Retrieve/Clear Continuous Memory DTCs

Connect the diagnostic tool. Turn off all accessories. Turn the air conditioning (A/C) off. If the vehicle is equipped with a power take-off (PTO) system or auxiliary idle control, it must be turned off to carry out the self-tests.

Carry out the necessary vehicle preparation and visual inspection. Refer to QUICK TEST OPERATION .
Refer to the manufacturer's manual for diagnostic tool instructions.

NOTE: The following steps must be carried out for the powertrain control module (PCM) and the transmission control module (TCM).

Key on, engine off.
Select retrieve/clear continuous memory DTCs.
Follow the operating instructions from the menu.
Record the DTCs and follow the appropriate pinpoint test for continuous memory DTC diagnostics.
After the test, cycle the key to the OFF position before running other tests or driving the vehicle.
Continuous memory DTCs must be cleared after a repair is made.