U1262 SCP Cmmunication bus failure
#1
U1262 SCP Cmmunication bus failure
2002 Dually CC 7.3
After searching high and low on the internet for a fix for this code, can't find any threads that fixes it. I read some people say, "you need the stealership for this one". ouch
Any suggestions? She starts and drives fine
I do have a AE scanner..
Many thanks
-O
thanks again in advance.
After searching high and low on the internet for a fix for this code, can't find any threads that fixes it. I read some people say, "you need the stealership for this one". ouch
Any suggestions? She starts and drives fine
I do have a AE scanner..
Many thanks
-O
thanks again in advance.
#2
#3
#4
There is an SCP+ and an SCP- that goes to the OBDII data link connector. I would think that if one were open your AE wouldn't be able to communicate with the PCM. Grab your VOM an check pin 2 and 10 with key of and key on-engine off. If you don't find the right potenials it could be a loose wire or bad connctor pin. Pin 16 should be hot at all times and is protected by the same fuse as the cig lighter.
#5
#6
To check for the voltages one lead to good ground, the other to pin.
To check for ground one lead on voltage, use pin 16 if it is hot, and the other on pin. If ground present at pin you should see the voltage from pin 16 or whatever voltage source you use. Check the voltage source you use to a good ground so you know what to expect when you check a pin for ground.
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