Suzuki GSF650A Service Manual page 511

Understanding the DTC (Diagnostic Trouble Code)
A two-digit DTC is shown through the flashing pattern of the ABS indicator light. A number between 1 and 9 is
represented by the number of times that the ABS indicator light lights up in interval of 0.4 seconds and the separation
between the tens and ones are indicated by the light staying off for 1.6 seconds. In addition, the separation between
the start code and the DTC is indicated by the light being off for 3.6 seconds. After the start code is displayed, DTCs
appear from the smallest number code.
If no DTCs are memorized, the ABS indicator light keeps lighting up.
Mode select switch
Brake light switch
Ignition switch
ABS indicator light
(Malfunction exists)
ABS indicator light
(No malfunction exists)
"a": Initial minimum light ON time (About 2 seconds)
"b": Error code interval (About 3.6 seconds)
"c": Main code light ON time (0.4 seconds)
"d": Main code light OFF time (0.4 seconds)
ON
OFF
ON
OFF
Output start
"a" "b"
Code 12
ON
OFF
"c"
"e"
"f"
ON
OFF
Code 31
"b"
"d"
"g"
"e": Main-sub code interval (1.6 seconds)
"f": Sub code light ON time (0.4 seconds)
"g": Sub code light OFF time (0.4 seconds)
ABS: 4E-24
Output finish
OFF
I718H1450129-01