toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Engine Control System - SFI System|Page 2455 > < Engine Control System - SFI System|Page 2453
Page 10
background image

(1) Purge VSV for EVAP system operation signal

HINT
If the waveform is not similar to that shown in the illustration, check the waveform again after idling for 10 minutes or more.

(i) WAVEFORM 9

(1) Vehicle speed signal

HINT
*

The wavelength becomes shorter as the vehicle speed increases.

*

Depending on the vehicle, the output waveform voltage may rise to 12 V if influenced by optionally installed systems.

(j) WAVEFORM 10

Engine Control System - SFI System|Page 2455 > < Engine Control System - SFI System|Page 2453