Vehicle Platform: Tiago,Tigor & Osprey ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 2.0 Date: 22-10-2018 Author: Parag K Page: 353 of 737 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. B1620 - 11: Other Doors Switch - Circuit Short to Ground Overview: ISO Code (DTC Code) B1620 - 11 Customer Symptom 1. The IC shows Other Doors as open status, even if all the other doors are closed as presumed by the customer. 2. Interior Roof lamp in Auto mode selection will ON for 10 minutes. 3. The Mis-lock sound occurs on RKE lock command. NOTE: Here, Other Doors means Passenger door, Rear Left Door and Rear Right Door Fault Effects (On Vehicle) 1. Unnecessary battery power consumption (because Interior Roof lamp in Auto mode selection will always ON for 10 minutes.) 2. The vehicle will not enter into arm state, when RKE lock is given and no alarm functionality will work. Lamp Status (If Any) 1. Interior Roof lamp in Auto mode selection will ON for 10 minutes. 2. Other doors telltale status on IC shows always ON. 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 ground fault is detected for Other Doors 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 and Right side wiring harness short to ground 3. Other Doors Ajar Switch is damaged or stuck or faulty 4. BCM ECU fault Healing Condition 1. Ignition OFF ON 2. Clear DTC Command Component Details: Other Doors Switch, BCM connector Functionality: If the Other Doors Switch is Short to Ground, then the Other Doors state is in opened/ ajar state. If the Other Doors is/ are opened, then BCM shall receive the feedback of Other Doors as open/ ajar status. Preliminary Checks: 1. Check Battery Voltage (9V-16V) 2. Check ECU pins for oxidation, bending & damage. Trouble Shooting:
RkJQdWJsaXNoZXIy MTIwNTUz