PAM testing on 2014 Ford Focus

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whenindoubtfixit
Posts: 9
Joined: Thu Jun 10, 2021 10:35 pm
Vehicle: 2014 Ford Focus Titanium 5 door hatch 2L Duratec

PAM testing on 2014 Ford Focus

Post by whenindoubtfixit »

Am I correct in assuming the following message shows a sensor AND module error?

Code: B1B44 - Right Rear Outer Sensor

Additional Fault Symptom:
- Circuit Short To Battery

Module: Parking Aid Module
Ecmbuster
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Vehicle: Volvo Bertone and two Motorcyles
Location: On a spinning rock

Re: PAM testing on 2014 Ford Focus

Post by Ecmbuster »

Did the rear of the Ford get hit or jump a curb?

Two digts are missing on the end of the fault code: 12, 14 or 96
A continuous and on-demand DTC that sets when any of the right rear outer parking aid sensor circuits are open or the sensor signal line is shorted to ground.
A continuous and on-demand DTC that sets when the right rear outer parking aid sensor signal circuit is shorted to battery voltage.
A continuous and on-demand DTC that sets when the right rear outer parking aid sensor has internally failed or has an incorrect attenuation time.

Read the schematic and test with a digital meter.
Rear PAM.pdf
(509.65 KiB) Downloaded 19 times
With the Ford in R and parking brake applied with the Key in the ON position
Place an object behind each sensor approximately 1/2 meter in distance. Move the object to a known good sensor. It should react and tone.
With an oscilloscope, this view is one that is active.
Sensor Test.jpg
Sensor Test.jpg (414.54 KiB) Viewed 377 times
Post your results.
Do not ask for help in PM. Use the forum to ask and answer questions!
whenindoubtfixit
Posts: 9
Joined: Thu Jun 10, 2021 10:35 pm
Vehicle: 2014 Ford Focus Titanium 5 door hatch 2L Duratec

Re: PAM testing on 2014 Ford Focus

Post by whenindoubtfixit »

Thanks for the reply. The car hasn't been hit. It's relatively new to me. It worked during the test drives. It started giving an error on startup and every time it's shifted into reverse. I suspected it was power washed before I picked it up and the sensor got soaked? I'll be able to check it out Tuesday.
Thanks again.
Allan
whenindoubtfixit
Posts: 9
Joined: Thu Jun 10, 2021 10:35 pm
Vehicle: 2014 Ford Focus Titanium 5 door hatch 2L Duratec

Re: PAM testing on 2014 Ford Focus

Post by whenindoubtfixit »

It turns out the code is B1B44-12. I was using the oscilloscope to monitor the sensors. When I figured I'd read enough info I shut down FORScan. Weird but now I can't start the car. I wasn't writing anything but things seem to be confused, as am I.
Ecmbuster
Posts: 1303
Joined: Sun Mar 15, 2015 4:08 am
Vehicle: Volvo Bertone and two Motorcyles
Location: On a spinning rock

Re: PAM testing on 2014 Ford Focus

Post by Ecmbuster »

Charge the battery, leave the battery charger / power supply connected.
Leave the ignition key ON.
Scan the car and save all the faults.
Delete all faults, cycle the key once OFF to ON.
Exit FORScan and disconnect the adapter.
Leave the key ON and walk away from the car for an hour.
If you made any changes, revert all of them.

Is this Push-To-Start?
If so, change the battery for the fob.

As for the oscilloscope, I use a "magic wand" and place it near the sensor.
Last edited by Ecmbuster on Tue Jun 22, 2021 7:35 pm, edited 2 times in total.
Do not ask for help in PM. Use the forum to ask and answer questions!
whenindoubtfixit
Posts: 9
Joined: Thu Jun 10, 2021 10:35 pm
Vehicle: 2014 Ford Focus Titanium 5 door hatch 2L Duratec

Re: PAM testing on 2014 Ford Focus

Post by whenindoubtfixit »

Thanks for the reply. It is push to start. The battery was at 8 volts. I didn't even consider the voltage would drop so much. I didn't make any changes. I'll let you know the results. Thanks again.
Allan
whenindoubtfixit
Posts: 9
Joined: Thu Jun 10, 2021 10:35 pm
Vehicle: 2014 Ford Focus Titanium 5 door hatch 2L Duratec

Re: PAM testing on 2014 Ford Focus

Post by whenindoubtfixit »

I am curious about the reasons for leaving on for an hour? I'm presently doing that.
Thanks.
Ecmbuster
Posts: 1303
Joined: Sun Mar 15, 2015 4:08 am
Vehicle: Volvo Bertone and two Motorcyles
Location: On a spinning rock

Re: PAM testing on 2014 Ford Focus

Post by Ecmbuster »

Keep the battery voltage up at all times during diagnosis - never forget that!
In case you locked the IC or PCM, it will count down backwards.
The day of "sixty seconds and gone" was over a long time ago.
Do not ask for help in PM. Use the forum to ask and answer questions!
whenindoubtfixit
Posts: 9
Joined: Thu Jun 10, 2021 10:35 pm
Vehicle: 2014 Ford Focus Titanium 5 door hatch 2L Duratec

Re: PAM testing on 2014 Ford Focus

Post by whenindoubtfixit »

Great advice! I'm back in business. Thank you for all your help. I learned A LOT today.
Thanks again.
Allan
whenindoubtfixit
Posts: 9
Joined: Thu Jun 10, 2021 10:35 pm
Vehicle: 2014 Ford Focus Titanium 5 door hatch 2L Duratec

Re: PAM testing on 2014 Ford Focus

Post by whenindoubtfixit »

Installed a replacement sensor from Rock Auto and cleared codes with FORScan. Thanks to FORScan and the great advice here the system is working as it should.
Thanks again.
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