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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General Description/Flow Chart

OBD-II DRIVE CYCLE DESCRIPTION/FLOW CHART




Procedure

NOTE:
- Disconnecting the battery will reset the memory. Do not disconnect the battery during and after this procedure.
- Vehicle speed and engine speed detected by the PCM may differ from that indicated by the speedometer and the tachometer. Check the vehicle speed and engine speed during driving mode by using the SST (NGS tester).
- If the OBD II system check is not completed while the drive mode procedure is carried out, the following cause is guessed.

1. The OBD II system detects the malfunction.
2. The drive mode procedure is not completed correctly.