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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: 855 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.
P081A-11: Crank Inhibit Starter Relay Circuit Low – Circuit Short to Ground
Overview:
ISO Code
P081A-11
Customer Symptom
Vehicle may not Start
Fault Effects (On Vehicle)
Crank will be inhibited
Lamp Status (If Any)
CE Lamp ON after 1 drive cycle
Fault Detection Condition
Ignition ON and Starter Relay-2 control pin of EMS ECU is short Circuited to
Ground.
Normal Operating Condition
Wiring Harness connections as per Circuit schematic between EMS ECU and
Starter Relay-2, Relay Fully operational.
Probable Trouble Area
Improper Wiring Harness Connections.
Healing Condition
After 1 Drive cycles
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 Relay-2 is a normally Open relay. It is an electrically controlled switch. By energizing the coil of the relay, its
contacts get closed.
Preliminary Checks:
1) Loose/ Damaged Connections between Starter Relay-2 and EMS ECU.
2) Loose/ Damaged Connections between Starter Relay-2 and Main relay supply or Starter Relay-2 & Starter
Solenoid.
3) Check for back out of pins at ECU connector.
4) Check for damage of pins at ECU connector.