Select oscilloscope function on the GDS and connect channel "A", "B" of the VMI to CKPS/CMPS "Signal" terminal of "ECM/PCM" harness connecter.
Check CKPS/CMPS signal waveforms at IG key "START".
■ Reference signal waveform
Are the measured CKPS and CMPS signal waveforms normal?
![]() | ▶ Click on "Ignition coil circuit" item for more details. |
![]() | ▶ Click on "ECM/PCM circuit" item for more details. |