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

E1-E3:

E4-E5: