VW T4 Immobilizer 2.5L Benzil AET / TDI ACV

TDI 2.5L 75KW ACV year 1997

  • 6PIN! unit Siemens 5WK4 678 - 1H0 953 257 B / 1H0953257B
  • coil Siemens 5WK4 768 1H0 953 254 E/ 1H0953254E

Immo unit Pinout

pin positions
(123|
(456|

pin wire color type note
T6/1 black 12V+ 15 - ignition on
T6/2 grey/white fuel shut-off valve unit on the Bosch fuel pump
T6/3 grey/white KLINE diag port
T6/4 brown 12V- ground
T6/6 brown 12V- ground

Benzil 2.5L 85KW AET year 1999 (Simos)

  • 8PIN! unit Siemens 5WK4 7740 - 6H0 953 257 A / 6H0953257A
  • coil Siemens 6H0 953 254 / 6H0953254

Immo unit Pinout

pin positions

|2468|
|1357|
 |  |
pin wire color type note
T6/1 red 12V+ terminal 30 always on
T6/2 black 12V+ terminal 15 - ignition on
T6/4 brown 12V- ground
T6/5 brown 12V- ground
T6/8 grey/white KLINE diag port