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

Mode 2 (EGR System Repair Verification Drive Mode)

Mode 3 (HO2S Heater, HO2S, and TWC Repair Verification Drive Mode)

1. Perform Mode 1 first.
2. Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.




3. Drive the vehicle as shown in the graph.

4. Stop the vehicle and access ON BOARD SYSTEM READINESS menu of GENERIC OBD-II FUNCTION to inspect the Drive Mode completion status.
- If completed, RFC changes from NO to YES.
- If not completed, turn the ignition key off then repeat from Step 3.

5. Access DIAGNOSTIC MONITORING TEST RESULTS menu of GENERIC OBD-II FUNCTIONS to inspect the monitor results.
- If MEAS are not within specification, repair has not completed.

6. Verify no DTCs are available.