Wiring Diagram VW POLO 2003 - Bosch Motronic MP9 Control Unit - ignition system - knock sensor - engine RPM sender
N152 | Ignition transformer |
N157 | Ignition transformer output stage |
O | Ignition distributor |
P | Spark plug connector |
Q | Spark plugs |
G40 | Hall sender |
J257 | Mono-Motronic control unit, in plenum chamber (45-pin connector) |
G61 | Knock sensor |
S | Starter (50) |
ACH | To earth crimp, for Aircon crimp |
D | Earth crimp in engine wiring harness |
220 | Earth connection (31) in engine wiring harness |
330 | ECU earth crimp for senders, in the engine wiring harness |
Wiring Diagram VW POLO 2003 - Bosch Motronic MP9 Control Unit - senders for intake manifold and coolant temperature - throttle valve potentiometer
G69 | Throttle valve potentiometer |
G71 | Pressure sensor |
G72 | Intake manifold temperature sensor |
G62 | Coolant temperature sender |
G2 | Coolant temperature sender |
J257 | Mono-Motronic control unit, in plenum chamber (45-pin connector) |
S18 | Fuse - 20 amp |
J17 | Fuel pump relay |
TV2 | Junction box for terminal 30 above relay plate |
TE/1 | Single connector - earth rossette |
H | To front harness connector, 18-pin |
T18/ | 18-pin connector |
K2/ | To 2-pin connector (Right Indicator) |
J2/ | To 2-pin connector (Left Indicator) |
TC | To 6-pin connector (cooling fan module, non Aircon models only) |
220 | Earth connection (31) in engine wiring harness |
330 | ECU earth crimp for sensors, in the engine wiring harness |
Wiring Diagram VW POLO 2003 - Bosch Motronic MP9 Control Unit - injectors - thermo switch for run-on fan
J363 | Power supply relay for Motronic control unit |
J257 | Mono-Motronic control unit, in plenum chamber (45-pin connector) |
G22 | Speedo sender |
F87 | Thermo switch for run-on fan |
N30 | Injector Cyl. 1 |
N31 | Injector Cyl. 2 |
N32 | Injector Cyl. 3 |
N33 | Injector Cyl. 4 |
T6/ | Connector 6-pin, injector rail |
T9/4 | Aircon connector 9-pin |
T8/2 | Transponder connection 6-pin |
Ta | Single connection in engine compartment |
Tb | 10-pin connector (cooling fan module, Aircon models only) |
TC | 6-pin connector (cooling fan module, Non Aircon models only) |
G3 | Positive (+) connector in cable sleeve injectors |
Wiring Diagram VW POLO 2003 - Oil pressure switch - sender for speedometer
G22 | Speedo sender |
F1 | Oil pressure switch (0.3 bar) |
F22 | Oil pressure switch (1.8 bar) |
Tg/ | To transponder, 6-pin connector |
221 | Earth connecion (engine earth) in engine wiring harness |
230 | Positive (15) crimp in engine hiring harness |
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