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 | 135 U0123-08 :- Lost Communication With Yaw Rate Sensor Module - Bus Signal / Message Failure Overview: ISO Code U0123-08 Customer Symptom Warning Light Displayed Fault Effects (On Vehicle) EBD & ABS– Available, ESC, HDC & AVH– Not Available, Lamp Status (If Any) ESC, HDC & AVH – Lamp ON ABS & EBD - OFF Fault Detection Condition 1. YRS connector is not connected properly or disconnected from its location. 2. CAN wire from YRS connector side are disconnected 3. CAN_H, CAN_L or both lines of YRS are open circuit 4. YRS VCC line fuse blown/disconnected. Normal Operating Condition YRS ECU communicates/provides data to I VBAC ECU. Probable Trouble Area 1. YRS connector / YRS fuse. 2. CAN lines of YRS Healing Condition 1. YRS is connected and no wiring harness issues from YRS side 2. CAN_H, CAN_L or both lines of YRS are connected properly Preliminary Check: 1. Check resistance in Diagnostic CAN pin no. 6 and 14. It should be 120 ohm. 2. Check CAN connection of YRS ECU with vehicle network, There should not be any short circuit conditions. 3. Check for short conditions at I VBAC ECU 46 pin connector between CAN_H (pin no.4)-CAN_L (pin no. 5), CAN_H (pin no. 4)-GND (pin no. 14 & 46), CAN_L (pin no.5 )-GND (pin no.14 &46), CAN_H (pin no.4)-Vbatt (pin no.1) and CAN_L (pin no. 5)-GND (pin no. 14 & 46). There should not be any short circuit conditions. 4. Check continuity between IPC CAN_H (pin no. 8) vehicle side connector to OBD connector CAN_H (pin no. 6) and CAN_L (pin no. 7) vehicle side connector to ODB connector (pin no.14) 5. Read IVN DTCs in I VBAC ECU in IGN ON condition. Note: After rectification please give Ignition latch to heal the DTC.
RkJQdWJsaXNoZXIy MTIwNTUz