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Home >> Ford >> 2008 >> F 450 4WD Super Duty V10-6.8L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Test N: The Four Wheel Drive (4WD) Control Module Does Not Respond To The Scan Tool
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Test N: The Four Wheel Drive (4WD) Control Module Does Not Respond To The Scan Tool

PINPOINT TEST N: THE FOUR WHEEL DRIVE (4WD) CONTROL MODULE DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The 4WD control module communicates with the scan tool through the International Standards Organization (ISO) 9141 communication network. Circuit VDB10 (GY) provides the diagnostic connection to the data link connector (DLC). The 4WD control module shares the ISO network with the parking aid module (PAM). Voltage for the 4WD module is provided by circuits CBP35 (YE/GY), CBP43 (GY) and SBP40 (VT/RD). Circuit GD115 (BK/GY) provides ground.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- 4WD control module


N1-N2:






N2-N4:




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