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)

Or, hide this message: temporarily or permanently

Scan Tool Diagnostic Test Mode II (Increased Sensitivity)

1. Using the scan tool, change over the diagnostic test mode of the engine control module to DIAGNOSTIC TEST MODE (INCREASED SENSITIVITY).

2. Road test the vehicle.

3. Read the diagnostic trouble code(s) and repair the malfunctioning part.

4. Turn "OFF" the ignition switch once. Then turn it "ON" again.

NOTE: Turning "OFF" the ignition switch will cause the engine control module to changeover the diagnostic test module from the Diagnostic Test Mode II to the Diagnostic Test Mode I.

5. Erase the diagnostic trouble code.