Ignition Timing Control, Checking

Special Tools, Testers And Auxiliary Items
- VAG 1551/1552 scan tool with VAG 1551/3 adapter cable.

Test Conditions
- Electrical consumers switched off (Radiator Coolant Fan Must Not Run During The Check).
- Air conditioner switched off.
- Engine oil temperature at least 8O°C (17°F).

Test Sequence
- Connect VAG 1551 scan tool and select "Engine Electronics" address word 01. When doing this the engine must be running at idle speed.

Indicated on display

Rapid data transfer HELP
Select function XX

- Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input.

Indicated on display

Read Measuring Value block HELP
Input display group number XXX

- Press buttons -0-, -1- and -0- to input display group 010 and press -Q- button to confirm input.

Indicated On Display (1-4 Display Fields).

Read Measuring Value Block 10-->
1 2 3 4

- Check the measured values for ignition timing control (display fields 1-4).




Display Group 010: Ignition 1

Continuation
- Check engine operating conditions.
- Check throttle valve control module: Function 04.
- Check knock sensor and knock control operations.

If the specification is again not attained:
- Replace Engine Control Module -J220.
- Read the readiness code. If DTC memory has been erased, repair must be verified via appropriate display group: Readiness code, creating.