Volkswagen Heater
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General Information [1]
- Operating Voltage: 280VDC - 450VDC
- Power: 5kW (7kW "boost" between 350-450V)
- Control via LIN by integrated electronics
- Temperature control by integrated sensor
Pinout/Connectors
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HV connector: TE 4-2103177-5 (HVA 280 series - key "E")
- HV+ near to the body,
- HV- far from the body
LV connector: TE 1-1394416-1
- 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec: 28
Hex: 0x1C PID: 0x9C |
Control, every 50ms | 2 | ?? | Power
0-2530W scale: x10 |
Last bit: Start/Stop | ||||||
| Dec: 48
Hex: 0x30 PID: 0xF0 |
Feedback | 8 | ?? | Power:
13 = 770W 26 = 1540W |
?? | ?? | ?? | ?? | ?? | Temperature in | Temperature out |
VW Part Numbers
Heater:
- 3Q0 963 231 A
- 3Q0 963 231 C
- 3Q0 963 231 E
Cable assemblies:
- HV cable is 3Q0 971 475 or 5Q0 971 475
- LV cable appears to be 1J0 973 714