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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: 574 of 654
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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.
P3018: No response received by EMS from VICM ECU
Overview:
DTC Description as per ISO standard
No communication from VICM
ECU Pin Number
-
Customer Symptom
Vehicle cannot be started.
Fault Effects (On Vehicle)
Vehicle cannot be started.
Lamp Status
Immobilizer status lamp will come ON
Fault Detection Condition (Root cause)
This fault occurs when EMS does not receive any response for its
command from VICM ECU.
Normal Operating Condition
Authentication between EMS & Immo is successful.
Probable Trouble Area
CAN Communication, Immo damaged, Immo not connected,
Immo’s power supply Off.
Healing Condition
After fault rectification, Turn Ignition Off and ON.
Component Details:
Immobilizer system is designed to prevent vehicle theft by electronically disabling the engine starting system. The engine
can be started only with vehicle’s original immobilizer ignition key, which has an electronic identification
programmed
code. Immobilizer unit (ICU) is an add-on part on the ignition switch, fitted on the steering column. The engine can be
started only with the vehicle’s original immobilizer ignition key. The electronic key
communicates the identification code to
ICU when the key is turned to the "Ignition ON" position.
Engine will allow the Vehicle cranking only if the authentication between EMS and IMMO is successful and Transponder /
key used for cranking is paired to the Immobilizer unit.
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 other DTC’s presence.
x
Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to
earlier issue closure.
x
Check whether the Immo is connected in vehicle. If not connect it.
x
Check whether the CAN bus is Off. If yes, rectify the CAN bus fault.
x
Check whether the immobilizer unit is damaged.
Trouble Shooting:
Step Checks
IF YES
IF NO
1.
Ensure that Immo is connected in the vehicle and it is
receiving power supply. Fault rectified?
Confirm that fault is
rectified.
Go to Next step
2
Check whether CAN bus is off / Error passive
Rectify the CAN
Go to Next step