TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

Vehicle Platform: Zest, Bolt, Tiago, Tigor, Osprey, Q501, X451, Q502 ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 3.1 Date: 30-11-2019 Author: BCM COC Page: 396 of 1106 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. B1308 - 12: Passenger Door Ajar Switch - Circuit short to Battery Overview: ISO Code B1308 - 12 Customer Symptom 1. Interior Roof lamp in Auto mode selection doesn’t operate when Passenger door is opened. 2. The IC shows Passenger Door as closed status, even if the Passenger 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 Roof lamp in Auto mode selection does not operate when Passenger door is opened. Lamp Status (If Any) 1. Roof lamp in Auto mode selection is OFF. 2. IC shows Passenger 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 fault is detected for Passenger 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. Left side wiring harness Short to battery 3. Passenger 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: Passenger Door Switch, BCM connector Functionality: If the Passenger Door Switch is short to Battery, then the Passenger door state is in closed state. If the Passenger door is closed, then BCM shall receive the feedback of Passenger door as closed status. Preliminary Checks: 1. Check Battery Voltage (12.5 V & above) 2. Check ECU pins for oxidation, bending & damage. Trouble Shooting: