HARRIER BOOK 2

X2 Eagle

ESP DTC Troubleshooting Data

Version: 1.0

Date: 23-Oct-15

Author: ERC, Chassis E&E CoC

Page: 178 of 224

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.

U0100-08:- Lost Communication With ECM(MTO)

Overview:

ISO Code

U0100-08

Customer Symptom

Warning Light Displayed

Fault Effects (On Vehicle)

ABS – Available(without Drag torque control), EBD –

Available, ESP – Depends on fault type

Lamp Status (If Any)

ABS – OFF, EBD – OFF, ESP – Depends on fault type

Fault Detection Condition

1. ECM connector is not connected properly or disconnected

from its location.

2. CAN wire from ECM connector side are disconnected

3. ECM IGN & Battery fuse blown.

4. CAN_H, CAN_L or both lines of ECM are open circuit

Normal Operating Condition

ECM ECU communicates properly with TML diagnostic Tool.

Probable Trouble Area

1. ECM connector / ECM fuse.

2. CAN lines of ECM ECU

Healing Condition

1. ECM ECU is connected and no wiring harness issues

from ECM side

2. CAN_H, CAN_L or/ and both lines of ECM are connected

properly

Preliminary Check:

Check resistance in Diagnostic CAN pin no. 6 and 14. It should be 120 Ω.

Check for short conditions between CAN_H (pin no. 26)-CAN_L (pin no. 14), CAN_H (pin no. 26)-GND (pin no. 13),

CAN_L (pin no. 14)-GND (pin no. 13), CAN_H (pin no. 26)-Vbatt (pin no. 1) and CAN_L (pin no. 14)-GND (pin no. 13).

There should not be any short circuit conditions.

Check continuity between IPC CAN_H (pin no. 8) vehicle side connector to OBD connector CAN_H (pin no. 6) and

CAN_L (pin no. 7) vehicle side connector to ODB connector (pin no.14)

Read IVN DTCs in ABS/ESP in IGN ON condition

Note: After rectification please give Ignition latch to heal the DTC.