02_engine_electrical_system.pdf

ENGINE

ELECTRICAL

SYSTEM

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GENERAL ..............................................

IGNITION SYSTEM .....................................

CHARGING SYSTEM ..................................

STARTING SYSTEM ...................................

GENERAL

SPECIFICATIONS

Distributor

MPI

FBC

Contact pointless type

Type

Controlled by electronic control unit

Centrifugal and vacuum type

Advance mechanism

Firing order

1-3-4-2

Ignition coil

MPI

FBC

Type

Primary coil resistance

Secondary coil resistance

Identification No.

Diamond

Poong Sung

Dae Joon

Mold single-coil

0.8 ± 0.08 CI

12.1 ± 1.8 Kfi

1.2 ± 0.12D

13.7 ± 2.1 Kfl

PN22C

F-088

PC88

DSA-117

Spark plug (MPI, FBC)

Type

NGK

BUR6EA-11

BPR6ES-11

RN9YC4

1.0-1.1 mm (0.039-0.043 in.)

Champion

Plug gap

27-2

GENERAL

Starter motor (MPI, FBC)

M/T

A/T, Power Steering

Direct drive type

12V 0.9 KW

30 sec

Type

Rated output

Rated time

No-load characteristics

Terminal voltage

Amperage

Maximum speed

No. of pinion teeth

Pinion gap

l2V 0.7 KW

11.5V

60A or less

6,600 rpm or more

0.0197-0.079 in. (0.5-2 mm)

6,500 rpm or more

Alternator

FBC

MPI

Battery voltage sensing

12V 75A (13.5V in case of Mando products)

Electronic built-in type

14.4 ± 0.3V

-10 ± 3 mV/°C

Type

Rated output

Voltage regulator type

Regulator setting voltage

Temperature compensation

Identification No.

Melco

Mando

13.5V 65A

14.7 ± 0.3V

-7 ± 3 mV/°C

AB165014

A2T09493

AB175015

Battery (MPI, FBC)

MF 60AH-B (Maintenance-free battery)

Type

48 Ah or more

Ampere hours (5HR)

60 Ah or more

(20HR)

420 A or more

Cold cranking [at -17.8°C (0°F)]

92 min.

Reserve capacity

1.270 ± 0.01

Specific gravity [at 25°C (77°F)]

NOTE

COLD CRANK AMPERAGE is the amperage a battery can deliver for 30 seconds and maintain a terminal

voltage of 7.2 or greater at a specified temperature.

RESERVE CAPACITY RATING is the amount of time a battery can deliver 25A and maintain a minimum

terminal voltage of 10.5 at 26.7°C (80°F).

27-3

IGNITION SYSTEM (MPI)

IGNITION SYSTEM

GENERAL INFORMATION

Ignition timing is controlled by the electronic control ignition

timing system. The standard reference ignition timing data for

the engine operation conditions are programmed in the memory

of the electronic control unit (ECU).

The engine conditions (rpm, load, warm-up condition, etc.) are

detected by the various sensors. Based upon these sensor

signals and the ignition timing data, signals to interrupt the

primary current are sent to the power transistor. The ignition coil

is activated, and timing is controlled this way.

TROUBLESHOOTING

Probable cause

Remedy

Probable condition

Engine will not start or is

Incorrect ignition timing

Adjust ignition timing

hard to start. (Cranks OK)

Ignition coil faulty

Inspect ignition coil

Power transistor faulty

Inspect power transistor

Distributor faulty

Inspect distributor

Inspect high tension cable

High tension cable faulty

Spark plugs faulty

Replace plugs

Ignition wiring disconnected or broken

Inspect wiring

Rough idle or stalls

Spark plugs faulty

Replace plugs

Ignition wiring faulty

Inspect wiring

Incorrect ignition timing

Adjust ignition timing

Ignition coil faulty

Inspect ignition coil

Power transistor faulty

Inspect power transistor

High tension cord faulty

Inspect high tension cord

Spark plugs faulty

Replace plugs

Engine hesitates/poor

acceleration

Ignition wiring faulty

Inspect wiring

Incorrect ignition timing

Adjust timing

Poor mileage

Spark plugs faulty

Replace plugs

Incorrect ignition timing

Adjust ignition timing

Engine overheats

Incorrect ignition timing

27-4

IGNITION SYSTEM (MPI)

IGNITION TIMING

Adjustment conditions:

Coolant temperature: 80-95°C (170-205°F)

Lamps, cooling fan, and all accessories: Off

Transaxle: Neutral (N or P for A/T)

Parking brake: On

Adjustment Procedures

Connect timing light.

Start engine and run at curb idle speed.

Curb idle speed: 700 ± 100 rpm

With the engine stopped, connect a lead wire with alligator

clips to the terminal for ignition-timing adjustment (located

in the engine compartment), and ground it.

Start and run the engine at curb idle speed.

Check basic ignition timing and adjust if necessary.

Basic ignition timing: 5° ± 2°BTDC

If the timing is incorrect, loosen the distributor mounting nut,

and rotate the distributor until the timing is correct.

NOTE

The ignition timing will be advanced if the distributor is

turned to the left and retarded if it is turned to the right.

After adjustment, securely tighten the mounting nut.

Tightening torque: 10-13 Nm (100-130 kg.cm, 7-9 lb.ft)

CAUTION

Be careful, when tightening the nut, that the distributor

does not move.

8. Stop the engine.

9. Disconnect the lead wire connected at step 3.

10. Start and run the engine at curb idle speed.

11. Check to be sure that the idling ignition timing is the correct

timing.

Actual ignition timing: 10°BTDC

27-5

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