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Diagnostic Manual

 (Immobilizer) 

 

MAN-00056

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1

 

 

Scorpio Vlx/Sle/Lx 

(Refresh)

 

 

Mar 2009/Rev 1

 

All copyrights reserved by  

The repair methods given by the manufacturer in this document are based on the technical specifications current at the time of release. The methods may be modified as a result of changes introduced 
by the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part or whole of the 

present document, are prohibited without the prior written consent of 

 Mahindra & Mahindra Ltd.

  

Contents 

 

 

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How to use this manual 

 

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Overview of in-vehicle communication network 
 

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Recommended troubleshooting process 
 

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Warranty/Other information 

 

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Key Assignment guideline 

 

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Key Assignment process. 
 

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EMS ECU replacement  

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Immobilizer ECU replacement  

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EMS and Immobilizer ECU replacement - Both keys available 

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List of Unavailable Services 

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Index of DTC codes 

 

o

 

Wiring Diagram 

 

Summary of Contents for Scorpio Lx

Page 1: ...R www teknetmahindra com RELEASED BY TECHNICAL PUBLICATION CELL MAHINDRA MAHINDRA LTD Rev1 MARCH 2009 All information contained in this manual is most up to date at the time of publication However specifications and procedures are subject to change without notice This manual is strictly meant for restricted internal circulation within M M Authorized dealer service centers MAN 00056 Vlx Sle Lx ...

Page 2: ...rized persons CoTEKs can work on the immobilizer system in conjunction with M M TEKline This manual covers Procedures to be followed while reassigning old keys or assigning new keys to a vehicle Procedures to be followed while replacing Engine Management System EMS ECU or Immobilizer ECU ICU Retrieving DTCs from ECU and or ICU analyzing the complaint and taking corrective action In spite of our be...

Page 3: ...essories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Contents o How to use this manual o Overview of in vehicle communication network o Recommended troubleshooting process o Warranty Other information o Key Assignment guideline o Key Assignment p...

Page 4: ...ble shooting process If the DTC code is known then go to the Index of DTC code and click on the DTC The codes are hyperlinked and the respective page containing the trouble shooting procedure for that DTC will be displayed The following is the structure of the Diagnostic Manual Trouble shooting process Brief description about the sensor Actuator and its functions Possible defect codes related to t...

Page 5: ...thods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Overview of the in vehicle communication network Engine EMS E...

Page 6: ...nt units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Recommended Trouble Shooting Process Customer complaint Record Understand Customer Verbatim What happened When it happened What was the event before that Does it happen all the ...

Page 7: ...n translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Warranty Other Information All failures complaints encountered on EMS ECU and or ICU controllers need to be reported through a Common Rail Failure Report CrFR Service Complaint Report SCR Replacement of any of the EMS ECU or ICU controller requires approval ...

Page 8: ...ous component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Key assignment guideline Note Only 2 keys vehicle possible at any point of time Notes 1 Duplicate key should be ordered after customer verification by the dealer 2 Fi...

Page 9: ...acturer in the production of the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Key Assignment Process Important Note 1 The vehicle can be started without completing the TOOL PROGRAMMING KEY 2 and AFTER SALES ...

Page 10: ...he various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd EMS ECU Replacement Important Note 1 The vehicle can be started without completing the TOOL PROGRAMMING KEY 2 and AFTER SALES CODE 2 stages However the vehicle...

Page 11: ...cturer in the production of the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Immobilizer ECU ICU Replacement Important Note The vehicle can be started without completing the TOOL PROGRAMMING KEY 2 and AFTER ...

Page 12: ... The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd EMS ECU and Immobilizer ECU ICU replacement Both keys available Important Note 1 The vehicle can be started without completing the TOOL PROGRAMMING KEY 2 and AFTER SALES CODE 2 stages However the vehicle cannot be attended in future for any w...

Page 13: ...arious component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd List of Unavailable Services The following actions are not possible 1 Replacement of EMS ECU when both keys are not available 2 Replacement of Immobilizer ECU ICU ...

Page 14: ...ion of the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Index of DTCs Code Label Page No 90A0 Key is rejected by the Immobilizer ECU 13 90A1 Invalid Transponder password is found 14 90A2 No response from EMS...

Page 15: ...ten consent of Mahindra Mahindra Ltd Immobilizer Immobilizer code DTC Diagnostic item 90A0 Key is rejected by Immobilser ECU EMS code DTC Diagnostic item P 0513 Invalid Key error Vehicle behaviour Engine does not start check lamp will blink ON Probable Cause Invalid key error Key is rejected by Immobiliser ECU Corrective Action Replace the key Perform the transponder learning Clear error at both E...

Page 16: ...whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Immobilizer code DTC Diagnostic item 90A1 Invalid Transponder password is found EMS code DTC Diagnostic item P 0513 Invalid Key error Vehicle Behavior Engine not starting Probable Cause Somebody duplicated the mechanical key and tried starting the vehicle Theft attempt is made Corrective Action ...

Page 17: ...ahindra Mahindra Ltd Immobilizer code DTC Diagnostic item 90A2 No response from EMS ECU after signature mismatch If more than one error is found in EMS ECU please follow the priority of the errors during Here below the errors are listed in the priority error EMS code DTC Diagnostic item No error code recorded Probable Cause Wrong dataset is flashed in the EMS ECU Corrective Action Flash the correc...

Page 18: ...cal specifications current at the time of release The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd 90A2 ...

Page 19: ...item 90A3 No EMS ACK after the signature response EMS code DTC Diagnostic item P 1832 Immobilised conditon Vehicle behaviour Engine does not start check lamp will blink ON Probable Cause No EMS Ack after the signature mismatch Theft attempt is made Corrective Action Clear all errors in both EMS and ICU If more than one error is found in EMS please follow the priority of the errors during Here belo...

Page 20: ...sent document are prohibited without the prior written consent of Mahindra Mahindra Ltd Corrective Action Check the CAN wiring if it is OK then look at the Immobilizer Perform EMS and ICU learning Clear all errors in both EMS and ICU EMS Error DTC Diagnostic item P 1832 Immobilized condition Probable Cause Immobilizer circuit is faulty Immobiliser ECU is not working properly Transponder is not wor...

Page 21: ...cal specifications current at the time of release The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd 90A3 ...

Page 22: ...the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd Immobilizer code DTC Diagnostic item 90A4 Mismatch in check sum 1 EMS Error DTC Diagnostic item P 1832 Immobilized condition Probable Cause Wrong dataset is f...

Page 23: ...d Immobilizer code DTC Diagnostic item 90A5 Mismatch in Checksum 2 EMS Error DTC Diagnostic item P 183B EMS is locked Vehicle behaviour Engine does not start check lamp will blink ON Probable Cause Invalid immobilizer CAN wiring related problem EMS is locked Corrective Action Check the CAN wiring if it is correct replace immobiliser Perform transponder learning Perform ICU EMS learning Clear the e...

Page 24: ...cal specifications current at the time of release The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd 90A5 ...

Page 25: ...zer code DTC Diagnostic item 90A6 Mismatch in Checksum 3 EMS Error DTC Diagnostic item P 1832 Immobilized condition Vehicle behaviour Engine does not start check lamp will blink ON Probable Cause EMS is responding in wrong manner Invalid immobiliser ICU EMS not learned Corrective Action Replace immobiliser ECU Perform transponder learning Perform ICU EMS learning Clear all errors in both EMS and I...

Page 26: ...cal specifications current at the time of release The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured The reproduction translation transmission in part or whole of the present document are prohibited without the prior written consent of Mahindra Mahindra Ltd 90A6 ...

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