Caution, Features and controls, Malfunction indicator lamp (mil) – Polaris 2003 Frontier User Manual

Page 31: Mil diagnostic code summary

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FEATURES AND CONTROLS

Malfunction Indicator Lamp (MIL)

The Frontier is equipped with a

malfunction indicator lamp (CHECK

ENGINE light) to assist your Polaris dealer

in diagnosing problems. The MIL codes

are for reference only. Full diagnostics

must be performed by a Polaris dealer

trained to service EFI systems.
When enabled, the CHECK ENGINE light

will blink in numerical sequences to

indicate the type of failure. For example: two blinks, pause, one blink

is the sequence for code 21. To enable the blink codes, put a 30 amp

automotive fuse in the ACS bypass three times within 2 1/2 seconds,

leaving it in the third time. NOTE: Disconnect the negative battery

lead for 10 seconds to clear the code.

MIL Diagnostic Code Summary

CODE

MIL

Description

21

Yes

Lost synchronization

Synchronization of crankshaft position lost

22

Yes

Throttle position sensor circuit error

Sensor signal is shorted to ground or at battery potential

23

Yes

RAM error

Hardware failure or serial EEPROM not initialized or failure

24

Yes

Speed circuit / sensor error

Crankshaft position sensor failure (if MIL stays on when cranking

there is no speed sensor input)

31

Yes

System too lean

Lambda sensor shorted to ground or battery voltage

32

Yes

02 Sensor circuit error

Short to battery or no activity detected

33

No

System too rich

Short term adaption at upper or lower limit.

34

No

Maximum adaption limit reached

Long-term adaption at upper or lower limit

42

Yes

Temperature sensor circuit error

Sensor short to ground/battery voltage/implausible signal

61

NA

End of sequence message

If the ACS 30 AMP bypass fuse is left in, electrical drainage will

occur. To avoid electrical drainage, always remove the fuse from the

ACS bypass AFTER the End of Sequence message (61) appears.

CAUTION

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