[dennis fuhriman]

I need to adjust the timing on a 91 Honda Civic. I ned to jump the service check connector with a paper clip. Where is the service check connecter located?

[TxGreaseMonkey]

Service Check Connector:

When the Check Engine Light (CEL) is on, it will be necessary to locate the 2-pin Service Check Connector (SCC) on OBD-I (pre-1996) Hondas. It is normally located under the dash, approximately 1 inch (2.5 cm) from the right kick panel. Take a small screwdriver and carefully pry it from the rubber mount. The other 3-pin connector in the rubber mount is the Data Link Connector (DLC), which should be left alone. Jump the SCC with a paper clip, turn the ignition switch to ON (Position II), and count the number of times, if any, the CEL flashes. Reference a Diagnostic Trouble Code (DTC) chart to identify the code being displayed. The SCC is also jumped, when an induction timing light is used to check engine timing.

After troubleshooting, turn the ignition switch OFF, remove the jumper wire, and reset the ECM, by removing the BACK UP (7.5 A) fuse from the under-hood fuse box for 10 seconds. Disconnecting the BACK UP fuse cancels preset radio stations and the clock setting; therefore, they will need to be reset.

[oregonslight1]

I connected the jump wire and followed instructions. The S light remains solid (I just bought and installed the exact model number unit, a 10 volt capacitor was bad and melted. After installing, the blinking S light stopped and is now solid. I can't get out of Sport Mode and it seems like it is dragging with no second, just 3rd and 4th and reverse. Please, I need a real picture of where and how to retrieve the error codes. Could my new TCU unit be bad?

My speedometer is fine.

Any info re: "S" light on, green, solid. After new tcu installed.

Thanks!