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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Malfunction Indicator Lamp: Testing and Inspection

Malfunction Indicator Light Testing:






1. Connect a jumper wire between terminal 1D (Y/B) of combination meter connector and ground.
2. Start engine. MIL should light.
3. If not, check combination meter fuse, MIL bulb and wiring harness between meter and ECU. Repair as necessary.

MIL output voltage can be checked at ECU. With lamp "ON," voltage should be below 2.5V. With lamp "OFF," voltage should be approximately 12V.