Test sequence
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
- Connect vehicle diagnostic, testing and information system VAS 5051. See VAS 5051 VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM, CONNECTING AND SELECTING FUNCTIONS
. Select vehicle system "01 - Engine electronics" in selection. Engine must be run at idle.
Display on VAS 5051:
- Under -1- select diagnostic function "08 - Read measured value block".
Display on VAS 5051:
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- Enter display group
- Enter "020" for "display group number 020" in zone -2- and confirm entry by pressing the -Q- button.
Display on VAS 5051:
- Check knock control in display zones -1- to -4-.
DISPLAY GROUP 020: IGNITION KNOCK RECOGNITION CONTROL WHILE DRIVING
| Display zones | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 020: Ignition knock recognition control while driving | ||||
| Display | xx.x °KW | xx.x °KW | xx.x °KW | xx.x° KW |
| Display | Ignition timing retardation by knock recognition control, cylinder 1 | Ignition timing retardation by knock recognition control, cylinder 2 | Ignition timing retardation by knock recognition control, cylinder 3 | Ignition timing retardation by knock recognition control, cylinder 4 |
| Specified value | 0...12 °Crankshaft | 0...12 °Crankshaft | 0...12 °Crankshaft | 0...12 °Crankshaft |
| Note: | Evaluation. See EVALUATION IGNITION ANGLE RETARDATION . | |||
NOTE:
The numbers displayed in display zones 1 to 4 represent the actual ignition timing retardation due to the knock control of the individual cylinders. The ignition angle retardation is carried out late in ° KW (crankshaft degree).
- Exit function "08 - Read measured value block" by pressing < button.