Wear at different areas of the solenoid modulator valve lineup can result in high or low pressure and associated complaints.
The Sonnax wear-resistant sleeve and valve correct circuit pressure loss and restore control over solenoid modulator valve function.
High and/or low pressure in the solenoid modulator circuits of Aisin AW TF-60SN units can cause DTCs and drivability complaints. Wear at the inboard end causes excessive feed pressure. This floods the solenoids and reduces reaction time, resulting in harsh shifting and high line pressure. Wear at outboard and mid-section reduces solenoid modulator pressure, which has the most effect on engagements and boost oil for line pressure rise.
F-15741-TL29PL required for reaming upper valve body #2.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
October 16, 2014
Topics: Vacuum Test Guides Vacuum Testing Transmission BMW VW/Audi Aisin AW 6F21WA Transmission 09G, 09K, 09M Transmission TF-60SN TransmissionRead Now
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Either a wet air test or a vacuum test in the locations shown result in leakage. A vacuum test must hold a minimum of 18".