DAEWOO M-150 BL2
SECTION 1E
ENGINE ELECTRICALCAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when atool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cablewill help prevent personal injury and damage to the vehicle. The ignition must also be in B unless otherwisenoted.
TABLE OF CONTENTSDescription and Operation 1E-2. . . . . . . . . . . . . . . . . .
Battery 1E-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ratings 1E-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reserve Capacity 1E-2. . . . . . . . . . . . . . . . . . . . . . . . . Cold Cranking Amperage 1E-2. . . . . . . . . . . . . . . . . . . Built-In Hydrometer 1E-2. . . . . . . . . . . . . . . . . . . . . . . . Charging Procedure 1E-3. . . . . . . . . . . . . . . . . . . . . . . Charging Time Required 1E-3. . . . . . . . . . . . . . . . . . . . Charging a Completely Discharged Battery
(Off the Vehicle) 1E-3. . . . . . . . . . . . . . . . . . . . . . . . . Jump Starting Procedure 1E-3. . . . . . . . . . . . . . . . . . . Generator 1E-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Charging System 1E-4. . . . . . . . . . . . . . . . . . . . . . . . . . Starter 1E-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starting System 1E-4. . . . . . . . . . . . . . . . . . . . . . . . . . . Distributor 1E-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ignition Coil 1E-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spark Plug 1E-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Locator 1E-6. . . . . . . . . . . . . . . . . . . . . . . . Starting System 1E-6. . . . . . . . . . . . . . . . . . . . . . . . . . . Charging System (A-type: MANDO) 1E-7. . . . . . . . . . Charging System (B-type: DAC) 1E-8. . . . . . . . . . . . . Ignition System 1E-9. . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Information and Procedure 1E-10. . . . . . Ignition System 1E-10. . . . . . . . . . . . . . . . . . . . . . . . . . Battery Load Test 1E-12. . . . . . . . . . . . . . . . . . . . . . . .
Generator Output Test 1E-12. . . . . . . . . . . . . . . . . . . . Generator System Check 1E-13. . . . . . . . . . . . . . . . . .
Repair Instructions 1E-14. . . . . . . . . . . . . . . . . . . . . . . . On-Vehicle Service 1E-14. . . . . . . . . . . . . . . . . . . . . . . . .
Starter 1E-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Generator 1E-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Battery 1E-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Distributor 1E-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ignition Coil 1E-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Repair 1E-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starter Motor 1E-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . Generator (A-type: MANDO) 1E-24. . . . . . . . . . . . . . . Generator (B-type: DAC) 1E-29. . . . . . . . . . . . . . . . . . Distributor Assembly 1E-34. . . . . . . . . . . . . . . . . . . . . .
Schematic and Routing Diagrams 1E-37. . . . . . . . . . Starting System 1E-37. . . . . . . . . . . . . . . . . . . . . . . . . . Charging System 1E-38. . . . . . . . . . . . . . . . . . . . . . . . . Ignition System Circuit Tipical 1E-39. . . . . . . . . . . . Ignition System Circuit Euro III 1E-40. . . . . . . . . . .
Specifications 1E-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . Starter Specifications 1E-41. . . . . . . . . . . . . . . . . . . . . Generator Specifications 1E-41. . . . . . . . . . . . . . . . . . Ignition System Specifications 1E-41. . . . . . . . . . . . . . Battery Specifications 1E-41. . . . . . . . . . . . . . . . . . . . . Fastener Tightening Specifications 1E-42. . . . . . . . . .
Daewoo Matiz 2003
1E 2 ENGINE ELECTRICAL
DAEWOO M-150 BL2
DESCRIPTION AND OPERATIONBATTERYThe battery has three major functions in the electricalsystem. First, the battery provides a source of energyfor cranking the engine. Second, the battery acts as avoltage stabilizer for the electrical system. Finally, thebattery can, for a limited time, provide energy when theelectrical demand exceeds the output of the generator.The sealed battery is standard on all cars. There are novent plugs in the cover. The battery is completelysealed, except for two small vent holes in the sides.These vent holes allow the small amount of gas pro-duced in the battery to escape.The sealed battery has the following advantages overconventional batteries: No water need be added for the life of the battery. It is protected against overcharge. If too much volt-
age is applied to the battery, it will not accept as muchcurrent as a conventional battery. In a conventionalbattery, the excess voltage will still try to charge thebattery, leading to gassing, which causes liquid loss.
It is not as liable to self-discharge as a conventionalbattery. This is particularly important when a batteryis left standing for long periods of time.
It has more power available in a lighter and a smallercase.
RATINGSA battery has two ratings: (1) A reserve capacity ratingdesignated at 27C (81F), which is the time a fullycharged battery will provide 25 amperes current flow ator above 10.5 volts; (2) A cold cranking amp rating de-termined under testing at -18C (0F), which indicatesthe cranking load capacity.
RESERVE CAPACITYThe reserve capacity is the maximum length of time it ispossible to travel at night with the minimum electricalload and no generator output. Expressed in minutes,Reserve Capacity (or RC rating) is the time required fora fully charged battery, at a temperature of 27C (81F)and being discharged at a current of 25 amperes, toreach a terminal voltage of 10.5 volts.
COLD CRANKING AMPERAGEThe cold cranking amperage test is expressed at a bat-tery temperature of -18C (0F). The current rating isthe minimum amperage, which must be maintained bythe battery for 30 seconds at the specified temperature,while meeting a minimum voltage requirement of7.2 volts. This rating is a measure of cold cranking ca-pacity.
The battery is not designed to last indefinitely. However,with proper care, the battery will provide many years ofservice.If the battery tests well, but fails to perform satisfactorilyin service for no apparent reason, the following factorsmay point to the cause of the trouble: Vehicle accessories are left on overnight. Slow average driving speeds are used for short peri-
ods. The vehicles electrical load is more than the genera-
tor output, particularly with the addition of aftermarketequipment.
Defects in the charging system, such as electricalshorts, a slipping generator belt, a faulty generator, ora faulty voltage regulator.
Battery abuse, including failure to keep the batterycable terminals clean and tight, or a loose batteryhold-down.
Mechanical problems in the electrical system, suchas shorted or pinched wires.
BUILT-IN HYDROMETERThe sealed battery has a built-in, temperature-compen-sated hydrometer in the top of the battery. This hydrom-eter is to be used with the following diagnosticprocedure:1. When observing the hydrometer, make sure that the
battery has a clean top.2. Under normal operation, two indications can be ob-
served: GREEN DOT VISIBLE Any green appearance is
interpreted as a green dot, meaning the battery isready for testing.
DARK GREEN DOT IS NOT VISIBLE If there isa cranking complaint, the battery should be tested.The charging and electrical systems should alsobe checked at this time.
3. Occasionally, a third condition may appear: CLEAR OR BRIGHT YELLOW This means the
fluid level is below the bottom of the hydrometer.This may have been caused by excessive or pro-longed charging, a broken case, excessive tipping,or normal battery wear. Finding a battery in thiscondition may indicate high charging by a faultycharging system. Therefore, the charging and theelectrical systems may need to be checked if acranking complaint exists. If the cranking com-plaint is caused by the battery, replace the battery.
ENGINE ELECTRICAL 1E 3
DAEWOO M-150 BL2
CHARGING PROCEDURE1. Batteries with the green dot showing do not require
charging unless they have just been discharged, suchas in cranking a vehicle.
2. When charging sealed-terminal batteries out of thevehicle, install the adapter kit. Make sure all the char-ger connections are clean and tight. For best results,batteries should be charged while the electrolyte andthe plates are at room temperature. A battery that isextremely cold may not accept current for severalhours after starting the charger.
3. Charge the battery until the green dot appears. Thebattery should be checked every half-hour whilecharging. Tipping or shaking the battery may be nec-essary to make the green dot appear.
4. After charging, the battery should be load tested. Re-fer to Starter Motor in this section.
CHARGING TIME REQUIREDThe time required to charge a battery will vary depend-ing upon the following factors: Size of Battery A completely discharged large
heavy-duty battery requires more than twice the re-charging as a completely discharged small passengercar battery.
Temperature A longer time will be needed tocharge any battery at -18C (0F) than at 27C(81F). When a fast charger is connected to a coldbattery, the current accepted by the battery will bevery low at first. The battery will accept a higher cur-rent rate as the battery warms.
Charger Capacity A charger which can supply only5 amperes will
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