Re: 93 Accord Lx D4 light blinking problem?? -- Honda Accord Message Board

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Subject: Re: 93 Accord Lx D4 light blinking problem??

Author:
Spredvan

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Date Posted: 16:03:13 02/21/04 Sat
Author Host/IP: c-24-17-233-64.client.comcast.net/24.17.233.64
In reply to: Bobby 's message, "93 Accord Lx D4 light blinking problem??" on 15:10:21 02/21/04 Sat

Hi Bobby;

You have 2 computers on board. The ECU (Electronic Control Unit) and the A/T Control Unit which mainly functions to control the automatic transmission.

If either senses a fault, they will store a Fault Code, and cause a light to blink on the dash to let you know there is a problem. The ECU will cause the check engine light to blink and the A/T CU will cause the ("S" light to blink on my 90 Accord), but I think other models will indicate on the D4 light.

If you short the service connector, any stored codes will be displayed for you on the dash. The respective lights will blink out a series of short and long blinks. Long blinks are 10 and short blinks are 1. (One long blink and 4 short blinks would be fault code 14.)

The service connector is blue, and hanging loose in the passenger-side floorboard. It might be in the upper corner behind the plastic kick panel. Once you find it, use a paperclip to short the 2 pins together. Then turn the key until the dash lights come on , but don't start the car. Count the flashes to determine the fault codes and post them back here on the forum.

It seems strange to me that a problem detected by the A/T Control Unit would cause the car not to start???

Regardless...if you can provide any fault codes it would help.

Mike

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Replies:

Subject	Author	Date
Re: 93 Accord Lx D4 light blinking problem??	Bobby	23:01:17 02/26/04 Thu
Re: 93 Accord Lx D4 light blinking problem?? -- Spredvan, 23:23:30 02/26/04 Thu