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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Initial Inspection and Diagnostic Overview

On-Board Diagnostic (OBD) Test Description
^ The OBD test inspects the integrity and function of the TPMS and outputs the results when requested by the specific tests,
^ On-board diagnostic test also:
- Provides a quick inspection of the TPMS usually performed at the start of each diagnostic procedure.
- Provides verification after repairs to ensure that no other faults occurred during service.
^ The OBD test is divided into 2 tests:
- Read/clear diagnostic results and PID monitor.

Read/clear diagnostic results
^ This function allows you to read or clear DTCs in the TPMS control module memory.

PID/Data monitor and record
^ This function allows you to access certain data values, input signals, calculated values, and system status information.