Suzuki Wagon R Manual page 3357

7B1-64 AUTOMATIC TRANSAXLE (M13 ENGINE MODEL)
Step
7 Check Output Shaft Speed Sensor (VSS)
Gears Visually.
Check output shaft speed sensor gears for the
followings.
• No damage in drive gear on differential
case
• No damage in driven gear in output shaft
speed sensor
Is result satisfactory?
Action Yes
Intermittent trouble or
Faulty TCM.
Check for intermittent
referring to "Intermittent
and Poor Connection" in
Section 0A.
If OK, substitute a known-
good TCM and recheck.
No
Replace drive gear and/or
driven gear of output shaft
speed sensor.