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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: 94 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.
B164A - 14:- IGN Relay Feedback - circuit short to ground or open
Overview:-
ISO Code (DTC Code)
B164A – 14
Customer Symptom
1. Vehicle will not start.
2. Green color led will not appear of engine start/stop
button during ignition cycle.
Fault Effects (On Vehicle)
1. Vehicle will not start.
2. Green color led will not appear of engine start/stop
button during ignition cycle.
Lamp Status (If Any)
1. Immo telltale will always keep on blinking and will never
turn-off or steady ON.
Fault Detection Condition
During IGN ON or cranking the vehicle.
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 ignition relay.
2. Ignition relay feedback line between PEPS ecu pin-19
and vehicle ground signal.
Healing Condition
IGN OFF
ON
Table21
:- B164A- 14 overview details
Component Details:-
1. PEPS ECU.
2. Ignition relay.
Preliminary Checks:-
1. Check Battery Voltage (9V-16V) .
2. Check ECU pins for oxidation, bending & damage.