Reading measured value block; Display group number 004; Checking solenoid valves while driving
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NOTE:
- 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- (displays 1 to 3) as activated in each selector lever position. These solenoid valves control the shift valves for the relevant gears.
- The solenoid valve -N91- activates the lock-up clutch modulation valve and is not covered here.
- The solenoid valves -N92- and -N94- are supplementary valves which affect gear shifts. These are only controlled during gear shifts and displayed in fields 5 and 6. They can show "0" or "1" depending on the driving situation.
- At the start of a test drive the selector lever can be in position "1". During the drive it can be shifted progressively up to position "D".
- The mechanical gear "M" is not always engaged. The control module can engage this gear dependent upon the driving situation. The lock-up clutch can be checked in display group number 005.
- VAG 1551 display field 1 has 6 characters (0000 00) and is read as follows:
| Display on | Display field 1: | |||||
| VAG 1551 | Display 1 | Display 2 | Display 3 | Display 4 | Display 5 | Display 6 |
| Solenoid valve 1 | Solenoid valve 2 | Solenoid valve 3 | Solenoid valve 4 | Solenoid valve 5 | Solenoid valve 7 | |
| 1551 | -N88- | -N89- | -N90- | -N91- (not applicable) |
-N92- | -N94- |
- Non-activated solenoid valves display "0" and activated solenoid valves display "1".
- All solenoid valves are checked via On Board Diagnostic (OBD). Refer to Checking DTC memory. See Diagnostic Trouble Code (DTC) memory, checking .