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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: 610 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.
connector or wiring
harness
5
Are there any pins backed out from the EMS ECU
Connector
Rectify/Replace
Connectors
Go to Next Step
6
Is the ECM pin K040 short circuited to Ground / Battery.
Rectify the wiring
harness connections
as per the schematic
Go to Next Step
7
Check the L/R ratio of the Relay coil. Is it ~ 0.25 msec?
Go to next step
Call hot line to get
assistance on
whether the High
speed fan relay to
be replaced or not.
8
Fault Persists.
Call Hotline
Repeat the above
steps for re-
confirmation
DTC’s confirmation:
After rectification, Test Drive the vehicle for 2 KM and ensure that no DTC’s are logged in ECM.
Perform the IO / Actuator Test for High Speed fan Relay. Test shall be successful.
Circuit Schematic:
Component Location & Image:-
Check in the Engine Compartment fuse box for the Low Speed fan relay. Fuse Box Cover Image is shown below.