Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 365 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. B1301 - 12: Driver Door Ajar Switch - Circuit short to Battery or Open Circuit Overview: ISO Code B1301- 12 Customer Symptom 1. Interior Roof lamp in Auto mode selection doesn’t operate when driver's door is opened. 2. The IC shows Driver Door as closed status, even if the driver door is opened as presumed by the customer. 3. The Mis-lock sound does not occurs on RKE lock command. 4. The vehicle will get lock on RKE lock command. Fault Effects (On Vehicle) 1. Interior lamps do not operate when driver's door opened. Lamp Status (If Any) 1. Roof lamp in Auto mode selection is OFF. 2. IC shows Driver Door closed status always Fault Detection Condition This fault will be logged after the input switch test routine execution. User has to operate the switch manually during routine. If short to battery or open circuit fault is detected for Driver Door Ajar Switch, then this DTC code will be returned with the routine results. Normal Operating Condition There should not be any fault returned by routine Probable Trouble Area 1. BCM connector Fault 2. Right side wiring harness Short to battery or open circuit 3. Driver Door Ajar Switch is damaged or stuck or faulty 4. BCM ECU fault Healing Condition 1. Ignition OFF ON 2. Clear DTC Command Component Details: Driver Door Switch, BCM connector Functionality: If the Driver door state is short to Battery or Open Circuit, then the Driver door state is in closed state. If the Driver door is closed, then BCM shall receive the feedback of Driver door as closed status. Preliminary Checks: 1. Check Battery Voltage (12.5 V & above) 2. Check ECU pins for oxidation, bending & damage. Trouble Shooting:
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