Ignition Timing Control, Checking

Ignition timing control, checking

^ No malfunctions stored in Diagnostic Trouble Code (DTC) Memory. Testing and Inspection
^ Engine temperature at least 80°C (176°F)


- Check and record ignition timing. Ignition Timing, Checking/Adjusting




- Connect VAG 1367 ignition tester using VAG 1367/8 inductive pickup adapter.
- Start engine and run at idle.
- Set engine tester to 3000 RPM.
- Gradually increase engine speed to slightly above 3000 RPM until ignition timing (control point) is indicated.

Specification:
^ Engine code ACC
^ Mono-Motronic Engine Control Module 1H0 907 311 G
^ Timing: 30-38° before TDC

If ignition timing does not advance:
- Troubleshoot electrical circuits - Electrical testing. Pinout Values and Diagnostic Parameters
- If necessary, replace Mono-Motronic Engine Control Module (ECM) (J257).