Wire Connectors and Bulb Control Units
Fig. 19 - Wire Connector for Main Control Unit, 5000S:
5000S only
1 - Ignition switch, contact 50 2 - Oil pressure switch 1.8 bar (26 psi) 3 - Oil pressure switch 0.3 bar (4 psi) 4 - Sending unit for w/shield washer fluid level 5 - Sending unit for brake fluid level and hydraulic fluid level 6 - Sending unit for engine coolant level 7 - Fuse/relay panel, C15a 8 - Fuse/relay panel, 1La 9 - not connected 10 - not connected 11 - Display unit 6 point connection, terminal 5 and control lamp for w/shield washer fluid level 12 - Display unit 8 point connection, terminal 2 and control lamp for oil pressure warning light 13 - Display unit 6 point connection, terminal 3 and control lamp for brake light bulb 14 - Display unit 6 point connection, terminal 4 and control lamp for fuel warning light 15 - Display unit 6 point connection, terminal 1 and control lamp for brake fluid level, hydraulic fluid level 16 - Display unit 8 point connection, terminal 5 and control lamp for "Red Triangle" (positive connection) 17 - Display unit 8 point connection, terminal 7 and control lamp for "OK" symbol 18 - Display unit 8 point connection, terminal 4 and voltage supply 19 - Fuse/relay panel, connector F, terminal T and sending unit for fuel gauge 20 - to 6 point connector (T6f behind inst. panel), from T6f to T6a (green, behind inst. panel), from T6a to Alternator term 61 21 - to T6b (white, behind inst. panel), from T6b to T3b (left front strut), from T3b to brake pad wear indicator 22 - to T6b (white, behind inst. panel), from T6b to T3d (brown, behind inst. panel), from T3d to terminal KS of rear bulb control unit 23 - to T3d (brown, behind inst. panel) to terminal KB of rear bulb control unit 24 - Push button for Auto-Check-system 25 - to T6 (yellow, behind inst. panel) to hydraulic press. control switch 26 - not connected 27 - to ground connection, behind inst. panel 28 - Display unit 6 point connection, terminal 2 and control lamp for tail light ind. 29 - Display unit 8 point connection, terminal 1 and control lamp for battery voltage 30 - Display unit 6 point connection, terminal 6 and control lamp for coolant overheat indicator 31 - not connected 32 - Display unit 8 point connection, terminal 3 and control lamp for brake pad wear indicator 33 - to T6f (behind inst. panel), from T6f to Fuse/relay panel term. K1 34 - Display unit 8 point connection, terminal 6 and control lamp for "Red Triangle" (ground connection) 35 - Fuse/relay panel, J58
Fig. 20 - Wire Connector for Main Control Unit, 5000S Turbo, 5000S Quattro:
5000S turbo and 5000S quattro
1 - Ignition switch, contact 50 2 - Oil pressure switch 1.8 bar (26 psi) 3 - Oil pressure switch 0.3 bar (4 psi) 4 - Sending unit for w/shield washer 5 - Sending unit for brake fluid level and hydraulic fluid level 6 - Sending unit for engine coolant level and electronic thermoswitch 7 - Contact 15, voltage supply 8 - not connected 9 - not connected 10 - not connected 11 - Display unit 6 point connection, terminal 5 and control lamp for w/shield washer fluid level 12 - Display unit 8 point connection, terminal 2 and control lamp for oil pressure warning 13 - Display unit 6 point connection, terminal 3 and control lamp for brake light bulb 14 - Display unit 6 point connection, terminal 4 and control lamp for fuel reserve level 15 - Display unit 6 point connection, terminal 1 and control lamp for brake fluid level, hydraulic level 16 - Display unit 8 point connection, terminal 5 and control lamp for "Red Triangle" (positive connection) 17 - Display unit 8 point connection, terminal 7 and control lamp for "OK" symbol 18 - Display unit 8 point connection, terminal 4 and voltage supply 19 - to connector T6f (white, behind instrument panel) then to Fuse/relay panel FT 20 - to T12 (behind inst. panel) then to T6a (green, behind inst. panel) then to alternator D + 21 - to connector T9 (behind inst. panel) then to T3f (rear left shock) then to brake pad wear indicator 22 - to connector T9 (behind inst. panel) then to front lamp control unit terminal 9/K 23 - to connector T3d (behind inst. panel) then to rear bulb control unit terminal KB 24 - Push button for Auto-Check-system 25 - to connector T9 (behind inst. panel) then to hydraulic press. control sw. 26 - not connected 27 - to ground connection behind inst. panel 28 - Display unit 6 point connection, terminal 2 and control lamp for tail light indicator 29 - Display unit 8 point connection, terminal 1 and control lamp for battery voltage 30 - Display unit 6 point connection, terminal 6 and control lamp for coolant heat indicator 31 - not connected 32 - Display unit 8 point connection, terminal 3 and control lamp for brake pad wear indicator 33 - to connector T6 (yellow, behind inst. panel) then to idle stabilizer control unit 34 - Display unit 8 point connection, terminal 6 and control lamp for "Red Triangle" (ground connection) 35 - to light switch terminal 58
Fig. 21 - Rear bulb Control Unit, Terminals:
5000S
KB to T3d (brown, behind inst. panel) then to main control connector terminal 23 KS to T3d (brown, behind inst. panel) then to T6b (white, behind inst. panel) then to main control connector terminal 22 15 to T3d (brown, behind inst. panel) then to main control connector terminal 35 31 to ground 54 to T6c (brown, behind inst. panel) and then to brake light switch 58R to Fuse/relay panel H58R 58L to Fuse/relay panel H58L
5000S turbo, 5000S quattro
KB to T3d (behind inst. panel) then to main control unit terminal 23 KS to T3d (behind inst. panel) then to T9 (behind inst. panel) then to main control connector terminal 22 15 to T3d (behind inst. panel) then to seat belt warn. relay and to T1b (behind inst. panel) then to Fuse/ relay panel C15a 31 to ground 54 to T6b (brown, behind inst. panel) then to brake light switch 58R to right tail light and Fuse/relay panel H58R 58L to left tail light and Fuse/relay panel H58L
Fig. 22 - Rear Bulb Control Unit, Terminals:
5000S and 5000S turbo, 5000S quattro
54R to brake light, right side 54L to brake light, left side 58R1 to tail light, right side 58L1 to tail light, left side
Fig. 23 - Front Bulb Control Unit, Terminals:
5000S
K to T6b (white, behind inst. panel) then to main control unit terminal 22
56bR to Fuse/relay D56bR 56bL to Fuse/relay panel D56bL 56bR1 to low beam head lite and park lite, right 56bL1 to low beam head lite and park lite, left
5000S turbo, 5000S quattro
K to T9 (behind inst. panel) then to main control unit, terminal 22
56bR to Fuse/relay panel D56bR 56bL to Fuse/relay panel D56bL 56bR1 to low beam head lite and park lite, right 56bL1 to low beam head lite and park lite, left
Fig. 24 - Brake Fluid Level Sending Unit, Checking:
Fig. 24 - Brake fluid level sending unit, checking
- remove sending unit
- measure resistance with Ohmmeter
^ float up = infinity Ohm
^ float down = 0 Ohm if not, replace sending unit
Fig. 25 - Coolant Level Sending Unit, Checking:
Fig. 25 - Coolant level sending unit, checking
- remove sending unit
- measure resistance with Ohmmeter
^ float up = infinity Ohm
^ float down = 0 Ohm if not, replace sending unit
Fig. 26 - Hydraulic Fluid Level Sending Unit, Checking:
Fig. 26 - Hydraulic fluid level sending unit, checking
- remove sending unit
- measure resistance with Ohmmeter
^ float up = infinity Ohm
^ float down = 0 Ohm
Fig. 27 - Coolant Temperature Switch, Checking:
Fig. 27 - Coolant temperature switch, checking
- measure resistance with Ohmmeter
^ up to 120~C (248~F) = infinity Ohm
^ above 120~C (248~F) = 0 Ohm
Fig. 28 - Sending Unit, Windshield/Washer Level, checking:
Fig. 28 - Sending unit, windshield/washer level, checking
- remove washer tank
- measure resistance on sending unit with Ohmmeter
^ tank filled = infinity Ohm
^ tank empty = 0 Ohm if not, replace washer tank
Fig. 29 - Hydraulic Pressure Warning Switch, Checking:
Fig. 29 - Hydraulic pressure warning switch, checking
- disconnect wire on warning switch
- press brake pedal about 20 times, engine not running
- measure resistance with Ohmmeter
^ 0 Ohm
- start engine, let idle for about 1 minute
- measure resistance with Ohmmeter
^ infinity Ohm