5. Retrieve Continuous Diagnostic Trouble Codes (DTCs)

5. RETRIEVE CONTINUOUS DIAGNOSTIC TROUBLE CODES (DTCs)

Purpose:
The purpose of this test is to determine if the PCM has detected any historical or intermittent fault conditions that would cause a performance concern. The condition that caused a continuous DTC may no longer exist.

Retrieve Continuous DTCs:

Recommended Procedure:
Connect the scan tool. Turn off all accessories. 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 a visual inspection. Refer to Diagnostic Methods, Quick Test Operation. Quick Test Description
- Refer to the scan tool operating manual for instructions.
- Ignition ON, engine OFF.
- Follow the operating instructions from the menu.
- Record the continuous DTCs and freeze frame information from the PCM and the transmission control module (TCM) and refer to the appropriate pinpoint test for continuous DTC diagnostics.
- Clear the continuous DTCs after a repair is made.

Tools Required:
Scan tool