRE

A/C CONDENSER FAN RELAY A/C DIODE ASSEMBLY (BEHIND RIGHT SIDE OF DASH) A/C PRESSURE A/C PRESSURE SWITCH AC CONDENSER FAN MOTOR (FRONT MIDDLE OF ENGINE COMPARTMENT) AUXILIARY UNDER-HOOD RELAY BOX (RIGHT REAR OF ENGINE COMPARTMENT) B-CAN BLK WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRN/YEL WIRE CAN L CAN-H CLIMATE CONTROL UNIT COMPUTER DATA LINES SYSTEM CONTROL BLOCK FAN CONTROL RELAY FUSE 19 FUSE 20 FUSE 23 FUSE 30 GRN WIRE GRN/RED WIRE GRN/YEL WIRE HEATER CONTROL UNIT- PANEL HIGH FAN CONTROL HOT AT ALL TIMES HOT IN ON LOW FAN CONTROL MAIN RELAY 1 MICU PCM (RIGHT REAR OF ENGINE COMPARTMENT) RADIATOR FAN MOTOR (FRONT MIDDLE OF ENGINE COMPARTMENT) RADIATOR FAN RELAY RED WIRE RED/GRN WIRE RED/YEL WIRE RELAY CONTROL RELAY CONTROL MODULE RTX, RT, LX SENSOR GROUND SENSOR INPUT SWITCH (AT RIGHT SIDE OF ENGINE COMPARTMENT) UNDER-DASH FUSE/RELAY BOX (AT LEFT KICK PANEL) UNDER-HOOD FUSE/RELAY BOX (RIGHT REAR OF ENGINE COMPARTMENT) WHT WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE YEL/WHT WIRE

BLK WIRE BLOWER POWER TRANSISTOR BRAKE LIGHT NOISE CONDENSER CARGO AREA LIGHT SWITCH CLIMATE CONTROL UNIT CRUISE CONTROL MAIN SWITCH DLC DRIVER'S ACCESSORY POWER SOCKET DRIVER'S SEAT HEATER SWITCH DRL RELAY SWITCH FRONT ACCESSORY POWER SOCKET RELAY FRONT PASSENGER'S ACCESSORY POWER SOCKET FRONT PASSENGER'S DOOR LOCK KNOB SWITCH FRONT PASSENGER'S POWER WINDOW SWITCH DOOR LOCK SWITCH FRONT PASSENGER'S SEAT HEATER SWITCH GAUGE CONTROL MODULE GAUGE CONTROL UNIT GLOVE BOX LIGHT HEATED WINDSHIELD WIPER AREA DEFOGGER HEATER CONTROL UNIT- PANEL IGNITION KEY SWITCH/ KEY LIGHT INTERIOR LIGHT SWITCH LOW BEAM CUT RELAY MES CONNECTOR MOONROOF PARK PIN SWITCH SWITCH (EX-L, RTL) NAVIGATON DISPLAY UNIT RIGHT POWER MIRROR RTL, EX-L, LX RTS, RTL EX-L, LX RTX RTX, EX-L RTX, RT, LX SELECT/ RESET SWITCH TPMS CONTROL UNIT TRAILER LIGHTING RELAY 1 (RTX) TRAILER LIGHTING RELAY 2 TRAILER LIGHTING CONTROL UNIT UNDER-DASH FUSE/RELAY BOX (AT LEFT KICK PANEL) VSA OFF SWITCH

AIR CONDITIONING SYSTEM B-CAN BLK WIRE BLK/YEL WIRE BLU WIRE CLIMATE CONTROL UNIT CONTROL BLOCK FR DEF SW FUSE 14 FUSE 2 (NOT USED) FUSE 30 GRN/BLK WIRE HEATED WINDSHIELD AREA DEFOGGER HEATED WINDSHIELD WIPER AREA RELAY HEATER CONTROL UNIT- PANEL HOT AT ALL TIMES HOT IN ON LT BLU WIRE MICU OUTSIDE AIR TEMPER- ATURE SENSOR (BEHIND FRONT GRILLE) OUTSIDE GND AIR OUTSIDE GND AIR S-COM PNK WIRE RED/BLK WIRE RELAY CONTROL MODULE RTX, RT, LX S-COM UNDER-DASH FUSE/RELAY BOX (AT LEFT KICK PANEL) UNDER-HOOD FUSE/RELAY BOX (AT RIGHT REAR OF ENGINE COMPARTMENT)

AUDIO UNIT BLK WIRE BLU WIRE CABLE REEL CARGO AREA LIGHT SWITCH CLIMATE CONTROL UNIT COMBINATION LIGHT SWITCH CONSOLE BOX LIGHT 2 CRUISE CONTROL MAIN SWITCH CRUISE CONTROL SET/RESUME CANCEL SWITCH DASH LIGHTS BRIGHTNESS CONTROLLER DRIVER'S SEAT HEATER SWITCH (IF EQUIPPED) FRONT PASSENGER'S SEAT HEATER SWITCH (IF EQUIPPED) GLOVE BOX LIGHT HAZARD WARNING SWITCH HEATER CONTROL UNIT- PANEL INTERIOR LIGHT SWITCH MOON- ROOF SWITCH NAVI- GATION DISPLAY UNIT NAVIGATION UNIT RADIO REMOTE SWITCH (IF EQUIPPED) RED WIRE RED/BLK WIRE RED/BLU WIRE ROOF CONSOLE RTX, RT, LX SELECT/ RESET SWITCH STEERING WHEEL) TRAILER LIGHTING CONTROL UNIT CONNECTOR VOICE CONTROL SWITCH (IF EQUIPPED) VSA OFF SWITCH VTM-4 LOCK SWITCH YEL WIRE

1 2 3 4 5 6 7 8 B+ 1 2 3 4 5 6 7 CAMERA VCC CAMERA GND 1 2 GPS GPS SH AC-CK AC-SI AC-SO AMPLI- FIER ATP-R BACK LT- BACK SWITCH BLK WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE CABLE REEL CAM ADPT CAM GND CAM SH CAM VCC CLIMATE CONTROL UNIT ECU BUS + ECU BUS SH ECU BUS (+) B SIG C SIG GND BACK LT VSP DIAG + DIAG - GPS ANTENNA GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE INSTRUMENT CLUSTER SYSTEM LT BLU WIRE LT GRN WIRE NAVIGATION SERVICE CHECK CONNECTOR 1 2 NAVIGATION UNIT (UNDER DRIVER'S SEAT) PCM (RIGHT REAR OF ENGINE COMPARTMENT) PNK ECU BUS(-) ECU BUS SH STRG SW RG SH RG GND MIC SH MIC GND WIRE PNK WIRE PPL PPL ECU BUS (-) RD SW REARVIEW CAMERA (RIGHT SIDE OF TAILGATE) RED WIRE RED/BLK WIRE RED/WHT WIRE RG L + MIC SIG + ROOF CONSOLE MICROPHONE SIG GND AC-SO AC-CK STEERING WHEEL) TALK SWITCH TRANS- MISSION RANGE SWITCH (ON TRANS- MISSION HOUSING) UNDER-DASH FUSE/RELAY BOX (AT LEFT KICK PANEL) MICU VID GND VIDEO GND VIDEO CAMERA SH CAMERA ADPT VIDEO+ VOICE CONTROL SWITCH VSSOUT WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 B+ 1 2 3 4 5 6 7 CAMERA VCC CAMERA GND 1 2 GPS GPS SH AC-CK AC-SI AC-SO AMPLI- FIER ATP-R BACK LT- BACK SWITCH BLK WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE CABLE REEL CAM ADPT CAM GND CAM SH CAM VCC CLIMATE CONTROL UNIT ECU BUS + ECU BUS SH ECU BUS (+) B SIG C SIG GND BACK LT VSP DIAG + DIAG - GPS ANTENNA GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE INSTRUMENT CLUSTER SYSTEM LT BLU WIRE LT GRN WIRE NAVIGATION SERVICE CHECK CONNECTOR 1 2 NAVIGATION UNIT (UNDER DRIVER'S SEAT) PCM (RIGHT REAR OF ENGINE COMPARTMENT) PNK ECU BUS(-) ECU BUS SH STRG SW RG SH RG GND MIC SH MIC GND WIRE PNK WIRE PPL PPL ECU BUS (-) RD SW REARVIEW CAMERA (RIGHT SIDE OF TAILGATE) RED WIRE RED/BLK WIRE RED/WHT WIRE RG L + MIC SIG + ROOF CONSOLE MICROPHONE SIG GND AC-SO AC-CK STEERING WHEEL) TALK SWITCH TRANS- MISSION RANGE SWITCH (ON TRANS- MISSION HOUSING) UNDER-DASH FUSE/RELAY BOX (AT LEFT KICK PANEL) MICU VID GND VIDEO GND VIDEO CAMERA SH CAMERA ADPT VIDEO+ VOICE CONTROL SWITCH VSSOUT WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 B+ 1 2 3 4 5 6 7 CAMERA VCC CAMERA GND 1 2 GPS GPS SH AC-CK AC-SI AC-SO AMPLI- FIER ATP-R BACK LT- BACK SWITCH BLK WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE CABLE REEL CAM ADPT CAM GND CAM SH CAM VCC CLIMATE CONTROL UNIT ECU BUS + ECU BUS SH ECU BUS (+) B SIG C SIG SIG GND AC-SO AC-CK GND BACK LT VSP DIAG + DIAG - GPS ANTENNA GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE INSTRUMENT CLUSTER SYSTEM LT BLU WIRE LT GRN WIRE NAVIGATION SERVICE CHECK CONNECTOR 1 2 NAVIGATION UNIT (UNDER DRIVER'S SEAT) PCM (RIGHT REAR OF ENGINE COMPARTMENT) PNK ECU BUS(-) ECU BUS SH STRG SW RG SH RG GND MIC SH MIC GND WIRE PNK WIRE PPL PPL ECU BUS (-) RD SW REARVIEW CAMERA (RIGHT SIDE OF TAILGATE) RED WIRE RED/BLK WIRE RED/WHT WIRE RG L + MIC SIG + ROOF CONSOLE MICROPHONE STEERING WHEEL) TALK SWITCH TRANS- MISSION RANGE SWITCH (ON TRANS- MISSION HOUSING) UNDER-DASH FUSE/RELAY BOX (AT LEFT KICK PANEL) MICU VID GND VIDEO GND VIDEO CAMERA SH CAMERA ADPT VIDEO+ VOICE CONTROL SWITCH VSSOUT WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE