| Subject: | NPR EFI OBD II Diagnostic Procedures |
| Models: | 1996-1997 NPR EFI Models Equipped with On-Board Diagnostics 2nd Generation
(OBD II) |
| Attention: | This Service Bulletin is intended for use by professional, qualified technicians.
Attempting repairs or service without the appropriate training, tools, and equipment
could cause injury to you or others and damage to your vehicle that may cause it not
to operate properly. |
Service Information
1996-1997 NPR EFI models are equipped with fuel, emissions, and ignition
systems that are OBD II compliant. The Pro-Link 9000 scan tool currently in use is
not configured to extract diagnostic trouble codes (DTCs) on these vehicles. Basic
DTCs, however, can be extracted using any of the commonly available diagnostic scan
tools (e.g., Tech-1, Snap On, OTC, etc.) that are OBD II compliant.
Tech 1 Loan Program
As a temporary measure, should you, the dealer, require assistance in extracting
codes, the Technical Assistance Line (TAL) has a limited number of Tech-1 scan tools,
which will be available for loan under certain circumstances. Dealers requiring a
scan tool to perform OBD II diagnostics should contact the TAL at 1-800-533-0244.
The TAL will assist in diagnosis and repair. All loaned scan tools must be promptly
returned to the TAL, in good working order, once repairs are completed.
Tech 1 Loan Procedure
The following steps outline the proper procedure for ordering and returning
the Tech-1 scan tool:
| • | Dealer calls Technical Assistance Line (TAL) at 1-800-533-0244
and supplies dealer code, name, VIN, and description of symptom. |
| • | TAL prepares one (1) box containing Tech-1 equipment
and ships overnight to dealer. |
| • | Upon receipt of container, dealer inspects contents to ensure receipt
of following items: |
| | Important: If any of the following items are missing, contact the TAL immediately.
|
| • | Tech-1 Scan Tool with adapter (Item A). |
| • | Tech-1 Operator's Manual (Item B). |
| • | Tech-1/OBD II Application and Reference Guide for 1996 NPR Gas (Item C). |
| • | FEDEX Form with return address and account number filled in (Item D). |
| • | Tech-1 black container (Item E). |
| | Important: Be sure to return all the Tech-1 items in good working order to American Isuzu
Motors Inc. Failure to do so may result in a monetary debit. The amount of this debit
will vary depending upon what item(s) are missing from the returned container. Please
include the Repair Order (RO) in the returned container.
|
| • | After diagnosing and repairing vehicle, dealer packs items in original container
and calls FEDEX for pickup and delivery to American Isuzu Motors Inc. |
Future Direction
As a permanent direction for OBD II diagnosis and reprogramming, American Isuzu
Motors Inc. is currently investigating usage of the Tech 2 scan tool along with PC-based
support hardware/software. Tentative plans (should current investigation prove worthwhile)
are to be implemented in the 1997 or 1998 model year.
