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 ON: 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

Monitor ID

Test ID

Scaling

Unit

Description

$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 ON: 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 ON: 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 ON: 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 ON: 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

P0505

Idle Control System Malfunction

Was this article helpful?

0 0
Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Responses

  • jonathan
    How to fix a misfire in a 1997 toyota rav4L?
    6 years ago

Post a comment