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

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

R1-R2:

R2-R4:

Normal Operation
The TBCM communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits 1908 (WH) (HS-CAN +) and 1909 (BK) (HS-CAN -) provide the network connection to the TBCM. The TBCM shares the HS-CAN network with the powertrain control module (PCM), the transmission control module (TCM), the anti-lock brake system (ABS) module, the power steering control (PSC) module, the four wheel drive (4WD) control module and the instrument cluster. Voltage for the TBCM is provided by circuits 16 (RD/LG), 3206 (LG/YE) and 3800 (LG/BK). Ground is provided by circuits 57 (BK) and 570 (BK/WH).

Possible Causes
- Fuse
- Circuit 16 (RD/LG) open
- Circuit 57 (BK) open
- Circuit 570 (BK/WH) open
- Circuit 3206 (LG/YE) open
- Circuit 3800 (LG/BK) open
- Circuit 1908 (WH) open (HS-CAN +)
- Circuit 1909 (BK) open (HS-CAN -)
- TBCM