Kia Sedona (2008 year). Manual - part 280

And then, read the voltmeter at this time.

RESULT

1. The voltmeter may indicate the standard value.

Standard value: 0.2V max

2. If the value of the voltmeter is higher than expected (above 0.2V max.), poor wiring is suspected. In this

case check the wiring from the alternator "B" terminal to the battery (+) terminal. Check for loose
connections, color change due to an overheated harness, etc. Correct them before testing again.

3. Upon completion of the test, set the engine speed at idle.

Turn off the headlamps, blower motor and the ignition switch.

OUTPUT CURRENT TEST

This test determines whether or not the generator gives an output current that is equivalent to the normal output.

PREPARATION

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

Check the battery installed in the vehicle to ensure that it is in good condition. The battery checking
method is described in BATTERY.

The battery that is used to test the output current should be one that has been partially discharged. With a
fully charged battery, the test may not be conducted correctly due to an insufficient load.

Check the tension of the generator drive belt. The belt tension check method is described in INSPECT
DRIVE BELT.

2. Turn off the ignition switch.

3. Disconnect the battery ground cable.

4. Disconnect the generator output wire from the alternator "B" terminal.

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

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

6. Connect a voltmeter (0 to 20V) between the "B" terminal and ground. Connect the (+) lead wire to the

alternator "B" terminal and (-) lead wire to a good ground.

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

8. Leave the engine hood open.

NOTE:

Tighten each connection securely, as a heavy current will flow. Do not rely
on clips.

2008 Kia Sedona

2008 ELECTRICAL Charging System - Sedona

Microsoft

Saturday, May 22, 2010 4:06:11 PM

Page 4

Fig. 4: Output Current Circuit Diagram
Courtesy of KIA MOTORS AMERICA, INC.

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 alternator "B" terminal and battery (-) terminal or poor grounding
is suspected.

2. Start the engine and turn on the headlamps.

3. Set the headlamps 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.

RESULT

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

good condition, remove the generator from the vehicle and test it.

Limit value: 91A min. (130A alternator)

NOTE:

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

NOTE:



The nominal output current value is shown on the nameplate affixed
to the generator body.

The output current value changes with the electrical load and the
temperature of the generator itself.

The nominal output current may not be obtained if the temperature of
the generator itself or ambient temperature is too high.

2008 Kia Sedona

2008 ELECTRICAL Charging System - Sedona

Microsoft

Saturday, May 22, 2010 4:06:11 PM

Page 5

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 generator output wire to the generator "B" terminal.

6. Connect the battery ground cable.

REGULATED VOLTAGE TEST

The purpose of this test is to check that the electronic voltage regulator controls voltage correctly.

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. The battery checking method is described
in BATTERY.

Check the alternator drive belt tension. The belt tension check method is described in INSPECT DRIVE
BELT.

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.

In such a case, reduce the temperature before testing again.

2008 Kia Sedona

2008 ELECTRICAL Charging System - Sedona

Microsoft

Saturday, May 22, 2010 4:06:11 PM

Page 6

Fig. 5: Output Current Circuit Diagram
Courtesy of KIA MOTORS AMERICA, INC.

TEST

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

Voltage: Battery voltage

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

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 generator 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

REGULATING VOLTAGE CHART

2. Upon completion of the test, reduce the engine speed to idle, and turn off the ignition switch.

3. Disconnect the battery ground cable.

Voltage regulator ambient temperature °C (°F) Regulating voltage (V)

-30 (-22)

14.2-15.3

25 (77)

14.2-14.8

135 (275)

13.3-14.8

2008 Kia Sedona

2008 ELECTRICAL Charging System - Sedona

Microsoft

Saturday, May 22, 2010 4:06:11 PM

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