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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: 77 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 ABS in
ECM in current state?
1. Check continuity
between ECM
CAN_H to ABS
CAN_H and ECM
CAN_L to ABS
CAN_L in vehicle
wiring side
connector.
2. Check ABS ECU
fuses (Battery fuse
25A, Ignition fuse
5A) blown.
3. Also, check ABS
ECU is powered up
properly. ABS
Battery, IGN and
GND connected
properly with ABS
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 continuity
between
ECM CAN_H to
IPC CAN_H and
ECM CAN_L to IPC
CAN_L
Repair the wiring
harness.
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.
DTC’s confirmation
(checks before handing over vehicle to customer)
: