F 150 2WD V8-5.4L Flex Fuel (2008)
B2-B4
Test C: The Instrument Cluster (IC) Does Not Respond To The Scan Tool
PINPOINT TEST C: THE INSTRUMENT CLUSTER (IC) DOES NOT RESPOND TO THE SCAN TOOL
Normal Operation
The IC communicates with the scan tool through the high speed controller area network (HS-CAN) and communicates with other modules on the UBP
communication network. Circuits 1827 (WH/LG) (HS-CAN +) and 1828 (PK/LG) (HS-CAN -) provide the HS-CAN connection to the IC and circuit
1906 (VT) provides the UBP network connection to the IC. The IC shares the HS-CAN with the PCM and the ABS module. In addition, the IC shares
the UBP network with the vehicle security module (VSM) (if equipped), the heating ventilation air conditioning (HVAC) module (if equipped) and the
driver seat module (DSM) (if equipped). Voltage for the IC is provided by circuits 640 (RD/YE), 489 (PK/BK), 1003 (GY/YE) and 3049 (BK/LG).
