7 - Retrieve/Clear Continuous DTCS

7. Retrieve/Clear Continuous DTCs





Purpose:
To determine it the PCM has detected any historical or intermittent fault conditions that would cause a hard start/no start symptom. The condition that caused a continuous DTC may no longer exist.

NOTE: The IDM stores both historical and hard IDM fault codes. To retrieve IDM fault codes, you must run KOEO On-Demand Self Test or KOEO Injector Electrical Test. To ensure that the DTC is a hard fault, you must first clear Continuous DTCs (be sure to record all DTCs before clearing) even though IDM codes do not show up on the Continuous display. Rerun KOEO On-Demand Self Test if an IDM DTC is set. This is a hard fault.

Recommended Procedure:
Connect the NGS Tester to the DLC under the dash. Turn OFF accessories. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned OFF to perform self tests.
- Perform the necessary vehicle preparation and visual inspection.
- Select VEHICLE & ENGINE SELECTION menu.
- SELECT NEW VEHICLE, YEAR & MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM - POWERTRAlN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select RETRIEVE/CLEAR CONTINUOUS DTCs
- Turn key ON.
- Follow operating instructions from the menu.
- Record DTCs and follow appropriate pinpoint test for continuous code diagnostics.
- After test, cycle key to OFF before running other tests or driving vehicle.
- Continuous DTCs must be cleared after repair is made.

If performing repeated self tests, it may be necessary to unplug glow plug relay to keep battery from going dead. Ignore any glow plug codes while glow plug relay is unplugged.

Tools Required:
New Generation Star (NGS) Tester 007-00500 or equivalent