dimu4ever

Hello Sir, i have the same car (91 honda accord) and have a similar problem. Please how do i locate and jumper the 2 blue pin connector to get the code, and what do i do with the code to resolve the issue. You can also reach me at dimu4ever@yahoo.com

I live in Nigeria. Thanks

Azim

I have a similar problem:

1991 Honda Accord Ex, 4 Dr., many kms, but it has been running great, and kept in v/good shape, well maintained,... in Canada.

"S" Sport light for transmission blinks, constantly, right after driving for a few minutes,.. NOT when starting. Engine Light also comes on, but not at first on starting, only after driving a few minutes, and after S comes on
The car doesn't start at first crank (maybe 2-3 cranks), with a new battery this week.

1. Trans doesn't go into Overdrive, but starts jerking at abt 3500 rpm, at approx 125+ Km/h.
2. But Trans does shift properly from 1st to 4th in D4, and D3, and gears "1" and "2 " work fine, except if I push car around the limit of gear, car will jerk in any gear: 1-2-D3-D4, at abt 3000-3500 rpm,..!
3. Engine Light also stays on most times, except during initial start up !
4. Cruise control seems finicky but seems to work fine most times.
5. I have NOT (YET ) encountered the speedometer dropping or stopping completely, or 3rd or 4th gear dropping as some have experienced,..
6. Can u pls tell me where are the Speed Control, and the TCU located, and what is VSS ( speedcontrol unit ??),..
7. I don't know if these are related: but there seem to be some electrical problems with the headlight/signal stalk ( the dash blue light for full headlight doesn't work), and DRL is not working, and the flasher signal lights on dash don't work !!
8. Maybe all these started when I was told to replace the starting ignition switch, when the car wouldn't start few yrs ago ! After that I bought a new car, and basically parked this car, but have now reactivated it.

Pls help, as many mechanics don't know the answers, or are giving me inconsistent solutions, some are just guessing, or want a lot of money,etc.
Thanking you,

poorman212

Best place to start, get the codes from the TCU and ECU and start from there.

Mayel271

Can Anyone explain what "jumper " means?

poorman212

The connector is two female wire connections. So you need something (a piece of wire. paperclip, something) to "jump" or connect the two female wire connectors together.

Markiasymone

My 1991 Honda Accord has the S light blinking and I jumped it and I got the code 14 I also counted the LED light on my computer and I got the code 17. It seems like my car is having a hard time going into 3rd gear not sure My blinkers won't work but my hazards do. And now my brake lights are out and also my my speedometer I don't know what to do I'm a single mother and it seems like my car is falling apart please help

MAD_MIKE

If you read a code 14 from the S or D4 light that means the FAS wire(communication wire between the TCU and ECU) is not properly communicating. Check your wire harness for any damage or flooding. This would cause a no shift/limp mode issue.

Code 17 from the check engine light is for VSS(vehicle speed sensor). This would cause non-functional speedometer.

Check any recent work done on the car first. Often the last thing done to a vehicle is the cause of the current issue(s).

Verify all fuses electrically.
Verify all fuses are installed correctly.
Verify battery connections are clean and tight.
Verify battery is fully charged.
Verify main grounds/bonding cables are clean and tight.
Check the wire harness down to the VSS and back through the firewall is intact/undamaged.
Check the wire harness to TCU/ECU is clearn and tight.
Check the pins on TCU/ECU are clean and undamaged.
Verify pins in wire harness connectors are clean/tight and fully inserted.

Robbrk

I had this same problem and Replaced the Main Relay under the drivers side dash just above the pedals. The "S" light went off and the car shifted like normal.

Alicia Erricson

If I have to get my tcu fixed what type of shop would I go to? I don't know how to fix it. Also any suggestions on how to fix a door that won't open? I've been told the latch might be broken.

egsleepercivic

any place the works on electronics that can solder in \ replace the components on the board, doesn't necessarily have to be an automotive shop

starrboy41

try replace the vehicle speed sensor. its behind the engine. it controls the gauges