Performing Self-Test

NOTE: If no DTCs are present and KOEO INJECTOR ELECTRICAL SELF-TEST aborts while trying to perform test, go to TEST NA, step 29) under SYSTEM TESTS.

To perform self-test, turn ignition off. Ensure test equipment is properly attached. If vehicle is equipped with an auxiliary powertrain control system (RPM control), it must be turned off before performing self-test. Using NGS tester, perform the following steps:

Select VEHICLE & ENGINE SELECTION menu.
Select VEHICLE, YEAR & MODEL.
Select DIAGNOSTIC DATA LINK.
Select PCM - POWERTRAIN CONTROL MODULE.
Select DIAGNOSTIC TEST MODE.
Select KOEO INJECTOR ELECTRICAL SELF-TEST.
Turn ignition on.
Follow operating instructions from NGS tester menu.
Record DTCs and perform appropriate system test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . After test has been completed, cycle ignition off before performing other self-tests or driving vehicle.