Diagnostic Manual MAN-00183
MAXXIMO MINIVAN VX June 2012/Rev 1
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Mahindra Ltd.
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ECU MAIN RELAY
Sl No DTC Description
1
P121B
Main relay opens too early
2
P121A
Main relay sticky/ does not open in time
NORMAL OPERATION
Engine starts properly while cranking
DTC Detecting Condition Probable Causes
No power supply or power supply comes too early or too
late to ECU
Harness or Connectors
ECU relay fuse blown
ECU relay is not working
LAMP STATUS
Engine check lamp OFF
FAULT REACTION
Engine will not start
Smart tester will not get activated
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