ON
A
B
C
ON
ON
OFF
OFF
OFF
Key On
Key On
Key On
Lamp OFF: No Current or Historic DTCs
Lamp OFF
Lamp ON 8 Seconds:
Only Historic DTCs Exist
Lamp Remains ON: Current DTC*
* Historic DTCs May Also Exist
4 Sec.
4 Sec.
4 Sec.
4 Sec.
8 Sec.
4 Sec.
ed01046
Figure E-8. Security Lamp Operation
CODE TYPES
TOOL NAME
PART NUMBER
DIGITAL TECHNICIAN II
HD-48650
There are two types of DTCs: current and historic. If a DTC is
stored, it can be read using either a computer-based diagnostic
package called DIGITAL TECHNICIAN II (Part No. HD-48650)
or odometer self-diagnostics. See
E.10 ODOMETER SELF-
DIAGNOSTICS
.
NOTES
•
Odometer self-diagnostics will display both current and
historic DTCs. To differentiate between current and historic
DTCs, a computer-based diagnostic package called
DIGITAL TECHNICIAN II (Part No. HD-48650) must be
employed.
•
All DTCs reside in the memory of the ECM, TSM/TSSM,
odometer or tachometer until the DTC is cleared by use
of the odometer self-diagnostics. See
E.10 ODOMETER
SELF-DIAGNOSTICS
.
•
A historic DTC is also cleared after a total of 50 ignition
cycles has elapsed. After the 50 ignition cycles retention
period, the DTC is automatically erased from memory
providing that no subsequent faults of the same type are
detected in that period.
Current
Current DTCs are those which are present during the current
ignition cycle. See the appropriate flowcharts for solutions.
Historic
If a particular problem happens to resolve itself, the active
status problem is dropped and it becomes a historic DTC rather
than a current DTC. For example, intermittent output shorts
can become typical historic DTCs.
Historic DTCs are stored for 50 ignition cycles after any DTC
was last set as current to assist in the diagnosis of intermittent
faults. On the 50th cycle, the DTC will clear itself. The security
lamp will only indicate the existence of only historic DTCs for
two ignition cycles.
It is important to note that historic DTCs will exist whenever
the system indicates the existence of a current fault. See
E.8 DIAGNOSTIC TROUBLE CODES (DTC), Multiple Dia-
gnostic Trouble Codes
if multiple DTCs are found.
Diagnostic charts are designed for use with current DTCs and
as a result they frequently suggest part replacement. When
diagnosing an historic DTC the charts can be helpful but should
not lead to part replacement without verification the part is
faulty.
RETRIEVING DIAGNOSTIC TROUBLE
CODES
TOOL NAME
PART NUMBER
DIGITAL TECHNICIAN II
HD-48650
The TSM/TSSM supports two levels of diagnostics.
•
The most sophisticated mode employs a computer-based
diagnostic package called DIGITAL TECHNICIAN II (Part
No. HD-48650).
•
The second mode requires using odometer self-dia-
gnostics. Speedometer, tachometer (if equipped),
TSM/TSSM and ECM DTCs can be accessed and cleared.
See
E.10 ODOMETER SELF-DIAGNOSTICS
.
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E-16 2009 Sportster Diagnostics: Appendix E TSM/TSSM (Japan/Korea)