Test I: Intermittent No High Speed Controller Area Network (HS-CAN) Communication, One or More Modules Are Not Respond

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

Normal Operation
An open 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 network is used for communication between the following modules:
- ABS module
- Instrument cluster
- Fire suppression module (police only, if equipped)
- PCM
- Vehicle dynamics module (VDM)

In the event that one of the 2 network circuits (HS-CAN + or HS-CAN -) becomes open to a 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

I1-I2:

I2-I4:

I4-I7:

I8-I10: