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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: 271 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.
P0253-11: Metering Unit electrical failure (circuit short to ground)
Overview:
DTC Description as per ISO standard
Metering Unit electrical failure (s circuit)
ECU Pin Number
A06, A07
Customer Symptom
MIL ON.
Engine stop.
Fault Effects (On Vehicle)
Engine Stop (Starting disabled)
Lamp Status (If Any)
MIL ON1 (Lamp turn On immediately when fault detected)
Fault Detection Condition (Root cause)
Ignition ON
Normal Operating Condition
No Fault Code
Probable Trouble Area
Electrical connection from Inlet metering valve to ECU open
circuit.
Healing Condition
Repair the connection between ECU pin A06 & A07 and inlet
metering valve.
Clear through diagnostic tool
Ignition OFF & ON
Component Details:
High pressure pump/Inlet metering valve or MPROP creates the system pressures required by the Common
Rail Injection System for all operating conditions of the engine.The system pressure governing is by single actuator
control strategy.
Preliminary Checks:
1. 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.
2. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to
earlier issue closure.
3. Check for any other faults presence related to ECU Internal power supplies; Follow rectification process for those
faults, before proceeding further.
4. Check for electrical continuity between ECU to Inlet metering valve/MPROP connector as per circuit schematic
and rectify electrical discontinuity if noticed.
5.
Check Inlet metering valve/MPROP circuit wrong assembly/fitment etc