Mechanics

TRANNY

1993 Honda Accord

Computer problem
1993 Honda Accord 4 cyl Two Wheel Drive Automatic 147000 miles

Get code 2 and code 15 on D4 light, shifts erratic at times. Thanks
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Ernieboy
November 20, 2008.




Hello –

I have attached info on the two codes. Code 2 is for the lock up control solenoid B. I have attached info on check out of both A and B and how to change.


http://www.2carpros.com/forum/automotive_pictures/248015_Code_2_1.jpg



Test For Lock Up Control Solenoid A & B


http://www.2carpros.com/forum/automotive_pictures/248015_97488827_1.jpg



NOTE: Lock-up control solenoid valves A and B must be removed/replaced as an assembly.

Disconnect the connector from the lock-up control solenoid valve A/B.


http://www.2carpros.com/forum/automotive_pictures/248015_Picture16_2.jpg



Measure the resistance between the No.1 terminal (solenoid valve A) of the lock-up control solenoid valve connector and body ground, and between the No. 2 terminal (solenoid valve B) and body ground.
Replace the lock-up control solenoid valve assembly if the resistance is out of specification.
If the resistance is within the standard, connect the No. 1 terminal of the lock-up control solenoid valve connector to the battery positive terminal. A clicking sound should be heard. Connect the No. 2 terminal to the battery positive terminal. A clicking sound should be heard. Replace the lock-up control solenoid valve assembly if no clicking sound is heard.

Service and Repair
Notes

Remove the mounting bolts and lock-up control solenoid valve assembly.
NOTE: Be sure to remove or replace the lock-up control solenoid valves A and B as an assembly.


http://www.2carpros.com/forum/automotive_pictures/248015_RR_for_A_and_B_1.jpg



Check the lock-up control solenoid valve oil passages for dust or dirt and replace as an assembly, if necessary.
Clean the mounting surface and oil passages of the lock-up control solenoid valve assembly and install a new filter/gasket.
Check the connector for rust, dirt or oil and reconnect it securely.

Code 15 is the main shaft speed sensor. I have attached info on how to check that also.


http://www.2carpros.com/forum/automotive_pictures/248015_Code_15_1.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_Code_15_Main_Shaft_Speed_Sensor_1.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_Picture17_3.jpg



Remove the 6 mm bolt from the transmission housing, then remove the mainshaft or countershaft speed sensor.
Replace the O-ring with a new one before reinstalling the mainshaft or countershaft speed sensor.

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Please let us know if what the final fix was for your car so we can better assist others. Thanks!

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ImpalaSS
Nov 21, 2008.
Found open in wire at speed sensor, replaced sensor, no more code 15. Checked lock up solonoid as per instructions, and checked good, 13 ohms to ground aqnd a good click, and removed and reinstalled. Still have code 2 and d4 light went out, tryed another computer from friends wrecking yard, but it did not bring up code 2 or 15 but d4 light will come on. Wierd. Other computer out of 93 Honda automatic.

Tiny
Ernieboy
Nov 22, 2008.
Hello –

Looks like some progress.

How about clearing the codes…. Drive it and see how it drives and check for codes again.

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.

ImpalaSS
Nov 22, 2008.
D4 LIGHT FLASHING, solonoids ck. Ok, when driving about 4 miles or so speed drops to a max of 40 mph and rpm can go to 4 or 5 k and can shift into 1st, 2nd or 3rd and no difference. I shift into neutral, without stopping and restart the engine and everything ok for next several miles and have to repeat same procedure. The code on the light is 2. What is voltage to solonoids as maybe run a wire to them, to inside vehicle, to my voltmeter, while driving. Thanks

Tiny
Ernieboy
Nov 23, 2008.
Hello –

I have attached the troubleshooting tree for code 2.

Also, do you know what gear your transmission is starting out in? There may be an additional chart.

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.


http://www.2carpros.com/forum/automotive_pictures/248015_Trouble_1_1.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_Trouble_2_1.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_Trouble_3_1.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_Trouble_4_1.jpg


ImpalaSS
Nov 24, 2008.
Replaced computer and that took care of code 2, still getting code 15, even after changing bad mainshaft speed sensor, and very erratic shifting. I put a quart of trans x in and drove 75 miles, then drained tranny and refilled with with dexron v1 and no more shifting problem and no code 15, with 400 miles, since changing fluid. Thanks for your help.

Tiny
Ernieboy
Dec 6, 2008.
Hello –

Fantastic – glad it is working now.

Thank for using our services…. Please use us again and tell others.

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.
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ImpalaSS
Dec 6, 2008.

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