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Terminal Assignment of
Control Unit Plug
Ter. 1 Ignition
signal, ignition coil L 2 / Ter. 3
Ter. 2 Ground
for ignition final stages
Ter. 3 Ground
pulse, fuel pump relay K 44 / Ter. 85b
Ter. 4 Pulse,
idle speed adjuster M 33
Ter. 5 Ground
pulse, tank vent valve Y 34
Ter. 6 Unoccupied
Ter. 7 Signal
lead, hot film mass air flow meter
Ter. 8 Unoccupied
Ter. 9 Signal
lead, rear left wheel speed sensor
Ter. 10 Separate
ground for oxygen sensor P 32
Ter. 11 Signal
lead, knock sensor P 46
Ter. 1 Voltage
supply from throttle valve potentiometer P 34
Ter. 13 Diagnostic
excitation lead Ter. 6 in diagnostic plug X 13
Ter. 14 Ground
for injector final stages
Ter. 15 Unoccupied
Ter. 16 Ground
pulse for injector cylinder 3
Ter. 17 Ground
pulse for injector cylinder 1
Ter. 18 Voltage
supply for fault memory (permanent positive Ter. 30)
Ter. 19 Ground,
electronics
Ter. 20 Ignition
signal to ignition coil L 2 / Ter. 1
Ter. 21 Unoccupied
Ter. 22 Ground
pulse for engine telltale
Ter. 23 Ground
pulse for exhaust gas recirculation valve Y 18
Ter. 24 Ground,
final stages, tank vent valve, engine telltale,
idle
speed adjuster, fuel pump relay
Ter. 25 Ground
pulse, AC relay K 60
Ter. 26 Pulse,
idle speed adjuster M 33
Ter. 27 Voltage
supply, control unit Ter. 15
Ter. 28 Signal
lead, oxygen sensor P 32
Ter. 29 Unoccupied
Ter. 30 Ground,
intake air temperature sensor; engine coolant sensor; throttle valve
potentiometer; hot film mass air flow meter, knock sensor
Ter. 31 Unoccupied
Ter. 32 Unoccupied
Ter. 33 Unoccupied
Ter. 34 Ground
pulse for injector cylinder 2
Ter. 35 Ground
pulse for injector cylinder 4
Ter. 36 Unoccupied
Ter. 37 Voltage
supply of control unit from voltage supply relay K 43 / Ter. 87
Ter. 38 Unoccupied
Ter. 39 Unoccupied
Ter. 40 Input
signal, AC compressor
Ter . 41 Input,
AC standby switch
Ter. 42 Transmission
coding, MT ground
Ter. 43 Signal
lead, tachometer
Ter. 44 Signal
lead, intake air temperature sensor
Ter. 45 Signal
lead, engine coolant sensor
Ter. 46 Ground
pulse, injection system relay K 43 / Ter. 85
Ter. 47 Unoccupied
Ter. 48 Crankshaft
pulse pick - up (ground)
Ter. 49 Crankshaft
pulse pick - up (signal)
Ter. 50 Unoccupied
Ter. 51 Load
reduction ignition retard signal from transmission control unit Ter. 52
Unoccupied
Ter. 53 Signal
lead, throttle valve potentiometer P 34 / Ter. 3
Ter. 54 Output
signal, throttle valve potentiometer for transmission control unit
Ter. 55 Bidirectional
data lead in diagnostic plug XD / Ter. 7
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