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

Precautions


1. Measurements are taken at the disconnected plug of the electronic control unit unless otherwise noted.
2. Components must be at room temperature , 23 ± 5°C (73 ± 9°F), as this will affect test values.
3. Battery must be fully charged (11.5 VDC minimum).
4. When conducting tests, inspect the terminals for:
a. Bent terminal connectors
b. Corrosion
c. Cracked terminal holders
d. Weak or missing retaining clips