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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: 571 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.
P0633: Immobilizer Key Not Programmed - ECM/PCM
Overview:
DTC Description as per ISO standard
Immobilizer Key Not Programmed - ECM/PCM
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 pairing process is not performed in vehicle
/EMS ECU is fresh & AES-key is not present in EMS.
Normal Operating Condition
. AES key is written successfully in EMS. Authentication between
EMS & Immo is successful
Probable Trouble Area
Immo pairing not done, EMS ECU.
Healing Condition
Perform Immo pairing, 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.
Trouble Shooting:
Step Checks
IF YES
IF NO
1.
Perform immo pairing. Is immo pairing successful and
vehicle got cranked?
Confirm that fault is
rectified.
Call Hot line