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 80°C (176°F).

Test sequence:
- Engine running at idle.
- Connect VAG 1551/1552 scan tool and select "Engine Electronics" with address word 01. Testing and Inspection




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





Indicated on display
- 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)
- Check the ignition timing control specifications (display fields 1-4).





Continuation:
- Checking operating modes. Testing and Inspection
- Checking throttle valve control module. Testing and Inspection
- Checking Knock Sensor (KS) and knock control. Testing and Inspection

If the specification is still not attained:
- Replace Engine Control Module (ECM) -J220-.
- Read the readiness code. If DTC memory has been erased, verify repair via appropriate display group See Readiness code, creating. Testing and Inspection