3367 / 4910
Vehicle Platform: OSPREY / AMP
ECU Name: PEPS
DTC Troubleshooting Data
Version: 1.2
Date: 29 Mar 2017
Author:
Rajasekhara Reddy
Page: 85 of 369
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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.
B1649 - 14:- ACC Relay Feedback - circuit short to ground or open
Overview:-
ISO Code (DTC Code)
B1649 - 14
Customer Symptom
During IGN cycle, LED color should change in sequence of LED
OFF – LED OFF – Green ON – LED OFF with every press of
the Engine start/stop button.
Fault Effects (On Vehicle)
During IGN cycle, LED color should change in sequence of LED
OFF – LED OFF – Green ON – LED OFF with every press of
the Engine start/stop button.
Lamp Status (If Any)
NA
Fault Detection Condition
During IGN OFF.
Normal Operating Condition
During IGN cycle, LED color should change in sequence of LED
OFF - Amber ON – Green ON – LED OFF with every press of
the Engine start/stop button.
Probable Trouble Area
1. Permanent short of output of accessory relay.
2. Accessory relay feedback line between PEPS ecu pin-
15 and battery signal.
Healing Condition
IGN OFF
ON
Table 169
:- B1649- 14 overview details
Component Details:-
1. PEPS ECU.
2. Accessory relay
Preliminary Checks:-
1. Check Battery Voltage (9V-16V)
2. Check ECU pins for oxidation, bending & damage.