Aura, Outlook 2007

Alternator

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Diagnosis & Testing



Whenever troubleshooting the charging system, always check for obvious problems before proceeding, such as loose belts, bad electrical or battery connections, blown fuses, broken wires, etc. The battery must be in good condition and in the proper state of charge.

When performing the following tests, inspect the serpentine accessory drive belt to make sure it is properly tensioned. Also, make sure the ignition is OFF before connecting or disconnecting test equipment.

Carbon Pile Load Alternator Test
  1. Make sure the battery is properly charged (on original type batteries, a green eye should be visible through the built-in hydrometer) and that all battery and alternator connections are clean and tight.
  2.  
  3. Install the red tester cable to the positive battery terminal and the black cable to the negative battery terminal.
  4.  
  5. Clamp the ammeter connection to one of the battery terminals.
  6.  
  7. Start the engine, then run at 2000 rpm and observe the voltmeter; if the voltage is uncontrolled or exceeds 16 volts, the alternator is bad.
  8.  
  9. If the voltage is below 16 volts, turn the carbon pile load tester ON and, while maintaining 2000 rpm, adjust the tester to obtain a maximum current reading on the ammeter. Do not allow the voltage to fall below 13 volts.
  10.  
  11. If the output current is greater than 60 amps or within 15 amps of the rated alternator voltage, the alternator is good.

    Click image to see an enlarged view

    Fig. Typical carbon pile load tester

  12.  

System Function Test
  1. Turn the ignition key to the OFF position and verify that the charge lamp (which looks like a battery and is located in the left lamp grouping of the instrument cluster) is not illuminated.
  2.  
  3. Turn the ignition key to the ON position and verify that the charge lamp illuminates. If the lamp does not illuminate, check that the battery contains the proper voltage (and charge if necessary), then make sure the alternator and battery connections are clean and tight.
  4.  
  5. Start the engine and verify that the charge lamp extinguishes and remains unlit as long as the engine is running.
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Removal & Installation



2.4L Engine
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the drive belt.
  4.  
  5. Remove the alternator electrical connections.
  6.  
  7. Remove the alternator mounting nuts and bolts.
  8.  
  9. Remove the alternator
  10.  

To install:

  1. Installation is the reverse of removal, tighten the bolts to 37 ft. lbs. (50 Nm) and the nuts to 22 ft. lbs. (30 Nm).
  2.  

3.5L Engines
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the drive belt.
  4.  
  5. Remove the alternator electrical connections.
  6.  
  7. Remove the alternator mounting nuts and bolts.
  8.  
  9. Remove the alternator
  10.  

To install:

  1. Installation is the reverse of removal, tighten the bolts to 37 ft. lbs. (50 Nm) and the nuts to 22 ft. lbs. (30 Nm).

    Click image to see an enlarged view

    Fig. Alternator mounting-3.5L engine

  2.  

3.6L Engine
  1. Disconnect the negative battery cable.
  2.  
  3. Reposition the positive battery cable boot at the alternator terminal.
  4.  
  5. Remove the positive battery cable nut at the alternator.
  6.  
  7. Remove the positive battery cable terminal from the alternator.
  8.  
  9. Disconnect the engine harness electrical connector from the alternator.
  10.  
  11. Remove the drive belt.
  12.  
  13. Remove the idler pulley.
  14.  
  15. Remove the alternator bolts.
  16.  
  17. Remove the alternator.
  18.  

To install:

  1. Install the alternator.
  2.  
  3. Loosely install the alternator bolts.
  4.  
  5. Install the idler pulley. Tighten the bolts to 37 ft. lbs. (50 Nm).
  6.  
  7. Install the drive belt.
  8.  
  9. Connect the engine harness electrical connector to the alternator.
  10.  
  11. Install the positive battery cable terminal to the alternator. Install the positive battery cable nut at the alternator. Tighten to 15 ft. lbs. (20 Nm).
  12.  
  13. Position the positive battery cable boot at the alternator terminal.
  14.  
  15. Connect the negative battery cable.

    Click image to see an enlarged view

    Fig. Alternator mounting-3.6L engine

  16.  

 
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