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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With Generic Scan Tool

Follow the instructions provided by the scan tool manufacturer to extract the diagnostic trouble codes.

NOTE:
- When battery voltage is low, diagnostic trouble codes cannot be read. Be sure to check the battery for voltage and other conditions before starting the test.
- Diagnostic memory is erased if the battery or engine control module connector is disconnected. Do not disconnect the battery until the diagnostic trouble codes are completely read.

1. Turn OFF the ignition switch.

M31-1 Data Link Connector:





2. Connect the scan tool to the data link connector.
3. Connect the power source terminal of the scan tool to the cigarette lighter socket.




NOTE: When the Ignition key is in the start position, the cigarette lighter power is OFF. It a test needs to be made during cranking, use the battery clamp harness provided.

4. Turn ON the ignition switch.
5. Use the scan tool to check the diagnostic trouble codes.
6. Follow the prompts on the scan tool's display to diagnose the problem.
7. Repair the system using the diagnosis charts.