Suzuki GRAND VITARA XL-7 Owner's Manual page 440

Step
4 Check visually input speed sensor and over-
drive clutch drum for the followings.
• No damage
• No foreign material attached
• Correct installation
Are they in good condition?
REFERENCE
Action
Connect oscilloscope between C51-1-11 (+) and C51-1-10 (–) of
PCM connector connected to PCM and check input speed sensor
signal.
[A] : Oscilloscope waveforms at specified idle speed in "p" range
AUTOMATIC TRANSMISSION (4 A/T) 7B1-31
Yes
Intermittent trouble or
faulty PCM.
Check for intermittent
referring to "INTERMIT-
TENT AND POOR CON-
NECTION" in Section 0A.
No
Clean, repair or replace.