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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DESCRIPTION
In some localities it may become a legal requirement to pass an Inspection/Maintenance (I/M) test of the OBD II System. If the vehicle's OBD II system or its battery has just been serviced, the PCM system is reset to a "not ready for I/M testing" condition. To prepare the vehicle for this test and to clear the DTC P1000, the OBD II drive cycle must be performed.

OBD II DRIVE CYCLE
The following steps MUST BE RUN IN THE ORDER SHOWN. If Steps 2, 3 or 4 are interrupted, repeat the step before proceeding. Any safe driving mode is acceptable between steps. Always drive vehicle in a safe manner according to traffic conditions and obey all traffic laws.
1. START engine and drive vehicle in typical city stop and go traffic for at least 10 minutes after if has reached normal operating temperature.
2. Idle vehicle for at least 45 seconds, then accelerate at part throttle to near 72 km/h (45 mph).
3. Cruise and maintain a select speed in the range of 48 to 64 km/h (30 to 40 mph) on a level road with throttle held steady for at least one minute.
4. Cruise and maintain a select speed in the range of 64 to 105 km/h (40 to 65 mph) on a level road with throttle held steady for at least one minute and 20 seconds.
5. OBD II drive cycle has been completed.