Operation CHARM: Car repair manuals for everyone.
Home >> Lincoln >> 2003 >> LS V8-3.9L VIN A >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Pinpoint Tests >> Test I
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 I

PINPOINT TEST I: NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY - UNABLE TO INSERT OR EJECT MAP DISC


Test I1-I2:






Test I3:






Normal Operation
The navigation map disc is contained in the navigation system module. The voltage is supplied to the navigation system module with the key in the ON or ACC position through 10-GK8 (GY/BK). Circuit 31-GK8 (BK/RD) supplies the navigation system module ground.

Possible Causes
- circuit 10-GK8 (GY/BK) open or shorted
- circuit 31-GK8 (BK/RD) open
- navigation system module
pro multis · About Operation CHARM