what are the TCU codes people !!!!!

[90exkId]

ok so i searched an searched for finding the TCU number codes to find out what each one mean, an the search button came up with no help. so can anyone PLEASE give me the codes so i can find out why my S light is stayin on.

[JoshM]

TCU Codes:

CODE LIST:

1-Lock-up solenoid 'A' circuit open or shorted.
2-Lock-up solenoid 'B' circuit open or shorted.
3-Throttle Position Sensor circuit open or shorted.
4-Vehicle Speed Sensor open or shorted - No signal from speedometer.
5-Shift Lever Position Switch circuit shorted.
6-Shift Lever Position Switch circuit open.
7-Shift Solenoid 'A' circuit open or shorted.
8-Shift Solenoid 'B' circuit open or shorted.
9-Counter shaft or transmission speed pulse generator open or shorted.
10-Coolant Temperature Sensor open or shorted.
11-Engine RPM (Ignition coil signal) open or shorted.
12-(No code 12 used)
13-Main shaft speed pulse generator open or shorted.
14-Linear (line pressure control) solenoid open or shorted.
15-Kick down switch circuit shorted.

[90exkId]

thanks so much!. New question, you know how when you turn the key to accessories, the ECU light flashes once, is the TCU sopposed to flash too??
My 'S' light is contantly on, but the TCU is not throwing any codes. Now i knoe theres a way to put a paper clip in the plug under the pass. kick panel to make the check engine light flash to get the code. How do i do that for the TCU to see what code it is since wen i start it an look, theres no flashes. thanks alot! workin on this right now so, i will be check all the time.

[Juan4DCB7]

sorry for stealing your thread man, but how do you diagnose a d4 light?

[That1Guy]

Same way, but instead of "S" their an "D4". Someone need to put those codes as a sticky please.

[That1Guy]

thanks so much!. New question, you know how when you turn the key to accessories, the ECU light flashes once, is the TCU sopposed to flash too??
My 'S' light is contantly on, but the TCU is not throwing any codes. Now i knoe theres a way to put a paper clip in the plug under the pass. kick panel to make the check engine light flash to get the code. How do i do that for the TCU to see what code it is since wen i start it an look, theres no flashes. thanks alot! workin on this right now so, i will be check all the time.

Maybe there isn't a code or anything wrong with your transmission. My doesn't blink anymore except when only when I do TCU code test.

[90exkId]

well there has to be b\c the S light doesnt come on an stay on for no reason lol. but wen i stuck the paper clip in the blue plug under the glove box, the CEL light comes on, doesnt flash or nuttin juss comes on, an my S light dont flash or go off. is my TCU sopposed to flash once when you turn the key on like the ECU does? b\c my TCU dont flash at all.