Wiring Diagram VW JETTA 2008 - Fresh air blower switch - Air conditioning system and heating button - Fresh air flap switch - Ambient temperature switch - Fresh air blower series resistor with overheating fuse - Fresh air blower

| E9 | Fresh air blower switch |
| E85 | Air conditioning system and heating button |
| E114 | Fresh air flap switch |
| F38 | Ambient temperature switch |
| J220 | Motronic control unit |
| J361 | Simos control unit |
| N24 | Fresh air blower series resistor with overheating fuse |
| SC35 | Fuse 35 on fuse holder C |
| SC36 | Fuse 36 on fuse holder C |
| T6 | 6-pin connector |
| T6c | 6-pin connector |
| T10d | 10-pin connector |
| T17a | 17-pin connector |
| T80 | 80-pin connector |
| T121 | 121-pin connector |
| V2 | Fresh air blower |
| 162 | Earth connection, in blower motor wiring harness |
| B622 | Connection (windscreen wiper), in main wiring harness |
| L66 | Connection, in heater blower wiring harness |
| L77 | Connection, in fresh air blower wiring harness |
| * | According to equipment |
| *2 | From March 2010 |
| *3 | Only models with diesel engine |
Wiring Diagram VW JETTA 2008 - Air conditioning system and heating button - Radiator fan thermal switch - Radiator fan control unit - Two-way valve for fresh air and air recirculation flap - Radiator fan
| E85 | Air conditioning system and heating button |
| F18 | Radiator fan thermal switch |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| J361 | Simos control unit |
| N63 | Two-way valve for fresh air and air recirculation flap |
| SC38 | Fuse 38 on fuse holder C |
| T4z | 4-pin connector |
| T6c | 6-pin connector |
| T10b | 10-pin connector |
| T10w | 10-pin connector |
| T17a | 17-pin connector |
| T80 | 80-pin connector |
| T121 | 121-pin connector |
| V7 | Radiator fan |
| 162 | Earth connection, in blower motor wiring harness |
| 376 | Earth connection 11, in main wiring harness |
| 607 | Earth point, on left in plenum chamber |
| K20 | Positive connection 1 (30), in radiator fan wiring harness |
| K21 | Connection 1, in radiator fan wiring harness |
| * | According to equipment |
Wiring Diagram VW JETTA 2008 - Radiator fan control unit - Air conditioning system magnetic clutch
| G65 | High-pressure sender |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| J361 | Simos control unit |
| N25 | Air conditioning system magnetic clutch |
| SA3 | Fuse 3 in fuse holder A |
| SC19 | Fuse 19 on fuse holder C |
| SC42 | Fuse 42 on fuse holder C |
| T4z | 4-pin connector |
| T10c | 10-pin connector |
| T10f | 10-pin connector |
| T10w | 10-pin connector |
| T80 | 80-pin connector |
| T121 | 121-pin connector |
| 376 | Earth connection 11, in main wiring harness |
| L43 | Connection (radiator fan), in air conditioning system/radiator fan wiring harness |
| * | According to equipment |
Wiring Diagram VW JETTA 2008 - Radiator fan thermal switch - Radiator fan control unit - Air conditioning system magnetic clutch - Radiator fan
| F18 | Radiator fan thermal switch |
| J293 | Radiator fan control unit |
| N25 | Air conditioning system magnetic clutch |
| SC38 | Fuse 38 on fuse holder C |
| T4 | 4-pin connector |
| T4z | 4-pin connector |
| T10b | 10-pin connector |
| T10w | 10-pin connector |
| V7 | Radiator fan |
| 376 | Earth connection 11, in main wiring harness |
| K20 | Positive connection 1 (30), in radiator fan wiring harness |
| K21 | Connection 1, in radiator fan wiring harness |
| * | Only models with diesel engine |
Wiring Diagram VW JETTA 2008 - High-pressure switch for air conditioning system - Thermal switch for air conditioning system shut-off - Radiator fan control unit - Air conditioning system switch-off relay
| F23 | High-pressure switch for air conditioning system |
| F73 | Low-pressure switch for air conditioning system |
| F163 | Thermal switch for air conditioning system shut-off |
| J220 | Motronic control unit |
| J293 | Radiator fan control unit |
| J365 | Air conditioning system switch-off relay |
| SA3 | Fuse 3 in fuse holder A |
| SC9 | Fuse 9 on fuse holder C |
| T4z | 4-pin connector |
| T6c | 6-pin connector |
| T10d | 10-pin connector |
| T10w | 10-pin connector |
| T121 | 121-pin connector |
| 367 | Earth connection 2, in main wiring harness |
| 673 | Earth point 3, on front of left longitudinal member |
| L9 | Connection 1, in air conditioning system wiring harness |
| L10 | Connection 2, in air conditioning system wiring harness |
| L11 | Connection 3, in air conditioning system wiring harness |
| * | Only models with diesel engine |
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