Hyundai Cars 2006-2008

Alternator

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Diagnosis & Testing



Specific to:

Hyundai Accent 2006-2008

Hyundai Azera 2006-2008

Hyundai Elantra 2006-2008

Hyundai Entourage 2007-2008

Hyundai Sonata 2006-2008

Hyundai Tiburon 2006-2008

The alternator provides power consuming components with current while the engine is running and maintains battery charge. The alternator is mounted on the front edge of the engine. The output of the alternator depends on engine speed. When the engine is idling, the alternator operates at approximately half of its maximum output. When the engine is idling with many power consuming components engaged, the alternator may be unable to maintain full battery charge.

The alternator creates an alternating current which is converted to a direct current in the rectifier bridge. The alternator also utilizes a built-in voltage regulator.

  1. Check that the wiring is in good condition.
  2.  
  3. Check for any abnormal noise from the alternator while the engine is running.
  4.  
  5. Check the accessory drive belt for wear or slipping.
    NOTE
    With the engine running at 2,500 RPM, headlights on and fan blower on high, the alternator output voltage should be 12.0-15.5 volts at 68°F.



    Click image to see an enlarged view

    Fig. Exploded view of Alternator components

  6.  

Output Current Test

Specific to:

Hyundai Entourage 2007-2008

This test determines whether or not the alternator gives an output current that is considered normal. 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 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 alternator drive belt  
 

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Turn off the ignition switch.
  4.  
  5. Disconnect the battery ground cable.
  6.  
  7. Disconnect the alternator output wire from the alternator "B" terminal.
  8.  
  9. 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.
    NOTE
    Tighten each connection securely, as a heavy current will flow. Do not rely on clips.

  10.  
  11. Connect a voltmeter (0 to 20 volts) between the "B" terminal and ground.
  12.  
  13. Connect the (+) lead wire to the alternator "B" terminal and (-) lead wire to a good ground.
  14.  
  15. Attach an engine tachometer and connect the battery ground cable.
  16.  
  17. Leave the engine hood open.

    Click image to see an enlarged view

    Fig. Diagram for voltmeter connection for alternator output testing

  18.  

Check to see that the voltmeter reads the same value as the battery voltage. If the voltmeter reads 0 volts, and the open circuit in the wire between the alternator "B" terminal and battery (-) terminal, a blown fusible link or poor grounding is suspected.

  1. Start the engine and turn on the headlights.
  2.  
  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.
    NOTE
    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.

  4.  

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.

  1. Limit value (90 Amp alternator) = 63 Amp min.
    NOTE
    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 to cause discharge of the battery, or use the lights of another vehicle to increase the electrical load.


    NOTE
    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.  
  3. Upon completion of the output current test, lower the engine speed to idle and turn off the ignition switch.
  4.  
  5. Disconnect the battery ground cable.
  6.  
  7. Remove the ammeter and voltmeter and the engine tachometer.
  8.  
  9. Connect the alternator output wire to the alternator "B" terminal.
  10.  
  11. Connect the battery ground cable.
  12.  

Specific to:

Hyundai Accent 2006-2008

Hyundai Azera 2006-2008

Hyundai Elantra 2006-2008

Hyundai Sonata 2006-2008

Hyundai Tiburon 2006-2008

This test determines whether or not the alternator gives an output current that is considered normal. 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 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 alternator drive belt  
 

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Turn off the ignition switch.
  4.  
  5. Disconnect the battery ground cable.
  6.  
  7. Disconnect the alternator output wire from the alternator "B" terminal.
  8.  
  9. 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.
    NOTE
    Tighten each connection securely, as a heavy current will flow. Do not rely on clips.

  10.  
  11. Connect a voltmeter (0 to 20 volts) between the "B" terminal and ground.
  12.  
  13. Connect the (+) lead wire to the alternator "B" terminal and (-) lead wire to a good ground.
  14.  
  15. Attach an engine tachometer and connect the battery ground cable.
  16.  
  17. Leave the engine hood open.

    Click image to see an enlarged view

    Fig. Diagram for Voltmeter connection for alternator output testing

  18.  

Check to see that the voltmeter reads the same value as the battery voltage. If the voltmeter reads 0 volts, and the open circuit in the wire between the alternator "B" terminal and battery (-) terminal, a blown fusible link or poor grounding is suspected.

  1. Start the engine and turn on the headlights.
  2.  
  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.
    NOTE
    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.

  4.  

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.

  1. Limit value (90 Amp alternator) = 63 Amp min.
    NOTE
    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 to cause discharge of the battery, or use the lights of another vehicle to increase the electrical load.


    NOTE
    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.  
  3. Upon completion of the output current test, lower the engine speed to idle and turn off the ignition switch.
  4.  
  5. Disconnect the battery ground cable.
  6.  
  7. Remove the ammeter and voltmeter and the engine tachometer.
  8.  
  9. Connect the alternator output wire to the alternator "B" terminal.
  10.  
  11. Connect the battery ground cable.
  12.  

Wiring Test

Specific to:

Hyundai Accent 2006-2008

Hyundai Azera 2006-2008

Hyundai Elantra 2006-2008

Hyundai Entourage 2007-2008

Hyundai Sonata 2006-2008

Hyundai Tiburon 2006-2008

This test determines whether or not the wiring between the alternator "B" terminal and the battery (+) terminal is good by utilizing the voltage drop method.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Turn the ignition switch to "OFF".
    NOTE
    To find abnormal conditions of the connection, actions should not be taken on the 2 terminals and each connection during the test.

  4.  
  5. Connect a digital voltmeter between the alternator "B" terminal and battery (+) lead wire to the battery (+) terminal.

    Click image to see an enlarged view

    Fig. Diagram of Voltmeter connection for testing alternator wiring

  6.  
  7. Start the engine.
  8.  
  9. Switch on the headlamps, blower motor, and other power-consuming accessories. Read the voltmeter under this condition.
  10.  
  11. The voltmeter may indicate the standard value. Standard value = 0.2 volts max.
  12.  

If the value of the voltmeter is higher than expected (above 0.2 volts max.), poor wiring is suspected. In this case, check the wiring from the alternator "B" terminal to the fusible link to the battery (+) terminal. Check for loose connections and color change due to an overheated harness. Correct these before testing again.

  1. Upon completion of the test, set the engine speed at idle. Turn off the head lamps, blower motor, accessories, and the ignition switch.
  2.  

Removal & Installation



Specific to:

Hyundai Entourage 2007-2008

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Disconnect the electrical connectors from the alternator.
  6.  
  7. Remove the accessory drive belt. Refer to Accessory Drive Belts, removal & installation.
  8.  
  9. Remove the alternator mounting bolts.
  10.  
  11. Remove the alternator.

    Click image to see an enlarged view

    Fig. Alternator mounting exploded view

  12.  

To install:

  1. Install the alternator.
  2.  
  3. Tighten the pivot bolt to 14-18 ft. lbs. (19-25 Nm) and the adjustment bolt to 11-16 ft. lbs. (15-22 Nm).
  4.  
  5. Connect the alternator electrical connectors. Tighten the battery terminal connector nut to 60 inch lbs. (7 Nm).
  6.  
  7. Install the accessory drive belt. Refer to Accessory Drive Belts, removal & installation.
  8.  
  9. Connect the negative battery cable.
  10.  

Specific to:

Hyundai Accent 2006-2008

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Remove or disconnect the following:

    The battery negative terminal
     
    Temporarily loosen the water pump pulley bolts
     
    The alternator drive belt (A), after loosening the adjusting bolt and mounting bolt
     
    The power steering pump belt (B)

    Click image to see an enlarged view

    Fig. Remove the alternator drive belt (A) and the power steering pump belt (B)

     
    The water pump pulley
     
    The power steering pump
     
    The power steering pump bracket
     
    The alternator connector, and remove the cable from alternator -B- terminal
     
    The adjusting bolt (A)
     
    The mounting bolt (B)
     
    The alternator brace (C)
     
    Pull out the through bolt (D)
     

  4.  
  5. Remove the alternator (E).

    Click image to see an enlarged view

    Fig. Removing the bolts, brace, and alternator-1.6L engine

  6.  

To install:

  1. Install or connect the following:

    The alternator (E)
     
    The through bolt (D)
     
    The alternator brace (C)
     
    The mounting bolt (B)
     
    The adjusting bolt (A)
     
    The alternator connector, and install the cable from alternator -B- terminal
     
    The power steering pump bracket
     
    The power steering pump
     
    The water pump pulley
     
    The power steering pump belt
     
    The alternator drive belt and tighten the adjusting bolt and mounting bolt
     

  2.  
  3. Adjust the alternator belt and torque the bolts to the following specifications:
    1. Pivot bolt to 14-18 ft. lbs. (19-25 Nm).
    2.  
    3. Adjustment bolt to 14-20 ft. lbs. (19-28 Nm).
    4.  

  4.  
  5. Tighten the water pump pulley bolts to 70-86 inch lbs. (8-10 Nm).
  6.  
  7. Connect the battery negative terminal.
  8.  

Specific to:

Hyundai Azera 2006-2008

Hyundai Elantra 2006-2008

Hyundai Sonata 2006-2008

Hyundai Tiburon 2006-2008

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Alternator drive belt
     
    Alternator wiring harness connectors
     
    Alternator
     

  4.  

To install:

  1. Install or connect the following:

    Alternator
     
    Alternator wiring harness connectors
     
    Alternator drive belt
     

  2.  
  3. Adjust the alternator belt and torque the bolts to the following specifications:
    1. 2.0L engine: Pivot bolt to 14-18 ft. lbs. (19-25 Nm) and adjustment bolt to 105-132 inch lbs. (12-15 Nm).
    2.  
    3. 2.4L engine: Pivot bolt to 26-41 ft. lbs. (34-54 Nm) and the adjustment bolt to 14-18 ft. lbs. (19-25 Nm).
    4.  
    5. 3.3L and 3.8L engines: Pivot bolt to 14-18 ft. lbs. (19-25 Nm) and adjustment bolt to 11-16 ft. lbs. (15-22 Nm).
    6.  

  4.  
  5. Connect the negative battery cable.
  6.  

 
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