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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: 200 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.
B1322 – 12:- Hardwired wakeup input – Short to Battery
Overview:-
ISO Code (DTC Code)
B1322 - 12
Customer Symptom
1. If vehicle is in sleep mode (i.e. all loads are OFF for
more than 2 min) than ESCL locking will not work by
door transition i.e. open-close or close-open.
Fault Effects (On Vehicle)
1. If vehicle is in sleep mode (i.e. all loads are OFF for
more than 2 min) than ESCL locking will not work by
door transition i.e. open-close or close-open.
Lamp Status (If Any)
N.A.
Fault Detection Condition
1. Permanent short circuit to battery of hardwired
wakeup input from BCM signal.
2. Wire cut & shorting to battery of Connector-2 / Pin-11
signal.
3. Bending of pin-12 of connector-2 and shorting to
adjacent pin.
Normal Operating Condition
1. Vehicle battery voltage shall be normal.
2. No fault on hardwired wakeup input from BCM should
be present.
Probable Trouble Area
1. Permanent short circuit to battery of hardwired
wakeup output from BCM.
2. Wire cut & shorting to battery of Connector-2 / Pin-12
signal with vehicle body.
3. Bending of pin-12 of connector-2 and shorting to
battery pin.
Healing Condition
1. After fixing short to battery fault on hardwired wakeup
output from BCM give Ignition cycle and stop on OFF
clamp state and wait for 2min for PEPS to go into
sleep mode, do the door transition to lock the ESCL.
ESCL shall get locked.
Table 44:- B1322 - 12 overview details
Component Details:-
1. PEPS ECU
2. ESCL ECU
3. BCM ECU
Preliminary Checks:-
1. Check vehicle battery voltage, it should be normal.
2. Check ECU pins for oxidation, bending or damage.