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.
2012 Volkswagen CC (357) L4-2.0L Turbo (CCTA)FACTORY OEM SERVICE PROCEDURE
Climatronic Control Module J255 Pin Assignment, Climatic Passat from MY 06
Climatronic Control Module J255 Pin Assignment, Climatic Passat from MY 06
Special tools, testers and auxiliary items required
• Test Box (V.A.G 1598/42)
• Adapter Cable (V.A.G 1598/47)
• Template (V.A.G 1598/47-2)
20-pin Connector, T20b
3 Center Outlet Temperature Sensor (G191)
5 High Pressure Sensor (G65)
7 CAN bus Low
8 CAN bus High
12 Right seat heater (optional)
13 Left seat heater (optional)
15 Terminal 75 seat heater (optional)
16 A/C Compressor Regulator Valve (N280)
18 Center Outlet Temperature Sensor (G191)
19 Terminal 30A
20 Terminal 31
16-pin Harness Connector, T16j
1 Temperature Regulator Door Motor (V68) , warm
2 Evaporator Temperature Sensor (G308)
4 Footwell Outlet Temperature Sensor (G192)
5 Left Temperature Door Potentiometer/Actuator (G220)
7 + 5 V for Left Temperature Regulator Door Motor Position Sensor (G220)
8 Ground for the Footwell Vent Temperature Sensor (G192) , the Evaporator Temperature Sensor (G308) and the Left Temperature Door Potentiometer/Actuator (G220)
9 Recirculation Door Motor (V113) , open
10 Recirculation Door Motor (V113) , close
11 Temperature Regulator Door Motor (V68) , cold
5-pin harness connector T5r
1 3rd Blower Speed
2 2nd Blower Speed
3 1st Blower speed
4 4th Blower Speed
5 Terminal X
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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