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Immobilizer –DTC Troubleshooting Data
Version: 1.
2
Date:
03-June-2014
Prepared Author
:
Sarang K/Mithipati P
Review & approved by
: R A Rode (ERC-E&E)
Page: 45 of 67
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.
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. 15) vehicle side connector to OBD connector CAN_H (pin no. 6) and
CAN_L (pin no. 14) vehicle side connector to ODB connector (pin no.14).
4.
Read IVN DTCs in IPC in IGN ON condition.