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Terminal Assignment and
Circuit Diagram
Terminal
Assignment, 25-pin Wiring Harness Plug for Control Unit
Ter. 1 Unoccupied
Ter. 2 Unoccupied
Ter. 3 Unoccupied
Ter. 4 Ignition signal to ignition trigger box
K 20/Ter. 4
Ter. 5 Ground, ignition trogger box shield
Ter. 6 Hall sensor signal Y 10/Ter. 2
Ter. 7 Hall sensor voltage supply Y 10/Ter. 1
Ter. 8 Unoccupied
Ter. 9 Voltage supply, control unit K 84/Ter.
15
Ter. 10 Unoccupied
*Ter. 11 Engine engaging signal from the
electronically controlled 4-speed automatic
Ter. 12 Permanent voltage Ter. 30, fault memory
in control unit
Ter. 13 Hall sensor ground Y 10/Ter. 3
Ter.
14 Unoccupied
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Ter. 15 Engine speed signal (Tn signal), output
signal
Ter. 16 Ground synchronisation of engine telltale
H 30 in instrument
Ter.
17 Unoccupied
Ter.
18 Unoccupied
Ter.
19 Diagnostic plug serial data lead X 13/Ter. G
Ter.
20 Engine electronics excitation lead, diagnostic plug X 13/Ter. B
Ter.
21 Coding plug, octane number adjustment
Ter.
22 Signal lead to pressure sensor, intake manifold P 23/Ter. B
Ter.
23 Oil temperature sensor signal lead P 24
Ter.
24 Basic adjustment coding plug signal lead X 10
Ter.
25 Intake manifold pressure sensor voltage supply P 23
* only in connection with
electronic 4-speed AT AF 14/20
