IST2 - Check Base Timing

^ Start the engine and run until at normal operating temperature.

^ Engine at idle.

^ All electrical loads OFF.

^ Connect a Rotunda Timing Analyzer 059-00014, or equivalent.

Data Link Connector:

^ Ground the Self Test Input (STI) connector.

^ Check timing: B10 degrees ±1 degree BTDC.

Base Timing Check:

^ Is timing within specifications?

YES -- Return to Powertrain Management / Testing And Inspection / Procedures / Diagnostic Routines.

NO -- Adjust the timing.