Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 301 of 855 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. B2252 – 62: Turn Indicator Switch – signal compare failure Overview: ISO Code B2252 – 62 Customer Symptom 1. Turn left indication always on OR 2. Turn right indication always on Fault Effects (On Vehicle) 1. Turn left indication always on OR Turn Right indication always on 2. Battery Drain Lamp Status (If Any) Always ON Fault Detection Condition This fault gets logged by BCM when Turn left or turn right indicator output is short to ground Normal Operating Condition If the IGN is ON and turn left or turn right switch is activated respective turn flashers shall come on Probable Trouble Area 1. BCM connector Fault 2. Turn indicator switch short to ground from cockpit wiring harness 3. Turn left or turn right indicator switch damaged or stuck 4. Combi switch connector fault. 5. BCM ECU fault Healing Condition 1. Ignition OFF ON 2. Clear DTC Command Component Details: Turn left and turn right indicator switch is part of combi switch. If the IGN is ON and turn left indication is given by user then turn left indicator lamps will flash with predefined frequency. If turn right indication is given by user then turn right indicator lamps will flash with predefined frequency. Preliminary Checks: 1. Check Battery Voltage (12.5 V & above) 2. Check ECU pins for oxidation, bending & damage. Trouble Shooting:-
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