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Home >> Ford >> 2007 >> Expedition 2WD V8-5.4L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Test W: No Power To The Scan Tool
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Test W: No Power To The Scan Tool

PINPOINT TEST W: NO POWER TO THE SCAN TOOL


W1:






W2-W3:






Normal Operation
The scan tool is connected to the data link connector (DLC) to communicate with the high speed controller area network (HS-CAN) and the medium speed controller area network (MS-CAN) communications network. Voltage for the scan tool is provided by circuit SBP20 (GN/RD). Ground is provided by circuits GD113 (BK/YE) and GD138 (BK/WH).

Possible Causes
- Fuse
- Circuit SBP20 (GN/RD) open
- Circuit GD113 (BK/YE) open
- Circuit GD138 (BK/WH) open
- Scan tool