Isuzu N 2008 Series Workshop Manual page 328

Checks
Scan Tool Snapshot
DRM or BCM Memory
The scan tool can be set up to take a Snapshot of the parameters available via serial
data. The Snapshot function records live data over a period of time. The recorded data
can be played back and analyzed. The scan tool can also graph parameters singly or in
combinations of parameters for comparison. The Snapshot can be triggered manually
at the time the symptom is noticed, or set up in advance to trigger when a DTC sets.
An abnormal value captured in the recorded data may point to a system or component
that needs to be investigated further.
Refer to scan tool Users Guide for more information.
Use data stored in the DRM or the BCM memory or use manual trigger function. The
DRM or the BCM has ability to store engine log data when an event of DTC. The
manual trigger function is to store the log data by an arbitrary operation of the driver
when an event of wrong vehicle performance that is instead of an event of DTC. If the
driver presses and releases the manual trigger switch once, that time becomes a
trigger and one log data before and behind the trigger is stored in the DRM or the BCM
memory.
Engine Control System (4JJ1)
Action
1A-325