Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Retrieve/Clear Continuous DTCs

Retrieve/Clear Continuous DTCs
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. Refer to Quick Test Operation. Quick Test Operation
^ SELECT CORRECT VEHICLE, YEAR and 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.