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Vehicle Platform: OSPREY / AMP
ECU Name: PEPS
DTC Troubleshooting Data
Version: 1.2
Date: 29 Mar 2017
Author:
Rajasekhara Reddy
Page: 149 of 369
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.
B131A – 11:- Trunk Door Handle Switch – Short to Ground
Overview:-
ISO Code (DTC Code)
B131A - 11
Customer Symptom
Passive vehicle tailgate unlocking does not work.
Fault Effects (On Vehicle)
Passive vehicle tailgate unlocking does not work.
Lamp Status (If Any)
N.A.
Fault Detection Condition
1. Permanent short circuit of trunk door handle switch.
2. Wire cut & shorting of Connector-1 / Pin-11 signal with
vehicle body or together.
3. Bending of pins-11 of connector-1 and shorting to each
adjacent pin.
Normal Operating Condition
1. Vehicle battery voltage shall be normal.
2. Trunk door handle switch shall not be pressed
continuously for more than 20 sec.
3. All doors should be closed and vehicle should be in un-
lock condition.
4. Valid paired UID should be present in trunk door side
and trunk DHS should be pressed.
Probable Trouble Area
1. Permanent short circuit of trunk door handle switch.
2. Wire cut & shorting of Connector-1 / Pin-15 signal with
vehicle body or together.
3. Bending of pins-15 of connector-1 and shorting to each
adjacent pin.
Healing Condition
1. After fixing short to ground fault on trunk door handle
switch, passive vehicle locking should be performed
from driver DHS or co-driver DHS.
2. This is need for trunk door handle switch to restore
normal functioning.
3. Finally check passive trunk unlocking from trunk DHS.
Table34
:- B131A-11 overview details
Component Details:-
1. Trunk door handle switch
2. Trunk door handle switch assembly pick-tail.
3. PEPS ECU
Preliminary Checks:-
1. Check vehicle battery voltage, it should be normal.
2. Check ECU pins for oxidation, bending or damage.