ralley007

bank2 sensor 1 malfunction on heater circuit,i checked i have 12 volts for the heater circuit.some recomend checking pcm ,but i cant even find it .96 f150 5.0 4x4

ymeski56

Have to tried switching o2's w/ one that isn't throwing the heater circuit code to see if it might just be the o2 itself? I'm not that versed on OBD-2's. I'd disconnect the battery & clear the KAM if it was OBD-1. But on OBD-2's, I believe that's a no-no! The PMC (or ECU) is usually behind a kick panel in thr cab. I'd check the passenger side first. When I've had a WTF problem in the past, I just wander into the service bay's at a Ford dealer, ask who works on emmissions contol systems & ask them! I've yet to be thrown out, bit, yelled at , or hit w/ a broom. Works for me! Tell them what's going on, what you replaced, and what they think. Right after lunch is a good time, quittin time's the worst. Might be something simple.

ralley007

i actually bought another and insgtalled it i picked a bosch brand for the quality as far as the shop there is no access these guys have there own window to the service writer and parts room and have A lunchroom.i dont think ambushing is a good idea.i had considered this option though...i still cant locate it the pics i see are a metal housing the only thing i found was plastic and said single wheel only.i have no idea what it is .this sensor is making me nuts thanx for the info

ymeski56

The PCM/ECU? Looks like a computer hard drive.w/ an old school LPT port connection

ralley007

i have looked in every place suggested nothing i see looks like a hard drive does anyone now exactly where the pcm is located it would really help keep my sanity

ymeski56

Try under the seat. It ain't in the engine compartment, or the bed!

hackersmovie

We can also eliminate it being in the doors or on the ceiling.....

Typically, it's behind the drivers kickpanel, BEHIND the emergency brake... (If memory serves, I could be waaay off.)

ralley007

behind the e brake would make sense cause i see a large plug in the fire walldo you need to take off that large bracket for the brake and why would they put it there?well it is going to have to wait the news is calling for 1 to 5 inches of rain .maybe sunday? thanx for the info
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ymeski56

Because they figured it would be the last place you'd look & it's better than putting it where the stereo is? Are you going to check the circuit for continuity from the return path pin? do you need the pinout legend? After most of the fire scorched hills mud slid down onto the roads, we're done w/ rain for a while.

ralley007

well its monday and its still rainin' our town was hit very hard loss of power and floods.had to fix the generator for hte pumps .whatever info you can suplly would be a great help thanx in advance