Having PCM start-up problems (no bus error) and have tracked a click sound coming from what I think is this little unit here. Positioned towards the firewall from the PDC and next to the brake fluid reservoir. It has 4 wires tat travel a short distance to a larger clip of wires.
Thanks for your help!
Rick

 

that would be your ABS module
the click would be a bad solenoid

 

Never thought I'd ever say this, but "Thanks Batman, you've saved the day!"

 

lol
no problem

i spent a lot of time in my 2.5...

 

I'm spending a lot of time in mine, too...unfortunately it's looking out from the garage! I love my truck. I don't need a monster truck.
So, are up for another challenge?

It seems that power isn't getting from the PDC to the PCM because the error of "no bus" on the odometer never changes, even after installing the refurbished PCM. Does the power get to the PCM from Clip 1, 2 or 3 on the PCM? I've run the self-test on the instrument cluster and it gives me errors 920, 921, and 999 - no communication with the PCM.

A year ago I could have just dropped the truck off (well, had it towed) at the garage and let someone else take care of it. But economic times as they are, I'm on my own.

Thanks for any comments, direction and help.
Rick

 

you try the PDC itself?

 

Is there an easier way to simply test the PDC?

I've tested all the fuses and replaced 1 (the ASD relay) of the 6 relays. (Another thread told how to test the relays but I think I need to pick up a little jump wire with alligator clips on each end.)

I did follow the snake of wire from the PDC to the PCM and see that the clip closest to the front is not included in the wires that come from the PDC. I tried to test the 140A fuse that is labeled Alternator and not sure if I have the Ohmmeter to test it correctly. I have a service manual but don't really know how to read electrical diagrams.

Thanks again. I'm sure you have some more productive to do than sit on the computer today. Raining like a bastid here today so good day to work inside.

Rick

 

im really not sure, i've never had electrical problems (knock on wood) right now im trying to get my idle smooth so i can get emissions tested

im in graphic design, i live on computers haha

 

Ahhh, gd - I've been in prepress and commercial printing for 22 years...I'm a CMYK person living in an RGB world!

 

hahaha i've heard that one a few times...
but see i make the pretty pictures that somebody else gets to print... sorry..
nah anything i do that goes to print is always CMYK