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

ML4 - Malfunction Indicator Light Never On



NOTE: If vehicle will not start, perform Pinpoint Test AA1. AA1 - Identify Type of No Start

- Key "ON", engine "OFF".

- Measure voltage from battery negative post to "Ground" side of the MIL fuse.

- Is voltage greater than 10.5 volts?

Yes -- Go to ML6. ML6 - Check For B+ at MIL Bulb/Socket

No -- Go to ML5. ML5 - Check For B+ at MIL Fuse