Test I: The Traction Battery Control Module (TBCM) Does Not Respond To The Scan Tool

PINPOINT TEST I: THE TRACTION BATTERY CONTROL MODULE (TBCM) DOES NOT RESPOND TO THE SCAN TOOL

Normal Operation
The TBCM is present on Hybrid vehicles only. The TBCM 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 network connection to the TBCM. The TBCM shares the HS-CAN network with the PCM, the transmission control module (TCM), the ABS module, the power steering control module, restraints control module (RCM), occupant classification sensor module, and the instrument cluster. Voltage for the TBCM is provided by circuits CBB23 (BN/YE), SBB05 (GY/RD) and SBB15 (WH/RD). Ground is provided by circuits GD182 (BK/GY) and GD149 (BK/GY).

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

I1-I2:

I3-I4: