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Q501 4 Cylinder MT Application
DTC Troubleshooting Data
Version: 0.1
Date: 21-Sep-2018
Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta
Checked By: Yogesh Jadhav
Approved By: Satish Kumar P
Page: 90 of 1052
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.
Trouble Shooting:
Step Checks
IF YES
IF NO
1.
Read IVN DTCs in ECM. Is MTO logged against RCM in
ECM in current state?
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.
Go to step 2.
Clear DTC.
2.
Is continuity there?
Check the
resistance between
ECM CANH
and ECM CANL of
ECM connector in
vehicle wiring
harness. (with IPC
connected
on the vehicle)
Go to step 3.
Repair the wiring
harness if
continuity is not
there. Clear DTC.
3.
Is Resistance R = 120 ohm.
Clear DTC.
Check the
continuity between
ECM CAN_L & IPC
CAN_L
And
ECM CAN_H & IPC
CAN_H
In vehicle side
connectors
So Repair the
wiring harness if
continuity is not
there. Clear DTC
Go to step 4.
4.
If fault still persists.
then replace sensor
and if fault still
persists then call
Hotline.
Follow the above
procedure again for
Reconfirmation.