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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: 365 of 737
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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.
B162C - 12: Tailgate State Switch - Circuit short to Battery or Open Circuit
Overview:
ISO Code
B162C - 12
Customer Symptom
1. Interior Roof lamp in Auto mode selection doesn’t
operate when Tailgate is opened.
2. The IC shows Tailgate as closed status, even if the
Tailgate 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 Tailgate is opened.
Lamp Status (If Any)
1. Roof lamp in Auto mode selection is OFF.
2. IC shows Tailgate 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
Tailgate State 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. Rear side wiring harness Short to battery or open
circuit
3. Tailgate State Switch is damaged or stuck or faulty
4. BCM ECU fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Tailgate State Switch, BCM connector
Functionality:
If the Tailgate State Switch is short to Battery or Open Circuit, then the Tailgate State is in closed state.
If the Tailgate State is closed, then BCM shall receive the feedback of Tailgate State as closed status.
Preliminary Checks:
1. Check Battery Voltage (12.5 V & above)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting: