Audi 80, Audi 90 Current Flow Diagram No.9

Audi 80 (2.0 litre fuel injection engine, 103 kW, 16 V,K-Motron ic, 4-cyl i nder)Engine code letters 6A

from June 1990

Position of relays:also see "Fitting Locations"Relay plate with fuse holder:

Auxiliary relay carrier:

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- Oil pressure warning control unit

- Radiatorfan 3rd stage relay

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tr - Bridgeconnectionwith manual gearbox/relaywithautomatic gearbox

- Fuelpump relay

- Radiatorfan relay

Fuse colours

30 A - green25 A- colourless (white)20 A- yel low15 A - b lue1 0 A - r e d5 A - l i g h t b r o w n

Edition 08.90000.5208.53.20

No.9l1 Gurrent Flow Diagram Audi 80, Audi 90

Battery, starter, alternator

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- Battery- Starter- Alternator- Voltage regulator- lgnition/starter switch* Connector single, grey, in engine compartment, left- Connector 10 pin, yellow, connector point in aux. relay carrier- Eafthing strap, engine - generator- Earth point, in battery box

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Edition 08.90000.5208.53.20

Audi 80, Audi 90 Current Flow Diagram No.9l2Electronic fuel injection, lambda probe

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E 17 - Starter inhibitor and reversing lights switchF 4 - Reversing light switchG 22 - Speedometer senderG 39 - Lambda probe, with heaterJ 204 - KE Motronic control unitJ 221 - Control unit for selector lever lockN 17 - Cold stad valveN 71 - ldling speed stabilization valveN 80 - Activated charcoalfilter system solenoid valve I

(pulsed)N 1 15 - Activated charcoal filter system solenoid valve 2

(cut-off valve)R - Connection for radioT 1a - Connector single, in engine compartment, rightT 1b - Connector single, white, behind dash panel, leftT t h - Connector single, yellow, behind dash panel, leftT 2a - Connector 2 pin, white, behind dash panel, leftT 2i - Connector 2 pin, white, behind dash panel, leftf 2ap - Connector 2 pin, brown, under dash panel (diag-

nosis plug)

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T 3a - Connector 3 pin, red, behind dash panel, leftT 5b - Connector 5 pin, in engine compartment, leftT 6d - Connector 6 pin, black, behind dash panelT 10 - Connector 10 pin, black, connector point in aux.

relay carrier219 - Heating for Lambda probe

@ - Eafih point, on intake manifold

@ - Earth point, behind dash panel, left

@ - Earth connection - 1 -, in front right wiring loom

@ - Earth connection, engine block, in front right wiringloom

@ - Positive (+) connection (15a), in front right wiringloom

@ - Posit ive (+) connection (15)via fuse 28 in front r ightwiring loom

* - only on vehicles with automatic gearbox** - only on vehicles with manualgearbox*** - only with preparation for radio installation

Edition 08.90000.5208.53.20

No.913 Current Flow Diagram Audi 80, Audi 90

Electronic fuel injection, knock control, fuel pump relay, fuel pump

Tlen

Wiring colours:

bl : bluebr : brownge = yellowgn = greengr = grey11 : purplero : redsw: blackws = white

G 4 - Firing point senderG O - F u e l p u m pG 61 - Knocksensor IG 66 - Knock sensor l lJ 2O4 - KE Motronic control unitf 2 - Connector 2 pin, under rear seat leftT 3e - Connector 3 pin, green, in engine compartment, rightT 3h - Connector 3 pin, blue, in engine compartment, rightT 3y - Connector 3 pin, black, in engine compartment, rightT 5 - Connector 5 pin, black, connector point in aux. relay carrier

@ - Earth point, luggage boot, left

@ - Earth connection, engine block, in front right wiring loom

@ - Positive (+) connection (15) via fuse 28 in front right wiring loom

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Edition 08.90000.5208.53.20

Audi 80, Audi 90 Current Flow Diagram No.914

Electronic fuel injection

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Wiring colours:

bl = bluebr = brownge : yellowgn : greengr = grey;1 = purple[O = ledsw : blackws = white

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F 60 - ldling switchF 81 - Fullthrottle switchG 19 - Potentiometer for air flow meterG 62 - Sender for coolant temperatureJ 2O4 - KE Motronic control unitN 73 - Differential pressure regulatorT 2c - Connector 2 pin, blue, under dash panel (diagnosis plug)T 2az - Connector 2 pin, black, in engine compartment, rightT 3d - Connector 3 pin, black, in engine compartment, rightT 5 - Connector 5 pin, black, connector point in aux. relay carrier

@ - Earth point, on intake manifold

@ - Earth connection, engine block, in front right wiring loom

@ - Positive (+) connection (15) via fuse 28 in front right wiring loom

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Edition 08.90000.5208.53.20

No.9l5 Current Flow Diagram Audi 80, Audi 90

Electronic fuel injection, ignition system

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Wiring colours:

bl = bluebr : brownge : yellowgn = greengr = grey1; : purplero = redsw = blackws = white

G 40 - Hal tsenderJ 2O4 - KE-Motronic control unitN - lgnition coilN 70 - Coilwith final output stage 1O - lgnition distributorP - Spark plug connectorO - Spark plugs527 - Fuse in additional fuse holder (engine system | - for electronic ignition system)S 28 - Fuse in additional fuse holder (engine system ll - for lambda control)

@ - Earth point, on intake manifold

@ - Earth connection, engine block, in front right wiring loom

@ - Positive (+) connection (15) via fuse 27 in front right wiring loom

@ - Positive (+) connection (15) via fuse 28 in front right wiring loom

Edition 08.90000.5208.53.20

Audi 80, Audi 90 Current Flow Diagram No. 916Visual and aco_ustic oil pressure warning

F 1 - Oil pressure switch (1.8 bar)F 22 - Oil pressure switch (0.3 ba|J 114 - Oil pressure warning control unitT 2b - Connector 2 pin, black, under dash panel (diagnosis plug)T 5 - Connector 5 pin, black, connector point in aux. relay carrierT 6d - Connector 6 pin, black, behind dash panelT 10 - Connector 10 pin, black, connector point in aux. relay carrier

@ - Earth connection - 1 -, in front right wiring loom

@ - Positive (+) connection (15) via tuse 27 in front right wiring loom

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Wiring colours:

bl : b luebr = brownge : yellowgn = greengr = grey11 : purple[O : Igdsw : blackws = white

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Edition 08.90000.5208.53.20

No.9l7 Current Flow Diagram Audi 80, Audi 90

Dash panel insert, coolant monitor, rev. counter

30

Wiring colours:

bl : bluebr = brownge = yellowgn = greengr : grey11 = purplero = redsw = blackws : white

E 15 - Heated rear window switchF 66 - Coolant shortage indicator switchF 76 - Electronic thermoswitchG 3 - Coolant temperature gaugeG5 -Rev.counterG21 - SpeedometerJ6 -Vol tagestabi l izerJ 140 - Switch unit for interior light delayK2 - Generator warning lampK 3 - Oil pressure warning lampK 28 - Warning lamp for coolant temperature/coolant

shortageT 1d - Connector single, white, behind dash panel, leftT 3 - Connector 3 pin, brown, behind dash panel, leftT 5a - Connector 5 pin, brown, connector point in aux.

relay carrierT 10 - Connector 10 pin, black, connector point in aux.

relay carrierT 26 - Connector 26 pin, yellow, dash panel insert

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- Connector 26 pin, blue, dash panel insert- Earth connection - 1 -, in dash panelwiring loom- Earth connection - 1 -, in front left wiring loom- Positive (+) connection (15a), in dash panel

wiring loom- only with interior light delay feature

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Edition 08.90000.5208.53.20

Audi 80, Audi 90 Gurrent Flow Diagram No. 9/8

Radiator fan

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F 18 - Radiator fan thermo switchF 54 - Radiatorfan thermo switchJ 26 - Radiator fan relayJ 135 - Relay for radiator fan 3rd stageN 39 - Series resistance for radiator fanV 7 - Radiatorfan

@ - Eadh point, in battery box

@ - Earth connection - 1 -, in front left wiring loom

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Edition 06.91000.5208.66.20

No. 9/9 Gurrent Flow Diagram Audi 80, Audi 90

Fan run-on

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Wiring colours:

bl : bluebr = brownge = yellowgn = greengr = grey;; = purplero = redsw = blackws = white

F 87 - Thermo switch for fan run-onJ 138 - Control unit for radiator fan run-onT 3 - Connector 3 pin, brown, behind dash panel, left

@ - Earth connection - 1 -, in front left wiring loom

@ - Earth connection - 1 -, in front right wiring loom

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Edition 06.91000.5208.66.20