Reference Waveform

WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Waveform analysis is as follows.

Fig 1: Identifying ICM Connector Waveform
Courtesy of SUZUKI OF AMERICA CORP.
Waveform might change for measurement condition and vehicle spec.

Fig 1: Serial Communication And Clock Line Reference Waveform

Courtesy of SUZUKI OF AMERICA CORP.

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.

WAVEFORM REFERENCE CHART

Measurement terminals	CH1: G17-3 to G17-2 CH2: G17-4 to G17-2
Oscilloscope settings	CH1: 5 V/DIV CH2: 5 V/DIV TIME: 20 ms
Measurement condition	Right after the ignition switch is turned ON, the waveform can be read.