Field Service Mode Check
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 1994 Oldsmobile Bravada, 1994 GMC Vandura, 1994 GMC Sonoma, 1994 GMC Safari, and 1994 GMC Rally. However, it is still accessible from the selected car via links, so may be relevant.
Malfunction Indicator Light (MIL) indicates operational mode of engine if DLC is grounded while engine is running. Light response confirms proper fuel system operation and verifies closed loop operation. Clear codes and perform this test after any repair is completed. Field service mode check can be found by proceeding to FIELD SERVICE MODE CHECK in appropriate BASIC TESTING article in this section as listed below.
- F - BASIC TESTING (for Astro & Safari)
- F - BASIC TESTING (for "S" & "T" Series)
- F - BASIC TESTING - GASOLINE (for "C" & "K" Series)
- F - BASIC TESTING - GASOLINE (For "G" & "P" Series)