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TROUBLESHOOTING AND REPAIR |
ENGINE ALTERNATOR TEST (continued)
FIGURE F.26 – ALTERNATOR CODE 11199 & 11408
#59
#51
PROCEDURE (continued)
Engine running:
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•Chassis ground to the B+ terminal of the alterna- tor, (Lead #237 for code 10856) (Lead #51 for codes 11199 and 11408) the meter should read about 13.5 to 14.2 VDC.
•Chassis ground to the alternator flash/sense lead, (Lead #224 for cod 10856) (Lead #59 for codes 11199 and 11408) the meter should read about 10 Volts DC.
NOTE: A closed temperature switch or oil pressure switch can also cause the flash/sense voltage to measure low; perform the Engine Protection System Test before replacing the alternator.
If the voltages are significantly different from those shown above, check the wiring connected to the alter- nator for faulty connections or bad insulation. If the wiring is good, the alternator is probably faulty and should be serviced or replaced.