| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J59 | Relief relay for x contact |
| S10 | Fuses in fuse box |
| S11 | Fuses in fuse box |
| S163 | Fuse -2- (30) in fuse holder/battery |
| S176 | Fuse -4- (30), in fuse holder/battery |
| S177 | Fuse -5- (30), in fuse holder/battery |
| S229 | Fuse in fuse box |
| T2k | 2 pin connector, on the engine |
| T4l | 4 pin connector, on the engine |
| T6l | 6 pin connector, brown, on the protective housing, on the water case, left side |
| 500 | Screw connection -1- (30), on relay plate |
| 501 | Screw connection -2- (30), on relay plate |
| 502 | Screw connection -1- (30a), on relay plate |
| A2 | Positive (+) connection (15), in dash panel wiring loom |
| A32 | Positive connection (30), in dash panel wiring loom |
| * | Only in vehicles with air conditioning |
| J220 | Control unit for motronic |
| G2 | Coolant temperature sender (01039) |
| G40 | Hall sender (00515-2113) |
| G62 | Sender for coolant temperature (00522-2312) |
| N152 | Ignition transformer |
| P | Spark plug connector |
| Q | Flame plug |
| T4r | 4 pin connector |
| T6l | 6 pin connector, brown, on the protective housing, on the water case, left side |
| T10a | 10 pin connector, in the cable channel, left side |
| T80 | 80 pin connector |
| 85 | Earth connection -1-, in engine compartment wiring loom |
| 220 | Earth connection (sender earth), in engine wiring loom |
| A104 | Positive connection -2- (15), in dash panel wiring harness |
| D101 | Connection -1-, in engine compartment wiring loom |
| F60 | Idling switch (00516-2121) |
| F88 | Power assisted steering/pressure switch (00557) |
| G61 | Knock sensor I (00524-2142) |
| G69 | Throttle valve potentiometer (00518-2212) |
| G88 | Throttle valve positioner - potentiometer (00530-2124) |
| J220 | Control unit for motronic |
| J338 | Throttle valve control unit (01165) |
| V60 | Throttle valve positioner (00282-1232) |
| T3e | 3 pin connector, near the admission tube |
| T8m | 8 pin connector |
| T10 | 10 pin connector, orange, in the protective body of connections, in the water case, left side |
| T80 | 80 pin connector |
| 220 | Earth connection (sender earth), in engine wiring loom |
| * | Only in vehicles with M.F.A. |
| E35 | Switch for air conditioner |
| G28 | Engine speed sender (00513-2111) |
| G66 | Knock sensor II (00540-2144) |
| J220 | Control unit for motronic |
| J217 | Control unit for automatic gearbox |
| J255 | Control unit for Climatronic |
| J293 | Radiator fan control unit |
| T3d | 3 pin connector, near the admission tube |
| T3f | 3 pin connector, near the admission tube |
| T8l | 8 pin connector |
| T10 | 10 pin connector, orange, in the protective body of connections, in the water case, left side |
| T10u | 10 pin connector, in the engine compartment, left side |
| T12e | 12 pin connector |
| T16b | 16 pin connector |
| T68 | 68 pin connector |
| T80 | 80 pin connector |
| 10 | Earth point, in plenum chamber |
| 220 | Earth connection (sender earth), in engine wiring loom |
| * | Only in vehicles with automatic gearbox |
| G39 | Lambda probe (00525-2342) |
| J104 | Control unit for ABS with EDS |
| J104a | Control unit for ABS with EDS, TCS and ESP |
| J217 | Control unit for automatic gearbox |
| J220 | Control unit for motronic |
| N30 | Injector, cylinder 1 (01249-4411) |
| N31 | Injector, cylinder 2 (01250-4412) |
| N32 | Injector, cylinder 3 (01251-4413) |
| N33 | Injector, cylinder 4 (01252-4414) |
| S232 | Fuse in fuse box |
| T4p | 4 pin connector, on centre of the engine housing |
| T10 | 10 pin connector, orange, in the protective body of connections, in the water case, left side |
| T10a | 10 pin connector, in the cable channel, left side |
| T10d | 10 pin connector, green, in the protective body of connections, in the water case, left side |
| T16 | 16 pin connector, self diagnosis |
| T25 | 25 pin connector |
| T47 | 47 pin connector |
| T68 | 68 pin connector |
| T80 | 80 pin connector |
| D95 | Connection (injectors), in engine compartment wiring loom |
| E30 | Connection (87a), in engine wiring loom |
| * | Only in vehicles with automatic gearbox |
| G70 | Air mass meter (00553-2324) |
| J220 | Control unit for motronic |
| N80 | Activated charcoal filter system solenoid valve I (01247-4343) (pulsed) |
| N156 | Intake manifold change-over valve (01243-4333) |
| N205 | Camshaft adjustment valve -1- |
| T10 | 10 pin connector, orange, in the protective body of connections, in the water case, left side |
| T80 | 80 pin connector |
| A27 | Connection (speed signal), in dash panel wiring loom |
| E29 | Connection, in engine wiring loom |
| E30 | Connection (87a), in engine wiring loom |
| G | Fuel gauge sender |
| G6 | Fuel pump (lift pump) |
| G32 | Coolant shortage indicator sender |
| J17 | Fuel pump relay (01259-4433) |
| S228 | Fuse in fuse box |
| S234 | Fuse in fuse box |
| S243 | Fuse in fuse box |
| T6l | 6 pin connector, brown, on the protective housing, on the water case, left side |
| T10a | 10 pin connector, in the cable channel, left side |
| 135 | Earth connection -2-, in dash panel wiring loom |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| 504 | Screw connection -1- (87), on relay plate |
| A99 | Connection -1- (87), in dash panel wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| E29 | Connection, in engine wiring loom |
| E30 | Connection (87a), in engine wiring loom |
| F1 | Oil pressure switch |
| G22 | Speedometer sender (01086) |
| H11 | Oil pressure warning buzzer |
| J285 | Control unit with display unit in dash panel insert (01317) |
| K2 | Alternator warning lamp |
| K3 | Oil pressure warning lamp (00755) |
| K28 | Warning lamp for coolant temperature/coolant shortage |
| S2 | Fuses in fuse box |
| T10a | 10 pin connector, in the cable channel, left side |
| T32 | 32 pin connector, blue, in the dashboard |
| T32a | 32 pin connector, green, in the dashboard |
| 12 | Earth point, in engine compartment, left |
| 85 | Earth connection -1-, in engine compartment wiring loom |
| B163 | Positive connection -1- (15), in interior wiring harness |
| 503 | Screw connection -2- (75x), on relay plate |
| E86 | Call-up button for multi-function indicator |
| E109 | Memory switch for multi-function indicator |
| G1 | Fuel gauge (00664) |
| G3 | Coolant temperature gauge |
| G5 | Rev. counter (00662) |
| J119 | Multi-function indicator |
| J285 | Control unit with display unit in dash panel insert (01317) |
| K105 | Reserve fuel warning lamp (01082) |
| T6d | 6 pin connector |
| T12d | 12 pin connector, in the Climatronic |
| T32 | 32 pin connector, blue, in the dashboard |
| T32a | 32 pin connector, green, in the dashboard |
| A27 | Connection (speed signal), in dash panel wiring loom |
| * | Only in vehicles with M.F.A. |
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