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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: 544 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.
P0351-12: Ignition Coil “A” Primary Control Circuit High– Circuit Short to Battery
Overview:
ISO Code
P0351-12
Customer Symptom
1. Engine shuts off and can be only started after Ignition switch resetting or coil
has cooled down.
2. Misfires may happen
Fault Effects (On Vehicle)
1. Engine shuts off and can be only started after Ignition switch resetting or coil
has cooled down.
2. Misfires may happen
3. Igniton failure may lead to misfire & stall the engine.
Lamp Status (If Any)
MIL ON after 1 drive cycle
Fault Detection Condition
This fault gets logged when the Ignition coil A control pin of EMS ECU is short
Circuited to battery supply
Normal Operating Condition
Healthy wiring harness connections between Ignition Coil A and EMS ECU
Probable Trouble Area
Wiring Harness connections, Ignition coil A
Healing Condition
After 3 driving cycle
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:
An
ignition coil
(also called a
spark coil
) is an induction coil in an automobile's ignition system which transforms the
battery's low voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel.
The wire that goes from the ignition coil to the distributor and the high voltage wires that go from the distributor to each
of the spark plugs are called spark plug wires or high tension leads.
Preliminary Checks:
1) Loose/ Damaged Connections between Ignition coil A and EMS ECU.
2) Check for back out of pins at both Ignition Coil connector and ECU connector.
3) Check for damage of pins at both Ignition Coil connector and ECU connector.