Ignition Timing Control, Checking

Ignition Timing Control, Checking

Special tools, testers and auxiliary items
- VAG 1551/1552 Scan Tool using VAG 1551/3 adapter cable

Test conditions
- Electrical consumers switched off (radiator fan must not run during check)
- A/C switched off
- Engine oil temperature 80 °C (176 °F) minimum

Test sequence
- Connect VAG 1551 (VAG 1552) Scan Tool. Refer to Scan Tool Testing/VAG 1551 Scan Tool. Testing and Inspection
- With engine idling, press buttons -0- and -1- to select "Engine electronics" address word 01.

Display will appear as shown


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -8- to select "Read measuring value block".
- Press -Q- button to enter selection.

Display will appear as shown


Read measuring value block HELP
Input Display group number XXX


- Press buttons -0-, -1- and -0- to select "Display group number 10".
- Press -Q- button to enter selection.
- Press -Q- button to enter selection.

Display will appear as shown (1 to 4 Display fields)


Read measuring value block 10 ->
1 2 3 4


- Check ignition timing control specifications (Display fields 1 to 4):

Display Group 10:

Continuation
- Check operating modes. Refer to Scan Tool Testing/Engine Operating Mode, Checking. Testing and Inspection
- Check Throttle Valve Control Module. Testing and Inspection
- Check Knock sensor and knock control. Refer to Knock Sensor/Knock Control, Checking. Testing and Inspection

If specification still not obtained:
- Replace Engine Control Module -J220-.
- Perform Basic setting.
- Read-out Readiness code. Refer to Monitors, Trip and/or Drive Cycle (Readiness Codes)/Readiness Code Checking. Testing and Inspection

If DTC memory has been erased:
- Create Readiness code. Refer to Monitors, Trip and/or Drive Cycle (Readiness Codes)/Readiness Code Generating Testing and Inspection