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Q5/X451 FATC
DTC Troubleshooting Data
Version: 1.0
Date: 16-Oct-2018
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.
Author: ERC
Page: 161 of 202
Preliminary Check
1.
Check resistance in Diagnostic CAN pin no. 6 and 14. It should be 120ohm.
2.
Check for short conditions between CAN_H-CAN_L, CAN_H-GND, CAN_L-GND, CAN_H-Vbatt and
CAN_L-GND. There should not be any short circuit conditions.
3.
Check continuity between IPC CAN_H (pin no. 25) vehicle side connector to OBD connector CAN_H (pin
no. 6) and CAN_L (pin no. 26) vehicle side connector to ODB connector (pin no.14).
4.
Turn ignition ON and Read IVN DTCs in IPC