Kanger 2.0 iVBAC DTC Troubleshooting data Version: 1.0 Date: 31-March-22 Author: ERC, Chassis CoC This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. Copyright © TATA MOTORS Ltd. P a g e | 257 U0037-88 :- Vehicle Communication Bus B-Bus off Overview: ISO Code U0037-88 Customer Symptom Warning lamps on Fault Effects (On Vehicle) ESC, AVH, HHC, HDC& APB– Not Available EBD, ABS – Depends on fault type Lamp Status (If Any) ESC, AVH, HDC, HHC & APB – Lamp ON ABS & EBD - Depends on fault type Fault Detection Condition C-CAN line short Normal Operating Condition ECU communicates properly with TML diagnostic Tool. Probable Trouble Area Chassis CAN Bus Healing Condition CAN lines connected properly/No pin Backout/No any short circuit conditions Preliminary Check: 1. Check resistance in Diagnostic CAN pin no. 6 and 14. It should be 120 Ω. 2. Check for short conditions at I VBAC ECU 46 pin connector between CAN_H (pin no.8) -CAN_L (pin no 9), CAN_H (pin no.8)-GND (pin no. 14 & 46), CAN_L (pin no.9)-GND (pin no. 14 & 46), CAN_H (pin no.8)-Vbatt (pin no.1) and CAN_L (pin no. 9)-GND (pin no. 14 &46). There should not be any short circuit conditions. 3. Check if any Pin backed out from cavity (pin no. 8 & 9 ) from I VBAC ECU 46 pin connector. 4. Read IVN DTCs in I VBAC in IGN ON condition. Note: After rectification please give Ignition latch to heal the DTC.
RkJQdWJsaXNoZXIy MTIwNTUz