Suzuki SWIFT RS415 2017 Service Manual page 1253

Reference waveform
[A]: The transponder code read successfully at the first try.
[B]: The transponder code read successfully at the second try.
1. Serial communication line
2. Clock line
3. First try
4. Second try
NOTE:
When ECM cannot read the transponder code
at the first try, ECM tries to read the
transponder code repeatedly up to 8 times.
The second waveform is the example
showing that ECM read the transponder code
successfully at the second try.
Measurement terminals
Oscilloscope settings
Measurement condition
I4RS0AA30007-
Immobilizer Control System:
CH1: G24-3 to G24-2
CH2: G24-4 to G24-2
CH1: 5 V/DIV
CH2: 5 V/DIV
TIME: 20 ms
Right after the ignition
switch is turned ON, the
waveform can be read.
10C-13