Nexon_MCE2_7inch_Digital Instrument Cluster_DTC Trouble Shooting Data Version: 1.0 Date: 09-May-2023 Author: Suraj Patil / Rajesh Patil Page: 66 of 167 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. B1937 - 31:- Acknowledgement missing from VICM for Learning Overview: - ISO Code B1937 -31 Customer Symptom N/A Fault Effects (On Vehicle) N/A Lamp Status (If Any) N/A Fault Detection Condition N/A Normal Operating Condition IC shall communicate with the VICM for Odoo learning After ignition on & after ignition Off. Probable Trouble Area Related wiring Harness, connector or terminals damaged IPC connector wired wrong, Harness wire shorted. VICM proper working. Healing Condition Clearing the Fault. Ignition On/Off Component Details: - N/A Preliminary Checks: - 3. Check Battery Voltage is normal in the range (9v - 16v) 4. Check CAN I/p lines between IPC & VICM for Pinch/Cut. 5. Check ECU & CAN signal pin for oxidation, bending & damage. 6. Check CAN signal at Pin no. J1-22 & J1-23 of the ECU connector.
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