Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 799 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. B1325– 23: Down Switch Stuck– Signal Stuck Low Overview: ISO Code B1325– 23 Customer Symptom No Window down movement. Fault Effects (On Vehicle) No Window down movement. Lamp Status (If Any) N.A. Fault Detection Condition This fault gets logged by BCM if signal stuck low condition is detected for Window Down switch. Normal Operating Condition If window is closed and Window Down switch is pressed then BCM shall immediately start Window down movement. 0Probable Trouble Area 1. BCM connector Fault. 2. Down Switch Stuck input wire short to ground from cockpit wiring harness. 3. Switch damaged or stuck 4. BCM ECU fault. Healing Condition 1. Ignition OFF ON 2. Clear DTC Command Component Details: If Down Switch is pressed then BCM shall provide the pulse to start the window down movement. Preliminary Checks: 3. Check Battery Voltage (12.5 V & above) 4. Check ECU pins for oxidation, bending & damage.
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