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

Tests DF: Vehicle Speed Circuit Check




NOTE
This Pinpoint Test is intended to diagnose the following:
- Harness circuits: Vehicle Speed Circuit Signal (VSC SIG), Vehicle Speed Circuit Ground (VSC GND)
- Powertrain Control Module (PCM)

For additional Information on the Anti-Lock Brake System and its circuits, refer to Brake System and Wiring Diagrams.

Pinpoint Test Schematic and Connectors

Excursion, F-Series O/8500 GVW (RABS or 4WABS ):





Explorer/Mountaineer, Ranger (4WABS):





Ranger (RABS):






Pinpoint Tests