how to read wiring diagram for passenger car
1. Starting & charging system
- battery, starter motor, generator & nsbu switch circuit : (diesel / gasoline)
- ignition switch circuit
- power mode circuit
2. Ecm (engine control module)
- battery power supply, ground, ei system, generator & ckp sensor circuit
- fuel pump, injector & heated o2 sensor circuit
- etc module, sensor (map, ect, knock, acp & accelerator pedal), oil pressure switch & legr circuit
- evap canister purge solenoid, sensor (cmp,accelerator pedal,fuel level) & clutch switch circuit
- brake switch, back up switch, nsbu switch circuit
- dlc (data link connector) circuit
3. Ecm (engine control module) : (2.0 diesel)
- battery power supply, ground, glow plug control unit, fuel heater, generator &
ckp sensor circuit
- injector, fuel pump & sensor (exhaust gas temperature, fuel temperature)
circuit
- sensor (wif, maf/iat, dpf pressure, rail pressure, ect,acp), switch (oil pressure),
rail pressure control valve & fuel metering unit circuit
- sensor (accelerator pedal, boost pressure, fuel level,cmp), actuator
(throttle plate, boost pressure), clutch switch & egr valve circuit
- brake switch, back up switch & nsbu switch circuit
- dlc (data link connector) circuit
4. Tcm (transmission control module)
- power supply, ground, brake switch & solenoid valve circuit
- sensor (input speed,output speed), nsbu switch & high speed can circuit
- gear shift lever, winter mode switch & cluster circuit
5. Bcm (body control module)
- power supply, ground, ignition switch circuit
- power mode, rain sensor & rear wiper switch circuit
- head lamp, illumination, front/rear fog, brake switch & dimmer control circuit
- interior lamp, back up lamp, gear shift level, switch (winter mode, cruise, hazard,
turn signal) circuit
- front wiper, lift gate wiper, rain sensor & evap core temp. Sensor circuit
- door lock/unlock, horn, door latch, parking assist & switch (park brake, hood open, door lock) circuit
- power window, lift gate glass, coupling control module, esp switch & manual a/c controller circuit
6. Air conditioner
- air conditioner control switch & blower motor circuit
- intake motor, mode motor & evap core temp. Sensor circuit
7. Fatc (full automatic temperature control)
- motor (blower, intake, mode, temperature) & power module circuit
- sensor (aqs, duct temp., evap core temp., incar, combi), ecm & bcm circuit
8. Air conditioner compressor circuit
9. Radiator cooling fan circuit
- cooling fan circuit : diesel / gasoline
10. Ptc–heater circuit : diesel
11. Head lamp circuit
- w/o head lamp leveling
- w/ head lamp leveling
12. Head lamp switch circuit
- w/o auto light
- w/ auto light
13. Illumination circuit
- illumination, dimmer control switch & heating mat switch circuit
- lamp (license plate & front/rear parking) circuit
14. Front & rear fog lamp circuit
15. Hazard & turn signal lamp circuit
16. Stop lamp, center high mount stop lamp (chmsl), back up lamp & ecm mirror
circuit
17. Interior lamp circuit
- lamps (map, room, door step, sunvisor, luggage, glove box, key hole) circuit
18. Wiper circuit
- front wiper circuit
- lift gate wiper circuit & head lamp washer circuit
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