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OSPREY- Application
DTC Troubleshooting Data
Version: 4.0
Date: 10-02-2017
Prepared by: Mithipati Prasad
Checked by: G S Raju / Senthilnathan S
Page: 621 of 654
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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.
Trouble Shooting:
Start
Read IVN DTCs in ECM
Is
MTO logged against RCM
in ECM in current state
?
No (In history)
1. Check continuity between ECM CAN_H to RCM CAN_H and ECM
CAN_L to RCM CAN_L in vehicle wiring side connector.
2. Check if RCM ECU fuses are blown.
3. Also, check RCM ECU is powered up properly. RCM Battery, IGN
and GND connected properly with RCM ECU.
Is continuity
there?
Repair the wiring harness if
continuity is not there
Clear DTC
Stop
Yes
Yes
No
U0151 Lost of communication with Restrain Control
Module- Bus Signal/Message Failure
Check the continuity between
ECM CAN_L & IPC CAN_L
And
ECM CAN_H & IPC CAN_H
In vehicle side connectors
Check the resistance between ECM CANH
and ECM CANL of ECM connector in
vehicle wiring harness. (with IPC connected
on the vehicle)
Is Resistance
R = 120 ohm
?
No
Yes