TM 5-3805-290-23-1
HOW TO USE ON-BOARD DIAGNOSTICS - CONTINUED
0005 00
FAILURE MODE IDENTIFIERS (FMIS) - CONTINUED
Table 1. Detailed FMI Explanation - Continued.
FMI
DESCRIPTION
EXPLANATION
05
Current Below Normal
Current through a component or system is lower than its limit. FMI 05 is most often
or Open Circuit.
related to a driver circuit. Some possible causes of an FMI 05 diagnostic code are:
There is an open circuit or a poor wiring harness connection.
There is an open relay.
There is a switch in OPEN position.
06
Current Above Normal
Current through a component or system is higher than its limit. FMI 06 is most often
or Grounded Circuit.
related to a driver circuit. This fault is very similar to FMI 04. Some possible causes
of an FMI 06 diagnostic code are:
There is a short to ground in a wiring harness connection.
There is a shorted relay.
A faulty control will also cause an FMI 06, although this is very unlikely.
07
Mechanical System Not
Control detects a signal sent to a mechanical system and the response is not correct.
Responding Properly.
Some possible causes of an FMI 07 diagnostic code are:
Component responds improperly.
Component is stuck in a position.
Component has failed.
Engine is shut down.
Machine is being used improperly.
08
Abnormal Frequency,
This code occurs when a signal is not in its expected range. FMI 08 can also relate to
Pulse Width, or Period.
a faulty sensor. Some possible causes of an FMI 08 diagnostic code are:
Wiring harness connections are intermittent or poor.
Engine misfired.
Signal is noisy due to nearby interference.
There are loose mechanical devices.
09
Abnormal Update.
This relates to communications on the data link. FMI 09 occurs when a control is not
able to get information from another control. Some possible causes of an FMI 09
diagnostic code are:
Control module is not communicating on data link correctly.
Rate of data transmission is abnormal.
Data link has failed.
There is a mismatch of software.
10
Abnormal Rate of
This relates to a signal that changes too quickly. The rate of change is outside of its
Change.
expected range.
11
Failure Mode Not
Control identifies more than one FMI as being responsible for a single failure. Some
Identifiable.
possible causes of an FMI 11 diagnostic code are:
There is a mechanical failure.
There is damage to multiple circuits.
0005 00-8