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Discussion Starter · #1 ·
I was hoping that someone might help me out with this. As you will be able to tell below I do not know that much about cars.

I have a 620 Si Auto (93 L reg) and when I was out today everything was okay until I stopped for 2 mins. When the car started again the Sports Light was flashing and it would appear as if the car was taking off in 2nd gear or at least very slowly. I drove it round the corner and stopped the car and turned it off for 2 mins (while I was in a shop) when I got back in the light had stopped flashing and everything was working fine.

Can someone tell me if this is a sign that I am going to have serious transmission problems as this is what it says in the Owners Manual?

For your information I bought it about 4 moths ago with 67,000 miles on the clock and it has been okay for the 4,000 miles I have driven it. Unfortuntaley it never had a service hand book and the person could not tell when when it was last serviced etc. I was thinking about changing the timing belt when I put it in for a serivce and get the MOT done, in the next couple of weeks, but do not want to spend a huge amount of money on it if there will be any other problems that will cost a lot to fix as it would probably be more cost effective to buy another one with long MOT that has a full service hand book?

Any advice on this or how best to look after the car would be really appreciated.

Graeme
 

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It sounds like an electrical gremlin. I would not worry. The auto box is a very reliable unit and gives very few problems.
 

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Discussion Starter · #3 ·
Thanks for your reply. I will try to put it out of my mind unless it happens again at some point.

Cheers
 

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Discussion Starter · #4 ·
Following on for this my sports light has started to flash again and was hoping someone may help me sort out why.

When I start my car in Park with the hand brake on or off the Sports light will come on flashing and will only let me pull away very slowly. However, if I put my foot on the brake the car will start normally (does not matter if the handbrake is on).

Apart from this the car is running fine, infact it has just passed its MOT and taken me to Brittany and back.

I spoke to my mechanic and he thought that it may have something to do with the footbreak sensor or something?

Any help that anyone can give me would be great.
 

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The TCU (transmission control unit) is probably on it's way out.

To narrow the fault down even further, you will need to locate the two pin diagnostic plug in the passenger footwell, usually behind the glovebox or plastic trim in the corner of the footwell, bridge the plug with a paperclip and turn the ignition to on (not start) and get the code from the D4 light as it's an auto.

The code will be displayed as a series of long and short flashes depending on the code.

1 Long = 10
1 Short = 1

For example 2 long 4 short = Code 24.

Multiple fault codes will be displayed one after the other and will repeat.

As above then pause,

Then 1 long 1 short = Code 11, and so on.

Get the code and post it here, then we'll go from there.
 

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Discussion Starter · #6 ·
Thanks for that Ray and sorry for the delay, not been around a computer.

Could you tell me what the Diagnostic plug would look like (if that is not a stupid question) and if it would be covered. I had a quick look where you said but everything seems to be covered in plastic?

As soon as I have located it I will confirm the code.

Thanks for your help with this
 

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Pictured below is the plug on our '95 Accord manual, the plug on your 600 auto should be in a similar place IIRC. You might have to remove the trim panel in the corner to locate it.

 

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Discussion Starter · #9 ·
Ray,

I have done what you said, so thanks for the picture.

It was the S button that flashed instead of D4 but I amanaged to get the codes.

It flashed once then twice then 8 times and all would appear to be short flashes. I presume that there is then 3 faults? 1, 2 and 8.

Any information you have on this would be gratefully recieved.

Thanks again
 

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I cannot be 100% sure of the code responses as I can't find the correct details, however I have the Accord up to 93 TCU code list to hand, usually the codes carry over the to the next generation and their meaning stays the same.

Codes:

1 = Disconnected lock-up control solenoid valve A coupler.
Short or open in lock-up control solenoid valve A wire.
Faulty lock-up control solenoid valve A.

2 = Disconnected lock-up control solenoid valve B coupler.
Short or open in lock-up control solenoid valve B wire.
Faulty lock-up control solenoid valve B.

8 = Disconnected shift control solenoid valve B coupler.
Short or open in shift control solenoid valve B wire.
Faulty shift control solenoid valve B.

As for a fix, I have no idea, best speak to an autobox specialist for details and costs.
 

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Discussion Starter · #11 ·
Ray,

Thank you very much for all your help with this.

If anyone else can confirm these codes or know how to fix or how much it would cost that would be great

When I get the answer I will post it on here for your information.

Cheers.

Graeme
 

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Jason, those codes relate to the main ECU and not the Auto TCU. To confuse matters even more there is another set of codes for cars equipped with the Honda ABS system.
 

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You don't choose, if the system registers a fault in the main ECU and ABS for example then the corresponding lights should flash at the same time.
 

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Discussion Starter · #19 ·
Just to let you know.

The sports light has stopped flashing and I can start the car with no problems. I tried the paper clip trick and the sports light did not flash this time....

I think something must be up but will not woory about it unless it happens again...

Thanks for you help with this
 

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Graeme, if you need to clear the codes and reset the various ECU's, then pull the backup fuse from the engine bay fuse box for 10 seconds and replace, only do this when the car is cold and make sure you have your radio code to hand if needed as the radio memory will be reset as well.
 
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