Diagnostic Manual (Immobilizer) MAN-00056-21
Scorpio Vlx/Sle/Lx
(Refresh)
Mar 2009/Rev 1
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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
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Mahindra & Mahindra Ltd.
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 errors at EMS ECU and Immobilizer ECU (ICU).
+ 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 ICU
90A5
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