# Service bulletin IB09\-N\-001H

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.

- Type: Service bulletin
- NHTSA id: 11012615
- Published by NHTSA: 2025\-01\-07
- Manufacturer's number: IB09\-N\-001H
- Manufacturer's date: 2024\-12\-05
- NHTSA component: ELECTRICAL SYSTEM
- Manufacturer's system: Electrical

## NHTSA's summary

INFORMATION BULLETIN: THE INFORMATION SET FORTH IN THIS BULLETIN IS INTENDED TO AID TECHNICIANS IN PROPERLY TESTING THE BATTERIES AND ALTERNATORS IN THE AFFECTED ISUZU VEHICLES. IT IS IMPORTANT TO CONFIRM THE BATTERY IS IN GOOD CONDITION PRIOR TO DIAGNOSIS OF THE ALTERNATOR AND CHARGING SYSTEM. NEVER REPLACE AN ALTERNATOR BEFORE TESTING THE BATTERY’S CONDITION. BATTERIES MUST BE FULLY CHARGED FOR THE ECM AND/OR STARTER RELAY TO FULLY ENGAGE WITH THE STARTER. IF THE BATTERY VOLTAGE IS LOW, THE ECM WILL NOT ENGAGE OR MAY PARTIALLY ENGAGE THE STARTER. REPLACE THE ALTERNATOR ONLY IF IT FAILS THE ON VEHICLE TESTING PROCEDURE.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012615-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012615-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2018 to 2024 ISUZU F\-SERIES
- 2010 to 2025 ISUZU N\-SERIES

JSON: [/v1/bulletins/11012615](/v1/bulletins/11012615)

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