Retrieve/Clear Continuous DTC's

PURPOSE
To determine if the Powertrain Control Module (PCM) has detected any historical or intermittent fault conditions that would cause a performance symptom. The condition that caused a continuous Diagnostic Trouble Code (DTC) may no longer exist.

New Generation Star Hookup And Adapter Cable Assembly:

RECOMMENDED PROCEDURE
Connect the New Generation Star (NGS) Tester to the Data Link Connector (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-POWERTRAIN 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 DTC 0380 while glow plug relay is unplugged.

NOTE: Injector Driver Module (IDM) codes must be cleared in this mode even though they only appear in KOEO On-Demand Self Test. If IDM trouble codes are retrieved, use the following special instructions required to clear IDM trouble codes.
- Key on.
- Record IDM trouble codes stored in "KOEO ON DEMAND SELF TEST" and "KOEO INJECTOR ELECTRICAL SELF TEST" modes.
- Access "RETRIEVE/CLEAR CONTINUOUS DTCs" from NGS Tester menu to clear IDM trouble codes from memory.
- Record any codes displayed. (P1111 may be the only code displayed.)
- Push "CLEAR ALL" button on NGS Tester.
- IDM trouble codes are now cleared from memory. Repeat the KOEO On-Demand Self Test and KOEO Injector Electrical Self Test. Any IDM codes that reappear are IDM hard faults. If no IDM codes reappear, then the fault is an intermittent IDM fault.

TOOLS REQUIRED
Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent