Kia Carnival (2009+). Instruction — part 40

TEST

1. Check to see that the voltmeter reads as the same value as the battery voltage. If the voltmeter reads 0V, and the

open circuit in the wire between the alternator "B" terminal and battery (-) terminal, a blown fusible link or poor
grounding is suspected.

2. Start the engine and turn on the headlights.
3. Set the headlights to high beam and the heater blower switch to HIGH, quickly increase the engine speed to 2,500

rpm and read the maximum output current value indicated by the ammeter.

After the engine starts up, the charging current quickly drops. Therefore, the above operation must be done
quickly to read the maximum current value correctly.

RESULT

1. The ammeter reading must be higher than the limit value. If it is lower but the alternator output wire is in good

condition, remove the alternator from the vehicle and test it.

Limit value : Rated curent 70

％

• The nominal output current value is shown on the nameplate affixed to the alternator body.
• The output current value changes with the electrical load and the temperature of the alternator itself.

Therefore, the nominal output current may not be obtained. If such is the case, keep the headlights on the
cause discharge of the battery, or use the lights of another vehicle to increase the electrical load.
The nominal output current may not be obtained if the temperature of the alternator itself or ambient
temperature is too high.
In such a case, reduce the temperature before testing again.

2. Upon completion of the output current test, lower the engine speed to idle and turn off the ignition switch.
3. Disconnect the battery ground cable.
4. Remove the ammeter and voltmeter and the engine tachometer.
5. Connect the alternator output wire to the alternator "B" terminal.
6. Connect the battery ground cable.

PREPARATION

1. Prior to the test, check the following items and correct if necessary.

Check that the battery installed on the vehicle is fully charged. For battery checking method, see "BATTERY".
Check the alternator drive belt tension.

2. Turn ignition switch to "OFF".
3. Disconnect the battery ground cable.
4. Connect a digital voltmeter between the "B" terminal of the alternator and ground. Connect the (+) lead of the

voltmeter to the "B" terminal of the alternator. Connect the (-) lead to good ground or the battery (-) terminal.

5. Disconnect the alternator output wire from the alternator "B" terminal.
6. Connect a DC ammeter (0 to 150A) in series between the "B" terminal and the disconnected output wire. Connect

the (-) lead wire of the ammeter to the disconnected output wire.

7. Attach the engine tachometer and connect the battery ground cable.

TEST

1. Turn on the ignition switch and check to see that the voltmeter indicates the following value.

Battery voltage

If it reads 0V, there is an open circuit in the wire between the alternator "B" terminal and the battery and the
battery (-), or the fusible link is blown.

2. Start the engine. Keep all lights and accessories off.
3. Run the engine at a speed of about 2,500 rpm and read the voltmeter when the alternator output current drops to

10A or less.

RESULT

1. If the voltmeter reading agrees with the value listed in the Regulating Voltage Table below, the voltage regulator is

functioning correctly. If the reading is other than the standard value, the voltage regulator or the alternator is faulty.
REGULATING VOLTAGE TABLE

Voltage regulator ambient temperature °C (°F)

Regulating voltage (V)

-00 (-40)

20 (68)

60 (140)

80(176)

14.2 ~ 15.4
14.0 ~ 15.0
13.7 ~ 14.9
13.5 ~ 14.7

2. Upon completion of the test, reduce the engine speed to idle, and turn off the ignition switch.
3. Disconnect the battery ground cable.
4. Remove the voltmeter and ammeter and the engine tachometer.
5. Connect the alternator output wire to the alternator "B" terminal.
6. Connect the battery ground cable.

Engine Electrical System

Charging System - Alternator

Engine ,SLJ[YPcal System

2009 > D 2.9 VGT >

COMPONENT