Nexon MCE 2 Gen2 Digital Instrument Cluster DTC Troubleshooting Data Version: 1.0 Date: 11-June-23 Author: Vasant Date Page: 56 of 141 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 - 4A:- VIN number mismatch for Odo learning (IPC & BCM / PEPS) Overview:- ISO Code B1937 -4A 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 BCM / PEPS for Odo learning After ignition On & after ignition Off. Probable Trouble Area Related wiring Harness, connector or terminals damaged IPC connector wired wrong, Harness wire shorted. BCM / PEPS proper working. Healing Condition Clearing the Fault. Ignition On/Off Component Details:- N/A Preliminary Checks:- 1. Check Battery Voltage is normal in the range (9v - 16v) 2. Check CAN i/p lines between IPC & BCM / PEPS for Pinch/Cut. 3. Check ECU & CAN signal pin for oxidation, bending & damage. 4. Check CAN signal at Pin no. J1-5 & J1-6 of the ECU connector.
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