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Home >> Ford >> 2006 >> E 250 V8-4.6L VIN W >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Test F: No Controller Area Network (CAN) Communication
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Test F: No Controller Area Network (CAN) Communication

PINPOINT TEST F: NO CONTROLLER AREA NETWORK (CAN) COMMUNICATION


F1-F3:






F3-F6:






F7-F10:






F10 Continued:






F10-F12:






F12-F14:






F14-F17:






F18:






Normal Operation
The CAN has an unshielded twisted pair cable, circuits 1827 (WH/LG) and 1828 (PK/LG). The powertrain control module (PCM), instrument cluster, and the anti-lock brake system (ABS) module with roll stability control (RSC), are all on the CAN. The total resistance values from the data link connector (DLC) C251 must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in one of the CAN circuits, damage to the DLC C251, damage to one of the communications network module connectors, or damage to an in-line connector.

Possible Causes
- CAN circuit 1827 (WH/LG) open, short to ground, or short to voltage
- CAN circuit 1828 (PK/LG) open, short to ground, or short to voltage
- DLC C251
- PCM C175a (gasoline) or PCM C176a (diesel)
- instrument cluster C220a
- ABS module C149
- PCM
- instrument cluster
- ABS module (RSC equipped only)
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