1997 - 2000 DFI ECM
Page 31
3) When the warning messages have been displayed, you may select the ignition
coil you wish to test by using the ▲ and ▼ keys. To begin ring the selected
coil press the TEST key. is action will begin ring the ignition coil for a few
seconds.
• To abort the Ignition Coil test at any time, press and hold the scan-
ner’s NO key.
4) Aer the test is complete you may return to step #3 to test another ignition
coil or press the NO key to return to the Output Tests menu.
Direct Injector Output Test
is test allows individual direct injectors to be actuated to verify their operation.
is test helps a technician verify that a particular direct injector is receiving a
command signal from the ECM.
• IMPORTANT: Before performing this test the engine’s electric fuel
pump should be disabled. Disabling of the fuel pump may be accom-
plished by removing the fuel pump fuse or disconnecting the pump’s
electrical connector.
• This test should be performed with Key-On and Engine Off.
1) Review the warnings stated above and be sure the engine is not running when
attempting to perform this test.
2) Aer selecting the “Direct Injectors“ function from the Output Tests menu
the scanner will begin to display several warning messages. Review these
messages and be certain their instructions are followed.
3) When the warning messages have been displayed you may select the direct
injector you wish to test by using the ▲ and ▼ keys. To begin ring the
selected injector press the TEST key. is action will being actuating the
direct injector for a few seconds.
• To abort the Fuel Injector test at any time, press and hold the
scanner’s NO key.
4) Aer the test is complete you may return to step #3 to test another injector or
press the NO key to return to the Output Tests menu.
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