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Service bulletin EL20

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id632467
Published by NHTSA2002-07-16
Manufacturer's numberEL20
Manufacturer's date2002-04-10
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

THIS PURPOSE OF THIS BULLETIN IS TO NOTIFY UD MANAGERS AND UD TECHNICIANS OF THE DIAGNOSTIC PROCEDURES AND METHODS THAT ARE USED FOR THE MD-TICS SYSTEM IN 200.5 MODEL YEAR MEDIUM DUTY VEHICLES. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system

Vehicles listed
NISSAN DIESEL UD18001999 to 2000
NISSAN DIESEL UD20001999 to 2000
NISSAN DIESEL UD23001999 to 2000
NISSAN DIESEL UD26001999 to 2000
UD UD33001999, 2000

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
NTB-09-0302009-08-12. Service bulletin. NISSAN: THE 12 VOLT BATTERY IS AN IMPORTANT PART OF THE VEHICLE ELECTRICAL SYSTEM AND IS REQUIRED TO STAY CONNECTED WHEN THE ENGINE IS RUNNING. TO PREVENT DAMAGE TO VEHICLE ELECTRONIC COMPONENTS FOLLOW THE INSTRUCTIONS/CAUTIONS. NO MODEL YEARS LISTED. *PE