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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Checking and Clearing DTCS After Reprogramming

Checking and Clearing DTCs After Reprogramming

DTCs codes may be set as a result of the programming process. In most cases the codes can be cleared using the Tech 2(R) and following the procedure listed below.

1. Install the Tech 2(R) to the vehicle.
2. Turn the ignition ON with engine OFF.
3. Enter "Diagnostics" and build vehicle according to model year, vehicle line, etc.
4. Select "Vehicle Control Systems."
5. Select correct engine.
6. Select "Vehicle DTC Information."
7. Select "DTC Display." Scan tool will check all modules for any DTCs that are set.
8. Select "View all DTCs."
9. Select "Clear DTCs."
10. Press the "exit" key to escape.