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 | 269 U1622-81 :- Invalid Data Received from VCU - Invalid Serial Data Received Overview: ISO Code U1622-81 Customer Symptom NA Fault Effects (On Vehicle) EBD - Available, ABS – Depends on fault type, ESC,HDC,AVH &HHC – Not Available Lamp Status (If Any) ESC,HHC,HDC & AVH - ON Fault Detection Condition VCU Signal internal problem Normal Operating Condition VCU sends correct data in normal condition. Probable Trouble Area VCU output signal publishing unexpected data to I VBAC ECU. Healing Condition After rectifying all the functional failures in VCU Preliminary Check: 1. Check resistance in Diagnostic CAN pin no. 6 and 14. It should be 120 ohm. 2. Check DTCs IN VCU ECU, take actions as per DTCs found to resolve the issue. 3. Read IVN DTCs in I VBAC ECU in IGN ON condition. Note: After rectification please give Ignition latch to heal the DTC.
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