Diagnostic Procedure (Using DRB-II)

NOTE: Before proceeding with diagnosis, certain precautions must be followed. See PRETEST INSPECTION.

Refer to ENTERING ON-BOARD DIAGNOSTICS (USING DRB-II) to retrieve fault codes. If fault codes are not present and/or DRB-II is used, proceed to one of the following tests:

Go to NO START TEST 1A (NS-1A) chart if a no-start condition exists or engine stalls after start-up. After repairs, perform indicated VERIFICATION PROCEDURE test. Ensure code charts apply to engine being tested.
Go to DRIVEABILITY TEST 1A (DR-1A) chart if engine runs but has performance problems. Perform indicated VERIFICATION PROCEDURE test after repairs. Ensure charts apply to engine being tested.