Vehicle Platform: Tiago,Tigor & Osprey ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 2.0 Date: 22-10-2018 Author: Parag K Page: 129 of 737 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. B222C – 12: Low Beam Relay – Short to Battery Overview: ISO Code B222C - 12 Customer Symptom 1. Low Beam always ON. Fault Effects (On Vehicle) Low beam always ON. Lamp Status (If Any) Always ON Fault Detection Condition This fault gets logged by BCM when Low Beam output is shorted to battery or open circuit Normal Operating Condition If the IGN is ON / ACC is ON and headlamps are active then Low Beam shall turn ON immediately after pressing the Low Beam switch. Probable Trouble Area 6. BCM connector Fault 7. Front wiring harness circuit short to battery 8. Low Beam bulb blown /lamp damaged 9. BCM ECU fault 10. Low Beam mating connector fault Healing Condition 3. Ignition OFF ON 4. Clear DTC Command Component Details: Low Beam are located at headlamp of vehicle If the IGN is ON or Accessory is ON and headlamps is active then Low Beam shall turn ON immediately after pressing the Low Beam switch. Preliminary Checks: 3. Check Battery Voltage (9V-16V) 4. Check ECU pins for oxidation, bending & damage. Trouble Shooting:-
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