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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: 349 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.
B130D - 12: Right Rear Door Ajar Switch - Circuit short to Battery or Open Circuit
Overview:
ISO Code
B130D - 12
Customer Symptom
1. Interior Roof lamp in Auto mode selection doesn’t
operate when Rear Right door is opened.
2. The IC shows Rear Right door as closed status, even
if the Rear Right door Rear Right 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 Rear Right door is opened.
Lamp Status (If Any)
1. Roof lamp in Auto mode selection is OFF.
2. IC shows Rear Right 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
Right Rear 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. Right Rear 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:
Right Rear Door Switch, BCM connector
Functionality:
If the Right Rear Door Switch is short to Battery or Open Circuit, then the Right Rear Door state is in closed state.
If the Right Rear Door is closed, then BCM shall receive the feedback of Right Rear Door as closed status.
Preliminary Checks:
1. Check Battery Voltage (12.5 V & above)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting: