Nexon MCE 2 Gen3 Digital Instrument Cluster DTC Troubleshooting Data Version: 1.0 Date: 12-June-23 Author: Vasant Date Page: 50 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. B191E - 11:- Illumination Dimming Level Output Short to Ground Overview:- ISO Code B191E -11 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 send the illumination o/p signal (PWM). Probable Trouble Area Related wiring Harness, connector or terminals damaged IPC connector wired wrong, Harness wire shorted. 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 Illumination o/p lines for Pinch/Cut. 3. Check ECU & Illumination o/p signal pin for oxidation, bending & damage. 4. Check Illumination o/p signal through set switch of the ECU connector.
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