Nexon MCE 2 Gen3 Digital Instrument Cluster DTC Troubleshooting Data Version: 1.0 Date: 12-June-23 Author: Vasant Date Page: 41 of 135 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 BCM / PEPS 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 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: - 3. Check Battery Voltage is normal in the range (9v - 16v) 4. Check CAN i/p lines between IPC & BCM / PEPS 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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