Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 307 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. B2217 – 23: Hazard Switch – Signal Stuck Low Overview: ISO Code B2217- 23 Customer Symptom Hazard function does not operate Fault Effects (On Vehicle) 1. Hazard lamp will not come ON when requested 2. Facia Switch illumination for hazard lamp will not turn ON Lamp Status (If Any) Always OFF Fault Detection Condition This fault gets logged by BCM; if signal stuck low condition is detected for hazard lamp switch. Normal Operating Condition Hazard lamps shall flash with predefined frequency immediately after pressing the hazard lamp switch. Probable Trouble Area 1. BCM connector Fault 2. Hazard switch input wire Short to ground from cockpit wiring harness 3. Switch damaged or stuck 4. Facia Switch connector fault. 5. BCM ECU fault Healing Condition 1. Ignition OFF ON 2. Clear DTC Command Component Details: Hazard lamp switch is part of facia switch bank. If user presses the hazard lamp switch, hazard lamps shall 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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