Abbreviations of signal and circuit designations for wiring diagrams - OV00.01-U-1001-28RAA
MODEL 251.1
| Abbreviation | Designation | Notes |
|---|---|---|
| (+) | Plus | |
| (-) | Minus | |
| 15 | Switched Plus | |
| 15R | Switched Plus, in ignition positions 1, 2 & 3 | |
| 15X | Switched Plus, in ignition position 2 | |
| 30 | Battery voltage, Plus (permanent plus) | |
| 30z | Terminal 30 1. input | |
| 31 | Return line to battery minus or ground, direct | |
| 31b | Return line to battery minus or ground via switch or relay, switched minus | |
| 49 | Flasher unit input | |
| 49a | Flasher unit output | |
| 49L | Left turn signal lamp | |
| 49R | Right turn signal lamp | |
| 50 | Starter control (direct) | |
| 53 | Wiper motor input (+) | |
| 53b | Wiper motor shunt winding | |
| 54 | Stop lamp | |
| 55 | Fog lamp | |
| 56 | Headlamp light | |
| 56a | High beam and high beam indicator light | |
| 56b | Low beam | |
| 58 | Side marker lamp, tail lamp, license plate lamp and instrument lighting | |
| 58d | Adjustable instrument panel/switch lighting | |
| 58L | Left parking light | |
| 58R | Right parking light | |
| 61 | Generator charge indicator lamp | |
| 85 | Winding end minus or ground | |
| 86 | Winding start | |
| 87 | Input | |
| 87a | First output (NC contact side) | |
| 87b | Second output | |
| 87c | Third output | |
| 87ME1 | 87 motor electronics 1 | |
| 87ME2 | 87 motor electronics 2 | |
| AB | Airbag | |
| AB F+ | Driver airbag plus | |
| AB F- | Driver airbag minus | |
| AB1, BF | Airbag 1, front passenger | |
| AB1, FA | Airbag 1, driver | |
| AB2, BF | Airbag 2, front passenger | |
| AB2, FA | Airbag 2, driver | |
| ACSE | Automatic child seat recognition | |
| AL (-) | Exit lamp ground | |
| AL (+) | Exit lamp voltage supply | |
| AM | Amplitude modulation | |
| AM/FM | Amplitude modulation/frequency modulation | |
| Ant. | Antenna | |
| ART | Distronic | |
| ASK | Drive pawl switch | |
| ASK (-) | Drive pawl switch, minus | |
| BBV | Brake lining wear indicator | |
| BFS | Brake fluid switch | |
| BL (+) | Turn signal lamp, plus | |
| BL (-) | Turn signal lamp, minus | |
| BLS | Stop lamp switch normally open contact | |
| BS | Stop lamp switch normally closed contact | |
| CAN-B H | CAN interior compartment bus high | |
| CAN-B L | CAN interior compartment bus low | |
| CAN-C H | CAN engine compartment bus high | |
| CAN-C L | CAN engine compartment bus low | |
| CL | Central locking | |
| Crash | Crash signal | |
| D2B IN | D2 bus input | |
| D2B OUT | D2 bus output | |
| Data + | Serial interface, plus | |
| Data - | Serial interface, minus | |
| DF HL | Left rear rotational speed | |
| DF HR | Right rear rotational speed | |
| DF VL | Left front rotational speed | |
| DF VR | Right front rotational speed | |
| DFA VL | Left front rotational speed output | |
| DFA VR | Right front rotational speed output | |
| DG +5V | Pressure sensor +5V | |
| DG Sig. | Pressure sensor, signal | |
| DGM | Pressure sensor, ground | |
| Diag. | Diagnosis | |
| FH | Power window | |
| FH H | One-touch up feature | |
| FH HL | Left rear power window | |
| FH HR | Right rear power window | |
| FH T | One-touch down feature | |
| FH VL | Left front power window | |
| FH VR | Right front power window | |
| FL | Rear lamp | |
| FM | Frequency modulation | |
| FSB | Parking brake | |
| GND | Shield | |
| GS | Emergency tensioning retractor | |
| GS, BF | Passenger emergency tensioning retractor | |
| GS, FA | Driver emergency tensioning retractor | |
| GS, HL | Left rear emergency tensioning retractor | |
| GS, HR | Right rear emergency tensioning retractor | |
| H (+) | Hall sensor power supply | |
| H (-) | Hall sensor, ground | |
| H 1 Sig. | Hall sensor 1 signal | |
| H 2 Sig. | Hall sensor 2 signal | |
| H Sig.1 | Hall sensor signal 1 | |
| H Sig.2 | Hall sensor signal 2 | |
| HAL 1 | Left rear axle 1 | |
| HAL 2 | Left rear axle 2 | |
| HAL V | Left rear axle power supply | |
| HAR 1 | Right rear axle 1 | |
| HAR 2 | Right rear axle 2 | |
| HAR V | Right rear axle power supply | |
| HDF | Remote trunk release | |
| HH (+) | Rear Hall sensor power supply | |
| HH (-) | Rear Hall sensor, ground | |
| HHS | Rear window defroster | |
| HKL | Backrest cushion heater element | |
| HKS | Seat cushion heater element | |
| HTR (+) | Sensor heater, positive | |
| HTR (-) | Sensor heater, negative | |
| HV (+) | Height adjustment Hall sensor power supply | |
| HV (-) | Height adjustment Hall sensor ground | |
| IR (+) | Infrared receiver, positive | |
| IR (-) | Infrared receiver, negative | |
| IR-Daten | Infrared receiver, data | |
| K | Diagnosis, K-bus | |
| K (+) | Head restraint Hall sensor power supply | |
| KI-SI | Child safety lock for rear power windows | |
| LL L | Left reading lamp | |
| LL R | Right reading lamp | |
| Lsp. + | Loudspeaker power supply | |
| Lsp. - | Loudspeaker ground | |
| MHH (+) | Rear height adjustment motor power supply | |
| MHH (-) | Rear height adjustment motor ground | |
| MHV (+) | Front height adjustment motor power supply | |
| MHV (-) | Front height adjustment motor ground | |
| Mikr. + | Microphone power supply | |
| Mikr. - | Microphone ground | |
| MK (-) | Head restraint motor ground | |
| MSKT (+) | Seat cushion length adjustment motor power supply | |
| MSKT (-) | Seat cushion length adjustment motor ground | |
| Mute | Mute | |
| MVZ (+) | Forward/back adjustment motor power supply | |
| MVZ (-) | Forward/back adjustment motor ground | |
| NF | Audio frequency | |
| NF-L | Left audio frequency | |
| NF-R | Right audio frequency | |
| NSL | Rear fog lamp | |
| O2S (+) | Oxygen sensor, positive | |
| O2S (-) | Oxygen sensor, negative | |
| P-Sig. | Selector lever position "P" signal | |
| R/P-S (+) | R/P lockout solenoid, negative | |
| R/P-S (-) | R/P lockout solenoid, positive | |
| RFL | Back-up lamp | |
| RV | Automatic transmission control valve | |
| S10 | Rear sensor 10 | |
| S2 | Front sensor 1 | |
| S3 | Front sensor 2 | |
| S4 | Front sensor 4 | |
| S5 | Front sensor 5 | |
| S6 | Front sensor 6 | |
| S7 | Rear sensor 7 | |
| S8 | Rear sensor 8 | |
| S9 | Rear sensor 9 | |
| SA 1 | Automatic dimming inside rearview mirror 1 | |
| SA 2 | Automatic dimming inside rearview mirror 2 | |
| SH (+) | Rear sensor power supply | |
| SH (+) | Rearview mirror defroster, positive | |
| SH (-) | Rearview mirror defroster, negative | |
| SH (-) | Rear sensor ground | |
| SHD | Sliding/pop-up roof | |
| Sig. | Signal | |
| SKT (+) | Seat cushion length Hall sensor power supply | |
| SKT (-) | Seat cushion length Hall sensor ground | |
| SP1M | Set value potentiometer 1, ground | |
| SP1S | Set value potentiometer 1, slide contact | |
| SP2M | Set value potentiometer 2, ground | |
| SP2S | Set value potentiometer 2, slide contact | |
| Start | Circuit 50, release | |
| SV | Automatic transmission control valve | |
| SV (+) | Front sensors power supply | |
| SV (-) | Front sensors ground | |
| SYNC | Synchronisation signal | |
| TNA | Engine speed outlet signal | |
| U | Power supply | |
| USP1 | Set value potentiometer 1 power supply | |
| USP2 | Set value potentiometer 2 power supply | |
| V (-) | Valve, negative | |
| VAL 1 | Left front axle 1 | |
| VAL 2 | Left front axle 2 | |
| VAL V | Left front axle power supply | |
| VAR 1 | Right front axle 1 | |
| VAR 2 | Right front axle 2 | |
| VAR U | Right front axle power supply | |
| VSS VL | Left front speed signal | |
| VSS VR | Right front speed signal | |
| VZ (+) | Hall sensor power supply | |
| VZ (-) | Hall sensor ground | |
| W H (+) | Front warning element power supply | |
| W H (-) | Ground, front warning element | |
| W H (Data) | Signal, front warning element | |
| W V (+) | Rear warning element power supply | |
| W V (-) | Ground, rear warning element | |
| W V (Data) | Signal, rear warning element | |
| Wake up | D2 bus switch-on signal | |
| ZF | Intermediate frequency | |
| ZF-Ant. | Intermediate frequency antenna |