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
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© 2014 Mahindra & Mahindra Ltd.
Combination – 12
ICU
EMS
Code
Description
Code
Description
P804A
Negative Acknowledgement
P1832
Immobilizer Authentication Failed
P8048
F() mismatch
P1833
F( ) result mismatch/Signature Mismatch
DTC INFORMATION
PROBABLE CAUSES OF
FAILURE
NORMAL OPERATION
Ignition ON
After successful authentication the vehicle starts.
DTC DETECTING CONDITIONS
This combination is registered when EMS ECU and ICU
go out of synchronization due to multiple occurrences
of combination 9.
DTC REACTIONS
Engine Check Lamp: Blinking.
Security tell tale lamp: Off
Engine will crank, but will not start
Disturbance in CAN
circuit.
Corrective Action:
Check the CAN circuit according to the procedure given in the end of the manual
(Appendix 1
Do the EMS assignment to bring back the ICU and EMS ECU back to sync.
DIAGNOSTIC MANUAL
SCORPIO
IMMOBILISER
MAN-00281
DEC 2014/Rev 1
43