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System Diagnostics - Keyless ECM
System Diagnosis - Keyless ECM
The keyless ECM has an on-board diagnostics feature which allows service technicians to
retrieve stored data using the Triumph diagnostic software. Full details of the Triumph
diagnostic software operation and how to interpret the results are given in the
Triumph Diagnostic Tool User Guide.
The software is connected, via an interface cable, to the motorcycle using a dedicated
diagnostic plug situated beneath the seat. By using a dedicated plug, no electrical
connectors associated with the system are disturbed, reducing potential connector
damage.
The software allows the user to retrieve data associated with the system sensors and
actuators, test various component functions, read build data and make minor
adjustments to the set-up of the system. The data and tests available are described on
the following pages.
On-board Fault Detection System
The on-board diagnostic system has two stages to fault detection. When a fault is
detected, the DSM (Diagnostic Status Manager) raises a flag to indicate that a fault is
present and increments a counter. The counter checks the number of instances that the
fault is noted.
When the count begins, the fault is detected but not confirmed. If the fault continues to
be detected and the count reaches a predetermined threshold, the fault becomes
confirmed and a DTC (Diagnostic Trouble Code) will be logged in the ECM's memory. A
confirmed fault may be indicated by the effected system(s) simply becoming inoperative,
or by the illumination of a system warning light and/or instrument warning message.
Once a fault is confirmed, the number of ignition switch cycles made is counted. If the
fault clears, the ignition switch cycle counter will restore operation to the affected
system(s) and extinguish any warning lights or instrument messages at a predetermined
count. DTCs are then erased from the ECM memory at another (higher) count.
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