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Q5/X451 FATC
DTC Troubleshooting Data
Version: 1.0
Date: 16-Oct-2018
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.
Author: ERC
Page: 13 of 202
DTC’s confirmation:-
After rectification, Press Ac button from control panel ensure the following points by AC parameters using TML
diagnostic tool before handing over to customer.
a)
Physical check of AC status change when requested.
b)
Read ECU parameters 4A45, which should be requested values.
Component Location & Image:-
AC System
Connector Location: -
HVAC kit
Connector View & Information: -
Pin Details:-
1
EVAPSensSig
Sensor Temperature
Evaporator Signal
2
EVAPSensGnd
Sensor Temperature
Evaporator Gnd
Inspection Method: -
1)
Connect the sensor connector firmly
2)
If the values seen on the diagnostics tool in read ECU parameters is not getting updated then replace the sensor
3)
If there is a continuity between the sensor signal and ground lines correct the wiring harness (wiring harness short
to ground)