Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA2006RIDGELINE RTLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 11 (HEATING/AIR CONDITIONING)SYSTEM DESCRIPTIONHEATER CONTROL PANEL INPUTS AND OUTPUTS
2006 Honda Ridgeline RTL
Heater Control Panel Inputs and Outputs
2006 Honda Ridgeline RTLSECTION Heater Control Panel Inputs and Outputs
WARNING: This page is about a different car, the 2008 Honda Pilot, 2007 Honda Pilot, and 2006 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
HEATER CONTROL PANEL 30P CONNECTORS REFERENCE
| Cavity | Wire color | Signal | |
|---|---|---|---|
| 1 | BRN/YEL | REAR WINDOW DEFOGGER RELAY | OUTPUT |
| 3 | BLU/RED | BLOWER FEEDBACK | INPUT |
| 4 | ORN/BLK | POWER TRANSISTOR CONTROL | OUTPUT |
| 6 | GRN/WHT | RECIRCULATE | OUTPUT |
| 7 | GRN/RED | FRESH | OUTPUT |
| 8 | BLU/BLK | MODE DEF | OUTPUT |
| 9 | BLU/ORN | MODE VENT | OUTPUT |
| 10 | WHT | AIR MIX COOL | OUTPUT |
| 11 | RED/YEL | AIR MIX HOT | OUTPUT |
| 13 | BLK/YEL | IG2 (Power) | INPUT |
| 14 | RED/BLK | TAILLIGHTS RELAY | INPUT |
| 15 | BLU/YEL | MODE4 | INPUT |
| 16 | LT GRN/BLK | MODE3 | INPUT |
| 17 | GRN/YEL | MODE2 | INPUT |
| 18 | GRN/BLK | MODE1 | INPUT |
| 19 | BRN | EVAPORATOR TEMPERATURE SENSOR | INPUT |
| 21 | PNK/BLK | AIR MIX POTENTIAL | INPUT |
| 23 | RED/ORN | A/C PRESSURE SWITCH | OUTPUT |
| 25 | GRY | AIR MIX POTENTIAL +5V | OUTPUT |
| 27 | YEL/GRN | SENSOR COMMON GROUND | OUTPUT |
| 29 | BLK | GROUND (G401) | INPUT |
| 30 | RED | MULTIPLEX CONTROL UNIT (DRIVER'S) | INPUT |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.