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OSPREY- Application
DTC Troubleshooting Data
Version: 4.0
Date: 10-02-2017
Prepared by: Mithipati Prasad
Checked by: G S Raju / Senthilnathan S
Page: 259 of 654
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.
P16F3: ECU Safety Monitoring fault. Internal to ECU
Overview:
ISO Code
P16F3
Customer Symptom
Vehicle would not start
Fault Effects (On Vehicle)
ECU Software reset happens
Lamp Status (If Any)
-
Fault Detection Condition
ECU internal failure
Normal Operating Condition
ECU Functions as per design intention
Probable Trouble Area
EMS ECU
Healing Condition
After 3 drive cycles
Fault permanent deletion
1. scan tool Service 14
2. Stack Over Flow.
3. 40 warm up cycles.
4.ECU flashing
5. ECU power fail
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:
x
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 ot
her DTC’s presence.
x
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.
x
Check whether the EMS is receiving Battery supply and Ground
x
Check whether the Battery is healthy
Trouble Shooting:
Step
Checks
IF YES
IF NO
1.
Check whether the EMS ECU is receiving supply and
Ground. Check especially the earthing points whether
they are properly connected after removing body paint.
Any problem found?
Go to step 2
Rectify wiring
harness
connections as
per schematic
2.
Check whether the battery is healthy
Go to step 3
Repair Battery
3
If fault still persists
Replace EMS ECU
Repeat above
procedure for
reconfirmation