1992 Honda Accord

NUT98

MEMBER
1992 HONDA ACCORD
4 CYL
FWD
AUTOMATIC
102,000 MILES

Trans will stay in dr.#4 but will noy shift down and I will have to shift manually from a stop when I drop to low dr.#1 dr.#4 light stays on as does #1 light however when I replaced battery, trans was ok for a few days then malfunction again I disconnected the battery and it was ok again whats wrong

3 Replies

KHLOW2008

MECHANIC
41,814 POSTS

Hi nut98,

Than you for the donation.

Problem seems to be a faulty transmissin control module( TCM ). They are know to fail quite often.

When problem occurs, did the D4 ( or S mode ) light blinks while driving?

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Monday, September 21st, 2009 AT 1:12 AM

NUT98

MEMBER
2 POSTS

Light did not blink it just stayed on D4 after shifting to low or any other gear evev in park D4light would stay on but starting from stop in D4 it starts in a high gear

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Tuesday, September 22nd, 2009 AT 5:35 PM

KHLOW2008

MECHANIC
41,814 POSTS

This seem to indicate a faulty TCM also known as ATCU.

Try the folloowing to see if you can retrieve any trouble codes.

ATCU System Fault Codes

1 . With ignition off, connect jumper wire between service check connector terminals. Service check connector is Blue and located at lower right corner of glove box, near kick panel.

This will place ATCU in self-diagnostic mode.
2 . Turn ignition on. Fault codes will be indicated by
blinking self -diagnostic "D4" indicator light on instrument panel.

3 . Fault codes will be indicated by number of short and long blinks. One long blink equals 10 short blinks. For example, a long blink followed by 4 short blinks indicate Fault Code 14.

4 . Once fault code is obtained, determine probable cause and symptom. Remove jumper wire from service check connector.

Let me know the result.

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Wednesday, September 23rd, 2009 AT 9:50 AM