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Nexon Gasoline – EMS ECU Bosch
DTC Troubleshooting Manual
Version: 0.1
Date: 26-08-2017
Prepared By: Sunu S Babu/Yogesh Jadhav
Checked By: Yeshwant Jadhav
Approved By: Satish Kumar
Document Part No: 2921 02 224 A1736
Page: 1094 of 1203
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.
P3002-71: Stalled Starter– Actuator Stuck
Overview:
ISO Code
P3002-71
Customer Symptom
Vehicle will not Start
Fault Effects (On Vehicle)
Vehicle will not Start. Start will be inhibited for 10 sec.
Lamp Status (If Any)
CE Lamp ON after 1 drive cycles
Fault Detection Condition
Ignition ON, Crank attempt and then Starter Motor Stalls.
Normal Operating Condition
Starter Motor Cranks Engine properly
Probable Trouble Area
Starter Relay / Starter Relay-2 contacts welded, Starter Motor Solenoid
contacts Stuck closed, Starter motor electrically / physically damaged, Starter
Diodes damaged, EMS ecu starter control Circuit failure due to improper wiring
harness connections.
Healing Condition
After 1 Drive cycles and Ignition ON
Fault permanent deletion
1. Clear DTC Command form Scan tool
2. Stack Over Flow.
3. 40 warm up cycles.
4.ECU flashing
5. ECU Power-Fail
Component Details:
Starter Motor is a brushless DC motor, which is used to Crank the Engine. Starter Motor has an inbuilt Solenoid within,
which will be enabled when the Starter motor has to be engaged with the flywheel. Starter Motor operation will be
controlled by EMS ecu with the help of Starter Relay and Crank Inhibit relay.
Preliminary Checks:
1) Starter Relay / Starter Relay-2 contacts welded / damaged.
2) Starter Solenoid Damaged or stuck closed.
3) Starter Diodes damaged.
4) EMS ecu Faulty