Volkswagen Heater
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General Information
Operating Voltage and Conditions
280VDC...450VDC [1]
Pinout
HV connector HVA 280 KEY_E from TE
- +HV near to the body,
- -HV far from the body
LV Connector 1J0973714
- Pin 1 is permanent 12V
- Pin 2 is GND
- Pin 4 is LIN
LIN Bus Communication
| ID | Description | Length | Checksum Type | Byte 0 | Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 28 | Control, every 50ms | 2 | ?? | Power | Last bit: Start/Stop | ||||||
| 48 | Feedback | 8 | ?? | Power:
13 = 770W 26 = 1540W |
?? | ?? | ?? | ?? | ?? | Temperature in | Temperature out |
Part Numbers
VW heater P/N are:
- 3Q0963231A
- 3Q0963231C
- 3Q0963231E
HV cable P/N is 3Q0971475 or 5Q0971475.
LV connector looks like it is Webasto 1J0973714 8P type.