99 TCM diagram AW4
10-27-2012, 07:29 PM
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99 TCM diagram AW4
Save it in case you have transmission problem.
It looks like everything, except BUS, can be checked by $3 multimeter from HarborFreight.
It looks like everything, except BUS, can be checked by $3 multimeter from HarborFreight.
Last edited by Rockville; 10-28-2012 at 05:16 PM.
10-27-2012, 08:00 PM
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Year: 1999
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When you say everything, except BUS, can be checked...what do you mean?
The CCD Data Bus can be checked with a Volt/Ohmmeter. Is this what you are referring to?
10-27-2012, 08:10 PM
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Nice. Two things that jump out at me:
1) The Trans solenoids are grounded through the transmission case, something I've been told in the past but not seen on a drawing, (so..check grounds when the solenoids act up) and
2) The NSS position is considered by the TCU. Good argument for cleaning/fixing it instead of merely jumpering past it when it acts up.
1) The Trans solenoids are grounded through the transmission case, something I've been told in the past but not seen on a drawing, (so..check grounds when the solenoids act up) and
2) The NSS position is considered by the TCU. Good argument for cleaning/fixing it instead of merely jumpering past it when it acts up.
10-28-2012, 05:18 PM
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I didn't write about it, didn't have time to verify.
CCken, you know everything, is that 2.5V?
I'll post resistance of speed sensors and solenoids later, when I find them in Manual.
Last edited by Rockville; 10-28-2012 at 05:22 PM.
10-28-2012, 08:14 PM
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I looked briefly through my transmission diagnostic manual, I think BUS wires have 2.5V.
I didn't write about it, didn't have time to verify.
CCken, you know everything, is that 2.5V?
I'll post resistance of speed sensors and solenoids later, when I find them in Manual.
I didn't write about it, didn't have time to verify.
CCken, you know everything, is that 2.5V?
I'll post resistance of speed sensors and solenoids later, when I find them in Manual.
Don't want to Hi Jack your thread with the details. It's a bit drawn out.
Never mind that, lets see some more from your manuals.
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