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

Information Bus: Testing and Inspection

^ Try the following:

1. Check all TAN (800) wiring for an open or short to ground.

2. Check all data line component connectors for proper terminal contact, beginning with suspect component.

3. Check all data line components' ground wiring for high resistance (caused by poor terminal contact, frayed wires, etc.).

4. Check all data line components, beginning with suspect component.