HARRIER BOOK 2

X2 Eagle

ABS DTC Troubleshooting Data

Version: 1.0

Date: 03-Dec-15

Author: ERC, Chassis E&E CoC

Page: 133 of 154

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

Lamp Status (If Any)

ABS – OFF, EBD – OFF

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 in IGN ON condition

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