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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: 16 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.
P1D39-04: A/D converter (system internal failures)
Overview:
DTC Description as per ISO standard
A/D converter (general signal failure)- General Electrical
failure
ECU Pin Number
All analog signal pins
Customer Symptom
MIL ON.
Fault Effects (On Vehicle)
Analog signals related ECU functionalities will not work.
Lamp Status (If Any)
MIL ON1 (Lamp turn On immediately when fault detected)
Fault Detection Condition (Root cause)
Ignition ON
Normal Operating Condition
No Faults related to ADC converter
Probable Trouble Area
EMS ecu power supply / Ground wiring harness connections,
EMS ecu
Healing Condition
Rectify the error
Clear through diagnostic tool
Ignition OFF & ON
Component Details:
EMS ECU is an electronic controller which controls the Engine functionality by interfacing with various sensors, actuators
And other controllers (via CAN).
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. Check for pin back out at EMS ecu connector or EGR valve connector.
3. Check whether the EMS is receiving Battery supply and Ground.
4. Check whether the Battery is healthy