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Home >> Mercedes Benz >> 2011 >> S550 Base >> Repair and Diagnosis >> General Information >> OEM General Information >> OEM User Information -- S-Class (221) >> User Information >> Abbreviations of signal and circuit designations for wiring diagrams - OV00.01-P-1001-28SAA

Abbreviations of signal and circuit designations for wiring diagrams - OV00.01-P-1001-28SAA

Model 221 

Abbreviation Designation Notes
(+) Power supply  
(-) Ground  
+5 V Sensor supply (5V)  
15 Terminal 15  
15 g Circuit 15g (limp-home, if central CAN fails)  
15R Circuit 15R  
2.Batt. 2nd battery  
3.BL Center high-mounted stop lamp LEDs  
30 Circuit 30  
30g Circuit 30g  
30z Circuit 30z  
30_HoStr Circuit 30, high-current connection  
31 Tml. 31  
33 Mirror, fold in (+ drive mode)  
33 Mirror, fold in (+ garage position)  
49 Direction indicator lamp  
49a L Left turn signal  
49a R Right turn signal  
54 Circuit 54 stop lamp  
55l Left foglamp  
55 R Right fog light  
56a Main beam  
56a L Left high beam/infrared light  
56a R Right high beam/infrared light  
56a-xenon Bi-xenon high beam  
56b Low beam  
56b L Left low beam  
56b R Right low beam  
57 L Left parking lamp  
57 R Right parking lamp  
58 Ambiance illumination  
58d Circuit 58d  
58L Left side marker  
58R Right side marker  
61 Terminal 61 (signal output)  
87 Circuit 87  
AAV Activated charcoal filter shutoff valve  
AB (-) Airbag ground  
AB St2 + Airbag stage 2 (positive)  
as of St2 - Airbag stage 2 (ground)  
AB-St1 + Airbag stage 1 (positive)  
AB-St1 - Airbag stage 1 (ground)  
AB1, BF+ Passenger-sidebag 1st stage +  
AB1, BF- Passenger-sidebag 1st stage -  
AB1, FA+ Driver-sidebag 1st stage +  
AB1, FA- Driver-sidebag 1st stage -  
AB2, BF+ Passenger-sidebag 2nd stage +  
AB2, BF- Front-passenger airbag, 2nd stage -  
AB2, FA+ Driver-sidebag 2nd stage +  
AB2, FA- Driver-sidebag 2nd stage -  
ABHRM Right rear axle body acceleration sensor ground  
ABHRS Right rear axle body acceleration sensor signal  
ABHRV Right rear axle body acceleration sensor supply  
ABVLS Left front axle body acceleration sensor signal  
ABVRM Left and right front axle body acceleration sensor ground  
ABVRV Left and right front axle body acceleration sensor supply  
AGR1M Exhaust gas recirculation, right bank, motor negative  
AGR2M Exhaust gas recirculation, left bank, motor negative  
AGR2P EGR actuation 2 P  
AGRP1 EGR potentiometer signal, right bank  
AGRP2 EGR potentiometer signal, left bank  
AGT Exhaust-gas temperature  
AIS ser. AIS, serial  
AKF Purge valve  
ACSR [AKSE] Automatic child seat recognition  
Ant-Contr. Uant - Contrl  
Ant. Bt Bluetooth antenna  
Ant. ETC ETC antenna  
Ant. GPS GPS antenna  
Drive train CAN Drive train CAN  
Drive train LIN Drive train LIN  
Drive train sensor CAN Drive train sensor CAN  
Audio-GND Audio - GND  
Audio-L Audio - L  
Audio-R Audio - R  
Audio-Shield Audio - Shield  
Austemp + Outside temperature (+)  
Austemp - Outside temperature (-)  
AUX GND AUX GND  
Left AUX AUX audio input, left channel  
Right AUX AUX audio input, right channel  
AUX Sh AUX shield  
AUX-SUPPLY AUX-SUPPLY (0.5 voltage supply (positive) for motor 2)  
A_EKA_l Left EKAS (intake port shutoff) end position switch  
A_EKA_r Right EKAS (intake port shutoff) end position switch  
A_P_ZUE1 Ignition signal 1, cylinder 1 ignition coil  
A_P_ZUE2 Ignition signal 2, cylinder 2 ignition coil  
A_P_ZUE3 Ignition signal 3, cylinder 3 ignition coil  
A_P_ZUE4 Ignition signal 4, cylinder 4 ignition coil  
A_P_ZUE5 Ignition signal 5, cylinder 5 ignition coil  
A_P_ZUE6 Ignition signal 6, cylinder 6 ignition coil  
A_P_ZUE7 Ignition signal 7, cylinder 7 ignition coil  
A_P_ZUE8 Ignition signal 8, cylinder 8 ignition coil  
A_S_SAM On-board electrical system switchover, SAM  
A_S_SLV 1 Secondary air valve  
A_T_DCM Motor (negative), throttle valve actuator  
A_T_DCP Motor (positive), throttle valve actuator  
A_T_NWSA1 Exhaust camshaft positioner, right bank  
A_T_NWSA2 Exhaust camshaft positioner, left bank  
A_T_NWSE1 Intake camshaft positioner, right bank  
A_T_NWSE2 Inlet camshaft positioner, left bank  
A_U_5VG1M 5V sensor supply 1  
BAV_12V Brake Assist System valve, Highside  
BAV_A Brake Assist System valve, Lowside  
BL Stop lamp  
Bl-L Left turn signal  
Bl-R Right turn signal  
BLA Stop lamp switch, output  
BPA_L Boost pressure positioner actuation (O_T_BPA_L)  
BSL-L Left stop lamp/taillamp LED  
BSL-R Right stop lamp/taillamp LED  
B_D_LIN LIN  
C Camera 1 GND CV+  
CACV Charge air cooler bypass valve  
CAK, BF Passenger-side NECK-PRO head restraint  
CAK, FA Driver-side NECK-PRO head restraint  
CAN-A H Telematics CAN HIGH  
CAN-A L Telematics CAN LOW  
CAN-A Sh Telematics CAN screen  
CAN-B H Interior CAN HIGH  
CAN-B L Interior CAN LOW  
CAN-C H Drive train CAN High  
CAN-C L Drive train CAN Low  
CAN-D H Diagnostic CAN High  
CAN-D L Diagnostic CAN Low  
CAN-E H Chassis CAN High  
CAN-E L Chassis CAN Low  
CAN-E Sh Chassis CAN screen  
CAN-F H Central CAN High  
CAN-F L Central CAN Low  
CAN-F low frequency Central CAN screen  
CAN-G H Front end CAN High  
CAN-G L Front end CAN Low  
CAN-H H Vehicle dynamics CAN High  
CAN-H L Vehicle dynamics CAN Low  
CAN-Sen H Rear sensor CAN High  
CAN-Sen L Rear sensor CAN Low  
CEN + Centerspeaker +  
CEN - Centerspeaker -  
Center - Left rear surround -  
Center+ Left rear surround +  
CLK + Clock +  
CLK - Clock -  
Clock + Cycle 1 High  
Clock - Cycle 1 Low  
Crash out, dig Crash output, digital (USA)  
Crash Sig. Crash signal  
CV Composite camera 1 CV  
CVH Crankcase ventilation system heater  
Data Data  
Data + Data_+  
Data - Data_-  
Data H Data high  
Data L Data low  
Data-RLS Data (rain sensor, light sensor)  
DCM Throttle valve actuator motor (negative)  
DCP Throttle valve actuator (motor positive)  
DCPM+ Throttle valve actuator (motor positive)  
DCPM- Throttle valve actuator (motor negative)  
DDS Difference pressure sensor signal  
DFHL_M Left rear RPM sensor ground  
DFHL_S Left rear RPM sensor signal  
DFHR_M Right rear RPM sensor ground  
DFHR_S Right rear RPM sensor signal  
DFK Rotary tumbler contact  
DFVL_M Left front RPM sensor ground  
DFVL_S Left front RPM sensor signal  
DFVR_M Right front RPM sensor ground  
DFVR_S Right front RPM sensor, signal  
Diag. Diagnosis  
Diagnostic CAN Diagnostic CAN  
DK1 Tumble flap position sensor 1, left bank  
DK2 Tumble flap position sensor 2, left bank  
DKI Signal 1, throttle valve potentiometer 2  
DKP Motor (positive), throttle valve actuator 2  
DRS Camshaft sensor signal  
DRV + Pressure regulator valve supply  
DS Pressure sensor downstream of intake manifold throttle valve  
DS, BF+ Passenger-side pressure sensor +  
DS, FA+ Driver-side pressure sensor +  
DS, HL + Left rear pressure sensor +  
DS, HR+ Right rear pressure sensor +  
DSHKHP1 Fuel high-pressure sensor  
DSKHP1 Fuel high-pressure sensor  
DSLF-L Pressure sensor in left air filter  
DSLF-R Pressure sensor in right air filter  
DSLF1 Pressure sensor signal, right bank downstream of air filter  
DSLF2 Signal, pressure sensor 2 downstream of air filter  
DSLL Pressure sensor upstream of throttle valve  
DST Tank pressure sensor  
DZ-N2 Engine speed N2  
DZ-N3 RPM N3  
ECO Power steering pump pressure release valve  
EGRCBP EGR cooler bypass feedback signal  
EGRCSP EGR cooler bypass  
EGRNEG EGR motor, negative  
EGRPOS EGR motor, positive  
EKA-A Intake port shutoff actuation  
EKA-A Pressure sensor signal downstream of particulate filter  
EKP Fuel pump  
EKP Fuel pump relay  
EKP+ Fuel pump +  
EKP- Fuel pump -  
EKPR Fuel pump relay  
EKP_Lauf Fuel pump actuation  
EMC 2 Solenoid valve actuation for engine mount 2  
ETC Coolant thermostat heating element  
EUV-DK Electronic switchover valve (EUV), tumble flap actuator  
EV1 Injection valve 1  
EV1 Injection valve output stage 1 cyl. 1  
EV10_ZYL 12 Cylinder 12 injection valve  
EV11_ZYL 8 Cylinder 8 injection valve  
EV12_ZYL 10 Cylinder 10 injection valve  
EV1_ZYL 1 Cylinder 1 injection valve  
EV2 Injection valve 2  
EV2 Injection valve output stage 2 cyl. 4  
EV2_ZYL 5 Injection valve cylinder 5 (A_P_EV2_ZYL 5)  
EV3 Injection valve 3  
EV3 Injection valve 5  
EV3 Injection valve output stage 3 cyl. 3 (A_P_EV3)  
EV3_ZYL 3 Injection valve cylinder 3 (A_P_EV3_ZYL 3)  
EV4 Injection valve 4  
EV4 Injection valve output stage 4 cyl. 6 (A_P_EV4)  
EV4_ZYL 6 Injection valve cylinder 6 (A_P_EV4_ZYL 6)  
EV5 Injection valve output stage 5 cyl. 2 (A_P_EV5)  
EV5_ZYL 2 Injection valve cylinder 2 (A_P_EV5_ZYL 2)  
EV6 Injection valve 6  
EV6 Injection valve output stage 6 cyl. 5 (A_P_EV6)  
EV6_ZYL 4 Injection valve cylinder 4 (A_P_EV6_ZYL 4)  
EV7 Injection valve 7  
EV7_ZYL 7 Injection valve cylinder 7 (A_P_EV7_ZYL 7)  
EV8 Injection valve 8  
EV8_ZYL 11 Injection valve cylinder 11 (A_P_EV8_ZYL 11)  
EV9_ZYL 9 Injection valve cylinder 9 (A_P_EV9_ZYL 9)  
EXTS1 Exhaust gas temperature sensor 1  
E_A_IP1S Signal, throttle valve potentiometer 1  
E_A_IP2S Signal, throttle valve potentiometer 2  
E_A_KS1A Knock sensor signal A, right bank  
E_A_KS1B Knock sensor signal B, left bank  
E_A_KS2A Knock sensor signal A, right bank  
E_A_KS2B Knock sensor signal B, left bank  
E_A_TMOT1 Coolant temperature sensor signal  
E_F_KWGA Crankshaft sensor signal  
E_F_KWGB Crankshaft sensor ground  
E_F_NWGA1 Exhaust camshaft positioner, right bank  
E_F_NWGA2 Exhaust camshaft sensor, left bank  
E_F_NWGE1 Inlet camshaft sensor, right bank  
E_F_NWGE2 Inlet camshaft sensor, left bank  
Vehicle dynamics CAN Vehicle dynamics CAN  
Chassis CAN Chassis CAN  
FAN Engine fan  
FBAS GND CVBS GND (reversing camera)  
FBAS Sig. FBAS B Signal (AUX)  
FH-high FH high  
FH-Mot + FH-motor (+high)  
FH-low FH low  
FHRLY Fuel filter heating relay  
FRB (+) Footwell illumination supply  
FRB-VL Left front footwell illumination  
FRB-VR Right front footwell illumination  
Front end CAN Front end CAN  
FSMOEL Oil level switch  
FTS Fuel temperature  
GK 1 Glow plug 1  
GK 2 Glow plug 2  
GK 3 Glow plug 3  
GK 4 Glow plug 4  
GK 5 Glow plug 5  
GK 6 Glow plug 6  
GK 7 Glow plug 7  
GK 8 Glow plug 8  
GK L Left seat belt contact  
GK R Right seat belt contact  
GND GND  
GPS GPS  
GPS Sh GPS Shield  
GSS, BF Passenger-side seat belt buckle switch  
GSS, FA Driver-side seat belt buckle switch  
GST, BF+ Passenger-side buckle emergency tensioning retractor +  
GST, BF- Passenger-side buckle emergency tensioning retractor -  
GST, FA+ Driver-side buckle emergency tensioning retractor +  
GST, FA- Driver-side buckle emergency tensioning retractor -  
GTK-L Left seat belt comfort-fit control  
GTK-R Right seat belt comfort-fit control  
GUS, HL+ Left rear emergency tensioning retractor +  
GUS, HL- Left rear emergency tensioning retractor -  
GUS, HR+ Right rear emergency tensioning retractor +  
GUS, HR- Right rear emergency tensioning retractor -  
GUTK + Seat belt comfort-fit supply  
GUV-Sen. Seat belt locking sensor  
G_R_APP1 Reference ground, sensor 1  
G_R_APP2 Reference ground, sensor 2  
G_R_GND Sensor reference ground  
H + Hall sensor, steering column up/down  
HAL + Left rear axle damping valve, supply  
HAL V1 Left rear axle damping valve, valve 1  
HAL V2 Left rear axle damping valve, valve 2  
HAR + Right rear axle damping valve supply  
HAR V1 Right rear axle damping valve, valve 1  
HAR V2 Right rear axle damping valve, valve 2  
HAV Heater shutoff valve  
HAV Heater shutoff valve  
HD-AS Trunk lid outside switch  
HFM sequential multipoint fuel injection/ ignition system1 Hot film mass air flow sensor 1  
HFM 2 Hot film mass air flow sensor 2  
HFM-L Sig HFM sequential multiport fuel injection/ignition system signal, left bank  
HFM-R Sig HFM-SFI signal, right bank  
HFM-Ref Reference signal (temperature)  
HFM1 Hot film mass air flow sensor (sensor ground)  
HFM_M HFM-SFI ground  
HFM_P HFM-SFI supply  
HL + Left rear door module speaker +  
HL- Left rear door module speaker -  
RR Main relay  
HR+ Right rear door module speaker +  
HR- Right rear door module speaker -  
HS Hall sensor, rear side window roller blind  
HS + Hall sensor, backrest supply / signal  
HS - Hall sensor ground  
HS 1 Hall sensor 1  
HS 2 Hall sensor 2  
HS-UB Hall sensor supply  
HSK-Bel Glove compartment illumination  
IATS2 Intake air temperature sensor signal 2  
INJ H Injector "high"  
INJ H Actuation of high side injector  
INJ L Injector "low"  
INJ L Actuation of low side injector  
InjVH11 Injector actuation, Highside 11 cyl. 1  
InjVH12 Injector actuation, highside 12 cyl. 2  
InjVH13 Injector actuation, highside 13 cyl. 3  
InjVH21 Injector actuation, highside 21 cyl. 4  
InjVH22 Injector actuation, Highside 22 cyl. 5  
InjVH23 Injector actuation, highside 23 cyl. 6  
InjVL11 Injector actuation, Lowside 11 cyl. 1  
InjVL12 Injector actuation, lowside 12 cyl. 2  
InjVL13 Injector actuation, lowside 13 cyl. 3  
InjVL21 Injector actuation, lowside 21 cyl. 4  
InjVL22 Injector actuation, Lowside 22 cyl. 5  
InjVL23 Injector actuation, lowside 23 cyl. 6  
Interior CAN Interior CAN  
ION2 Ionic current 1 (E_A_ION2)  
ION2 Ionic current 2 (E_A_ION2)  
ION3 Ionic current 3 (E_A_ION3)  
ION4 Ionic current 4 (E_A_ION4)  
IP1S Throttle valve potentiometer 1 signal  
IP2S Throttle valve potentiometer 2 signal  
IPM Throttle valve actuator, sensor ground  
IRL-HL Left interior light FL  
IRL-HR Right interior light FL  
ISM ISM emergency path actuation  
I_A_APP1 Pedal value sensor, 1st signal  
I_A_APP2 Pedal value sensor, 2nd signal  
I_A_EXTS3 Exhaust gas temperature sensor 3  
KDP Metering pump  
KDS +5V Supply voltage of fuel pressure sensor  
KDS GND Ground of fuel pressure sensor  
KDS Sig. Acquisition of fuel pressure sensor signal  
KISI-Mot + Child safety lock motor off (+)  
KLB 12V A/C bus_12V_Out  
KLB Data A/C bus_data  
KLB GND A/C bus_GND  
KOMPS E-net compensator  
KS1-Sig Knock sensor 1 signal (right front)  
KS1A Knock sensor 1, input A  
KS1A Knock sensor signal A, right bank  
KS1B Knock sensor 1, input B  
KS1B Knock sensor signal B, right bank  
KS2-Sig Knock sensor 2 signal (right rear)  
KS2A Knock sensor 2, input A  
KS2A Knock sensor signal A, left bank  
KS2B Knock sensor 2, input B  
KS2B Knock sensor signal B, left bank  
KS3-Sig Knock sensor 3 signal (left front)  
KS3A Knock sensor 3, input A  
KS3B Knock sensor 3, input B  
KS4-Sig Knock sensor 4 signal (left rear)  
KS4A Knock sensor 4, input A  
KS4B Knock sensor 4, input B  
KSDS + Fuel pressure sensor + (voltage supply 5V)  
KSDS - Fuel pressure sensor -  
KSDS Sig. Fuel pressure sensor signal  
KSP (+) Electric fuel pump actuation (relay)  
KS_M Knock sensor signal B, right bank  
KS_S Knock sensor signal A, left bank  
KTS Sig Fuel temperature sensor signal  
KWDGA Crankshaft sensor  
KWDGB Crankshaft sensor (reference)  
KWG Crankshaft sensor signal  
KWG - Crankshaft sensor ground  
KWG Sig Crankshaft sensor signal  
KWS Sig Crankshaft sensor signal  
KWTF Sig Coolant temperature sensor signal  
KWTHS 3-plate thermostat  
KWTHS Coolant thermostat  
KZL-L Left license plate lamp  
KZL-R Right license plate lamp  
LDF-1 Boost pressure sensor signal  
LDR Charge pressure positioner  
LDS Sig Boost pressure sensor signal  
LED LED  
Steering LIN Steering LIN  
LIN LIN bus  
LIN A1 COU [ZBE] LIN  
LIN B1 Front door LIN  
LIN B2 Rear door LIN  
LIN B3 OBF LIN  
LIN B4 Rear SAM LIN  
LIN B5 KLA-LIN  
LIN C1 Drive train LIN  
LIN E1 Steering LIN  
LIN bus LIN bus  
LIN bus + LIN bus_12V_output  
LIN bus - LIN bus_GND  
LIN bus data LIN bus_data  
LIN bus battery voltage LIN bus voltage supply  
Left-hand drive vehicle, left rear Left reading lamp FL  
Left-hand drive vehicle, right rear Right reading lamp FL  
Left-hand drive vehicle, L Left reading lamp  
Left-hand drive vehicle, R Right reading lamp  
LLKR Charge air cooler relay  
LLTF Sig Boost air temperature sensor signal (I_A_IATS2)  
LPV Linear tank vent valve  
LRH + Steering wheel heater (ground)  
LRH - Steering wheel heater (positive)  
LS + Speaker +  
LS - Speaker -  
LS1 Release switch contact 1  
LS1HK Oxygen sensor downstream of CAT, right bank (signal)  
LS1VK-R Right oxygen sensor 1 upstream of catalytic converter  
LS2 Release switch contact 2  
LS2HK Oxygen sensor downstream of CAT, left bank (signal)  
LS2HKS Oxygen sensor downstream of CAT, left bank (signal)  
LS2VK-L Left oxygen sensor upstream of catalytic converter  
LSCA1-L Oxygen sensor 1, compensating current  
LSCA2_L Oxygen sensor 2, compensating current (left)  
LSCP1-L Oxygen sensor 1, left pump current  
LSCP2_L Oxygen sensor 2, pump current (left)  
LSH K1 Lambda sensor heater TWC 1  
LSH K2 Lambda sensor heater TWC 2  
LSH1-L Oxygen sensor heater 1  
LSH1HK Oxygen sensor heater downstream of CAT, right bank  
LSH1HKS Oxygen sensor heater downstream of CAT, right bank (signal)  
LSH1VK Oxygen sensor heater upstream of CAT, right bank  
LSH2HK Oxygen sensor heater in catalytic converter, left bank  
LSH2VK Oxygen sensor heater upstream of catalytic converter, left bank  
LSH2_L Oxygen sensor heater 2 (left)  
LSHK Oxygen sensor in CAT, right bank  
LSHK Ground, oxygen sensors downstream of CAT  
LSHK Oxygen sensor signal in catalytic converter, right bank  
LSHK(-) Oxygen sensor behind catalytic converter, reference ground  
LSHK-L Left oxygen sensor behind catalytic converter  
LSHK-R Right oxygen sensor behind catalytic converter  
LSHKVK1 Oxygen sensor heater upstream of catalytic converter, right bank (A_T_LSHKVK1)  
LSHVK1-R Right oxygen sensor heater upstream of catalytic converter  
LSHVK2 Oxygen sensor heater upstream of catalytic converter, left bank  
LSHVK2-L Left oxygen sensor heater upstream of catalytic converter  
LSIK Oxygen sensor sensor ground in catalytic converter, left bank  
LSK Oxygen sensor upstream of catalytic converter, left bank  
LSU1A-R Oxygen sensor upstream of catalytic converter, right bank (trimming resistor)  
LSU1Ia Right oxygen sensor upstream of CAT (trimming resistor)  
LSU1IP Oxygen sensor upstream of catalytic converter, right bank (pump current)  
LSU1P-R Oxygen sensor upstream of catalytic converter, right bank (pump current)  
LSU1UN Oxygen sensor upstream of catalytic converter, right bank (Nernst voltage)  
LSU1VM Oxygen sensor upstream of catalytic converter, right bank (virtual ground)  
LSU2IA Oxygen sensor upstream of CAT, left bank (trimming resistor)  
LSU2IA-L Oxygen sensor upstream of catalytic converter, left bank (trimming resistor)  
LSU2IP Oxygen sensor upstream of catalytic converter, left bank (pump current)  
LSU2IP-L Oxygen sensor upstream of catalytic converter, left bank (pump current)  
LSU2UN Oxygen sensor upstream of catalytic converter, left bank (Nernst voltage)  
LSU2UN-L Oxygen sensor upstream of catalytic converter, left bank (Nernst voltage)  
LSU2VM Oxygen sensor upstream of catalytic converter, left bank (virtual ground)  
LSVK Oxygen sensor upstream of catalytic converter reference ground  
LSVN1-L Oxygen sensor 1, Nernst voltage  
LS_A Release switch center tap  
LUES Engine fan, PWM signal  
Luf. (-) Fan output ground  
LUS1UN-R Oxygen sensor upstream of catalytic converter, right bank (Nernst voltage)  
LVDS-nf Screen interface, LVDS (Low Voltage Difference Signal)  
MCONV Solenoid clutch  
Mic. + Microphone +  
Mic. - Microphone -  
Mic. 1 Microphone 1+  
Mic. GND Microphone ground  
Mic. Out Microphone out  
Mic. Sh Microphone screen  
Mic.1 Microphone 1  
Mic.2 Microphone 2  
Mic.3 Microphone 3  
Mic.4 Microphone 4  
Mic.Out Sh Mic-Out screen  
MLS + Steering column motor +  
MLS - Steering column motor -  
MOST Media Oriented System Transport (MOST)  
MOST in MOST Receiver IN  
MOST out MOST Transmitter OUT  
Motor + Motor (+)  
Engine Motor (-)  
MRLY Main relay  
MSVH1 Quantity control valve, right bank (highside)  
MSVH2 Quantity control valve, left bank (highside)  
MSVL1 Quantity control valve, right bank (lowside)  
MSVL2 Quantity control valve, left bank (lowside)  
Mute Radio Mute  
M_R_IPM Sensor ground, throttle valve potentiometer  
M_R_SENM1 Sensor ground 1  
M_R_SENM2 Sensor ground 2  
M_Sensor Sensor ground  
nc Not assigned  
NHLM Left rear axle level sensor ground  
NHLS Left rear axle level sensor signal  
NHLV Left rear axle level sensor supply  
NHRM Rear axle level sensor ground  
NHRM Right rear axle level sensor ground  
NHRS Right rear axle level sensor signal  
NHRS 1 Rear axle level sensor signal  
NHRV Right rear axle level sensor supply  
NHRV Rear axle level sensor supply  
NSL NSL (rear fog lamp)  
NSL-L Left rear fog lamp  
NSL-R Right rear fog lamp  
NVLM Left front axle level sensor ground  
NVLS Left front axle level sensor signal  
NVLV Left front axle level sensor supply  
NVRM Right front axle level sensor ground  
NVRS Right front axle level sensor signal  
NVRV Right front axle level sensor supply  
NWAE2 Exhaust camshaft sensor, left bank  
NWG-Sig Camshaft sensor signal  
NWGA-L Exhaust camshaft sensor, left bank  
NWGA-R Exhaust camshaft positioner, right bank  
NWGA1 Exhaust camshaft sensor, right bank  
NWGA2 Exhaust camshaft sensor, left bank  
NWGE-L Inlet camshaft sensor, left bank  
NWGE-R Inlet camshaft sensor, right bank  
NWGE1 Intake camshaft sensor, right bank  
NWGE2 Intake camshaft sensor, left bank  
NWG_M Sensor ground 1  
NWHG1 Camshaft sensor, right engine bank  
NWS Camshaft positioner  
NWSA 1 Exhaust camshaft positioner, right bank  
NWSA 2 Exhaust camshaft positioner, left bank  
NWSA-L Exhaust camshaft positioner, left bank  
NWSA-R Exhaust camshaft positioner, right bank  
NWSA1 Exhaust camshaft positioner, right bank  
NWSA2 Exhaust camshaft positioner, left bank  
NWSE 1 Intake camshaft positioner, right bank  
NWSE 2 Inlet camshaft positioner, left bank  
NWSE-L Inlet camshaft positioner, left bank  
NWSE-R Inlet camshaft positioner, right bank  
NWSE1 Intake camshaft positioner, right bank  
NWSE2 Inlet camshaft positioner, left bank  
NW_G_M Position sensor, ground  
OBF LIN OBF LIN  
OCS Engine oil combination sensor signal  
OCS-Sig Oil level switch signal  
OILP Oil pump valve  
Oil level Oil level switch  
Oil temperature Oil temperature sensor  
OSS Oil level switch  
PCV Rail pressure control valve  
PFBHLM Left rear axle pressure sensor ground  
PFBHLM Right front axle pressure sensor ground  
PFBHLS Left rear axle pressure sensor signal  
PFBHLS Right front axle pressure sensor signal  
PFBHLV Left rear axle pressure sensor supply  
PFBHLV Right front axle pressure sensor supply  
PFBHRM Right rear axle pressure sensor ground  
PFBHRS Right rear axle pressure sensor signal  
PFBHRV Right rear axle pressure sensor supply  
PFBVLM Left front axle pressure sensor ground  
PFBVLS Left front axle pressure sensor signal  
PFBVLV Left front axle pressure sensor supply  
Phase_A Load fuel pump, phase A  
Phase_B Load fuel pump, phase B  
Phase_C Load fuel pump, phase C  
PML_12V SPS supply (12 V)  
PML_A SPS actuation  
Power Power  
ProgKey ProgKey-Psd (star key)  
PSYSM Pressure sensor ground  
PSYSS Pressure sensor signal  
PSYSV Pressure sensor supply  
PVHLS Left rear axle plunger valve actuation  
PVHLV Left rear axle plunger valve + (lift) supply  
PVHRS Right rear axle plunger valve actuation  
PVHRV Right rear axle plunger valve + (lift) supply  
PVVLS Left front axle plunger valve actuation  
PVVLV Left front axle plunger valve + (lift) supply  
PVVRS Right front axle plunger valve actuation  
PVVRV Right front axle plunger valve + (lift) supply  
PWG (-) Pedal value sensor ground  
PWG (-) Pedal value sensor potentiometer 1 ground  
PWG (-) Pedal value sensor potentiometer 2 ground  
PWG-Sig Pedal value sensor signal  
PWG-Sig1 Pedal value sensor potentiometer 1 signal  
PWG-Sig2 Pedal value sensor potentiometer 2 signal  
PWM Cooling fan actuation  
PWM PWM signal, acquisition of set point value of ME-SFI  
QBMM Lateral acceleration sensor ground  
QBMS Lateral acceleration sensor signal  
QBMV Lateral acceleration sensor supply  
REF 1 Reference signal (temperature, frequency interface), HFM-SFI 1  
RES3 Signal 2, throttle valve potentiometer 2  
Reset Reset button  
Resv. LIN bus data feedback  
RFL RFL (backup lamp)  
RFL-L Left backup lamp  
RFL-R Right backup lamp  
RKPS Supercharger relay actuation  
RKPV Supercharger relay supply  
RX+ RX +  
RX- RX -  
RXD DEBUG RXD  
S Left FL button  
S Right FL button  
S + U rear sensors  
S1 Sensor 1  
S10 Sensor 10  
S2 Sensor 2  
S3 Sensor 3  
S4 Sensor 4  
S5 Sensor 5  
S6 Sensor 6  
S7 Sensor 7  
S8 Sensor 8  
S9 Sensor 9  
Rear SAM LIN Rear SAM LIN  
SB + Supply for seat ventilation (+)  
SB - Supply for seat ventilation (circuit 31)  
SB, BF+ Passenger-side sidebag +  
SB, BF- Passenger-side sidebag  
SB, FA+ Driver-side sidebag +  
SB, FA- Driver-side sidebag -  
SB, HL- Left rear sidebag -  
SB, HR+ Right rear sidebag +  
SB, HR- Right rear sidebag -  
SB, HL+ Left rear sidebag +  
SB-L + Control voltage for left seat ventilation  
SB-R + Control voltage for right seat ventilation  
Screen-Side Screen Side  
SDVS Suction throttle valve, actuation  
SDVV Suction throttle valve, supply  
SENM Sensor ground  
SENM1 Sensor ground 1  
SENM2 Sensor ground 2  
SENM3 Sensor ground  
SENT1 Pressure sensor SLV  
Shield Shield  
SHK + Heated seat cushion supply (circuit 30)  
SHK - Heated seat cushion supply (circuit 31)  
SHL + Backrest heater supply (circuit 30)  
SHL - Backrest heater supply (circuit 31)  
Sig. Signal  
Sig. Ant. Fond Center rear antenna signal  
Sig. Ant. MK Center console antenna signal  
Sig. Ant. door L Left door antenna signal  
Sig. Ant. door R Right door antenna signal  
Sig. H Control channel high  
Sig. LL Control channel low  
Sig. RF RF signal  
SL-li Left tail light  
SL-re Right tail light  
SLP Relay, secondary air injection pump 1  
SLP1 Secondary air injection pump relay (A_S_SLP1)  
SLV Secondary air injection pump relay actuation  
SLW LIN [local interconnect network] to solar converter (SLW)  
SP1 Specified value potentiometer 1 sensor ground (accelerator pedal module) (M_R_SP1)  
SP1M Sensor ground, set point potentiometer 1  
SP1S Signal, set point potentiometer 1  
SP2 Specified value potentiometer 2 (accelerator pedal module) (M_R_SP2)  
SP2S Signal, set point potentiometer 2  
SPHLS Left rear axle plunger check valve actuation  
SPHLV Left rear axle plunger check valve supply  
SPHRS Right rear axle plunger check valve actuation  
SPHRV Right rear axle plunger check valve supply  
Mirror L Left bixenon mirror  
Mirror R Right bixenon mirror  
SRDS Sig Intake manifold pressure sensor signal (E_A_DS)  
SRU Intake manifold changeover  
SS_BF Passenger-side front sidebag sensor (B-pillar)  
SS_FA Driver-side front sidebag sensor (B-pillar)  
Steuerltg-Luf Fan RPM control  
STR Starter relay  
STR1 Starter lock-out relay module  
STRT Starter lock-out relay module  
STRTH Starter relay, high  
STRTL Starter relay, low  
SU/SUV1 Intake manifold switchover valve  
SU1 Intake manifold switchover 1  
SU2 Intake manifold switchover 2  
SUB1 + Subwoofer coil 1 +  
SUB1- Subwoofer coil 1 -  
SUB2+ Subwoofer coil 2 +  
SUB2- Subwoofer coil 2 -  
SURHL + Left rear surround speaker +  
SURHL - Left rear surround speaker -  
SURHR + Right rear surround speaker +  
SURHR - Right rear surround speaker -  
SUV Electronic switchover valve deceleration air valve (A_S_SUV)  
SVS-Mot + Power closing motor (open +)  
SVS-Mot + Power closing motor (closed +)  
SVVLS Left front axle plunger check valve actuation  
SVVLV Left front axle plunger check valve supply  
SVVRS Right front axle plunger check valve actuation  
SVVRV Right front axle plunger check valve supply  
WAF-1 Switch_1  
WAF-3 Switch_3  
WAF-4 Switch_4  
WAF-6 Switch_6  
SWP1 Sig Specified value potentiometer 1 signal (accelerator pedal module)  
SWP2 Sig Specified value potentiometer 2 signal (accelerator pedal module)  
T2_S Intake air temperature sensor signal 2  
TAG1 Exhaust temperature sensor, right bank  
TAG2 Exhaust temperature sensor, left bank  
Tankg - Fuel level sensor 1 ground  
Tankg 1 Fuel level sensor 1 analog signal  
Tankg 2 Fuel level sensor 2 analog signal  
TANS Intake air temperature sensor  
TANSS Intake manifold intake air temperature sensor  
TANSV Intake air temperature upstream of throttle valve  
Tele-Start W-Bus  
Telematics CAN Telematics CAN  
TEV Purge valve actuation  
TG-HL Left rear door handle signal  
TG-HR Right rear door handle signal  
TG-VL Left front door handle signal  
TG-VR Right front door handle signal  
THS Coolant thermostat  
TKS Rail fuel temperature sensor  
TK_BF Door contact front passenger door  
TK_FT Driver door door contact (rotary tumbler, FT)  
TMOT Coolant temperature sensor signal  
TMOT Coolant temperature  
Rear door LIN Rear door LIN  
Front door LIN Front door LIN  
TV1 Antenna TV1  
TV2 Antenna TV2  
TV3 Antenna TV3  
TV4 Antenna TV4  
TX+ TX+  
TX- TX-  
TXD DEBUG TXD  
TXD ETC TX (Transmitter)  
TXD RS232 V24_TxD  
TZS-Mot + Additional door lock, motor  
UB Power supply  
UFS, BF Passenger-side upfront sensor  
UFS, FA Driver-side upfront sensor  
UIP 5V sensor supply, throttle valve potentiometer  
UIP Throttle valve actual value potentiometer supply A_U_UIP)  
USP1 Specified value potentiometer 1 voltage supply  
USV STH switchover valve  
VAL1 Left front axle damping valve, valve 1  
VAL2 Left front axle damping valve, valve 2  
VALV Left front axle damping valve supply  
VAR1 Right front axle damping valve, valve 1  
VAR2 Right front axle damping valve, valve 2  
VARV Right front axle damping valve supply  
VC VC  
Video in Video Input  
Video-C Video - C  
Video-GND Video - GND  
Video-Y Video - Y  
VKPS Drain valve actuation  
VKPV Drain valve supply  
VL + Left front door module speaker +  
VL - Left front door module speaker -  
VLS1 + Left front door module bass, coil 1 +  
VLS1 - Left front door module bass, coil 1 -  
VLS2 + Left front door module bass, coil 2 +  
VLS2 - Left front door module bass, coil 2 -  
VR+ Right front door module speaker +  
VR- Right front door module speaker -  
VRS1 + Right front door module bass, coil 1 +  
VRS1 - Right front door module bass, coil 1 -  
VRS2 + Right front door module bass, coil 2 +  
VRS2 - Right front door module bass, coil 2 -  
VSA Intake port shutoff actuation (O_T_VSA)  
VSPS Central accumulator charge valve actuation  
VSSAM Reserve, PWM output 9  
VVLS Left rear axle level valve actuation  
VVLS Left front axle level valve actuation  
VVLV Level valves and central accumulator charge valve supply  
VVRS Right level valve actuation  
V_V_PERMBAT Permanent positive  
Wake-up Wake Up  
WB, VL+ Left front windowbag +  
WB, VL- Left front windowbag -  
WB, VR+ Right front windowbag +  
WB, VR- Right front windowbag -  
WBS-In Hazard warning flasher switch In  
WBS-LED Hazard warning flasher switch LED  
WBS-Out Hazard warning flasher switch Out  
WGV1 Wastegate valve  
WGV1 Wastegate valve, right bank  
WTS Sig Water temperature sensor signal  
ZAMHR Right rear axle acceleration sensor ground  
ZAMVL Left front axle acceleration sensor ground  
ZAMVL Right front axle acceleration sensor ground  
ZASHR Right rear axle acceleration sensor signal  
ZASVL Left front axle acceleration sensor signal  
ZASVL Right front axle acceleration sensor signal  
ZAVHR Right rear axle acceleration sensor supply  
ZAVVL Right front axle acceleration sensor supply  
ZAWL Left front axle acceleration sensor supply  
COU [ZBE] LIN COU [ZBE] LIN  
ZDSPM Central accumulator pressure sensor ground  
ZDSPS Central accumulator pressure sensor signal  
ZDSPV Central accumulator pressure sensor supply  
Central CAN Central CAN  
ZME+ Metering unit  
ZUE 7 Ignition signal 7, cyl. 7 ignition coil  
ZUE 8 Ignition signal 8, cyl. 8 ignition coil  
ZUE1 Ignition signal 1 ignition coil cyl. 1  
ZUE10_ZYL 12 Ignition cylinder 12, first plug  
ZUE11_ZYL 8 Ignition cylinder 8, first plug  
ZUE12_ZYL 10 Ignition cylinder 10, first plug  
ZUE1_ZYL 1 Ignition cylinder 1, first plug  
ZUE2 Ignition signal 2 ignition coil cyl. 4  
ZUE2_ZYL 5 Ignition cylinder 5, first plug  
ZUE3 Ignition signal 3 ignition coil cyl. 3  
ZUE3_ZYL 3 Ignition cylinder 3, first plug  
ZUE4 Ignition signal 4 ignition coil cyl. 6  
ZUE4_ZYL 6 Ignition cylinder 6, first plug  
ZUE5 Ignition signal 5, ignition coil cyl. 2  
ZUE5_ZYL 2 Ignition cylinder 2, first plug  
ZUE6 Ignition signal 6 ignition coil cyl. 5  
ZUE6_ZYL 4 Ignition cylinder 4, first plug  
ZUE7_ZYL 7 Ignition cylinder 7, first plug  
ZUE8_ZYL 11 Ignition cylinder 11, first plug  
ZUE9_ZYL 9 Ignition cylinder 9, first plug  
ZV-Mot + Central locking motor  
ZV1 Ignition offset signal 1  
ZV2 Ignition offset signal 2  
ZW1-Sig Ignition change signal 1  
ZW2-Sig Ignition change signal 2