Scantool Diagnostics

Monitor DTC Status

NOTE:
If any DTCs relating to INJECTOR,HO2S,ECTS, or MAFS are stored, do ALL REPAIRS associated with those codes before proceeding with further troubleshooting

1. Connect GDS and select "DTC Analysis" mode
2. Click "DTC Status" on the menu bar to see DTC's information.
3. Confirm that "DTC Readiness Flag" indicates "COMPLETED". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
4. Read "DTC Status" parameter.




5. Is parameter displayed "History (Not Present) fault"?

NOTE:
- History (Not Present) fault : DTC occurred but has been cleared.
- Present fault : DTC is occurring at present time.





Monitor Actuation Test

NOTE:
The main purpose of this test is to identify potential engine mechanical condition problems and fuel and ignition systems problems that are not common to all cylinders. For best results, perform this test while maintaining as steady an rpm reading as possible.Caution! Before beginning tests; set the parking brake, place gear selector in P or N and block drive wheels for safety.

1. Warm up the engine to normal operating temperature and let it idle.
2. Install Scan Tool and select INJECTOR #1 parameter on the Actuation Test mode
3. Monitor engine rpm and shut off the injector #1 by pressing "STRT (F1)" key
4. Repeat procedure on all injectors and record the engine rpm.

Specification : All cylinders should show an even RPM drop.


5. Was each cylinder's rpm drop within the same value?