Leon Mk1
| Analysis measured value block, display group 70...75 -exhaust recirculation- |
| Display group 70 -exhaust emissions reduction- diagnosis activated charcoal filter system (filter deaeration system) | ||||||||||||
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| Read measur. value block 70 | → | ◂ The display reads | ||||||||||
| xx.x % | xx.x % | xxx mbar | text | |||||||||
| 1 | 2 | 3 | 4 | ◂ Display fields | Target value | Analysis | ||||||
| Result of activated charcoal filter system diagnosis (Test OFF/Test ON/VDD OK/VDD not OK) | VDD OK | -- | ||||||||||
| Intake manifold pressure | 240...420 mbar | -- | ||||||||||
| Result of current diagnosis | > 25 % | -- | ||||||||||
| Degree of opening | 13...25 % | -- | ||||||||||
Note!| VDD stands for filter deaeration valve (activated charcoal filter solenoid valve 1). |
Note!| t | Note on display field 1: |
| t | During the diagnosis the value displayed oscillates approx. 6%, within a range of 13...25%. |
| Display group 74 -exhaust emission reduction- actuator adaptation | ||||||||||
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| Read measured value block 74 | → | ◂ Message on the display | ||||||||
| xxx V | xxx V | xxx V | text | |||||||
| 1 | 2 | 3 | 4 | ◂ Display fields | Target value | Analysis | ||||
| Result ADP ON/ADP OK ERROR | ADP OK | --- | ||||||||
| Present potentiometer voltage | 0.3...4.6 V | --- | ||||||||
| Position 100 % | 2.9...4.6 V | --- | ||||||||
| Position 0 (basic settings) | 0.3...1.3 V | --- | ||||||||
Note!| t | Notes on display group 74: |
| t | When adapting the exhaust recirculation valve it must be connected. |
| t | When display group 75 is selected in function 04 “Basic settings”, the engine control unit is adapted to the exhaust recirculation valve. This adaptation must be carried out if the exhaust recirculation valve (or entire engine) or engine control unit is replaced. |
| Display group 75 -exhaust gas recirculation- | ||||||||||||
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| Read measur. value block 75 | → | ◂ The display reads | ||||||||||
| xxxx/min | xxx mbar | xxx mbar | text | |||||||||
| 1 | 2 | 3 | 4 | ◂ Display fields | Target value | Analysis | ||||||
| Result Test ON/Test OFF/ Sys. OK/Sys. Not OK | Sys. OK | -- | ||||||||||
| Pressure difference in intake manifold | 50 mbar min. | -- | ||||||||||
| Intake manifold pressure | 240...420 mbar | -- | ||||||||||
| Engine revs | 1800...5700/min | -- | ||||||||||
Note!| t | Note on display field 3: |
| t | The pressure difference in the intake manifold depends on load. A fault can occur even with a difference of less than 140 mbar. |
