X2 Eagle ESP DTC Troubleshooting Data Version: 1.0 Date: 23-Oct-15 Author: ERC, Chassis E&E CoC Page: 181 of 224 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. U0140 - 08:- Lost Communication With Body Control Module Overview: ISO Code U0140-08 Customer Symptom None Fault Effects (On Vehicle) ABS, EBD & ESP – Available Lamp Status (If Any) ABS – OFF, EBD – OFF, ESP – OFF Fault Detection Condition 1. BCM connector is not connected properly or disconnected from its location. 2. CAN wire from BCM connector side are disconnected 3. BCM IGN & Battery fuse blown. 4. CAN_H, CAN_L or both lines of BCM are open circuit Normal Operating Condition BCM ECU communicates properly with TML diagnostic Tool. Probable Trouble Area 1. BCM connector / BCM fuse. 2. CAN lines of BCM ECU Healing Condition 1. BCM ECU is connected and no wiring harness issues from TCM side 2. CAN_H, CAN_L or/ and both lines of BCM are connected properly Preliminary Check: 1. Check resistance in Diagnostic CAN pin no. 6 and 14. It should be 120 Ω. 2. 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. 3. 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) 4. Read IVN DTCs in ABS/ESP in IGN ON condition Note: After rectification please give Ignition latch to heal the DTC.
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