[RC4A-EL] Automatic Transmission/Transaxle

VEHICLE SPEED SENSOR (VSS) INSPECTION [RC4A-EL]

Caution
^ Water or foreign material entering the connector can cause poor connections or corrosion. Be sure that water or foreign material do not enter the connector when disconnecting it.

Visual Inspection
1. Remove the VSS.
2. Make sure that the VSS is free of any metal shavings or particles.
^ If there is any malfunction, clean them off.
3. Install the VSS.

Element inspection
1. Verify using an oscilloscope that the wave pattern for the VSS signal that is input to TCM terminal 2K is the same as the reference wave pattern.
^ If the actual pattern of the VSS signal is not the same as the reference pattern, inspect and repair the following items:








^ Connected terminals: 2K (+) and 2M (-)
^ Equipment setting: 5V/DIV (Y): 2.5 ms/DIV (X)
^ Measuring conditions: M range, 1st gear at 20 km/h (12 mph)





2. Verify the wave pattern of the VSS signal again, and if the malfunction is not resolved, replace the VSS.