Valve Body: Testing and Inspection

CONTROL VALVE WITH TCM


Inspection


INSPECTION AFTER REMOVAL
Check foreign materials in oil pan to help determine causes of malfunction. If the [1][2]ATF is very dark, smells burned, or contains foreign particles, the frictional material (clutches, band) may need replacement. A tacky film that will not wipe clean indicates varnish build up.





Varnish can cause valves, servo, and clutches to stick and can inhibit pump pressure.
- If frictional material is detected, perform A/T fluid cooler cleaning. Refer to Cleaning.

INSPECTION AFTER INSTALLATION
Check for A/T fluid leakage.