F 250 4WD Super Duty V8-6.4L DSL Turbo (2008)
D3-D4
Test E: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool
PINPOINT TEST E: THE RESTRAINTS CONTROL MODULE (RCM) DOES NOT RESPOND TO THE SCAN TOOL
Normal Operation
The restraints control module (RCM) communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits VDB04
(WH/BU) (HS-CAN +) and VDB05 (WH) (HS-CAN -) provide the HS-CAN network connection to the RCM. The RCM shares the HS-CAN
network with the PCM, ABS module, instrument cluster, transmission control module (TCM) (diesel engine only, if equipped), the variable geometry
turbocharger (VGT) actuator (diesel engine only), trailer brake control (TBC) module (if equipped) and the supplemental heater control module
(diesel engine only, if equipped). Voltage for the RCM is provided by circuit CBP32 (GN/VT) and the RCM is case grounded.
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
RCM
