Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 803 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. B1326 - 12: Express down output - Circuit short to Battery Overview: ISO Code B1326 - 12 Customer Symptom Window Down will not operate. Fault Effects (On Vehicle) Window Down will not operate. Lamp Status (If Any) N.A. Fault Detection Condition Window Down function does not operate when Down switch is pressed. Normal Operating Condition Window down function start working only on user request. Probable Trouble Area 1. BCM connector Fault 2. Wiring harness Short to battery or open circuit 3. Express Down switch is damaged or stuck or faulty 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. Trouble Shooting:
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