TESTING THE DDEC III SYSTEM (Cont'd.)
Using the Diagnostic Data Reader (DDR) or
Proper use of this reader is described in the instruction manual supplied. This device is infinitely more useful in
reading fault codes and diagnosing engine electronic faults than the flash code process. Section 5 of this manual
provides the information obtainable with the reader.
D. CLEARING CODES
This can only be done using the Diagnostic Data Reader (DDR). Refer to the DDR Instruction Manual for details.
Note that removing the battery cables will not clear codes.
E. CALIBRATION REPROGRAMMING
The Diagnostic Data Reader is equipped with capabilities to reprogram part of the engine calibration in the ECM.
Specifically, the following calibration changes can be made using the DDR:
Change DDR calibration configuration password
Add/Delete 5 minute idle shutdown
Set the initial speed if cruise control switches are used as a power take-off option
Set PTO droop
Enable/Disable cruise control
Add/Delete a vehicle speed sensor
Change vehicle speed limit
Change cruise control speed limit
Add/Delete engine shutdown feature
Set PTO max speed.
Switch between available engine ratings.
Enter injector calibration
3-345.16 Change 3