38 KENR9126
Troubleshooting Section
Troubleshooti
ng without a
Diagnostic Code
i04010429
Alternator Noise
Note: This is not an electronic system fault.
Probable Causes
•
Alternator drive belt
•
Alternator mounting bracket
•
Automatic tensioner
•
Alternator drive pulley
•
Alternator bearings
Recommended Actions
Alternator Drive Belt
Inspect the condition of the alternator drive belt. If the
alternator drive belt is worn or damaged, check that
the drive belt and the pulley are correctly aligned. If
the alignment is incorrect, investigate the cause of
the misalignment. If the alignment is correct, replace
the drive belt.
Alternator Mounting Bracket
Inspect the alternator mounting bracket for cracks
and wear. Repair the mounting bracket or replace
the mounting bracket in order to ensure that the
alternator drive belt and the alternator drive pulley
are in alignment.
Automatic Tensioner (if equipped)
Check the tension on the alternator drive belts.
If necessary, replace the automatic tensioner (if
equipped).
Alternator Drive Pulley
Remove the nut for the alternator drive pulley and
then inspect the nut and the drive shaft. If no damage
is found, install the nut and tighten the nut to the
correct torque.
Alternator Bearings
Check for excessive play of the shaft in the alternator.
Check for wear in the alternator bearings. The
alternator is
a nonserviceable item. The alternator
must be replaced if the bearings are worn.
i04010431
Alternator Will N ot Ch arge
Note: This is not an electronic system fault.
Note: The alternator is electronically monitored.
Probable Causes
•
Alternator drive belt
•
Automatic tensioner
•
Charging circuit
•
Alternator
Recommended Actions
Alternator Drive Belt
Inspect the condition of the alternator drive belt. If
the alternator drive belt is worn or damaged, check
that the drive belt for the alternator and the pulley
are correctly aligned. If the alignment is incorrect,
investigate the cause of the misalignment. If the
alignment is correct, replace the drive belt.
Automatic Tensioner (if e quipped)
Check the tension on the alternator drive belt.
If necessary, replace the automatic tensioner (if
equipped).
Charging Circuit
Inspect the battery cables, wiring, and connections in
the charging circuit. Clean all connections and tighten
all connections. Replace any faulty parts.
Alternator
Verify that the alternator is operating correctly. The
alternator is not a serviceable item. If the alternator
is not operating correctly, the alternator must be
replaced.
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