1978-1994 Porsche 928 (S S4 GT GTS) Workshop Service Repair Manual

Wiring 97 Current Flow Diagram,Type 928 USA, Symbols and Explanation I l Current Flow Diagram 97-l

Current Flow Diagram,Type 928 USA, Symbols and Explanation Wiring 97 Fuse 8 A (red: 16 A, blue: 25 A) _ I t i--- T Switch, open 0 Resistor, heating element - Fuse Irelay board Switch, closed 0 Fuse C- $ TfT Sequence switch Q Bulb t-4 t T Tip switch t- Q Potentiometer continuation I I!! of wire I Y y Wire connection on fuse/relay board (e. g. plug S, terminal 7) i l--- Switch (tip switch), T manually operated t Switch (tip switch), Q-- T mechanically operated, e. g. limit switch P Resistor sender unit (e. 9. part VIII, current track 6) i Inductance, coil Et4 Temperature switch N Horn B{ Pressure switch Kl Loudspeaker t Tz - wire Connector (e. g. seven-pole, terminal 2) Temperature switch (thermal overload protection) m-4 Float switch Motor Antenna r'-'-': I ! Equipment border line I L.-.-. j i-.-.-.-l Solid-state circuit No actual wire, but internal connection or connection between equipment housing and ground w Generator t Spark gap t Meter, indicator 0 Diode -I+ Battery cell Wire connection, permanent --- + Solenoid Relay Wire connection, detachable I I I I I I I Shielded wire x+ --_ Solenoid valve Current track - number ,4 ,5 Printed in Gerrnany Current Flow Diagram 97-l

Current Flow Diagram, Type 928 USA, Part I Description A - Battery B - Starter C - Generator C’ -Regulator F*6 - Thermo-switch for cold start valve G” -Fuel pump 1 G23 -Fuel pump 2 J’7 - Fuel pump relay J@J - (Starter blocking relay, cars with automatic transmission only) connection between terminals 30 and 87 K* - Generator charge indicator light N - Ignition coil NC - Resistor Ng -Warm-up regulator N’7 - Cold start valve N*’ -Supplementary air valve N4’ -Transistor ignition unit 0 - Distributor P - Spark plug connector Q -Spark plug S*2 -Fuse Tld -Wire connector in spare wheel well T2a - Wire connector, two-pole, behind accelerator pedal T4’ - Wire connector, four-pole, in spare wheel well T14 - Wire connector, fourteen-pole in engine compartment, near ignition unit Current track 7 8,9, 10 6 6 12 20 21 19,20 9, 10 2 15 13 22 11 23 17,19 13... 18 15 15 20 25 24 10,25,26 5,9,10,22

Wiring 97 Current Flow Diagram, Type 928 USA, Part I Current Flow Diagram 97-3

Current Flow Diagram, Type 928 USA, Part I Wiring 97 L- ._.- 7?--f31d 3 1 1 r-I , I j”i I1 II s 22 s I I i rs 1 T,: * I Td 01 r K2i I.- Tl!i L a I-- - - 1 /I !, i J i. N17 r.- I B i.- l==== a v ,‘T b j r 0f f r- -7 ‘I ; F I i !I _i 1 i i ’ G6 l- i ( i GZ II L j i. -.-_-. j P D. I A - -_ . ! 35 5 I 12 3 4. 56 7 8 9 10 11 12 13 14 15 16 17 20 2-l 22 23 24 25 26 ‘v Power supply, starter ~ Ignition Fuel pumps + Printed in Germanv Current Flow Diagram 97-3

Current Flow Diagram, Type 928 USA, Part II Description. Current track D - Ignition/starter switch E’ - Light switch E4 - Dimmer/headlight flasher switch El9 - Parking light switch J - Headlight dimmer relay L’ - Left headlight L* - Right headlight L9 - Light switch illumination L** - Left fog light L*3 -Right fog light M’ -Left parking light M3 - Right parking light Ml’ - Front side marker light s* - Fuse S*4 -Fuse to - Fuse S*9 -Fuse T* -Wire connector, two pole a - behind accelerator pedal q - near left fog light r - near right fog light T4 -Wire connector, four pole g - near left parking light h - near right parking light 1 . . . 12 5 12 13;;4 5 15 17,18 19,20 12 23 26 22 25 21,24 13 17 18,19,20,22 25 3 22 26 21,22 24,25

Wiring 97 Current Flow Diagram, Type 928 USA, Part II Current Flow Diagram 97-5

Current Flow Diagram, Type 928 USA, Part II Wiring 97 m S25 s27 jkza 12 “M4 SM5 ;I-41 I I I I =m 1.5 ma2 !-’ - ‘1 1 i t i. -j Q5 -Lo I,5 0.5 i-L E4 66a r’-‘-‘-- ssb 1 ik+---l L- i i-. 1 -.-. ; i 30 x T 4n T2r 5 9 ! ‘i i j i t r 4n T& w 1 r T4h 0.75 r’ Pq p! i 1 i ii i. .j i. 0.75 L T4n 1 ..6br-., ! .-.-. Li I I I I I I I I ‘P H L Y------A 56 r .-.--.-.-. .-.--.-.-. t.0 t.0 1.00,” 1.00,” 2.5 2.5 i” i 1 i. i ( i 1 23 4 5 6 7 89 10 11 12 13 14 15 16 17 18 19 20 21 22 23 -* 24 25 26 Ignition/starter switch, light switch-- Headlight, parking light ~ Printed in Germany Current Flow Diagram 97-5

Current Flow Diagram, Type 928 USA, Part III Description E* -Turn signal switch E3 - Emergency flasher switch E*3 -Fog light switch J’ -Hazard/turn signal flasher J5 - Fog light relay J*5 - Headlight relay J36 - Concealing headlight relay J73 - Headlight control relay J74 - Headlight safety relay K5 -Turn signal indicator light K6 - Hazard flasher indicator light Kl7 -Fog light indicator light L29 - Engine compartment light M5 - Left front turn signal M6 - Left rear turn signal S’ - Fuse s3 - Fuse S4 - Fuse 519 -Fuse S30 - Fuse S3’ - Fuse S34 - Fuse T* - Wire connector, two-pole c - behind rear bumper s - near left front turn signal 77a -Wire connector, seven-pole behind luggage compartment covering, left Vs - Concealing headlight motor X - License plate light Current track 22 lg...25 1 24 1 10,ll 13 12 15 22 18 1 9 14 17 1 7 3 13 17 18 6 7 14 17 lo... 13 7,8

Wiring 97 Current Flow Diagram, Type 928 USA, Part Ill Current Flow Diagram 97-7

1978-1994 Porsche 928 (S S4 GT GTS) Workshop Service Repair Manual

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