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Car Forum / Honda Cars / February 200599 Civic Check Engine Light
Hi there, Got my sister's car with the CEL on, she doesn't maintain it that well... All of the ignition stuff looked wore out, so I replaced Cap, rotor, Wires, and plugs. However, the light came back on. What is the procedure to check for the ECU trouble code if I don't have a scanning tool? Any other ideas other than checking the code that I may have overlooked? t >Hi there, >Got my sister's car with the CEL on, she doesn't >maintain it that well... All of the ignition >stuff looked wore out, so I replaced Cap, rotor, >Wires, and plugs. However, the light came back >on. >What is the procedure to check for the ECU >trouble code if I don't have a scanning tool? RTFSM (Read the f.cking shop manual ) Visit a dealer and read their f.cking shop manual if you don't have a copy. HEY a.shole. I have the 'f.cking' shop manual, and i read it. It sure tells me how to scan the code if I have an OBDII tool. I don't have one of those, so i am asking the nice people on this forum for some input. So go take a long walk off a short pier, OK? Dumbass. Anybody else with something useful to say? t > Hi there, > [quoted text clipped - 9 lines] > Any other ideas other than checking the code > that I may have overlooked? The #1 most common reason for the MIL to come on is an insufficiently tightened gas cap. It has to click at least three times. If the light has come on for that reason, it will go off within a few drive cycles. With your car, you *MUST* read that code before wasting enormous amounts of money and time. OBD-II error codes cover a couple of hundred different problems (and that's just the Federally-mandated ones), and blindly replacing parts without knowing the code is not wise at all. Have a look at the list here: http://www.tegger.com/hondafaq/error_codes.html#standard The code can only be read with a scan tool. If you're in the States, AutoZone will do it for free. If you're in Canada, call around to various garages and get quotes on having the code read. It takes only a few minutes. If I were you, I'd get the dealer to do it if you haven't got a trusted garage. They're most likely to know what commonly causes your error.  SignatureTeGGeR? The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ I thought there was a way to jumper the service connector and watch the CEL flashes to determine the codes being thrown. Am I mistaken? t > I thought there was a way to jumper the service > connector and watch the CEL flashes to determine > the codes being thrown. Am I mistaken? Not after 1995, unless someone has information I haven't got. For pre-'96, see here: http://www.iequus.com/assets/manuals/3173_ICCR_E_14JAN03.pdf SignatureTeGGeR? The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ On 2/14/05 5:36 PM, in article Xns95FDBDCB3F4A2teggeratistop@207.14.113.17, "TeGGer®" <tegger@istop.c0m> wrote: >> I thought there was a way to jumper the service >> connector and watch the CEL flashes to determine [quoted text clipped - 4 lines] > For pre-'96, see here: > http://www.iequus.com/assets/manuals/3173_ICCR_E_14JAN03.pdf The circuit to make it blink out codes is still in there, at least according to the FSM for the 99-00 Acura TL. Pin 1 in the diagnostic connector is the SCS line. The blink codes are listed in the book. It says it will blink them out if the SCS line is jumped by the Honda PGM tool. What it doesn't tell is what line it has to be jumped to in order to activate it. > The circuit to make it blink out codes is still in there, at least > according to the FSM for the 99-00 Acura TL. Pin 1 in the diagnostic > connector is the SCS line. The blink codes are listed in the book. > It says it will blink them out if the SCS line is jumped by the Honda > PGM tool. Now *that's* the kind of info I'm looking for! What does the PGM tool look like? (Don't tell me it's a paper clip!) SignatureTeGGeR? The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ The sketch in the FSM looks like a digital multimeter (a screen, a square keyboard array under the screen and a data cable coming out the bottom). On 2/14/05 7:33 PM, in article Xns95FDD18A7724Eteggeratistop@207.14.113.17, "TeGGer®" <tegger@istop.c0m> wrote: >> The circuit to make it blink out codes is still in there, at least >> according to the FSM for the 99-00 Acura TL. Pin 1 in the diagnostic [quoted text clipped - 5 lines] > > What does the PGM tool look like? (Don't tell me it's a paper clip!) > On 2/14/05 7:33 PM, in article > Xns95FDD18A7724Eteggeratistop@207.14.113.17, "TeGGer?" [quoted text clipped - 13 lines] > square keyboard array under the screen and a data cable coming out the > bottom). Hm. Then it's still not a DIY thing like the old service connector was. SignatureTeGGeR? The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ On 2/14/05 8:12 PM, in article Xns95FDD81DD46E7teggeratistop@207.14.113.17, "TeGGer®" <tegger@istop.c0m> wrote: >> On 2/14/05 7:33 PM, in article >> Xns95FDD18A7724Eteggeratistop@207.14.113.17, "TeGGer®" [quoted text clipped - 15 lines] > > Hm. Then it's still not a DIY thing like the old service connector was. It might be. There are only 6 wires connected to the 16 pin connector - Pin 1 is the SCS line Pin 6 connects to SRS & ABS/TCS units Pin 8 goes to a fuse Pin 12 is a ground Pin 13 is another ground Pin 15 is the scan tool I/O line & also goes to the MIL through the PCM just need to find out which Pin line 1 needs to be jumped to. It pretty much has to be one of the grounds or the I/O line. I don't plan to try it unless I can figure it out definitively, though. > On 2/14/05 8:12 PM, in article > Xns95FDD81DD46E7teggeratistop@207.14.113.17, "TeGGer?" > <tegger@istop.c0m> wrote: >> Hm. Then it's still not a DIY thing like the old service connector >> was. [quoted text clipped - 15 lines] > I don't plan to try it unless I can figure it out definitively, > though. Be nice if somebody did find out. That would be a nice FAQ addition. SignatureTeGGeR? The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ "TeGGer®" wrote: > > The circuit to make it blink out codes is still in there, at least > > according to the FSM for the 99-00 Acura TL. Pin 1 in the diagnostic [quoted text clipped - 5 lines] > > What does the PGM tool look like? (Don't tell me it's a paper clip!) According to the service manual for the '96 - '00 Civic (pages 11-7 and 11-81), the old MIL blink routine can be used instead of a scan tool. Again, according to the manual, there is the regular OBD2 Data Link Connector under the steering wheel, and there is a Service Check Connector tucked away by the ECU (right side of passenger foot well). The Service Check Connector has two pins only, and you short them with a paper clip then turn on the ignition. On the service check connector, one wire is ground, the other is an input to the ECU. This latter wire is NOT duplicated on the OBD2 connector (although the wiring diagrams for that section are very poorly scanned in my manual, there could easily be lines missing). VW Golf and Jetta from around 1990 had a great setup: The check engine light was in a push button on the dash. To read the codes, you just pushed the button and read the flashes. > According to the service manual for the '96 - '00 Civic (pages 11-7 and > 11-81), the old MIL blink routine can be used instead of a scan tool. [quoted text clipped - 8 lines] > connector (although the wiring diagrams for that section are very poorly > scanned in my manual, there could easily be lines missing). This is going into the FAQ, thanks again. SignatureTeGGeR? The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/ The 96 and 97 accord (and odyssey too) have the jumper also, I guess to phase people in for a little while. The service manual should give both procedures for troubleshooting. (with scantool and without). > Not after 1995, unless someone has information I haven't got. > > For pre-'96, see here: > http://www.iequus.com/assets/manuals/3173_ICCR_E_14JAN03.pdf > I thought there was a way to jumper the service > connector and watch the CEL flashes to determine > the codes being thrown. Am I mistaken? > > t not on anything made since '96. i guarantee youll like the code scanner- its a neat toy. youve already got the shop manual, so....? I have a US 1997 Civic LX sedan owned since new. Jumpered the connector in my pass. footwell and read CEL 2x with success. Once for loose gascap (it was actually tight, but was a cheesy aftermarket one which i tossed) and once for failed O2 sensor. Correct both times. Not sure but Civic might have changed in 1998. Jeff so which table did you use to interpret the flashes? In the shop manual? t > Hi there, > [quoted text clipped - 6 lines] > What is the procedure to check for the ECU > trouble code if I don't have a scanning tool? might be worth the $99 for an actron scanner. its good for all cars from '96 on up. aside from that, autozone might check it for free. > Any other ideas other than checking the code > that I may have overlooked? you pretty much need the code, and we can take it from there ;) i had a CEL on my 98 civic, and the scanner told me not only that is was the O2 sensor, but which one, and what part was malfunctioning. beats spending $99 at the dealer for a diagnosis. Tools are something that ALWAYS pay for themselves. If you fix something once, you have wisely spent your money. Lend it to a friend, , he'll owe you one. Dan > > Hi there, > > [quoted text clipped - 20 lines] > the O2 sensor, but which one, and what part was malfunctioning. beats > spending $99 at the dealer for a diagnosis. |
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