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

Component Tests and General Diagnostics




1. Remove rear bumper facing.
2. Detach grommet from vehicle.
3. Disconnect coupler.
4. Connect BI/W terminal of coupler to a light bulb (12 V, 3.4W).
5. Turn ignition switch ON.
Make sure that bulb is lighted with meter pointer fluctuating several seconds thereafter. If meter is faulty, replace.