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
Test Point 15 - Ignition Signal to K/CP Control Unit
1.
Remove K/CP
control unit electrical connector.
2.
Connect oscilloscope between terminal 9 and ground.
3.
Start engine and observe oscilloscope.
4.
A clean square wave should be present.
5.
If wave is not available, check wiring. If wiring between DME and K/CP is OK, replace DME control unit.