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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: 425 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.
P0180: Fuel Temperature Sensor “A” Circuit
Overview:
DTC Description as per ISO standard
Fuel Temperature Sensor "A" Circuit
ECU Pin Number
-
Customer Symptom
CE lamp is on
Fault Effects (On Vehicle)
No critical effect.
IMV operation under stable condition - No trim is used for IMV operation.
Lamp Status (If Any)
CE lamp is on
Fault Detection Condition (Root cause)
This DTC gets logged if the fuel temperature sensor supply (ECU internal
supply) / ADC fails
Normal Operating Condition
Diagnostic tool display the Fuel temperature status at ignition ON
Probable Trouble Area
Fuel Temperature sensor, EMS ECU, Wiring harness
Component Details:
Fuel temperature sensor is NTC resistor which resistance varies according to the fuel temperature i.e. the resistance will
decrease as the fuel temperature increase. vehicle's
fuel temperature sensor
is basically the component that tells your
engine control unit (ECU) to adjust the amount of
fuel
it injects. When your fuel
is warm, it is less dense and it burns more
quickly. On the other hand, when
fuel is cold
fuel, it is denser and burns slower.
Preliminary Checks
x
Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. If yes,
go ahead with next steps. If not, check for other DTC’s presence.
x
Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to earlier
issue closure.
x
Check whether P0642/P0643/P0652/P0653 are logged by EMS. If so, rectify them by following their rectification
procedure.
x
Check whether the EMS ecu is receiving power supply at its supply pins. Check whether the EMS main relay
contacts are fine.