HARRIER BOOK 2

Vehicle Platform: OSPREY / AMP

ECU Name: PEPS

DTC Troubleshooting Data

Version: 1.2

Date: 29 Mar 2017

Author:

Rajasekhara Reddy

Page: 90 of 369

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 - 12:- IGN Relay Feedback - circuit short to battery

Overview:-

ISO Code (DTC Code)

B164A – 12

Customer Symptom

Green color LED continuously ON in all modes.

Fault Effects (On Vehicle)

Green color LED continuously ON in all modes.

Lamp Status (If Any)

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 ignition relay.

2. Ignition relay feedback line between PEPS ecu pin-19

and battery signal.

Healing Condition

IGN ON



OFF

Table 20

:- B164A- 12 overview details

Component Details:-

1. PEPS ECU.

2. Ignition relay

Preliminary Checks:-

Check Battery Voltage (9V-16V) .

Check ECU pins for oxidation, bending & damage.