BULLETIN NUMBER:
IB18-X-001F

IMPORTANT SERVICE
INFORMATION FOR:
✓ SERVICE MANAGER
✓ SERVICE ADVISOR
✓ TECHNICIAN
✓ WARRANTY PERSONNEL

ISSUE DATE:
JUNE 2023
GROUP:
MISCELLANEOUS

ISUZU DTC ANALYZER (IDA)
AFFECTED VEHICLES
▪

2011-Current Isuzu N-Series Vehicles
Equipped with 5.2L Diesel Engines
▪ 2011-2018MY Isuzu N-Series Vehicles
Equipped with 3.0L Diesel Engines
▪ 2018-2021MY Isuzu F-Series Vehicles
This bulletin supersedes information bulletin IB18-X-001E. The purpose of this
bulletin is to update content. Please discard previous bulletin IB18-X-001E.
INFORMATION
WHAT IS IDA?
IDA is a diagnostic program that provides:
1. DTC Analysis: IDA analyzes DTCs (currently 35) and then provides quick and easyto-understand repair solutions. Utilizing data captured during an Isuzu Mimamori ECU
(Health Report) download and accessible from www.IsuzuTruckService.com, Isuzu
dealer technicians will be able to click the IDA tab for their dealerships. Each supported
DTC will have a recommended repair or procedure.
The following chart provides the DTCs that are currently available for analysis on IDA:
Vehicle Application

ECM

2018-2021MY F-Series
2011-2024MY N-Series
Equipped with 5.2L 4HK1 Engine

P0172, P244B, P2463, P0045,
P003A, P0171

2011-2024MY N-Series
Equipped with 5.2L 4HK1 Engine

P0093, P0087, P0299, P0420,
P0401, P111E, P2199, P1078

2011-2018MY N-Series
Equipped with 3.0L 4JJ1 Engine

None

DCU
P1490 (P207F), P2000
(P20EE), P2201, P208E,
P242B, P242D, P205D,
P203D, P20A0, P204D,
P208A, P2224, P2207,
U029D, U029E, P1464,
P20E8, P205B, P1035,
U0100, P2214 (P229F),
P2216

2. DPF Early Regeneration Warning: IDA also reviews the three latest DPF
regeneration odometer readings in the Health Report of the applicable VIN on IDA. IDA
then analyzes the distances between the three regenerations. If the average of these
distances is less than 55 km for a 4HK1 (5.2L) engine, or less than 70 km for a 4JJ1
(3.0L) engine, an alert will be shown on the IDA page in the form of a red regeneration
icon. This is an early warning indication that a problem may be forming in the DPF

regeneration cycle. However, if the enabling criteria shown above are not met, a
regeneration icon will not appear on the IDA for that particular VIN.
Detailed instructions on how to use IDA are included in this bulletin.
HOW CAN DEALERS HELP ISUZU IMPROVE IDA?
It is vital for Isuzu to be able to evaluate the performance of this tool. Therefore, IDA also
includes a feedback process. The feedback provided during the program will
demonstrate IDA’s level of effectiveness and also help improve the IDA program.
Completing the feedback portion of the IDA process after repairing a vehicle is an integral
part of utilizing IDA and must be done for each IDA-suggested repair.
WHEN SHOULD DEALERS USE IT?
Isuzu Commercial Truck of America (ICTA) is requesting Isuzu dealers to use IDA for all
DTC-related repairs on vehicles that are still under warranty. When making a repair
suggested by IDA, please print a copy of the IDA-suggested repair and attach it to the
repair order. If the IDA recommendation does not repair the vehicle, ICTA will reimburse
the dealer for performing the suggested repair. Complete the feedback process within
IDA before submitting a claim. Please review the Warranty Information section below,
which provides directions for claim submission requirements related to IDA. Failure to
follow the instructions will delay claim payments.
NOTE: Do not use IDA on vehicles that are “out of warranty.”
SERVICE PROCEDURE
DIAGNOSE A DTC OR DPF REGENERATION ISSUE
1. Perform an Isuzu Health Report Download. If the synchronization process was
not completed, connect to the internet and complete the synchronization
process. The vehicle’s data will be reflected on IDA within 10 minutes of
synchronization.
Note: The IDA program cannot analyze any DTCs or DPF regeneration issues
unless the Health Report has been synchronized for that vehicle. Health Report
data older than 30 days will be omitted from the IDA program.
Note: Record the vehicle’s current ECM and SCR (DCU) Calibration part numbers,
if any, on the Repair Order.
2. Log into Isuzu Truck Service (www.IsuzuTruckService.com).
3. Click on the “IDA” tab located in the menu at the top of the screen. (See Figure
1.) IDA is also accessible from the dropdown menu of the “Service” tab.
Advice: If internet is available, utilize the same device to access IDA that you
used to perform the Health Report download.

IDA Tab

Figure 1
4. After the IDA page loads, locate vehicles with recently synchronized Health
Reports by entering the 17-digit VINs and clicking “Refresh Results” or by
scrolling down through all the VINs that have been associated with your
dealership. (See Figure 2.)
Advice: To more easily enter data into IDA when using the IDSS Tablet, toggle the
“Keyboard” button as necessary.
Note: DTCs are separated by module type (ECM or SCR) and color-coded to
reflect status. Refer to Chart 1 for each color’s meaning.
Note: A reduced interval DPF regeneration icon appears in the “Early Warning”
column and is color-coded to reflect status. Refer to Chart 1 for each color’s
meaning.
Note: DTCs show the vehicle’s mileage when the code was set. An analysis will
not be available for any DTC that was set more than 2000 miles earlier.
IMPORTANT: If all reporting DTCs are grey, IDA is not able to provide a diagnosis.
Continue diagnosis by following the DTC diagnostic chart in the appropriate
Service Manual.

Figure 2
Grey

Red
Blue
Green
Chart 1

Older than 2000 miles or no suggested
repair available (Perform analysis for the
DTC according to the Service Manual)
Not User-Reviewed
User-Reviewed
User-Reviewed and feedback given

Important: Before clicking on a DTC “button” you should still perform a
preliminary diagnosis to determine which DTC is the primary cause of fault. Not all
“red” DTCs necessarily need to be diagnosed or repaired. When determining
which DTC is the primary DTC, you should consider the customer’s complaint, the
vehicle’s performance, past repairs, etc. Also, perform a search for Isuzu Bulletins
that address the same concern.

5. Click on the desired “red” DTC button for the desired DTC analysis. Enter the
Repair Order Number in the “Pop-up” that appears. (See Figure 3.) If
requested, also enter the SCR (DCU) Calibration Number that was recorded
earlier. (See Figure 4.)
6. Click on any existing “red” DPF early warning buttons for DPF regeneration
analysis for the applicable VIN. Enter the Repair Order Number in the ‘Pop-up”
that appears. (See Figure 5.) Then click “Continue.”

Figure 3

Figure 4

Figure 5

7. Perform the suggested repair or procedure. (See Figures 6 and 7.) As part of
this process, you should verify that the repair or procedure was effective in
eliminating the cause of the DTC.

Suggested repair or procedure to correct the
DTC concern

Figure 6

Suggest action to correct the DPF regeneration
concern

Figure 7

PROVIDING IDA FEEDBACK
Important: Isuzu will be relying on receiving accurate information regarding the
success rate of the developed Estimated Cause and procedures. Furthermore,
accurate feedback will allow Isuzu to make the necessary corrections to the IDA
database in order to have a more effective and reliable tool.
1. Again, log into Isuzu Truck Service (www.IsuzuTruckService.com).
2. Click on the “IDA” tab located in the menu at the top of the screen. (See Figure
1.) IDA is also accessible from the dropdown menu of the “Service” tab.
3. After the IDA page loads, locate the vehicle you repaired by entering the VIN in
the “Find VIN” box and clicking “Refresh Results”. (See Figure 2.)
Advice: To more easily enter data into IDA when using the IDSS Tablet, toggle the
“Keyboard” button as necessary.
4. Click on the DTC or DPF regeneration button for which you are providing
feedback. The buttons should be blue, indicating that they were previously
reviewed.
5. Select the statement that most accurately reflects whether or not the
information provided by IDA repaired the vehicle. (See Figures 8 and 9.) If
additional selections “pop up” please choose the most appropriate option. If a
text box “pops up”, type in a description of the work performed that actually
repaired the vehicle.
Important: It is critical that this feedback be completed accurately. Please enter
accurate and detailed information in any text boxes that “pop up” describing what
repair ultimately fixed the vehicle.

Figure 8

Figure 9

6. Click the “Submit Feedback” button.
Note: Once the feedback has been input and submitted, the DTC or DPF
regeneration button for that code will turn green to indicate that the process is
complete.
WARRANTY INFORMATION
Refer to bulletin IB10-X-004K to submit for reimbursement for performing a Mimamori
ECU (Health Report) Download.
•
•
•

Submit a warranty claim after completing the suggested repair.
Attach a copy of the IDA estimated cause page as evidence of the repair
direction.
Failure to provide a copy of the estimated cause page will delay claim payments.