Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2008 >> Crown Victoria V8-4.6L Flex Fuel >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Test N: No Power To The Scan Tool
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: No Power To The Scan Tool

PINPOINT TEST N: NO POWER TO THE SCAN TOOL

Normal Operation
The scan tool is connected to the data link connector (DLC) to communicate with the high speed controller area network (HS-CAN), the standard corporate protocol (SCP), and the International Standards Organization (ISO) 9141 network. Voltage for the scan tool is provided by circuit 40 (LB/WH). Ground is provided by circuits 57 (BK) and 570 (BK/WH).

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Scan tool


N1-N2:






N3:




pro multis · About Operation CHARM