F 350 2WD Super Duty V10-6.8L (2009)
S13 VERIFY VEHICLE EQUIPMENT - AHCM
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Inspect the vehicle for an AHCM. This module is present on some diesel engine equipped vehicles.
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Is the vehicle equipped with an AHCM?
Yes
GO to S14.
No
An intermittent fault is not present. Go To Pinpoint Test T. See: Pinpoint Test T: No High Speed Controller Area Network (HS-CAN) Communication,
All Modules Are Not Responding
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S14 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE AHCM DISABLED
NOTE: When re-running the network test, the network test application must be first closed or the screen display will revert back to the prior run network
test results.
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Disconnect: SJB Fuse 37 (10A) .
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Enter the following diagnostic mode on the scan tool: Network Test.
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Repeat the network test.
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Do all other modules pass the network test?
Yes
INSTALL the removed fuse. Go To Pinpoint Test F. See: Pinpoint Test F: The Auxiliary Heater Control Module (AHCM) Does Not Respond To The
Scan Tool
No
INSTALL the removed fuse. An intermittent fault is not present. Go To Pinpoint Test T. See: Pinpoint Test T: No High Speed Controller Area Network
(HS-CAN) Communication, All Modules Are Not Responding
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Pinpoint Test T: No High Speed Controller Area Network (HS-CAN) Communication, All Modules
Are Not Responding
Communications Network
Pinpoint Tests
Pinpoint Test T: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 24, Electronic Engine Controls - 5.4L for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 25, Electronic Engine Controls - 6.8L for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Refer to Wiring Diagram Set 26, Electronic Engine Controls - 6.4L Diesel for schematic and connector information. See: Diagrams/Electrical
Diagrams/Diagrams By Number
Normal Operation
The High Speed Controller Area Network (HS-CAN) uses an unshielded twisted pair cable circuits VDB04 (WH/BU) and VDB05 (WH).
This pinpoint test is intended to diagnose the following:
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Fuse