Terminal Assignment
Terminal Assignment of Control Unit
A 1 Unoccupied
A 2 Reference lead from speed sensor P 35 Ter."1"
A 3 Unoccupied
A 4 Unoccupied
A 5 Unoccupied
A 6 Unoccupied
A 7 Signal lead of intake manifold pressure sensor P 23
A 8 Signal lead of throttle valve potentiometer P 34
A 9 Unoccupied
A 10 AC relay
A 11 Ground lead of vacuum sensor P 23, coolant temperature sensor P 30 and intake manifold pressure sensor P 29
A 12 Control unit final stage ground K 57/K 91
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Terminal Assignment of Control Unit, Part 2
B 1 Permanent voltage supply for fault memory
B 2 Signal lead of odometer frequency sensor
B 3 Reference lead from speed sensor P 35 Ter. "2"
B 4 Fuel consumption signal for board computer / MID
B 5 Engine load status for AT
B 6 Control unit switched ground K 57/K 91 to fuel pump relay K 58 Ter. 85
B 7 Bidirectional data lead from ALDL plug Ter. "G"
B 8 Voltage supply of throttle valve potentiometer P 34 and of intake manifold pressure sensor P 23
B 9 Unoccupied
B 10 Ground of oxygen sensor, shielding of inductive pulse pick-up
B 11 Signal lead of oxygen sensor
B 12 Signal lead of coolant temperature sensor P 30
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Terminal Assignment of Control Unit, Part 3
C 1 Engine telltale switched ground H 30
C 2 Engine speed signal
C 3 EST-B signal to DIS module Ter. 4
C 4 Voltage supply of control unit K 57/K 91 Ter. 15
C 5 Lead to 2nd coil of servo motor M 66 Ter. "C"
C 6 Lead to 2nd coil of servo motor M 66 Ter. "D"
C 7 Unoccupied
C 8 Lead to 1st coil of servo motor M 66 Ter. "B"
C 9 Lead to 1st coil of servo motor M 66 Ter. "A"
C 10 Ground pulse of injector cyl. 1 + 2
C 11 Ground pulse of injector cyl. 3 + 4
C 12 Ground of injector cyl. 1 + 2
C 13 Ground of injector cyl. 3 + 4
C 14 Unoccupied
C 15 Unoccupied
C 16 Voltage supply of control unit K 57/K 91
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Terminal Assignment of Control Units, Part 4
D 1 Ground final stages
D 2 Ground of throttle valve potentiometer P 34 and of octane number plug X 15
D 3 Signal lead of intake air temperature sensor P 29
D 4 Unoccupied
D 5 AC switch
D 6 AC load signal
D 7 Torque control input
D 8 Diagnostic excitation lead from diagnostic plug X 13 Ter. "B"
D 9 P/N switch
D 10 EST signal to ignition final stage K 20 Ter. 4 for MHDI or
EST-A signal to DIS module Ter. 3
D 11 Octane number plug X 15
D 12 Unoccupied
D 13 Unoccupied
D 14 Unoccupied
D 15 Unoccupied
D 16 Unoccupied
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