Misfire

Monitor ID

Test ID

Scaling

Unit

Description

$A1

$0B

Multiply by 1

Time

Exponential Weighted Moving Average (EWMA) misfire for all cylinders:

EWMA = Total misfire counts for last driving cycle * 0.1 + Last EWMA * 0.9

Misfire counts for last 10 driving cycles - Total

$A1

$0C

Multiply by 1

Time

Ignition switch to the ON position: Total misfire counts for last driving cycle

Engine running: Total misfire counts for current driving cycle Misfire counts for last or current driving cycle - all cylinders

$A2

$0B

Multiply by 1

Time

Exponential Weighted Moving Average (EWMA) misfire for cylinder 1:

EWMA = Total misfire counts for last driving cycle * 0.1 + Last EWMA * 0.9

Misfire counts for last 10 driving cycles - Total

$A2

$0C

Multiply by 1

Time

Ignition switch to the ON position: Total misfire counts for last driving cycle

Engine running: Total misfire counts for current driving cycle Misfire counts for last or current driving cycle - cylinder 1

$A3

$0B

Multiply by 1

Time

Exponential Weighted Moving Average (EWMA) misfire for cylinder 2:

EWMA = Total misfire counts for last driving cycle * 0.1 + Last EWMA * 0.9

Misfire counts for last 10 driving cycles - Total

$A3

$0C

Multiply by 1

Time

Ignition switch to the ON position: Total misfire counts for last driving cycle

Engine running: Total misfire counts for current driving cycle Misfire counts for last or current driving cycle - cylinder 2

$A4

$0B

Multiply by 1

Time

Exponential Weighted Moving Average (EWMA) misfire for cylinder 3:

EWMA = Total misfire counts for last driving cycle * 0.1 + Last EWMA * 0.9

Misfire counts for last 10 driving cycles - Total

$A4

$0C

Multiply by 1

Time

Ignition switch to the ON position: Total misfire counts for last driving cycle

Engine running: Total misfire counts for current driving cycle Misfire counts for last or current driving cycle - cylinder 3

$A5

$0B

Multiply by 1

Time

Exponential Weighted Moving Average (EWMA) misfire for cylinder 4:

EWMA = Total misfire counts for last driving cycle * 0.1 + Last EWMA * 0.9

Misfire counts for last 10 driving cycles - Total

$A5

$0C

Multiply by 1

Time

Ignition switch to the ON position: Total misfire counts for last driving cycle

Engine running: Total misfire counts for current driving cycle Misfire counts for last or current driving cycle - cylinder 4

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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