nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Generator <--> [Alternator]|Specifications > < Electrical - MIL ON/DTC's U1010 or U1000 Stored|Page 11056
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Generator: Technical Service Bulletins
Alternator - Noise After Engine Shut-Down

Classification:
EL04-003

Reference:
NTB04-016

Date:
February 03, 2004

ALTERNATOR NOISE AFTER ENGINE SHUT OFF

APPLIED VEHICLES: 
2002-04 Altima (L31)
2002-04 Sentra (B15)

APPLIED ENGINE: 
QR25DE

IF YOU CONFIRM:

A low-tone whistling noise comes from the alternator for not more than 10 seconds after the engine is shut off.

ACTION:

Please note that this noise is:

^

Normal and is caused by a rotor "slow-down" function that is designed into the alternator 

^

NOT a failure symptom, so do not replace the alternator for this

Generator <--> [Alternator]|Specifications > < Electrical - MIL ON/DTC's U1010 or U1000 Stored|Page 11056