Checking Solenoid Valves While Driving

Reading measured value block; Display group number 004; "Checking solenoid valves while driving"

- The solenoid valves can be checked while driving via "Read measured value block 08"; "display group number 004".
- The table shows the solenoid valves -N88-, -N89- and -N90- as activated in each selector lever position. These solenoid valves control the switching valves to the relevant gears.
- The solenoid valve -N91- activates the torque converter clutch modulation valve and is not covered here.
- The solenoid valves -N92- and -N94- are supplementary valves which affect selection changes and are only controlled during gear shifts and displayed in fields 5 and 6.
- VAG 1551 display field 1 has 6 characters (displays 1 - 6) and is read as follows:







- Non-activated solenoid valves display "0" and activated solenoid valves display "1".
- All solenoid valves are checked via On Board Diagnostic (OBD) See Reading DTC memory.