Test S: Intermittent No High Speed Controller Area Network (HS-CAN) Communication, One Or More Modules Are Not Responding Durin

PINPOINT TEST S: INTERMITTENT NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ONE OR MORE MODULES ARE NOT RESPONDING DURING NETWORK TEST

Normal Operation
An open in circuit VDB04 (WH/BU) (HS-CAN +) or VDB05 (WH) (HS-CAN -) may cause intermittent or unreliable communication to all modules on the HS-CAN. The HS-CAN is used for communication between the following modules:
- ABS module
- Trailer brake control (TBC) module (if equipped)
- PCM
- Restraints control module (RCM)
- Supplemental heater control module (diesel engine only, if equipped)
- Transmission control module (TCM) (diesel engine only, if equipped)
- Variable geometry turbocharger (VGT) actuator (diesel engine only)
- Instrument cluster

In the event that either circuit VDB04 (WH/BU) or VDB05 (WH) becomes open to any module on the network, unreliable network communication to all modules on the network may result.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors

S1:

S2-S4:

S4-S7:

S8-S14:

S15-S17: