Operation CHARM: Car repair manuals for everyone.
Home >> Mercury >> 2004 >> Mountaineer AWD V6-4.0L VIN K Flex Fuel >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Tests >> Test N
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 N

PINPOINT TEST N: NO MODULE/NETWORK COMMUNICATION - NO POWER TO THE DIAGNOSTIC TOOL


Test N1-N3:






Test N4:






Normal Operation
The diagnostic tool is connected to the data link connector (DLC) C251 to communicate with the standard corporate protocol (SCP), UART based protocol (UBP), and the international standards organization (ISO) 9141 communications networks. If communication can not be established, the diagnostic tool and the DLC C251 must be checked for damaged. If the diagnostic tool and the DLC C251 are OK, circuits 1001 (WH/YE), 1205 (BK), and 570 (BK/WH) must be checked for an open condition.

Possible Causes
- DLC C251
- diagnostic tool
- circuit 1001 (WH/YE) open circuit
- circuit 1205 (BK) open circuit
- circuit 570 (BK/WH) open circuit
pro multis · About Operation CHARM