how can you tell if your ECM is bad in a 2003 honda accord

miken585
0

Asked by miken585 Jan 03, 2014 at 12:51 PM about the 2003 Honda Accord EX

Question type: Maintenance & Repair

2 Answers

Tom Demyan
95,195

Usually with some diagnostic equipment.

Mary N Cris Owens
35

actually honda has its own built in diag system, if your CEL comes on and stays on its useally a good sign that youhave a bad ECU, however if you see it blink when you cycle the key to ON then you need to read the codes it has. You can do this WITHOUT any diag equipment. Honda has a blue plug up under your pass side kick panel. run a jumper wire on this then turn the key to ON dont try to start the car, just put it in the ON position, it will begin to blink in morse code to you, short blinks and long ones. Google will tell you what is what, "CAR GURUS" is worthless.

Your Answer

Add photo

Related Questions

  • 1989 honda accord LXi 9 answers

    my honda accord will turn over and act like it wants to start but wont turn over i have replaced the fuel pump, would it be the fuel filters? i dont know whats up please help?

    1989 Honda Accord Lxi

    -

    Maintenance & Repair

  • 88 honda accord cooling fans wont work 1 answer

    ok i just got this honda accord year 88 my cooling fans wont turn on it over heats really bad i can drive like 10mins then bam overheat can somone please help me out to tell me what could be wrong tha...

    1988 Honda Accord LX Hatchback

    -

    Maintenance & Repair

  • where is the a/c compressor on the honda accord 1988 1 answer

    I HAVE BEEN LOOKING FOR THE A/C COMPRESSOR CAN YOU TELL ME IT IS IS A HONDA ACCORD 1988 LX, PLEASE HELP ME OUT.

    1988 Honda Accord LX

    -

    Maintenance & Repair

  • A/C oil capacity 2 answers

    How much and what type of a/ c oil does my 2003 handa accord lx v6 take?

    2003 Honda Accord LX V6

    -

    Maintenance & Repair

  • Transmission 6 answers

    What did Honda do with the 2000 Accords transmissions that they are so bad?

    2000 Honda Accord EX

    -

    General

Search Honda Accord Questions

Honda Accord Experts

#1 lightGear
lightGear
Reputation 1,020
#2 Jonathan Ford
Jonathan Ford
Reputation 870
#3 Tom Demyan
Tom Demyan
Reputation 820
View All

Related Models For Sale

Used Honda Civic"
842 Great Deals out of 57,416 listings starting at $995
Used Toyota Camry"
1,586 Great Deals out of 70,498 listings starting at $1,395
Used Nissan Altima"
1,544 Great Deals out of 80,582 listings starting at $995
Used Nissan Maxima"
608 Great Deals out of 19,661 listings starting at $1,495
Used Acura TL"
277 Great Deals out of 6,664 listings starting at $2,250
Used Toyota Corolla"
1,207 Great Deals out of 54,848 listings starting at $995
Used Honda CR-V"
705 Great Deals out of 53,292 listings starting at $1,400
Used Hyundai Sonata"
1,044 Great Deals out of 58,553 listings starting at $1,095
Used BMW 3 Series"
1,223 Great Deals out of 37,756 listings starting at $1,200
Used Acura TSX"
192 Great Deals out of 3,955 listings starting at $3,999
Used Toyota Avalon"
300 Great Deals out of 15,414 listings starting at $1,900
Used Kia Optima"
558 Great Deals out of 39,950 listings starting at $1,900
Used Honda Civic Coupe"
219 Great Deals out of 8,719 listings starting at $4,995

Used Cars For Sale

2014 Honda Accord EX For Sale
4 Great Deals out of 1,207 listings starting at $18,995
2013 Honda Accord EX For Sale
11 Great Deals out of 248 listings starting at $17,974
2012 Honda Accord EX For Sale
23 Great Deals out of 709 listings starting at $11,477
2011 Honda Accord EX For Sale
27 Great Deals out of 442 listings starting at $11,777