HARRIER BOOK 2

Q501 4 Cylinder MT Application

DTC Troubleshooting Data

Version: 0.1

Date: 21-Sep-2018

Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta

Checked By: Yogesh Jadhav

Approved By: Satish Kumar P

Page: 130 of 1052

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.

P0525-96: Cruise control disabling due to level 2 monitoring of driver assistance system (system internal

failures)

Overview:

DTC Description as per ISO standard

Cruise control disabling due to level 2 monitoring of driver

assistance system - Component Internal Failure

ECU Pin Number

Customer Symptom

Fault Effects (On Vehicle)

Lamp Status (If Any)

OFF

Fault Detection Condition (Root cause)

Ignition ON

Normal Operating Condition

Fault condition no more present

Probable Trouble Area

EMS ECU.

Healing Condition

1. Check functionality of cruise control and ACC first.

2. Run the diagnostic procedures to check the ECU Power &

ground.

3. Check the integrity of the PINs of the ECU, if the fault still

occurs, replace the ECU and reprogram the controller

Component Details:

EMS ECU is an electronic controller which controls the Engine functionality by interfacing with various sensors, actuators

And other controllers (via CAN).

Preliminary Checks:

1. Check whether the customer voice / view about the issue is matching with the fault effects mentioned above.

2. If yes, go ahead with next steps. If not, check for other DTC’s presence.

3. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to

4. Earlier issue closure. Check for pin back out at EMS ecu connector or EGR valve connector.

5. Check whether the EMS is receiving Battery supply and Ground

6. Check whether the Battery is healthy.