IB18X001D

BULLETIN NUMBER:
IB18-X-001D
IMPORTANT SERVICE
INFORMATION FOR:
 SERVICE MANAGER
 SERVICE ADVISOR
 TECHNICIAN
 WARRANTY PERSONNEL
ISSUE DATE:
JULY 2021
GROUP:
MISCELLANEOUS
ISUZU DTC ANALYZER (IDA) – PILOT PROGRAM INTRODUCTION
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-001C. The purpose of this
bulletin is to update affected model years. Please discard previous bulletin IB18X-001C.
INFORMATION
WHAT IS IDA?
IDA is a pilot diagnostic program that provides two functions:
1. DTC Analysis
IDA analyzes DTCs (currently 35) and then provides quick and easy-to-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.
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 criterion
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 pilot tool. Therefore, IDA
also includes a feedback process. The feedback provided during the pilot 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.
HOW LONG WILL IDA BE AVAILABLE AND WHEN SHOULD DEALERS USE IT?
The pilot program’s initial one year period has been extended. Please continue utilizing
IDA as much as possible until further notice. 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. Submit all
documentation with the claim. Failure to provide details will delay claim payments.
NOTE: Do not use IDA on vehicles that are “out of warranty.” As IDA is a pilot
program, ICTA cannot guarantee the results will always lead to a correct repair. “Out of
Warranty” vehicles should be diagnosed properly by the dealer technician to ensure the
correct repair is made the first time.
This pilot program may end at any time based on ICTA’s sole discretion.
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
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 VIN 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
Not Supported or Older than 2000 miles
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: Because the IDA system is a pilot program, 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.