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

Abbreviation Designation Notes
(-) SH Ground (rear sensors)  
(-) SV Ground (front sensors)  
(+) Positive  
(+) SH Rear sensor supply  
(+) SV Front sensor supply  
(+) Closed Trunk lid drive motor CLOSED (+)  
(-) Minus  
15 Switched positive  
15R Switched positive, in ignition position 1, 2 & 3  
288V+ High voltage, 288 Volt Plus  
288V- High voltage, 288 Volt Minus  
30 Battery voltage, positive (continuous positive)  
30c 12 V circuit 30c  
31 Return line to battery negative or ground, direct  
49 left Left turn signal  
49 right Right turn signal  
50 Starter control (direct)  
54 Stop lamp  
56a L Left main beam  
56a R Right main beam  
56b left Left low beam  
56b right Right low beam  
58 left Left standing lamp/tail lamp  
58 right Right standing lamp/tail lamp  
58L Left side light  
58R Right side light  
5V Supply 5V  
5VG2F Sensor voltage for tank pressure sensor  
5VSP1 Sensor voltage (5 V), accelerator pedal sensor  
87D1 Circuit 87 fused  
87D2 Circuit 87 fused  
87D3 Circuit 87 fused  
AAV Tank system shutoff valve actuation  
AB1, BF Front passenger airbag 1  
AB1, FA Driver airbag 1  
AB2, BF Front passenger airbag 2  
AB2, FA Driver airbag 2  
AB2, FA+ Airbag 2, driver +  
AB2, FA- Airbag 2, driver -  
AB2, BF+ Front passenger airbag 2 +  
AB2, BF- Front passenger airbag 2 -  
ABLV Drain valve positive  
AC_Chiller High-voltage battery cooling shutoff valve  
AC_Evaporator Front evaporator shutoff valve  
AGK2 Tank leakage pump diagnostic module  
AGR Exhaust gas recirculation  
AHK IO Trailer hitch OK  
AHK NIO Trailer hitch not OK  
AKF Actuation of purging switchover valve  
ACSR [AKSE] Automatic child seat recognition  
AL(+) Exit lamp current supply  
Ant. Antenna  
Antenna Antenna signal  
Audio L Left audio signal  
Audio R Right audio signal  
Audio shield Audio shielding  
OPEN Running direction open  
AUX_GND Interface shielding  
AUX_L Left interface  
AUX_R Right interface  
AUX_Shield Interface shielding  
A_EKA_l Left intake port shutoff actuation  
A_EKA_r Right intake port shutoff actuation  
A_P_ZUE1 Actuation
Cylinder 1 ignition coil (T1/1)
 
A_P_ZUE2 Actuation
Cylinder 2 ignition coil (T1/2)
 
A_P_ZUE3 Actuation
Cylinder 3 ignition coil (T1/3)
 
A_P_ZUE4 Actuation
Cylinder 4 ignition coil (T1/4)
 
A_P_ZUE5 Actuation
Cylinder 5 ignition coil (T1/5)
 
A_P_ZUE6 Actuation
Cylinder 6 ignition coil (T1/6)
 
A_P_ZUE7 Actuation
Cylinder 7 ignition coil (T1/7)
 
A_P_ZUE8 Actuation
Cylinder 8 ignition coil (T1/8)
 
A_S_DK Actuation
Intake manifold tumble flap switchover valve (Y22/9)
 
A_S_SLV Actuation
Air pump switchover valve (Y32)
 
A_T_DCM Ground
Throttle valve actuator motor (M16/6m1)
 
A_T_DCP Supply voltage
Throttle valve actuator motor (M16/6m1)
 
A_T_KWTHS Actuation
Three-disk thermostat valve (Y110)
 
A_T_LSH1HK Oxygen sensor heater actuation
Right O2 sensor downstream of the catalytic converter (G3/6)
 
A_T_LSH2HK Oxygen sensor heater actuation
Left O2 sensor downstream of the catalytic converter (G3/5)
 
A_T_LSHVK1 Oxygen sensor heater actuation
Right O2 sensor upstream of the catalytic converter (G3/4)
 
A_T_LSHVK2 Oxygen sensor heater actuation
Left O2 sensor upstream of the catalytic converter (G3/3)
 
A_T_NWSA1 Actuation (ground)
Right exhaust camshaft solenoid (Y49/7)
 
A_T_NWSA2 Actuation (ground)
Left exhaust camshaft solenoid (Y49/6)
 
A_T_NWSE1 Actuation (ground)
Right intake camshaft solenoid (Y49/5)
 
A_T_NWSE2 Actuation (ground)
Left intake camshaft solenoid (Y49/4)
 
A_T_SU_SUV1 Actuation
Variable intake manifold changeover valve (Y22/6)
 
A_U_5VG1M Sensor voltage (5 V)
Crankshaft Hall sensor (B70)
 
A_U_5VG2M Sensor voltage (5 V)
Pressure sensor (intake manifold air pressure) (B28), Left intake manifold tumble flap position sensor (B28/9) Right intake manifold tumble flap position sensor (B28/10)
 
A_U_LSU1VM Virtual ground
Right O2 sensor upstream of the catalytic converter (G3/4)
 
A_U_LSU2VM Virtual ground
Left O2 sensor upstream of the catalytic converter (G3/3)
 
A_U_UIP Sensor voltage (5 V)
Throttle valve, actual value potentiometer 1 (M16/6r1)
Throttle valve, actual value potentiometer 2 (M16/6r2)
 
BAV_12V BAS solenoid valve ground  
BAV_5V Brake assistant solenoid valve supply voltage  
BAV_A Brake assistant MV  
BBV HR Right rear brake wear  
BBV VR Right front brake wear  
Bel. Lighting  
BLS_12V Hybrid brake light switch supply voltage  
BLS_H Hybrid brake light switch signal  
BLS_M Hybrid brake light switch ground  
BT Bluetooth  
CAK BF Crash-active head restraint, front passenger  
CAK FA Crash-active head restraint, driver  
CAN-A H Telematics CAN HIGH  
CAN-A L Telematics CAN LOW  
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-H H Vehicle dynamics CAN High  
CAN-H L Vehicle dynamics CAN Low  
Comand contactor Main protector input  
Crash Crash signal  
CVH Vent line heater element  
Data Dataline  
DCM Ground, front throttle valve actuator motor  
DCP Supply voltage, throttle valve actuator motor  
DDS Difference pressure sensor signal  
DF VL Left front rotational frequency  
DFHL_S Left rear rpm sensor signal  
DFHR_S Right rear rpm sensor signal  
DFS sig. Rotary tumbler switch signal  
DFVL_R Right front rpm sensor signal  
DFVL_S Left front rpm sensor signal  
DFVR_S Front right rpm sensor signal  
Diag. Diagnosis  
DIR Rotation direction  
DK Intake manifold tumble flap switchover valve actuation  
DK1 Sensor signal for right intake manifold tumble flap position sensor  
DK2 Sensor signal for left intake manifold tumble flap position sensor  
DPF Diesel particulate filter  
DRS Pressure sensor ( ), intake manifold air pressure  
DRS (-) Pressure sensor negative  
DRS (5V) Pressure sensor voltage supply  
DRS_S Pressure sensor signal  
DRV Pressure control valve  
DST Sensor signal, tank pressure sensor  
DV 1 Damper valve 1  
DV 2 Damper valve 2  
DVV Damper valve supply  
EC LED E-call LED  
ATA ATA [EDW] signal  
EKA-0 Intake port shutoff actuation  
EKPR Signal "Fuel pump ON"  
EKS 1 Obstruction sensor signal  
EKS 2 Obstruction sensor signal  
EPOS LR Left rear end position  
EPOS RR Right rear end position  
EPOS LF Left front end position  
EPOS RF Right front end position  
ETC Two-disk thermostat heating element  
EV1 Injection valve 1  
EV10 Injection valve 10  
EV11 Injection valve 11  
EV12 Injection valve 12  
EV2 Injection valve 2  
EV3 Injection valve 3  
EV4 Injection valve 4  
EV5 Injection valve 5  
EV6 Injection valve 6  
EV7 Injection valve 7  
EV8 Injection valve 8  
EV9 Injection valve 9  
EXTS1 Exhaust temperature signal in left oxidization catalytic converter  
EXTS3 Temperature sensor upstream of SCR catalytic converter  
EXTS4 Temperature sensor ground upstream of SCR catalytic converter  
E_A_IP1S Sensor signal
Throttle valve, actual value potentiometer 1 (M16/6r1)
 
E_A_IP2S Sensor signal
Throttle valve, actual value potentiometer 2 (M16/6r2)
 
E_A_KS1A Sensor signal A
Knock sensor 1, on the right (A16/1)
 
E_A_KS1B Sensor signal B
Knock sensor 1, on the right (A16/1)
 
E_A_KS_2A Sensor signal A
Knock sensor 2, on the left (A16/2)
 
E_A_KS_2B Sensor signal B
Knock sensor 2, on the left (A16/2)
 
E_A_LS1HK Sensor signal
Right O2 sensor downstream of the catalytic converter (G3/6)
 
E_A_LS2HK Sensor signal
Left O2 sensor downstream of the catalytic converter (G3/5)
 
E_A_LSU1A Trimming resistor
Right O2 sensor upstream of the catalytic converter (G3/4)
 
E_A_LSU1P Pump current
Right O2 sensor upstream of the catalytic converter (G3/4)
 
E_A_LSU1UN Sensor signal
Right O2 sensor upstream of the catalytic converter (G3/4)
 
E_A_LSU2IA Trimming resistor
Left O2 sensor upstream of the catalytic converter (G3/3)
 
E_A_LSU2IP Pump current
Left O2 sensor upstream of the catalytic converter (G3/3)
 
E_A_LSU2UN Sensor signal
Left O2 sensor upstream of the catalytic converter (G3/3)
 
E_A_TANS Sensor signal
Intake air temperature sensor (B2/5b1)
 
E_A_TMOT Sensor signal
Coolant temperature sensor (B11/4)
 
E_F_HFM1 Sensor signal
Hot film mass air flow sensor (B2/5)
 
E_F_KWGA Sensor signal
Crankshaft Hall sensor (B70)
 
E_F_KWGB Sensor ground
Crankshaft Hall sensor (B70)
 
E_F_NWGA1 Sensor signal
RH exhaust camshaft Hall sensor (B6/7)
 
E_F_NWGA2 Sensor signal
Left exhaust camshaft Hall sensor (B6/6)
 
E_F_NWGE1 Sensor signal
Right intake camshaft Hall sensor (B6/5)
 
E_F_NWGE2 Sensor signal
LH intake camshaft Hall sensor (B6/4)
 
E_F_REF1 Reference signal
Hot film mass air flow sensor (B2/5)
 
E_S_DK1 Sensor signal
Right intake manifold tumble flap position sensor (B28/10)
 
E_S_FSOEL Signal
Oil level check switch (S43)
 
FAF Fanfare horns  
FH H Power window raising  
FH T Power window lowering  
FHH Power window motor (+raise)  
FHT Lower power window (+ low)  
FL Rear lamp  
FL (+) Footwell lamp, positive  
FLWTR Water level switch signal (only in countries with poor-quality fuel)  
FSMOEL Actual status check signal switch Afa  
GKB BF Front passenger belt force limiter  
GKB FA Driver belt force limiter  
GND Shielding  
GPS GPS signal  
GP_L1 Electrical transmission oil pump 1 supply voltage  
GP_L2 Electrical transmission oil pump 2 supply voltage  
GP_M Electrical transmission oil pump ground  
GS, BF Passenger emergency tensioning retractor  
GS, FA Driver emergency tensioning retractor  
GS, HL Left rear emergency belt tensioner  
GS, HR Right rear emergency belt tensioner  
H (+) Hall sensor voltage supply  
H (-) Hall sensor ground  
H Sig.1 Hall sensor signal 1  
H sig.2 Hall sensor signal 2  
HAV Actuation of heating system shutoff valve  
HDF Trunk lid remote opening  
HFM-SFI Hot film mass air flow sensor, ground  
HFM sequential multipoint fuel injection/ignition system-0 Hot film mass air flow sensor, ground  
HFM sequential multipoint fuel injection/ignition system-1 Hot film mass air flow sensor, signal  
HFM sequential multipoint fuel injection/ignition system-2 Hot film mass air flow sensor, supply (+5V)  
HFM1_M Hot film mass air flow sensor ground AfA  
HFM1_S Hot film mass air flow sensor signal AfA  
HHS Rear window defroster  
RR Right rear  
HS Comm Enable Activation of main protection  
HVIL LOOP In High-voltage interlock line loop input  
HVIL+ High-voltage interlock positive  
HVIL- High-voltage interlock minus  
HVIL_In High-voltage interlock signal input  
HVIL_Out High-voltage interlock signal output  
Hybrid Accy Call up hybrid  
IATS3 Exhaust gas recirculation temperature sensor signal  
IC LED Info LED  
IC S Information button  
IDC S Tele diagnosis button  
Inj. H Injector, high  
Inj. LL Injector, low  
IP1S Sensor signal for throttle valve actual value potentiometer  
IP2S Sensor signal for throttle valve actual value potentiometer  
IPM Throttle valve actual value potentiometer ground  
IPS2 Sensor signal for throttle valve actual value potentiometer 2  
ISM Intelligent servo module  
KDP Fuel metering pump  
KHZ Fuel heater  
KL (+) Luggage compartment lamp, positive  
KS Knock sensor  
KS_M Sensor signal B, knock sensor  
KS_S Sensor signal A, knock sensor  
KTS_S Fuel temperature sensor signal  
Crankshaft signal Signal, crankshaft rpm from ME-SFI control unit  
KWDGA Crankshaft signal 1  
KWDGB Crankshaft signal 2  
KWG Crankshaft sensor  
KWR Signal "Motor speed"  
KWTHS Three-disk thermostat valve actuation  
LD + Open roof motor  
LD - Close roof motor  
LDF-1 Boost pressure sensor signal  
LDR Actuation of boost pressure positioner  
LED_FU LED function  
LFP Power steering pump  
LHP Power steering pump  
LHZ Heated steering wheel  
LIN B5 KLA-LIN  
LIN E1 Steering LIN  
LL L Left reading lamp  
LL R Right reading lamp  
LS1 Release switch closes  
LS1HK Oxygen sensor 1 down stream of three way catalytic converter  
LS1P Oxygen sensor 1 pump current  
LS2 Release switch opens  
LS2HK Oxygen sensor 2 down stream of three way catalytic converter  
LS2VK Oxygen sensor 2 upstream of catalytic converter  
LSA Release switch  
LSH1HK Oxygen sensor heater downstream of TWC 1 (right)  
LSH2HK Oxygen sensor heater downstream of TWC 2 (left)  
LSH2VK Actuation of oxygen sensor heater for 02 probe, left, upstream of catalytic converter  
LSH2_VK Oxygen sensor heater LSF 2 upstream of catalytic converter  
LSHIHK Actuation of oxygen sensor heater for 02 probe, right  
LSHK Oxygen sensor downstream of TWC  
Lsp. + Speaker voltage supply  
Lsp. - Speaker ground  
LSU1Ia Trimming resistor for 02 probe, right, upstream of catalytic converter  
LSU1IP Pump current for 02 probe, right, upstream of catalytic converter  
LSU1UN Sensor signal for 02 probe, right, upstream of catalytic converter  
LSU1VK Actuation of oxygen sensor heater O2 -sensor (right), upstream of CAT  
LSU1VM Virtual ground for 02 probe, right, upstream of catalytic converter  
LSU1VN Sensor signal O2 sensor (right), upsteam of CAT  
LSU2IA Trimming resistor for 02 probe, left, upstream of catalytic converter  
LSU2IP Pump current for 02 probe, left, upstream of catalytic converter  
LSU2UN Sensor signal for 02 probe, left, upstream of catalytic converter  
LSU2VK Actuation of oxygen sensor heater O2 -sensor (right), upstream of CAT  
LSU2VM Virtual ground for 02 probe, left  
LSU2VN Sensor signal O2 sensor (right), upsteam of CAT  
LUES Fan control  
M1_L1 Hight-voltage supply, electrical machine 1  
M1_L2 High-voltage supply, electrical machine 1  
M1_M Ground, electrical machine 1  
M2_L1 High-voltage supply, electrical machine 2  
M2_L2 High-voltage supply, electrical machine 2  
M2_M Ground, electrical machine 2  
MHK ATA engine hood contact  
MHKKUP1 Hybrid engine hood contact switch signal  
MIC out Microphone output  
Mic. (+) Microphone positive  
Mic. (-) Microphone negative  
MIC1 Microphone 1  
MIC2 Microphone 2  
MIC3 Microphone 3  
MIC_GND Microphone ground  
Mot A Motor A  
Mot B Motor B  
Mute Muting  
M_R_HFM1 Sensor ground
Hot film mass air flow sensor (B2/5)
 
M_R_IPM Ground
Throttle valve, actual value potentiometer 1 (M16/6r1)
Throttle valve, actual value potentiometer 2 (M16/6r2)
 
M_R_LSHK Ground
Left O2 sensor downstream of the catalytic converter (G3/5),
Right O2 sensor downstream of the catalytic converter (G3/6)
 
M_R_SENM1 Sensor ground
Right intake camshaft Hall sensor (B6/5)
Right exhaust camshaft Hall sensor (B6/7)
Pressure sensor (B28) (intake manifold air pressure),
Right intake manifold tumble flap position sensor (B28/10)
 
M_R_SENM2 Sensor ground
Left intake camshaft Hall sensor (B6/4)
Left exhaust camshaft Hall sensor (B6/6)
Coolant temperature sensor (B11/4),
Left intake manifold tumble flap position sensor (B28/9)
 
NC Not wired  
NF Low frequency  
NF-L Low frequency, left  
NF-R Low frequency, right  
NSL Rear fog lamp  
NWG Sensor ground for intake camshaft Hall sensor  
NWG A1 Camshaft sensor exhaust 1  
NWG A2 Camshaft sensor exhaust 2  
NWG E1 Camshaft sensor intake 1  
NWG E2 Camshaft sensor intake 2  
NWGA1 Sensor signal, Hall sensor output, right camshaft  
NWGA2 Sensor signal for exhaust camshaft Hall sensor  
NWGE1 Sensor signal, Hall sensor input, right camshaft  
NWGE2 Sensor signal for intake camshaft Hall sensor  
NWG_S Camshaft sensor signal (intake)  
NWS E2 Actuation (ground), left inlet camshaft solenoid  
NWSA 1 Actuation (ground), right exhaust camshaft solenoid  
NWSA 2 Actuation (ground), left exhaust camshaft solenoid  
NWSA2 Actuation (ground), left exhaust camshaft solenoid  
ODS Oil pressure switch  
Oil (+) Oil sensor supply  
Oil (-) Oil sensor ground  
Oil - S Oil sensor signal  
OILP Engine oil pump valve actuation  
OSS Oil level switch  
PAS_5V Pedal angle sensor voltage  
PAS_M Pedal angle sensor ground  
PAS_SIG1 Pedal angle sensor signal 1  
PAS_SIG2 Pedal angle sensor signal 2  
SPS Speed-sensitive power steering  
PS60_5V Pressure sensor, brake pressure simulator valve, sensor voltage  
PS60_M Pressure valve brake pressure simulator  
PS60_SIG Sensor signal, pressure sensor for brake pressure simulator valve  
PWM Pulse width modulation signal for coolant pump for high-voltage battery  
PWR Pedal value sensor  
RDS Rail pressure sensor signal  
REF1 Reference signal, hot film mass air flow meter  
Rel. Relays  
RES OUTPUT LED, trailer hitch OK/not OK  
RES_M2 (+) Coordinate converter, electrical machine 2, supply  
RES_M2 (-) Coordinate converter, electrical machine 2, ground  
Resolver_S1_M1 Coordinate converter signal 1, electric machine 1  
Resolver_S1_M2 Coordinate converter signal 1, electric machine 2  
Resolver_S2_M1 Coordinate converter signal 2, electric machine 1  
Resolver_S2_M2 Coordinate converter signal 2, electric machine 2  
Resolver_S3_M1 Coordinate converter signal 3, electric machine 1  
Resolver_S3_M2 Coordinate converter signal 3, electric machine 2  
Resolver_S4_M1 Coordinate converter signal 4, electric machine 1  
Resolver_S4_M2 Coordinate converter signal 4, electric machine 2  
RES M1 (-) Coordinate converter, electrical machine 1, ground  
RES M1(+) Coordinate converter, electrical machine 1, supply  
RFL Reversing lamp  
RWI Wiper relay  
RWT Rear-end door  
RWTL Rear end door light  
RX-H Receive, high  
RX-L Receive, low  
S 1 V Front sensor 1  
S 10 H Rear sensor 10  
S 2 V Front sensor 2  
S 3 V Front sensor 3  
S 4 V Front sensor 4  
S 5 V Front sensor 5  
S 6 V Front sensor 6  
S 7 H Rear sensor 7  
S 8 H Rear sensor 8  
S 9 H Rear sensor 9  
SAT Satellite antenna  
SAV_12V Brake pressure simulator valve  
SAV_A Brake pressure simulator valve  
SB, BF Front passenger sidebag  
SB, FA Driver sidebag  
SB, HL Left rear sidebag  
SB, HR Right rear sidebag  
SENF1 Ground, tank pressure sensor  
SENM3 Sensor ground for coolant temperature sensor  
SENM5 Sensor ground for intake manifold pressure sensor  
SF BF Front passenger frontal acceleration sensor  
SF FA Driver frontal acceleration sensor  
Sig. Signal  
Sig_KW_Chiller Actuation of two-way valve high-voltage-battery cooling system/high-voltage battery cooling system  
Sig_KW_Radiator Actuation of high-voltage battery cooling two-way valve, radiator  
SIL Left seat  
SIR Right seat  
SK Lock contact  
SLP Secondary air pump  
SLV Secondary air pump valve/air injection  
SP1S Sensor signal 1, accelerator pedal sensor  
SP2 Signal ground 2, accelerator pedal sensor  
SP2S Sensor signal 2, accelerator pedal sensor  
SRL (+) Surround left Positive  
SRL (-) Surround left Ground  
SRR (+) Surround right Positive  
SSR (-) Surround right Ground  
SS_BF Passenger-side sidebag and windowbag sensor  
SS_F Driver sidebag and windowbag sensor  
SU Actuation of intake manifold switchover valve  
SW (+) Subwoofer positive  
SW (-) Subwoofer ground  
T2_S Charge air temperature sensor (T2) signal  
TA Push-button  
TA left Left button  
TA right Right button  
TAG 1 Signal, exhaust gas temperature  
TAG 2 Signal, exhaust gas temperature  
TANS Hot film mass air flow sensor  
TANSI Sensor signal, intake air temperature sensor  
Temp. Temperature  
TEV Heater, tank leakage system diagnostic module  
TG + Fuel tank sensor +  
TG + L Left fuel level sensor  
TG + R Right fuel level sensor  
TG - Fuel tank sensor -  
THS Thermostat  
TIG_L Left inside door handle  
TIG_R Right inside door handle  
TK Door contact  
TKKH Sensor signal for low-temperature circuit temperature sensor  
TKWH Sensor signal for low-temperature circuit temperature sensor  
TMOT Engine temperature sensor  
TM_GND_M1 Ground temperature sensor, electrical machine 1  
TM_GND_M2 Ground temperature sensor, electrical machine 2  
TM_M1 Input temperature sensor, electrical machine 1  
TM_M2 Input temperature sensor, electrical machine 2  
TOEL Oil temperature  
TT Sensor signal, pressure and temperature sensor, fuel tank  
TUKS Door actuator  
TX-H Transmit, high  
TX-L Transmit, low  
U Power supply  
U SW U switch  
UBRE Voltage supply circuit 87  
UBRM1 Voltage supply circuit 87  
UIP Sensor voltage for throttle valve actual value potentiometer  
V (-) Valve negative  
VAC_M Sensor ground, vacuum sensor  
VAC_PUMP_A Relay, vacuum pump, positive  
VAC_PUMP_M Relay, vacuum pump, negative  
VAC_PUMP_MON Diagnosis, vacuum pump  
VAC_SIG1 Sensor signal 1, vacuum sensor  
VAC_SIG2 Sensor signal 2, vacuum sensor  
VAC_SV Sensor voltage, vacuum sensor  
VCC Power supply  
VL Left front  
VM Front center  
VR Right front wheel antenna  
Wake-up MOST bus cut-in signal  
WB, L Left window airbag  
WB, R Right window airbag  
WE Wake-up input  
WI 1 Wiper 1  
WI 2 Wiper 2  
WPH Rear washer pump, positive  
WPV Front washer pump, positive  
WSH Washer nozzle heater  
ZF Intermediate frequency  
ZLV Central charge valve  
ZME+ Metering unit (ZME) +12V supply  
ZME_L Metering unit (ZME) low-side  
CLOSED Running direction closed  
ZUE 1 Ignition coil 1  
ZUE 10 Ignition coil 10  
ZUE 11 Ignition coil 11  
ZUE 12 Ignition coil 12  
ZUE 2 Ignition coil 2  
ZUE 3 Ignition coil 3  
ZUE 4 Ignition coil 4  
ZUE 5 Ignition coil 5  
ZUE 6 Ignition coil 6  
ZUE 7 Ignition coil 7  
ZUE 8 Ignition coil 8  
ZUE 9 Ignition coil 9  
ZV ERH Central locking system for spare tire carrier  
ZWP Additional water pump